SSH 框架整合（maven版本 xml配置方式）

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

<!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