Struts2+spring2+hibernate3整合方案（1）

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






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

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<!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:

struts.devMode=false
struts.enable.DynamicMethodInvocation=true
struts.i18n.reload=true
struts.ui.theme=simple

struts.locale=zh_CN
struts.i18n.encoding=UTF-8
struts.objectFactory=spring
struts.objectFactory.spring.autoWire=name

struts.serve.static.browserCache=false
struts.url.includeParams=none

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

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-->/** *//**
*
* @author <a href="mailto:[e-mail]">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 

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--><?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:

datasource.type=mysql
datasource.driverClassName=com.mysql.jdbc.Driver
datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8

datasource.username=root
datasource.password=123456

datasource.maxActive=10
datasource.maxIdle=2
datasource.maxWait=120000
datasource.whenExhaustedAction=1
datasource.validationQuery=select 1 from dual
datasource.testOnBorrow=true
datasource.testOnReturn=false

c3p0.acquireIncrement=3
c3p0.initialPoolSize=3
c3p0.idleConnectionTestPeriod=900
c3p0.minPoolSize=2
c3p0.maxPoolSize=50
c3p0.maxStatements=100
c3p0.numHelperThreads=10
c3p0.maxIdleTime=600

hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect
#hibernate.dialect=org.hibernate.dialect.MySQLMyISAMDialect

hibernate.jdbc.batch_size=25
hibernate.jdbc.fetch_size=50
hibernate.show_sql=true
hibernate.connection.release_mode=after_transaction

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：

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<!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="update*">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>