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：
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?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:
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:
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->/** *//**** @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?
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?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-mappingpackage="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：
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?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" 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>