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"));
}
}