Struts2+Hibernate整合应用开发步骤

下面就简单学习下Struts2+Hibernate的整合。

其实就七个步骤：

第一步：添加所需的jar包。

第二步：创建实体类以及对应的映射文件。

第三步：配置hibernate.cfg.xml配置文件。

第四步：配置struts.xml配置文件。

第五步：创建相应的action。

第六步：在web.xml中配置启动Struts2框架的过滤器。

第七步：编写JSP显示页面。

---------------------------------------------------------------------------------------------------------------------------

具体细节及代码如下（代码仅供参考）：

第一步：jar包的添加这里不多说。

第二步：

实体类Message.java

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 *
 * @author yjd
 */
public class Message implements Serializable {

    private static final long serialVersionUID = 6617253915349620625L;
    private Integer id; // OID
    private String nickname; // 昵称
    private boolean gender; // 性别
    private String header_img; // 头像
    private String qq; // qq
    private String email; // 邮箱号
    private String content; // 留言内容
    private String ip; // 发布者的IP地址
    private Date pubTime; // 留言时间
    private String reply;// 管理员回复内容
    private Date replyTime; // 回复时间

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getNickname() {
        return nickname;
    }

    public void setNickname(String nickname) {
        this.nickname = nickname;
    }

    public boolean isGender() {
        return gender;
    }

    public void setGender(boolean gender) {
        this.gender = gender;
    }

    public String getHeader_img() {
        return header_img;
    }

    public void setHeader_img(String headerImg) {
        header_img = headerImg;
    }

    public String getQq() {
        return qq;
    }

    public void setQq(String qq) {
        this.qq = qq;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public Date getPubTime() {
        return pubTime;
    }

    public void setPubTime(Date pubTime) {
        this.pubTime = pubTime;
    }

    public String getReply() {
        return reply;
    }

    public void setReply(String reply) {
        this.reply = reply;
    }

    public Date getReplyTime() {
        return replyTime;
    }

    public void setReplyTime(Date replyTime) {
        this.replyTime = replyTime;
    }

    @Override
    public String toString() {
        return "Message [content=" + content + ", email=" + email + ", gender="
                + gender + ", header_img=" + header_img + ", id=" + id
                + ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
                + pubTime + ", qq=" + qq + "]";
    }

}

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 * 
 * @author yjd
 */
public class Message implements Serializable {

	private static final long serialVersionUID = 6617253915349620625L;
	private Integer id; // OID
	private String nickname; // 昵称
	private boolean gender; // 性别
	private String header_img; // 头像
	private String qq; // qq
	private String email; // 邮箱号
	private String content; // 留言内容
	private String ip; // 发布者的IP地址
	private Date pubTime; // 留言时间
	private String reply;// 管理员回复内容
	private Date replyTime; // 回复时间

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getNickname() {
		return nickname;
	}

	public void setNickname(String nickname) {
		this.nickname = nickname;
	}

	public boolean isGender() {
		return gender;
	}

	public void setGender(boolean gender) {
		this.gender = gender;
	}

	public String getHeader_img() {
		return header_img;
	}

	public void setHeader_img(String headerImg) {
		header_img = headerImg;
	}

	public String getQq() {
		return qq;
	}

	public void setQq(String qq) {
		this.qq = qq;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String getIp() {
		return ip;
	}

	public void setIp(String ip) {
		this.ip = ip;
	}

	public Date getPubTime() {
		return pubTime;
	}

	public void setPubTime(Date pubTime) {
		this.pubTime = pubTime;
	}

	public String getReply() {
		return reply;
	}

	public void setReply(String reply) {
		this.reply = reply;
	}

	public Date getReplyTime() {
		return replyTime;
	}

	public void setReplyTime(Date replyTime) {
		this.replyTime = replyTime;
	}

	@Override
	public String toString() {
		return "Message [content=" + content + ", email=" + email + ", gender="
				+ gender + ", header_img=" + header_img + ", id=" + id
				+ ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
				+ pubTime + ", qq=" + qq + "]";
	}

}

实体类映射文件Message.hbm.xml.

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="com.yjd.nb.domain.Message" table="msg">
        <id name="id" column="id">
            <generator class="native" />
        </id>

        <property name="nickname" />
        <property name="gender" />
        <property name="header_img" />
        <property name="qq" />
        <property name="email" />
        <property name="ip" />
        <property name="content" />
        <property name="pubTime" column="pub_time" />
        <property name="reply" />
        <property name="replyTime" column="reply_time" />
    </class>
</hibernate-mapping>

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
	<class name="com.yjd.nb.domain.Message" table="msg">
		<id name="id" column="id">
			<generator class="native" />
		</id>

		<property name="nickname" />
		<property name="gender" />
		<property name="header_img" />
		<property name="qq" />
		<property name="email" />
		<property name="ip" />
		<property name="content" />
		<property name="pubTime" column="pub_time" />
		<property name="reply" />
		<property name="replyTime" column="reply_time" />
	</class>
</hibernate-mapping>

第三步：Hibernate配置文件hibernate.cfg.xml.

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
    <!-- 数据库的连接参数配置 -->
    <property name="hibernate.connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="hibernate.connection.url">
        jdbc:mysql:///s2h-model
    </property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>

    <!-- 数据库方言 -->
    <property name="hibernate.dialect">
        org.hibernate.dialect.MySQLDialect
    </property>

    <!-- c3p0连接池的配置 -->
    <property name="connection.provider_class">
        org.hibernate.connection.C3P0ConnectionProvider
    </property>
    <property name="hibernate.c3p0.min_size">5</property>
    <property name="hibernate.c3p0.max_size">30</property>
    <property name="hibernate.c3p0.timeout">1800</property>
    <property name="hibernate.c3p0.max_statements">50</property>

    <!-- 其它配置 -->
    <property name="hbm2ddl.auto">update</property>
    <property name="show_sql">true</property>
    <!-- <property name="format_sql">true</property> -->

    <!-- 注册映射文件 -->
    <mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
	<!-- 数据库的连接参数配置 -->
	<property name="hibernate.connection.driver_class">
		com.mysql.jdbc.Driver
	</property>
	<property name="hibernate.connection.url">
		jdbc:mysql:///s2h-model
	</property>
	<property name="hibernate.connection.username">root</property>
	<property name="hibernate.connection.password">root</property>

	<!-- 数据库方言 -->
	<property name="hibernate.dialect">
		org.hibernate.dialect.MySQLDialect
	</property>

	<!-- c3p0连接池的配置 -->
	<property name="connection.provider_class">
		org.hibernate.connection.C3P0ConnectionProvider
	</property>
	<property name="hibernate.c3p0.min_size">5</property>
	<property name="hibernate.c3p0.max_size">30</property>
	<property name="hibernate.c3p0.timeout">1800</property>
	<property name="hibernate.c3p0.max_statements">50</property>

	<!-- 其它配置 -->
	<property name="hbm2ddl.auto">update</property>
	<property name="show_sql">true</property>
	<!-- <property name="format_sql">true</property> -->

	<!-- 注册映射文件 -->
	<mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

第四步：Struts2配置文件struts.xml.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <!--
        在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
        1.struts.i18n.encoding=UTF-8：请求消息的编码方式
        2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
        3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
        4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
        5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
        6.struts.objectFactory=spring：指定由spring负责action对象的创建
        7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
        8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
        9.struts.ui.theme=simple：UI主题类型
    -->
    <constant name="struts.action.extension" value="action,do,htm" />
    <constant name="struts.configuration.xml.reload" value="true" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.serve.static.browserCache" value="false" />

    <!-- Struts2以package形式管理Action的配置 -->
    <!--
        package常用的属性：
        1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
        2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
        3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
        4.abstract：声明包为抽象的。抽象包中不能配置action。
    -->
    <package name="front" namespace="/" extends="struts-default">
        <action name="index" class="com.yjd.nb.web.action.IndexAction">
            <result>/main.jsp</result>
        </action>
    </package>
    <package name="front.msgOpt" namespace="/msg" extends="struts-default">
        <action name="add" class="com.yjd.nb.web.action.MsgAction"
            method="add">
            <result name="list" type="redirect">/index.action</result>
        </action>
    </package>
</struts>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<!--
		在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
		1.struts.i18n.encoding=UTF-8：请求消息的编码方式
		2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
		3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
		4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
		5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
		6.struts.objectFactory=spring：指定由spring负责action对象的创建
		7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
		8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
		9.struts.ui.theme=simple：UI主题类型
	-->
	<constant name="struts.action.extension" value="action,do,htm" />
	<constant name="struts.configuration.xml.reload" value="true" />
	<constant name="struts.devMode" value="false" />
	<constant name="struts.serve.static.browserCache" value="false" />

	<!-- Struts2以package形式管理Action的配置 -->
	<!--
		package常用的属性：
		1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
		2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
		3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
		4.abstract：声明包为抽象的。抽象包中不能配置action。
	-->
	<package name="front" namespace="/" extends="struts-default">
		<action name="index" class="com.yjd.nb.web.action.IndexAction">
			<result>/main.jsp</result>
		</action>
	</package>
	<package name="front.msgOpt" namespace="/msg" extends="struts-default">
		<action name="add" class="com.yjd.nb.web.action.MsgAction"
			method="add">
			<result name="list" type="redirect">/index.action</result>
		</action>
	</package>
</struts>

第五步：创建action类。

跳转到首页的action:

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 *
 * @author yjd
 */
public class IndexAction extends ActionSupport {
    private static final long serialVersionUID = -3634083788212536690L;
    private MessageService messageService = new MessageService();
    private int pageNo = 1;
    private int pageSize = 10;

    public String execute() {
        PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

        ServletActionContext.getRequest().setAttribute("pm", pm);
        // ActionContext.getContext().put("pm", pm);
        return SUCCESS;
    }

    public MessageService getMessageService() {
        return messageService;
    }

    public void setMessageService(MessageService messageService) {
        this.messageService = messageService;
    }

    public int getPageNo() {
        return pageNo;
    }

    public void setPageNo(int pageNo) {
        this.pageNo = pageNo;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
}

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 * 
 * @author yjd
 */
public class IndexAction extends ActionSupport {
	private static final long serialVersionUID = -3634083788212536690L;
	private MessageService messageService = new MessageService();
	private int pageNo = 1;
	private int pageSize = 10;

	public String execute() {
		PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

		ServletActionContext.getRequest().setAttribute("pm", pm);
		// ActionContext.getContext().put("pm", pm);
		return SUCCESS;
	}

	public MessageService getMessageService() {
		return messageService;
	}

	public void setMessageService(MessageService messageService) {
		this.messageService = messageService;
	}

	public int getPageNo() {
		return pageNo;
	}

	public void setPageNo(int pageNo) {
		this.pageNo = pageNo;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}
}

实体操作action：

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 *
 * @author yjd
 */
public class MsgAction extends ActionSupport {
    private static final long serialVersionUID = -5736885633645314440L;
    private MessageService messageService = new MessageService();
    private Message msg;

    // 添加实体
    public String add() {
        msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
        msg.setPubTime(new Date());

        messageService.add(msg);
        return "list";
    }

    public Message getMsg() {
        return msg;
    }

    public void setMsg(Message msg) {
        this.msg = msg;
    }

}

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 * 
 * @author yjd
 */
public class MsgAction extends ActionSupport {
	private static final long serialVersionUID = -5736885633645314440L;
	private MessageService messageService = new MessageService();
	private Message msg;

	// 添加实体
	public String add() {
		msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
		msg.setPubTime(new Date());

		messageService.add(msg);
		return "list";
	}

	public Message getMsg() {
		return msg;
	}

	public void setMsg(Message msg) {
		this.msg = msg;
	}

}

第六步：在web.xml中配置启动Struts2框架的过滤器。

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

第七步：编写JSP显示页面。

首页跳转index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

主页：main.jsp

[html] view plain copy print ?

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@taglib uri="http://hi.csdn.net/tjcyjd/tags" prefix="myTag" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>在线留言系统</title>
<meta http-equiv=content-type content="text/html; charset=UTF-8">
<link href="images/style.css" type=text/css rel=stylesheet></link>
<style type="text/css">
body{font-size: 12px}
table{font-size: 12px}
a{font-size:12px}
.current{font-size:12px;}
</style>

</head>
<body><!--留言表单 -->
<form name=form1 action="msg/add.action" method=post>
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>请 签 写 留 言</span> </td></tr>
  <tr>
    <td align=right width="20%">您的称呼： </td>
    <td width="80%"><input id="username" maxlength=50 name="msg.nickname"/> </td></tr>
  <tr>
    <td align=right width="20%">您的性别： </td>
    <td width="80%"><input id=sex type=radio value="true" name="msg.gender">
      男    <input type=radio checked value="false" name="msg.gender"> 女
  </td></tr>
  <tr>
    <td align=right>选择头像： </td>
    <td><select id=image name="msg.header_img"> <option
        value=1.gif selected>1.gif</option> <option
        value=2.gif>2.gif</option> <option
        value=3.gif>3.gif</option> <option
        value=4.gif>4.gif</option> <option
        value=5.gif>5.gif</option> <option
        value=6.gif>6.gif</option> <option
        value=7.gif>7.gif</option> <option
        value=8.gif>8.gif</option> <option
        value=9.gif>9.gif</option> <option
        value=10.gif>10.gif</option> <option
        value=11.gif>11.gif</option> <option
        value=12.gif>12.gif</option> <option
        value=13.gif>13.gif</option> <option
        value=14.gif>14.gif</option> <option
        value=15.gif>15.gif</option> <option
        value=16.gif>16.gif</option> <option
        value=17.gif>17.gif</option> <option
        value=18.gif>18.gif</option> <option
        value=19.gif>19.gif</option> <option
        value=20.gif>20.gif</option></select> </td></tr>
  <tr>
    <td align=right>您的qq： </td>
    <td><input id=qq maxlength=50 name="msg.qq"> </td></tr>
  <tr>
    <td align=right>您的邮箱： </td>
    <td><input id=email maxlength=50 name="msg.email"> </td></tr>
  <tr>
    <td align=right>留言内容： </td>
    <td><textarea id=content name="msg.content" rows=5 cols=50></textarea>
  </td></tr>
  <tr>
    <td align="center" colspan=2><input type=submit value=提交>
<input type=reset value=重置> </td></tr></tbody></table></form><!--留言表单结束 --><!--留言列表 -->
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>留 言 列 表【<a href="login.jsp">管理登录</a>】 </span></td></tr>

<c:forEach items="${pm.data}" var="msg">
  <tr>
    <td align="center" width="20%" rowspan=4>你好 : ${msg.nickname} ${msg.gender ? "帅哥" : "靓妹"} <br><br><img
      src="images/${msg.header_img}"> </td></tr>
  <tr>
    <td width="80%" height="100%">发表于: <fmt:formatDate value="${msg.pubTime}" pattern="yyyy-MM-dd HH:mm:ss"/>   <img
      src="images/8_online.gif" border=0> <a href="mailto:${msg.email}"><img
      src="images/email.gif" border=0></a> <img src="images/ip.gif"
      border=0> 来自:${msg.ip}</td></tr>
  <tr>
    <td>${msg.content}</td></tr>
  <tr>
    <td><font color=#ff0000>管理员回复：</font> </td></tr>
</c:forEach>

</tbody></table><!--留言列表显示结束-->
    <!--分页链接 -->
    <myTag:pager pageSize="${pm.pageSize}" pageNo="${pm.pageNo}" url="index.action" recordCount="${pm.recordCount}"/>
    <!--分页链接结束 -->
</body></html>

 

 

下面就简单学习下Struts2+Hibernate的整合。

其实就七个步骤：

第一步：添加所需的jar包。

第二步：创建实体类以及对应的映射文件。

第三步：配置hibernate.cfg.xml配置文件。

第四步：配置struts.xml配置文件。

第五步：创建相应的action。

第六步：在web.xml中配置启动Struts2框架的过滤器。

第七步：编写JSP显示页面。

---------------------------------------------------------------------------------------------------------------------------

具体细节及代码如下（代码仅供参考）：

第一步：jar包的添加这里不多说。

第二步：

实体类Message.java

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 *
 * @author yjd
 */
public class Message implements Serializable {

    private static final long serialVersionUID = 6617253915349620625L;
    private Integer id; // OID
    private String nickname; // 昵称
    private boolean gender; // 性别
    private String header_img; // 头像
    private String qq; // qq
    private String email; // 邮箱号
    private String content; // 留言内容
    private String ip; // 发布者的IP地址
    private Date pubTime; // 留言时间
    private String reply;// 管理员回复内容
    private Date replyTime; // 回复时间

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getNickname() {
        return nickname;
    }

    public void setNickname(String nickname) {
        this.nickname = nickname;
    }

    public boolean isGender() {
        return gender;
    }

    public void setGender(boolean gender) {
        this.gender = gender;
    }

    public String getHeader_img() {
        return header_img;
    }

    public void setHeader_img(String headerImg) {
        header_img = headerImg;
    }

    public String getQq() {
        return qq;
    }

    public void setQq(String qq) {
        this.qq = qq;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public Date getPubTime() {
        return pubTime;
    }

    public void setPubTime(Date pubTime) {
        this.pubTime = pubTime;
    }

    public String getReply() {
        return reply;
    }

    public void setReply(String reply) {
        this.reply = reply;
    }

    public Date getReplyTime() {
        return replyTime;
    }

    public void setReplyTime(Date replyTime) {
        this.replyTime = replyTime;
    }

    @Override
    public String toString() {
        return "Message [content=" + content + ", email=" + email + ", gender="
                + gender + ", header_img=" + header_img + ", id=" + id
                + ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
                + pubTime + ", qq=" + qq + "]";
    }

}

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 * 
 * @author yjd
 */
public class Message implements Serializable {

	private static final long serialVersionUID = 6617253915349620625L;
	private Integer id; // OID
	private String nickname; // 昵称
	private boolean gender; // 性别
	private String header_img; // 头像
	private String qq; // qq
	private String email; // 邮箱号
	private String content; // 留言内容
	private String ip; // 发布者的IP地址
	private Date pubTime; // 留言时间
	private String reply;// 管理员回复内容
	private Date replyTime; // 回复时间

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getNickname() {
		return nickname;
	}

	public void setNickname(String nickname) {
		this.nickname = nickname;
	}

	public boolean isGender() {
		return gender;
	}

	public void setGender(boolean gender) {
		this.gender = gender;
	}

	public String getHeader_img() {
		return header_img;
	}

	public void setHeader_img(String headerImg) {
		header_img = headerImg;
	}

	public String getQq() {
		return qq;
	}

	public void setQq(String qq) {
		this.qq = qq;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String getIp() {
		return ip;
	}

	public void setIp(String ip) {
		this.ip = ip;
	}

	public Date getPubTime() {
		return pubTime;
	}

	public void setPubTime(Date pubTime) {
		this.pubTime = pubTime;
	}

	public String getReply() {
		return reply;
	}

	public void setReply(String reply) {
		this.reply = reply;
	}

	public Date getReplyTime() {
		return replyTime;
	}

	public void setReplyTime(Date replyTime) {
		this.replyTime = replyTime;
	}

	@Override
	public String toString() {
		return "Message [content=" + content + ", email=" + email + ", gender="
				+ gender + ", header_img=" + header_img + ", id=" + id
				+ ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
				+ pubTime + ", qq=" + qq + "]";
	}

}

实体类映射文件Message.hbm.xml.

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="com.yjd.nb.domain.Message" table="msg">
        <id name="id" column="id">
            <generator class="native" />
        </id>

        <property name="nickname" />
        <property name="gender" />
        <property name="header_img" />
        <property name="qq" />
        <property name="email" />
        <property name="ip" />
        <property name="content" />
        <property name="pubTime" column="pub_time" />
        <property name="reply" />
        <property name="replyTime" column="reply_time" />
    </class>
</hibernate-mapping>

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
	<class name="com.yjd.nb.domain.Message" table="msg">
		<id name="id" column="id">
			<generator class="native" />
		</id>

		<property name="nickname" />
		<property name="gender" />
		<property name="header_img" />
		<property name="qq" />
		<property name="email" />
		<property name="ip" />
		<property name="content" />
		<property name="pubTime" column="pub_time" />
		<property name="reply" />
		<property name="replyTime" column="reply_time" />
	</class>
</hibernate-mapping>

第三步：Hibernate配置文件hibernate.cfg.xml.

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
    <!-- 数据库的连接参数配置 -->
    <property name="hibernate.connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="hibernate.connection.url">
        jdbc:mysql:///s2h-model
    </property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>

    <!-- 数据库方言 -->
    <property name="hibernate.dialect">
        org.hibernate.dialect.MySQLDialect
    </property>

    <!-- c3p0连接池的配置 -->
    <property name="connection.provider_class">
        org.hibernate.connection.C3P0ConnectionProvider
    </property>
    <property name="hibernate.c3p0.min_size">5</property>
    <property name="hibernate.c3p0.max_size">30</property>
    <property name="hibernate.c3p0.timeout">1800</property>
    <property name="hibernate.c3p0.max_statements">50</property>

    <!-- 其它配置 -->
    <property name="hbm2ddl.auto">update</property>
    <property name="show_sql">true</property>
    <!-- <property name="format_sql">true</property> -->

    <!-- 注册映射文件 -->
    <mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
	<!-- 数据库的连接参数配置 -->
	<property name="hibernate.connection.driver_class">
		com.mysql.jdbc.Driver
	</property>
	<property name="hibernate.connection.url">
		jdbc:mysql:///s2h-model
	</property>
	<property name="hibernate.connection.username">root</property>
	<property name="hibernate.connection.password">root</property>

	<!-- 数据库方言 -->
	<property name="hibernate.dialect">
		org.hibernate.dialect.MySQLDialect
	</property>

	<!-- c3p0连接池的配置 -->
	<property name="connection.provider_class">
		org.hibernate.connection.C3P0ConnectionProvider
	</property>
	<property name="hibernate.c3p0.min_size">5</property>
	<property name="hibernate.c3p0.max_size">30</property>
	<property name="hibernate.c3p0.timeout">1800</property>
	<property name="hibernate.c3p0.max_statements">50</property>

	<!-- 其它配置 -->
	<property name="hbm2ddl.auto">update</property>
	<property name="show_sql">true</property>
	<!-- <property name="format_sql">true</property> -->

	<!-- 注册映射文件 -->
	<mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

 

第四步：Struts2配置文件struts.xml.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <!--
        在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
        1.struts.i18n.encoding=UTF-8：请求消息的编码方式
        2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
        3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
        4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
        5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
        6.struts.objectFactory=spring：指定由spring负责action对象的创建
        7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
        8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
        9.struts.ui.theme=simple：UI主题类型
    -->
    <constant name="struts.action.extension" value="action,do,htm" />
    <constant name="struts.configuration.xml.reload" value="true" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.serve.static.browserCache" value="false" />

    <!-- Struts2以package形式管理Action的配置 -->
    <!--
        package常用的属性：
        1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
        2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
        3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
        4.abstract：声明包为抽象的。抽象包中不能配置action。
    -->
    <package name="front" namespace="/" extends="struts-default">
        <action name="index" class="com.yjd.nb.web.action.IndexAction">
            <result>/main.jsp</result>
        </action>
    </package>
    <package name="front.msgOpt" namespace="/msg" extends="struts-default">
        <action name="add" class="com.yjd.nb.web.action.MsgAction"
            method="add">
            <result name="list" type="redirect">/index.action</result>
        </action>
    </package>
</struts>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<!--
		在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
		1.struts.i18n.encoding=UTF-8：请求消息的编码方式
		2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
		3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
		4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
		5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
		6.struts.objectFactory=spring：指定由spring负责action对象的创建
		7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
		8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
		9.struts.ui.theme=simple：UI主题类型
	-->
	<constant name="struts.action.extension" value="action,do,htm" />
	<constant name="struts.configuration.xml.reload" value="true" />
	<constant name="struts.devMode" value="false" />
	<constant name="struts.serve.static.browserCache" value="false" />

	<!-- Struts2以package形式管理Action的配置 -->
	<!--
		package常用的属性：
		1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
		2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
		3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
		4.abstract：声明包为抽象的。抽象包中不能配置action。
	-->
	<package name="front" namespace="/" extends="struts-default">
		<action name="index" class="com.yjd.nb.web.action.IndexAction">
			<result>/main.jsp</result>
		</action>
	</package>
	<package name="front.msgOpt" namespace="/msg" extends="struts-default">
		<action name="add" class="com.yjd.nb.web.action.MsgAction"
			method="add">
			<result name="list" type="redirect">/index.action</result>
		</action>
	</package>
</struts>

第五步：创建action类。

跳转到首页的action:

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 *
 * @author yjd
 */
public class IndexAction extends ActionSupport {
    private static final long serialVersionUID = -3634083788212536690L;
    private MessageService messageService = new MessageService();
    private int pageNo = 1;
    private int pageSize = 10;

    public String execute() {
        PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

        ServletActionContext.getRequest().setAttribute("pm", pm);
        // ActionContext.getContext().put("pm", pm);
        return SUCCESS;
    }

    public MessageService getMessageService() {
        return messageService;
    }

    public void setMessageService(MessageService messageService) {
        this.messageService = messageService;
    }

    public int getPageNo() {
        return pageNo;
    }

    public void setPageNo(int pageNo) {
        this.pageNo = pageNo;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
}

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 * 
 * @author yjd
 */
public class IndexAction extends ActionSupport {
	private static final long serialVersionUID = -3634083788212536690L;
	private MessageService messageService = new MessageService();
	private int pageNo = 1;
	private int pageSize = 10;

	public String execute() {
		PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

		ServletActionContext.getRequest().setAttribute("pm", pm);
		// ActionContext.getContext().put("pm", pm);
		return SUCCESS;
	}

	public MessageService getMessageService() {
		return messageService;
	}

	public void setMessageService(MessageService messageService) {
		this.messageService = messageService;
	}

	public int getPageNo() {
		return pageNo;
	}

	public void setPageNo(int pageNo) {
		this.pageNo = pageNo;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}
}

实体操作action：

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 *
 * @author yjd
 */
public class MsgAction extends ActionSupport {
    private static final long serialVersionUID = -5736885633645314440L;
    private MessageService messageService = new MessageService();
    private Message msg;

    // 添加实体
    public String add() {
        msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
        msg.setPubTime(new Date());

        messageService.add(msg);
        return "list";
    }

    public Message getMsg() {
        return msg;
    }

    public void setMsg(Message msg) {
        this.msg = msg;
    }

}

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 * 
 * @author yjd
 */
public class MsgAction extends ActionSupport {
	private static final long serialVersionUID = -5736885633645314440L;
	private MessageService messageService = new MessageService();
	private Message msg;

	// 添加实体
	public String add() {
		msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
		msg.setPubTime(new Date());

		messageService.add(msg);
		return "list";
	}

	public Message getMsg() {
		return msg;
	}

	public void setMsg(Message msg) {
		this.msg = msg;
	}

}

第六步：在web.xml中配置启动Struts2框架的过滤器。

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

第七步：编写JSP显示页面。

首页跳转index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

主页：main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@taglib uri="http://hi.csdn.net/tjcyjd/tags" prefix="myTag" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>在线留言系统</title>
<meta http-equiv=content-type content="text/html; charset=UTF-8">
<link href="images/style.css" type=text/css rel=stylesheet></link>
<style type="text/css">
body{font-size: 12px}
table{font-size: 12px}
a{font-size:12px}
.current{font-size:12px;}
</style>

</head>
<body><!--留言表单 -->
<form name=form1 action="msg/add.action" method=post>
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>请 签 写 留 言</span> </td></tr>
  <tr>
    <td align=right width="20%">您的称呼： </td>
    <td width="80%"><input id="username" maxlength=50 name="msg.nickname"/> </td></tr>
  <tr>
    <td align=right width="20%">您的性别： </td>
    <td width="80%"><input id=sex type=radio value="true" name="msg.gender">
      男    <input type=radio checked value="false" name="msg.gender"> 女
  </td></tr>
  <tr>
    <td align=right>选择头像： </td>
    <td><select id=image name="msg.header_img"> <option
        value=1.gif selected>1.gif</option> <option
        value=2.gif>2.gif</option> <option
        value=3.gif>3.gif</option> <option
        value=4.gif>4.gif</option> <option
        value=5.gif>5.gif</option> <option
        value=6.gif>6.gif</option> <option
        value=7.gif>7.gif</option> <option
        value=8.gif>8.gif</option> <option
        value=9.gif>9.gif</option> <option
        value=10.gif>10.gif</option> <option
        value=11.gif>11.gif</option> <option
        value=12.gif>12.gif</option> <option
        value=13.gif>13.gif</option> <option
        value=14.gif>14.gif</option> <option
        value=15.gif>15.gif</option> <option
        value=16.gif>16.gif</option> <option
        value=17.gif>17.gif</option> <option
        value=18.gif>18.gif</option> <option
        value=19.gif>19.gif</option> <option
        value=20.gif>20.gif</option></select> </td></tr>
  <tr>
    <td align=right>您的qq： </td>
    <td><input id=qq maxlength=50 name="msg.qq"> </td></tr>
  <tr>
    <td align=right>您的邮箱： </td>
    <td><input id=email maxlength=50 name="msg.email"> </td></tr>
  <tr>
    <td align=right>留言内容： </td>
    <td><textarea id=content name="msg.content" rows=5 cols=50></textarea>
  </td></tr>
  <tr>
    <td align="center" colspan=2><input type=submit value=提交>
<input type=reset value=重置> </td></tr></tbody></table></form><!--留言表单结束 --><!--留言列表 -->
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>留 言 列 表【<a href="login.jsp">管理登录</a>】 </span></td></tr>

<c:forEach items="${pm.data}" var="msg">
  <tr>
    <td align="center" width="20%" rowspan=4>你好 : ${msg.nickname} ${msg.gender ? "帅哥" : "靓妹"} <br><br><img
      src="images/${msg.header_img}"> </td></tr>
  <tr>
    <td width="80%" height="100%">发表于: <fmt:formatDate value="${msg.pubTime}" pattern="yyyy-MM-dd HH:mm:ss"/>   <img
      src="images/8_online.gif" border=0> <a href="mailto:${msg.email}"><img
      src="images/email.gif" border=0></a> <img src="images/ip.gif"
      border=0> 来自:${msg.ip}</td></tr>
  <tr>
    <td>${msg.content}</td></tr>
  <tr>
    <td><font color=#ff0000>管理员回复：</font> </td></tr>
</c:forEach>

</tbody></table><!--留言列表显示结束-->
    <!--分页链接 -->
    <myTag:pager pageSize="${pm.pageSize}" pageNo="${pm.pageNo}" url="index.action" recordCount="${pm.recordCount}"/>
    <!--分页链接结束 -->
</body></html>

下面就简单学习下Struts2+Hibernate的整合。

其实就七个步骤：

第一步：添加所需的jar包。

第二步：创建实体类以及对应的映射文件。

第三步：配置hibernate.cfg.xml配置文件。

第四步：配置struts.xml配置文件。

第五步：创建相应的action。

第六步：在web.xml中配置启动Struts2框架的过滤器。

第七步：编写JSP显示页面。

---------------------------------------------------------------------------------------------------------------------------

具体细节及代码如下（代码仅供参考）：

第一步：jar包的添加这里不多说。

第二步：

实体类Message.java

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 *
 * @author yjd
 */
public class Message implements Serializable {

    private static final long serialVersionUID = 6617253915349620625L;
    private Integer id; // OID
    private String nickname; // 昵称
    private boolean gender; // 性别
    private String header_img; // 头像
    private String qq; // qq
    private String email; // 邮箱号
    private String content; // 留言内容
    private String ip; // 发布者的IP地址
    private Date pubTime; // 留言时间
    private String reply;// 管理员回复内容
    private Date replyTime; // 回复时间

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getNickname() {
        return nickname;
    }

    public void setNickname(String nickname) {
        this.nickname = nickname;
    }

    public boolean isGender() {
        return gender;
    }

    public void setGender(boolean gender) {
        this.gender = gender;
    }

    public String getHeader_img() {
        return header_img;
    }

    public void setHeader_img(String headerImg) {
        header_img = headerImg;
    }

    public String getQq() {
        return qq;
    }

    public void setQq(String qq) {
        this.qq = qq;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public Date getPubTime() {
        return pubTime;
    }

    public void setPubTime(Date pubTime) {
        this.pubTime = pubTime;
    }

    public String getReply() {
        return reply;
    }

    public void setReply(String reply) {
        this.reply = reply;
    }

    public Date getReplyTime() {
        return replyTime;
    }

    public void setReplyTime(Date replyTime) {
        this.replyTime = replyTime;
    }

    @Override
    public String toString() {
        return "Message [content=" + content + ", email=" + email + ", gender="
                + gender + ", header_img=" + header_img + ", id=" + id
                + ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
                + pubTime + ", qq=" + qq + "]";
    }

}

/**
 *  ClassName: Message.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.domain;

import java.io.Serializable;
import java.util.Date;

/**
 * 留言实体类
 * 
 * @author yjd
 */
public class Message implements Serializable {

	private static final long serialVersionUID = 6617253915349620625L;
	private Integer id; // OID
	private String nickname; // 昵称
	private boolean gender; // 性别
	private String header_img; // 头像
	private String qq; // qq
	private String email; // 邮箱号
	private String content; // 留言内容
	private String ip; // 发布者的IP地址
	private Date pubTime; // 留言时间
	private String reply;// 管理员回复内容
	private Date replyTime; // 回复时间

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getNickname() {
		return nickname;
	}

	public void setNickname(String nickname) {
		this.nickname = nickname;
	}

	public boolean isGender() {
		return gender;
	}

	public void setGender(boolean gender) {
		this.gender = gender;
	}

	public String getHeader_img() {
		return header_img;
	}

	public void setHeader_img(String headerImg) {
		header_img = headerImg;
	}

	public String getQq() {
		return qq;
	}

	public void setQq(String qq) {
		this.qq = qq;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String getIp() {
		return ip;
	}

	public void setIp(String ip) {
		this.ip = ip;
	}

	public Date getPubTime() {
		return pubTime;
	}

	public void setPubTime(Date pubTime) {
		this.pubTime = pubTime;
	}

	public String getReply() {
		return reply;
	}

	public void setReply(String reply) {
		this.reply = reply;
	}

	public Date getReplyTime() {
		return replyTime;
	}

	public void setReplyTime(Date replyTime) {
		this.replyTime = replyTime;
	}

	@Override
	public String toString() {
		return "Message [content=" + content + ", email=" + email + ", gender="
				+ gender + ", header_img=" + header_img + ", id=" + id
				+ ", ip=" + ip + ", nickname=" + nickname + ", pubTime="
				+ pubTime + ", qq=" + qq + "]";
	}

}

实体类映射文件Message.hbm.xml.

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="com.yjd.nb.domain.Message" table="msg">
        <id name="id" column="id">
            <generator class="native" />
        </id>

        <property name="nickname" />
        <property name="gender" />
        <property name="header_img" />
        <property name="qq" />
        <property name="email" />
        <property name="ip" />
        <property name="content" />
        <property name="pubTime" column="pub_time" />
        <property name="reply" />
        <property name="replyTime" column="reply_time" />
    </class>
</hibernate-mapping>

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
	<class name="com.yjd.nb.domain.Message" table="msg">
		<id name="id" column="id">
			<generator class="native" />
		</id>

		<property name="nickname" />
		<property name="gender" />
		<property name="header_img" />
		<property name="qq" />
		<property name="email" />
		<property name="ip" />
		<property name="content" />
		<property name="pubTime" column="pub_time" />
		<property name="reply" />
		<property name="replyTime" column="reply_time" />
	</class>
</hibernate-mapping>

第三步：Hibernate配置文件hibernate.cfg.xml.

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
    <!-- 数据库的连接参数配置 -->
    <property name="hibernate.connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="hibernate.connection.url">
        jdbc:mysql:///s2h-model
    </property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>

    <!-- 数据库方言 -->
    <property name="hibernate.dialect">
        org.hibernate.dialect.MySQLDialect
    </property>

    <!-- c3p0连接池的配置 -->
    <property name="connection.provider_class">
        org.hibernate.connection.C3P0ConnectionProvider
    </property>
    <property name="hibernate.c3p0.min_size">5</property>
    <property name="hibernate.c3p0.max_size">30</property>
    <property name="hibernate.c3p0.timeout">1800</property>
    <property name="hibernate.c3p0.max_statements">50</property>

    <!-- 其它配置 -->
    <property name="hbm2ddl.auto">update</property>
    <property name="show_sql">true</property>
    <!-- <property name="format_sql">true</property> -->

    <!-- 注册映射文件 -->
    <mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
	<!-- 数据库的连接参数配置 -->
	<property name="hibernate.connection.driver_class">
		com.mysql.jdbc.Driver
	</property>
	<property name="hibernate.connection.url">
		jdbc:mysql:///s2h-model
	</property>
	<property name="hibernate.connection.username">root</property>
	<property name="hibernate.connection.password">root</property>

	<!-- 数据库方言 -->
	<property name="hibernate.dialect">
		org.hibernate.dialect.MySQLDialect
	</property>

	<!-- c3p0连接池的配置 -->
	<property name="connection.provider_class">
		org.hibernate.connection.C3P0ConnectionProvider
	</property>
	<property name="hibernate.c3p0.min_size">5</property>
	<property name="hibernate.c3p0.max_size">30</property>
	<property name="hibernate.c3p0.timeout">1800</property>
	<property name="hibernate.c3p0.max_statements">50</property>

	<!-- 其它配置 -->
	<property name="hbm2ddl.auto">update</property>
	<property name="show_sql">true</property>
	<!-- <property name="format_sql">true</property> -->

	<!-- 注册映射文件 -->
	<mapping resource="com/yjd/nb/domain/Message.hbm.xml" />

</session-factory>
</hibernate-configuration>

 

第四步：Struts2配置文件struts.xml.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <!--
        在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
        1.struts.i18n.encoding=UTF-8：请求消息的编码方式
        2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
        3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
        4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
        5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
        6.struts.objectFactory=spring：指定由spring负责action对象的创建
        7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
        8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
        9.struts.ui.theme=simple：UI主题类型
    -->
    <constant name="struts.action.extension" value="action,do,htm" />
    <constant name="struts.configuration.xml.reload" value="true" />
    <constant name="struts.devMode" value="false" />
    <constant name="struts.serve.static.browserCache" value="false" />

    <!-- Struts2以package形式管理Action的配置 -->
    <!--
        package常用的属性：
        1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
        2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
        3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
        4.abstract：声明包为抽象的。抽象包中不能配置action。
    -->
    <package name="front" namespace="/" extends="struts-default">
        <action name="index" class="com.yjd.nb.web.action.IndexAction">
            <result>/main.jsp</result>
        </action>
    </package>
    <package name="front.msgOpt" namespace="/msg" extends="struts-default">
        <action name="add" class="com.yjd.nb.web.action.MsgAction"
            method="add">
            <result name="list" type="redirect">/index.action</result>
        </action>
    </package>
</struts>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
    "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<!--
		在struts.xml文件中可以使用<constant>标记来对default.properties中的常量属性做覆盖性配置，最常更改的几个常量属性是：
		1.struts.i18n.encoding=UTF-8：请求消息的编码方式
		2.struts.action.extension=action：指定被struts2处理的请求后缀类型。多个用逗号隔开。如：action,do,go
		3.struts.configuration.xml.reload=false：当struts.xml改动后，是否重新加载。默认值为false(生产环境下使用),开发阶段最好打开
		4.struts.devMode=false：是否使用struts的开发模式。开发模式会有更多的调试信息。默认值为false(生产环境下使用),开发阶段最好打开
		5.struts.serve.static.browserCache=true：设置浏览器是否缓存静态内容。默认值为true(生产环境下使用),开发阶段最好关闭。
		6.struts.objectFactory=spring：指定由spring负责action对象的创建
		7.struts.enable.SlashesInActionNames=false：启用Action的name是否支持斜线(/)
		8.struts.enable.DynamicMethodInvocation=false：启用动态方法调用
		9.struts.ui.theme=simple：UI主题类型
	-->
	<constant name="struts.action.extension" value="action,do,htm" />
	<constant name="struts.configuration.xml.reload" value="true" />
	<constant name="struts.devMode" value="false" />
	<constant name="struts.serve.static.browserCache" value="false" />

	<!-- Struts2以package形式管理Action的配置 -->
	<!--
		package常用的属性：
		1.name：包名，作为被其它包引用的标识。必须的。实际应用中，应该把一组业务功能相关的Action放在同一个包下。
		2.extends：指定要扩展的包名。一般会继承自struts-default包。struts-default包是struts2内置的，它定义了struts2内部的众多拦截器和Result类型。
		3.namespace：指定名称空间。Struts2中Action的请求URI映射由namespace和action名称两部分组成。如果不指定该属性，默认的命名空间为""（空字符串）。
		4.abstract：声明包为抽象的。抽象包中不能配置action。
	-->
	<package name="front" namespace="/" extends="struts-default">
		<action name="index" class="com.yjd.nb.web.action.IndexAction">
			<result>/main.jsp</result>
		</action>
	</package>
	<package name="front.msgOpt" namespace="/msg" extends="struts-default">
		<action name="add" class="com.yjd.nb.web.action.MsgAction"
			method="add">
			<result name="list" type="redirect">/index.action</result>
		</action>
	</package>
</struts>

第五步：创建action类。

跳转到首页的action:

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 *
 * @author yjd
 */
public class IndexAction extends ActionSupport {
    private static final long serialVersionUID = -3634083788212536690L;
    private MessageService messageService = new MessageService();
    private int pageNo = 1;
    private int pageSize = 10;

    public String execute() {
        PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

        ServletActionContext.getRequest().setAttribute("pm", pm);
        // ActionContext.getContext().put("pm", pm);
        return SUCCESS;
    }

    public MessageService getMessageService() {
        return messageService;
    }

    public void setMessageService(MessageService messageService) {
        this.messageService = messageService;
    }

    public int getPageNo() {
        return pageNo;
    }

    public void setPageNo(int pageNo) {
        this.pageNo = pageNo;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
}

/**
 *  ClassName: IndexAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.domain.common.PageModel;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 首页的请求处理类
 * 
 * @author yjd
 */
public class IndexAction extends ActionSupport {
	private static final long serialVersionUID = -3634083788212536690L;
	private MessageService messageService = new MessageService();
	private int pageNo = 1;
	private int pageSize = 10;

	public String execute() {
		PageModel<Message> pm = messageService.findByPage(pageNo, pageSize);

		ServletActionContext.getRequest().setAttribute("pm", pm);
		// ActionContext.getContext().put("pm", pm);
		return SUCCESS;
	}

	public MessageService getMessageService() {
		return messageService;
	}

	public void setMessageService(MessageService messageService) {
		this.messageService = messageService;
	}

	public int getPageNo() {
		return pageNo;
	}

	public void setPageNo(int pageNo) {
		this.pageNo = pageNo;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}
}

实体操作action：

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 *
 * @author yjd
 */
public class MsgAction extends ActionSupport {
    private static final long serialVersionUID = -5736885633645314440L;
    private MessageService messageService = new MessageService();
    private Message msg;

    // 添加实体
    public String add() {
        msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
        msg.setPubTime(new Date());

        messageService.add(msg);
        return "list";
    }

    public Message getMsg() {
        return msg;
    }

    public void setMsg(Message msg) {
        this.msg = msg;
    }

}

/**
 *  ClassName: MsgAction.java
 *  Created on 2011
 *  Copyrights 2011 hi.csdn.net/tjcyjd All rights reserved.
 *  site: http://hi.csdn.net/tjcyjd
 *  email: [email protected]
 */
package com.yjd.nb.web.action;

import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;
import com.yjd.nb.domain.Message;
import com.yjd.nb.service.MessageService;

/**
 * 前台针对Msg操作的处理类
 * 
 * @author yjd
 */
public class MsgAction extends ActionSupport {
	private static final long serialVersionUID = -5736885633645314440L;
	private MessageService messageService = new MessageService();
	private Message msg;

	// 添加实体
	public String add() {
		msg.setIp(ServletActionContext.getRequest().getRemoteAddr());
		msg.setPubTime(new Date());

		messageService.add(msg);
		return "list";
	}

	public Message getMsg() {
		return msg;
	}

	public void setMsg(Message msg) {
		this.msg = msg;
	}

}

第六步：在web.xml中配置启动Struts2框架的过滤器。

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
	</filter>
	
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

第七步：编写JSP显示页面。

首页跳转index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%--<jsp:forward page="index.action"/> --%>
<meta http-equiv="refresh" content="0;url=index.action" />

主页：main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@taglib uri="http://hi.csdn.net/tjcyjd/tags" prefix="myTag" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>在线留言系统</title>
<meta http-equiv=content-type content="text/html; charset=UTF-8">
<link href="images/style.css" type=text/css rel=stylesheet></link>
<style type="text/css">
body{font-size: 12px}
table{font-size: 12px}
a{font-size:12px}
.current{font-size:12px;}
</style>

</head>
<body><!--留言表单 -->
<form name=form1 action="msg/add.action" method=post>
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>请 签 写 留 言</span> </td></tr>
  <tr>
    <td align=right width="20%">您的称呼： </td>
    <td width="80%"><input id="username" maxlength=50 name="msg.nickname"/> </td></tr>
  <tr>
    <td align=right width="20%">您的性别： </td>
    <td width="80%"><input id=sex type=radio value="true" name="msg.gender">
      男    <input type=radio checked value="false" name="msg.gender"> 女
  </td></tr>
  <tr>
    <td align=right>选择头像： </td>
    <td><select id=image name="msg.header_img"> <option
        value=1.gif selected>1.gif</option> <option
        value=2.gif>2.gif</option> <option
        value=3.gif>3.gif</option> <option
        value=4.gif>4.gif</option> <option
        value=5.gif>5.gif</option> <option
        value=6.gif>6.gif</option> <option
        value=7.gif>7.gif</option> <option
        value=8.gif>8.gif</option> <option
        value=9.gif>9.gif</option> <option
        value=10.gif>10.gif</option> <option
        value=11.gif>11.gif</option> <option
        value=12.gif>12.gif</option> <option
        value=13.gif>13.gif</option> <option
        value=14.gif>14.gif</option> <option
        value=15.gif>15.gif</option> <option
        value=16.gif>16.gif</option> <option
        value=17.gif>17.gif</option> <option
        value=18.gif>18.gif</option> <option
        value=19.gif>19.gif</option> <option
        value=20.gif>20.gif</option></select> </td></tr>
  <tr>
    <td align=right>您的qq： </td>
    <td><input id=qq maxlength=50 name="msg.qq"> </td></tr>
  <tr>
    <td align=right>您的邮箱： </td>
    <td><input id=email maxlength=50 name="msg.email"> </td></tr>
  <tr>
    <td align=right>留言内容： </td>
    <td><textarea id=content name="msg.content" rows=5 cols=50></textarea>
  </td></tr>
  <tr>
    <td align="center" colspan=2><input type=submit value=提交>
<input type=reset value=重置> </td></tr></tbody></table></form><!--留言表单结束 --><!--留言列表 -->
<table class=tab cellspacing=1 align=center border=0>
  <tbody>
  <tr>
    <td class=title background=images/titlebg.jpg colspan=2
      height=25><span>留 言 列 表【<a href="login.jsp">管理登录</a>】 </span></td></tr>

<c:forEach items="${pm.data}" var="msg">
  <tr>
    <td align="center" width="20%" rowspan=4>你好 : ${msg.nickname} ${msg.gender ? "帅哥" : "靓妹"} <br><br><img
      src="images/${msg.header_img}"> </td></tr>
  <tr>
    <td width="80%" height="100%">发表于: <fmt:formatDate value="${msg.pubTime}" pattern="yyyy-MM-dd HH:mm:ss"/>   <img
      src="images/8_online.gif" border=0> <a href="mailto:${msg.email}"><img
      src="images/email.gif" border=0></a> <img src="images/ip.gif"
      border=0> 来自:${msg.ip}</td></tr>
  <tr>
    <td>${msg.content}</td></tr>
  <tr>
    <td><font color=#ff0000>管理员回复：</font> </td></tr>
</c:forEach>

</tbody></table><!--留言列表显示结束-->
    <!--分页链接 -->
    <myTag:pager pageSize="${pm.pageSize}" pageNo="${pm.pageNo}" url="index.action" recordCount="${pm.recordCount}"/>
    <!--分页链接结束 -->
</body></html>