Struts2+spring2+hibernate3整合方案
最近闲来无事可做，于是开始学习struts2。Struts2和struts1、webwork2有什么区别我也不说了，网上有很多这方面的资料。以前在项目中从未使用过struts，一直使用spring+hibernate，现在既然学习了Struts，也不能浪费，于是乎开始琢磨着怎么整合这3个框架。整合原理以spring为容器，管理hibernate的DAO和Struts2的Action。
一、 准备工作
Struts2.06+spring2.5+hibernate3.2+jdk6.0+myeclipse6.0+tomcat5.5+mysql5.0
以上是整合的原料。下面以一个注册登陆的例子来开始我们的整合过程。
这个例子很简单，下面是它的sql脚本内容:
CREATE TABLE `user` (
  `userid` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(20) NOT NULL,
  `password` varchar(16) NOT NULL,
  `email` varchar(30) NOT NULL,
  PRIMARY KEY (`userid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf-8;
二、 开始行动
包结构可以参考下图
 
图一

 图二

图三
1) Struts部分:建立struts.xml和struts.properties
Struts.xml内容如下：

<?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>
    <package name="user_curd" extends="struts-default" >
        <global-results>
            <!-- 下面定义的结果对所有的Action都有效 -->
            <result name="exception">/error.jsp</result>
        </global-results>

        <global-exception-mappings>
            <!-- 指Action抛出Exception异常时，转入名为exception的结果。 -->
            <exception-mapping exception="java.lang.Exception" result="exception"/>
        </global-exception-mappings>

        <action name="Login" class="LoginAction">
            <result name="success">/success.jsp</result>    
            <result name="input">/login.jsp</result>
        </action>
        <action name="Regist" class="RegistAction">
            <result name="success">/success.jsp</result>    
            <result name="input">/regist.jsp</result>
        </action>
    </package> 
            
</struts>

Struts.properties内容如下:

2) 建立User.java和User.hbm.xml、jdbc.properties：
User.java内容如下:

/** *//** 
 * 
 * @author <a href="mailto:flustar2008@163.com">flustar</a>
 * @version 1.0 
 * Creation date: Dec 23, 2007 1:55:28 PM
 */
package com.firstssh.model;

import java.io.Serializable;

public class User implements Serializable {
    private int id;
    private String username;
    private String password;
    private String email;

    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;
    }

    public String getEmail() {
        return email;
    }

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

User.hbm.xml内容:

<?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.firstssh.model">

    <class name="User" table="User">
        <id name="id" column="userid">
            <generator class="identity" />
        </id>    
        <property name="username"
                  column="username"
                  not-null="true"
                  length="20"
        />
        <property name="password"
                  column="password"
                  not-null="true"
                  length="16" />
        <property name="email"
                  column="email"
                  not-null="true"
                  length="30"/>
    </class>
    
</hibernate-mapping>

jdbc.properties内容如下:

3) Spirng部分:为了清晰把Spring的配置文件拆分成以下几部分applicationContext-dao.xml、appliationContext-service.xml、applicationContext-hibernate.xml、action-servlet.xml。
applicationContext-hibernate.xml内容：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean id="propertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
            <!--  <value>WEB-INF/mail.properties</value>-->
            <value>WEB-INF/jdbc.properties</value>
            <!--  <value>WEB-INF/oscache.properties</value>-->
        </list>
    </property>
</bean>
<!-- MailSender used by EmailAdvice -->
<!--
    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="host" value="${mail.host}"/>
    </bean>
-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
    destroy-method="close" dependency-check="none">
    <property name="driverClass">
        <value>${datasource.driverClassName}</value>
    </property>
    <property name="jdbcUrl">
        <value>${datasource.url}</value>
    </property>
    <property name="user">
        <value>${datasource.username}</value>
    </property>
    <property name="password">
        <value>${datasource.password}</value>
    </property>
    <property name="acquireIncrement">
        <value>${c3p0.acquireIncrement}</value>
    </property>
    <property name="initialPoolSize">
        <value>${c3p0.initialPoolSize}</value>
    </property>
    <property name="minPoolSize">
        <value>${c3p0.minPoolSize}</value>
    </property>
    <property name="maxPoolSize">
        <value>${c3p0.maxPoolSize}</value>
    </property>
    <property name="maxIdleTime">
        <value>${c3p0.maxIdleTime}</value>
    </property>
    <property name="idleConnectionTestPeriod">
        <value>${c3p0.idleConnectionTestPeriod}</value>
    </property>
    <property name="maxStatements">
        <value>${c3p0.maxStatements}</value>
    </property>
    <property name="numHelperThreads">
        <value>${c3p0.numHelperThreads}</value>
    </property>
</bean>
<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="dataSource">
        <ref local="dataSource" />
    </property>
    <property name="mappingResources">
        <list>
            <value>com/firstssh/model/User.hbm.xml</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">${hibernate.dialect}</prop>
            <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
            <prop key="hibernate.jdbc.fetch_size">
                ${hibernate.jdbc.fetch_size}
            </prop>
            <prop key="hibernate.jdbc.batch_size">
                ${hibernate.jdbc.batch_size}
            </prop>
        </props>
    </property>
</bean>
<!-- 配置事务管理器bean,使用HibernateTransactionManager事务管理器 -->
<bean id="transactionManager"
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <!-- 为事务管理器注入sessionFactory" -->
        <property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- 配置事务拦截器Bean -->
<bean id="transactionInterceptor"
    class="org.springframework.transaction.interceptor.TransactionInterceptor">
    <!-- 为事务拦截器bean注入一个事物管理器 -->
    <property name="transactionManager" ref="transactionManager"></property>
    <property name="transactionAttributes">
    <!-- 定义事务传播属性 -->
        <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="add*">PROPAGATION_REQUIRED</prop>
                <prop key="remove*">PROPAGATION_REQUIRED</prop>
                <prop key="delete*">PROPAGATION_REQUIRED</prop>
                <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="change*">PROPAGATION_REQUIRED</prop>
                <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
        </props>
    </property>
</bean>
<!-- 定义BeanNameAutoProxyCreator -->
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
    <!-- 指定满足哪些bean自动生成业务代理 -->
    <property name="beanNames">
    <!-- 需要自动创建事务代理的bean -->
        <list>
            <value>userService</value>
        </list>
        <!-- 其它需要自动创建事务代理的bean -->
    </property>
    <property name="interceptorNames">
        <list>
            <value>transactionInterceptor</value>
            <!-- 可增加其它的interceptor -->
        </list>
    </property>
</bean>
</beans>

applicationContext-dao.xml内容:

applicationContext-service.xml内容:

action-servlet.xml内容:

以上几个xml文件的内容暂且不要理会，继续往下看，你就自动明白的，不用我解释。
4）日志部分:log4j.properties 、commons-logging.properties
log4j.properties内容:

commons-logging.properties
内容:

5)web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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" 
 version="2.4">
 <display-name>firstssh</display-name>
 <description>this is a simple example</description>
 <context-param>
  <param-name>webAppRootKey</param-name>
  <param-value>firstssh.root</param-value>
 </context-param>
 
 <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/applicationContext-*.xml,/WEB-INF/action-servlet.xml</param-value>
 </context-param>
 <context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>
 <listener>
  <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
 </listener>
 <!-- 用于初始化Spring容器的Listener -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
 
 
 <!-- 定义整合SiteMesh必须的ActionContextCleanUp Filter 
 <filter>
  <filter-name>struts-cleanup</filter-name>
  <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
 </filter>-->
 <!-- 定义Struts2的FilterDispathcer的Filter -->