struts2，hibernate，spring三大框架整合的注册程序(xml 配置,mysql数据库)

首先呢，新建一个web project，然后导入struts2，hibernate，spring的jar包。

接下来在web.xml下新加listener和filter，分别针对spring和struts2的。web.xml的代码如下：

<?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>register.jsp</welcome-file> </welcome-file-list> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <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>

。在src下新建下面这些包：

com.guang.action，com.guang.dao，com.guang.dao.impl，com.guang.service，com.guang.service.impl，com.guang.model.

在model下新建实体类User：

package com.guang.model; public class User { private int id; private String username; private String password; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } 再在model下新建User.hbm.xml，与User POJO相对应，代码如下：

<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.guang.model"> <class name="User" table="user"> <id name="id" column="id" type="integer"> <generator class="identity"></generator> </id> <property name="username" column="username" type="string"></property> <property name="password" column="password" type="string"></property> </class> </hibernate-mapping>下面完成dao层：

dao下新建接口：UserDAO,代码如下：

package com.guang.dao; import com.guang.model.User; public interface UserDAO { public boolean exist(User user); public void save(User user); }
再在dao.impl下新建类UserDAOImpl，继承自UserDAO，代码如下：

package com.guang.dao.impl; import java.util.List; import org.hibernate.Session; import org.springframework.orm.hibernate3.HibernateTemplate; import com.guang.dao.UserDAO; import com.guang.model.User; import com.guang.util.HibernateUtil; public class UserDAOImpl implements UserDAO { private HibernateTemplate hibernateTemplate; public void save(User user) { hibernateTemplate.save(user); } public boolean exist(User user) { String hql="from User u where u.username='"+user.getUsername()+"'"; List<User> users=hibernateTemplate.find(hql); int count=users.size(); if(count>0 && users !=null){ return true; } return false; } public void setHibernateTemplate(HibernateTemplate hibernateTemplate) { this.hibernateTemplate = hibernateTemplate; } public HibernateTemplate getHibernateTemplate() { return hibernateTemplate; } }
下面完成service层：

在service下新建接口UserService，代码如下：

package com.guang.service; import com.guang.model.User; public interface UserService { public boolean exist(User user); public void addUser(User user); }
再在service.impl下新建UserServiceImpl继承自UserService，代码如下：

package com.guang.service.impl; import com.guang.dao.UserDAO; import com.guang.dao.impl.UserDAOImpl; import com.guang.model.User; import com.guang.service.UserService; public class UserServiceImpl implements UserService { UserDAO userdao; public UserDAO getUserdao() { return userdao; } public void setUserdao(UserDAO userdao) { this.userdao = userdao; } public void addUser(User user) { this.userdao.save(user); } public boolean exist(User user) { if(userdao.exist(user)){ return true; } return false; } }

接下来在action下面新建UserAction类。负责完成注册的，代码如下：

package com.guang.action; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.guang.model.User; import com.guang.service.UserService; import com.guang.service.impl.UserServiceImpl; import com.opensymphony.xwork2.ActionSupport; public class RegisterAction extends ActionSupport { UserService userservice; public UserService getUserservice() { return userservice; } public void setUserservice(UserService userservice) { this.userservice = userservice; } private String username; private String password; private String repassword; @Override public String execute() throws Exception { User user=new User(); user.setUsername(username); user.setPassword(password); if(userservice.exist(user)){ return "fail"; } userservice.addUser(user); return SUCCESS; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getRepassword() { return repassword; } public void setRepassword(String repassword) { this.repassword = repassword; } }
到现在为止，Java的代码基本已经写完了。

接下来配置struts.xml，代码如下：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.devMode" value="true" /> <constant name="struts.i18n.encoding" value="GBK"></constant> <!-- 允许静态成员访问 --> <constant name="struts.ognl.allowStaticMethodAccess" value="true" ></constant> <!-- Add packages here --> <package name="ssh_01" extends="struts-default" > <action name="register" class="com.guang.action.RegisterAction"> <result name="fail">/register_fail.jsp</result> <result name="success">/register_success.jsp</result> </action> </package> </struts>
接下来配置最核心的spring的配置文件，applicationContext.xml，代码如下：

<?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" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:annotation-config/> <context:component-scan base-package="com.guang"></context:component-scan> <!-- <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/spring"/> <property name="username" value="root"/> <property name="password" value="guang"/> </bean> --> <!-- 第二种连接方式 --> <!-- <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="com.mysql.jdbc.Driver" p:url="jdbc:mysql://localhost:3306/spring" p:username="root" p:password="guang" /> --> <!-- 第三种连接方式 --> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations" value="classpath:jdbc.properties"/> </bean> <bean id="datasource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="${jdbc.driverClassName}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean> <!-- annotation 配置 model <bean id="SessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="datasource"/> <property name="annotatedClasses"> <list> <value >com.guang.model.User</value> </list> </property> --> <!--xml配置model --> <bean id="SessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="datasource"/> <property name="mappingResources" > <list> <value >com/guang/model/User.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <value> <!-- 数据库方言 --> hibernate.dialect=org.hibernate.dialect.MySQLDialect <!-- 是否显示sql语句 --> hibernate.show_sql=true <!-- --> hibernate.hbm2ddl.auto=update <!--显示sql语句格式化 --> hibernate.format_sql=true hibernate.cache.provider_class=org.hibernate.cache.NoCacheProvider </value> </property> </bean> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"> <property name="sessionFactory" ref="SessionFactory"></property> </bean> <bean id="userdao" class="com.guang.dao.impl.UserDAOImpl"> <property name="hibernateTemplate" ref="hibernateTemplate"></property> </bean> <bean id="userservice" class="com.guang.service.impl.UserServiceImpl"> <property name="userdao" ref="userdao"></property> </bean> <bean id="register" class="com.guang.action.RegisterAction" scope="prototype"> <property name="userservice" ref="userservice"></property> </bean> </beans>

以上的applicationContext.xml中需要注意的是，我列出了三种datasource的实现，最终没被注释这种，也就是实现这种，需要在src下面新建文件：jdbc.properties，将数据库的连接属性写在里面，方便修改，代码如下，可根据自己的实际来修改：jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssh_01 jdbc.username=root jdbc.password=guang

注意，除了struts2，hibernate，spring所需的jar包之外，还需要一个jar包，是struts2的用来引进spring来管理自己的action类（也就是dao下面的类）。我这个struts2的版本是：struts2-spring-plugin-2.2.3.1.jar。需要把这个包放到ib下。

还有一点需要注意的是：

在struts.xml里面的action的name属性，必须和applicationContext.xml里面配置的bean同名。

到此，这个小程序就完成了。主要的想法就是整合三大框架到一起。jsp页面在此省略。