图解SSH三大框架整合及事务处理
SSH登录案例
sshlogin项目
1创建用户 ssh ssh
2创建表： login id name password
3新建项目：loginssh
4添加struts的jar包
4.1）移除项目包
添加struts2.3.4下面的8个包
5添加hibernate包
5.1)注意添加hibernate3.3
点next安钮
没有连接，所以不选择等以后创建
点next,也不创建sessionFactory
最后点击finash按钮
开始创建连接数据库
选择new创建一个连接
添加show_sql 值：true
6添加Spring支持
“前四后一“并放在lib下
点击next创建applicationContext.xml放在WEB-INF/
点击next
最后点击finash按钮
7修改web.xml文件，添加Springlistener
8:测试项目所有包的正确性:
布署项目到tomcat并启动
确保正常显示页面，表表示jar包没冲突，项目无框架问题
8.1)添加struts2-spring-plugin.jar包
(此包用来表明由sping来管理struts中的action)
测试完毕，正常显示测试页面，表明三大框架整合完毕
以下是业务逻辑
9:反转生成实体类
9.1)包：com.hzh.entity
9.2)反转生成实体类及配置文件
接着：
接下来:
下一步，next,next
直到:注意添写包名.类名
Finash结束反转回到myEclipse视图
注意：修改id的类型为int
以下是源代码：
package com.hzh.entity;
import java.math.BigDecimal;
/** * Login entity. @author MyEclipse Persistence Tools */
public class Login implements java.io.Serializable {
// Fields
private int id; private String name; private String password;
// Constructors
/** default constructor */ public Login() { }
/** minimal constructor */ public Login(int id) { this.id = id; }
/** full constructor */ public Login(int id, String name, String password) { this.id = id; this.name = name; this.password = password; }
// Property accessors
public int getId() { return this.id; }
public void setId(int id) { this.id = id; }
public String getName() { return this.name; }
public void setName(String name) { this.name = name; }
public String getPassword() { return this.password; }
public void setPassword(String password) { this.password = password; }
} |
以下是Loign.hbm.xml
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <!-- Mapping file autogenerated by MyEclipse Persistence Tools --> <hibernate-mapping> <class name="com.hzh.entity.Login" table="LOGIN" schema="SSH"> <id name="id" type="int"> <column name="ID" precision="22" scale="0" /> <generator class="assigned"></generator> </id> <property name="name" type="java.lang.String"> <column name="NAME" length="4000" /> </property> <property name="password" type="java.lang.String"> <column name="PASSWORD" length="4000" /> </property> </class> </hibernate-mapping>
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9.2)修改hibernate.cfg.xml添加Login.hbm.xml
<mapping resource="com/hzh/entity/Login.hbm.xml" />
10完成DAO接口
10.1)建包：
com.hzh.dao
10.2)写一个LoginDao接口
package com.hzh.dao;
import java.util.List;
import com.hzh.entity.Login;
public interface LoginDao { public List<Login>find(Login condition); }
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10.3)创建包
com.hzh.dao.hibimp
并创建一个实现类
LoginDaoHibImpl类
package com.hzh.dao.hibimpl;
import java.util.List;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.hzh.dao.LoginDao; import com.hzh.entity.Login;
public class LoginDaoHibImpl extends HibernateDaoSupport implements LoginDao {
public List<Login> find(Login condition) { String hql="from Login l where l.name='"+ condition.getName()+"' and l.password='"+ condition.getPassword()+"'"; return this.getHibernateTemplate().find(hql);
}
} |
11创建biz层
com.hzh.biz
并创建一个接口
LoginBiz
package com.hzh.biz;
import com.hzh.entity.Login;
public interface LoginBiz { public Login login(Login login)throws Exception; }
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11．2）创建bizimpl
并填加LoginBizImpl
package com.hzh.biz.impl;
import java.util.List;
import com.hzh.biz.LoginBiz; import com.hzh.dao.LoginDao; import com.hzh.entity.Login;
public class LoginBizImpl implements LoginBiz { //注入dao LoginDao loginDao;
public void setLoginDao(LoginDao loginDao) { this.loginDao = loginDao; }
public Login login(Login login) throws Exception { Login ret=null; List<Login>list=loginDao.find(login); if(list==null){ throw new Exception("查无此人"); }else{ ret=list.get(0);
} return ret; }
}
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12创建action
com.hzh.action
并创建LoginAction.java
package com.hzh.action;
import com.hzh.biz.LoginBiz; import com.hzh.entity.Login; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport { private Login login; // 注入biz private LoginBiz loginBiz;
public String login() throws Exception { String ret = INPUT; Login newLogin = null; newLogin = loginBiz.login(login); if (newLogin == null) { System.out.println("查无此人"); } else {
ret =SUCCESS; } return ret;
}
public void setLoginBiz(LoginBiz loginBiz) { this.loginBiz = loginBiz; }
public void setLogin(Login login) { this.login = login; }
public Login getLogin() { return login; } }
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13:View
Login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head>
<title>登录页面</title>
</head>
<body> <h1>登录</h1>
<s:actionmessage/> <s:form action="login"> <s:textfield name="login.name" label="用户名"/> <s:password name="login.password" label="密码"/> <s:submit value="登录"></s:submit> </s:form> </body> </html>
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Success.jsp
登录成功！ |
14配置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> <constant name="struts.i18n.encoding" value="utf-8" />
<package name="default" extends="struts-default">
<action name="login" class="loginAction" method="login"> <result name="input">/login.jsp</result> <result name="success">/success.jsp</result> </action> </package>
</struts>
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15applicationContext.xml
15.1）先注入loginDao
15.2)然后注入loginBiz
15.3)最后注入loginAction
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation" value="classpath:hibernate.cfg.xml"> </property> </bean> <!-- dao --> <bean id="loginDao" class="com.hzh.dao.hibimpl.LoginDaoHibImpl"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <!-- biz --> <bean id="loginBiz" class="com.hzh.biz.impl.LoginBizImpl"> <property name="loginDao" ref="loginDao"/> </bean> <!-- 配置action --> <bean id="loginAction" class="com.hzh.action.LoginAction"> <property name="loginBiz" ref="loginBiz"/> </bean>
</beans> |
Web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list>
<!-- 配置加载spring配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value> /WEB-INF/applicationContext.xml </param-value>
</context-param> <!-- 配置spring监听 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
<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>
</web-app>
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升级项目添加事务管理
1增加beans头的命名空间aop,tx
2增加txManager节点(创建事务管理器)
3声明通知<tx:advice>结点
3声明方面<aop>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation" value="classpath:hibernate.cfg.xml"> </property> </bean> <!-- 配置事务 --> <!-- 配置事务的管理器 --> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <!-- 配置属性 --> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 声明规则通知 -->
<tx:advice id="txAdvice" transaction-manager="txManager"> <!-- 哪些方法应用规则 get/find/query/search/add.... --> <tx:attributes> <tx:method name="get*" read-only="true" /> <tx:method name="find*" read-only="true" /> <tx:method name="query*" read-only="true" /> <tx:method name="search*" read-only="true" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="del*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="check*" propagation="REQUIRED" /> <tx:method name="do*" propagation="REQUIRED" /> <tx:method name="*" propagation="REQUIRED" read-only="true" />
</tx:attributes> </tx:advice> <!-- 程序的哪些方法应用这些规则 ，让通知通知谁应用规则 --> <aop:config> <aop:pointcut expression="execution(* com.hzh.biz.*.*(..))" id="bizMethod"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="bizMethod"/> </aop:config> <!-- dao --> <bean id="loginDao" class="com.hzh.dao.hibimpl.LoginDaoHibImpl"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <!-- biz --> <bean id="loginBiz" class="com.hzh.biz.impl.LoginBizImpl"> <property name="loginDao" ref="loginDao"/> </bean> <!-- 配置action --> <bean id="loginAction" class="com.hzh.action.LoginAction"> <property name="loginBiz" ref="loginBiz"/> </bean>
</beans> |