SSH 框架整合（maven版本 xml配置方式 连接池c3p0）

如何整合Struts2 Hibernate 和Spring 首先你必须了解三个框架是如何独立运行的：

代码下载：http://download.csdn.net/detail/zhanglinlang/9775160

Struts2 是通过在web.xml 中 Filter拦截器来启动自己的核心类StrutsPrepareAndExecuteFilter，完成事件的分发。

Spring 是通过 在web.xml 注册监听器来监听ContextLoaderListener，监听web应用的启动事件来完成自己的框架启动工作。

Hibernate 是通过创建SessionFactory工厂手动加载配置文件来完成启动工作，Hibernate是可以通过代码创建SessionFactory，就可以交给Spring通过ioc来控制该类的实例化。

下面就是整合代码：目录结构如下



首先在resource目录下创建 config目录方便管理：

首先配置

Hibernate ：

<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory name="foo">

<!--  配置   打印sql语句到控制台   可选 -->
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<!--
（重要配置）Hibernate自动建表 配置
create：先删除，再创建
update：如果表不存在就创建，不一样就更新，一样就什么都不做。
create-drop：初始化时创建表，SessionFactory执行close()时删除表。
validate：验证表结构是否一致，如果不一致，就抛异常。
-->
<property name="hbm2ddl.auto">update</property>

<!--
设置默认的事务隔离级别：
隔离级别        对应的整数表示
READ UNCOMMITED 1
READ COMMITED   2
REPEATABLE READ 4
SERIALIZEABLE   8
-->
<property name="connection.isolation">4</property>

<!-- 使用二级缓存，默认是未打开的。 -->
<!-- 指定要使用的缓存的提供商，这也就打开了二级缓存
<property name="cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property>
<property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
-->
<!-- 开启使用查询缓存
<property name="cache.use_query_cache">true</property>
-->
<!-- 指定要使用二级缓存的实体类
<class-cache usage="read-write" class="cn.itcast.l_second_cache.Employee"/>
<class-cache usage="read-write" class="cn.itcast.l_second_cache.Department"/>
<collection-cache usage="read-write" collection="cn.itcast.l_second_cache.Department.employees"/>
-->

<!-- 导入映射文件 -->
<mapping resource="com/zll/entity/User.hbm.xml"/>
<mapping resource="com/zll/entity/Student.hbm.xml"/>

</session-factory>
</hibernate-configuration>

Struts.xml

<?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="person" namespace="/" extends="struts-default">
<!-- （测试使用）action的创建交给Spring来管理，这里的class 只需要填写spring里对应action对象的bean的id -->
<action name="userAction" class="userAction" />
</package>
</struts>

Spring.xml:

<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> 
<!-- （重要步骤）c3p0连接池配置 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql:///hibernate?characterEncoding=utf-8"></property>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
</bean>

<!-- （重要步骤）spring整合Hibernate配置，这里将Hibernate创建sessionFactory的方法交给Spring管理。 -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocations" value="classpath:config/hibernate.cfg.xml"></property>
</bean>

<!-- （重要步骤）配置Hibernate 事务 如果不开启，数据库是 read_only状态 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<!-- 开启事务注解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>

<!-- 配置Hibernate 的jdbc模板 -->
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<!-- 测试代码，通过导入文件方式，可以将多个模块分开配置 -->
<import resource="classpath:config/testTemple.xml"/>
</beans>

testTemple.xml（这个不重要，看看如何配置就行）

<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> 
<!-- 配置测试用的实体类 -->
<bean id="userAction" class="com.zll.action.UserAction" scope="prototype">
<property name="userService" ref="userService"></property>
</bean>

<bean id="userService" class="com.zll.service.UserService">
<property name="userDao" ref="userDaoImp"></property>
</bean>

<bean id="userDaoImp" class="com.zll.dao.UserDaoImp">
<property name="hibernateTemplate" ref="hibernateTemplate"></property>
</bean>

</beans>

最重要的：

web.xml

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
<display-name>Archetype Created Web Application</display-name>

<!-- Spring ContextLoaderListener 配置文件的设置，如果不配置 默认读取 WEB-INF下的applicationContext.xml -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/spring.xml</param-value>
</context-param>

<!-- （重要配置） 注册struts的 StrutsPrepareAndExecuteFilter 类，拦截访问，并根据访问路径进行分发 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>config</param-name>
<param-value>struts-default.xml,struts-plugin.xml,config/struts.xml</param-value>
</init-param>
</filter>
<!-- 拦截/* 的所有访问，都会交给 -->
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- （重要配置）Spring 启动代码，注册监听器，监听servlet启动, -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>

最后pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.zll</groupId>
<artifactId>sshTest</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>sshTest Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.1.4.RELEASE</spring.version>
<hibernate.version>4.3.8.Final</hibernate.version>
<struts2.version>2.3.20</struts2.version>
<jackson.version>2.5.0</jackson.version>
</properties>

<dependencies>

<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>

<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>provided</scope>
</dependency>

<!-- 关系型数据库整合时需配置 如hibernate jpa等 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>

<!-- hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>${hibernate.version}</version>
</dependency>

<!-- struts2 -->
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>${struts2.version}</version>

<exclusions>
<exclusion>
<!-- Hibernate已经还有该包的依赖 -->
<artifactId>javassist</artifactId>
<groupId>javassist</groupId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>${struts2.version}</version>
</dependency>

<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-convention-plugin</artifactId>
<version>${struts2.version}</version>
</dependency>

<!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>

<!-- mysql连接 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<!-- 数据源 c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5-pre8</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>mchange-commons-java</artifactId>
<version>0.2.12</version>
</dependency>

<!-- json -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.3</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>

<!-- aop -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.4</version>
</dependency>

<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

</dependencies>

<build>
<finalName>spring_struts2_Hibernate_demo</finalName>

<plugins>
<!-- Run the JUnit unit tests in an isolated classloader -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.4.2</version>
<configuration>
<skipTests>true</skipTests>
</configuration>

</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<webXml>src/main/webapp/WEB-INF/web.xml</webXml>
</configuration>
</plugin>

<!-- generate java doc -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
<configuration>
<javadocDirectory>target/javadoc</javadocDirectory>
<reportOutputDirectory>target/javadoc</reportOutputDirectory>
<charset>UTF-8</charset>
<encoding>UTF-8</encoding>
<docencoding>UTF-8</docencoding>
<show>private</show>
</configuration>
</plugin>

<!-- 部署至本机 -->
<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<version>1.0</version>
<configuration>
<container>
<containerId>tomcat6x</containerId>
<home>F:\apache-tomcat-7.0.27</home>
</container>
<configuration>
<type>existing</type>
<home>F:\apache-tomcat-7.0.27</home>
</configuration>
</configuration>
</plugin>
</plugins>

</build>
</project>

整合细节知识点(了解)：

Struts2 和 Spring整合：就是将action的创建交由Spring管理。配置文件中class只需要配置Spring中bean的id就可以。

<action name="userAction" class="SpringBeanId" />

Hibernate和Spring整合：

1、创建连接池的对象交由spring管理

2、Spring提供了SessionFactory的封装类LocalSessionFactory，配置该类，并将数据源配置给它。

3、配置Spring的HibernateTemplate，将SessionFactory配置给他。替代session完成数据操作。

4、spring 事务管理配置，替代Hibernate事务管理