1、SSH的整合---->将Struts2整合到Spring中

1、Spring的配置文件

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- 导入资源文件 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 配置 C3P0 数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>

        <property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>
        <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
    </bean>

    <!-- 配置 SessionFactory -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
        <property name="mappingLocations" value="classpath:com/baowei/entity/*.hbm.xml"></property>
    </bean>

    <!-- 配置 Spring 的声明式事务 -->
    <!-- 1. 配置 hibernate 的事务管理器 -->
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <!-- 2. 配置事务属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true" />
            <tx:method name="lastNameIsValid" read-only="true" />
            <tx:method name="*" />
        </tx:attributes>
    </tx:advice>

    <!-- 3. 配置事务切入点, 再把事务属性和事务切入点关联起来 -->
    <aop:config>
        <aop:pointcut expression="execution(* com.baowei.service.*.*(..))"
            id="txPointcut" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut" />
    </aop:config>

</beans>

Spring的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="classRoomDao" class="com.baowei.dao.ClassRoomDao">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <bean id="studentDao" class="com.baowei.dao.StudentDao">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <bean id="classRoomService" class="com.baowei.service.ClassRoomService">
        <property name="classRoomDao" ref="classRoomDao"></property>
    </bean>

    <bean id="studentService" class="com.baowei.service.StudentService">
        <property name="studentDao" ref="studentDao"></property>
    </bean>

    <!-- <bean id="studentAction" class="com.baowei.action.StudentAction" scope="prototype">
        <property name="studentService" ref="studentService"></property>
    </bean> -->

    <!-- <bean id="employeeAction" class="com.atguigu.ssh.actions.EmployeeAction"
        scope="prototype">
        <property name="employeeService" ref="employeeService"></property>
        <property name="departmentService" ref="departmentService"></property>
    </bean> -->

</beans>

2、hibernate.cfg.xml的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <!-- 配置 hibernate 的基本属性 -->

        <!-- 方言 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

        <!-- 是否显示及格式化 SQL -->
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">true</property>

        <!-- 生成数据表的策略 -->
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 二级缓存相关 -->

    </session-factory>

</hibernate-configuration>

3、Struts2的配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <package name="default" namespace="/" extends="struts-default">

        <action name="display" class="com.baowei.action.StudentAction"
            method="listStudent">
            <result name="list">/index.jsp</result>
        </action>

    </package>

    <!-- Add packages here -->

</struts>

4、web.xml的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext*.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 配置 Struts2 的 Filter -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

5、关于ServicerProviderUtils的使用

package com.baowei.utils;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ServiceProvider {
    private static ApplicationContext context = null;
    static{
        context = new ClassPathXmlApplicationContext("applicationContext*.xml");
    }

    public static Object getService(String name){
        return context.getBean(name);
    }

    public static void main(String[] args) {
        System.out.println(ServiceProvider
                .getService("studentService"));
    }
}