（三）整合SSH测试项目

整合struts 和 spring

预期：如果可以在action中能够正确调用service里面的方法执行并返回到一个页面中；那么我们认定struts和spring的整合是成功的。

编写JUnit测试类，测试spring加载是否正确：

 public class TestMerge {

     ClassPathXmlApplicationContext ctx;

     @Before

     public void loadCtx() {

          ctx= new ClassPathXmlApplicationContext("applicationContext.xml");

     }

     @Test

     public void testSpring() {

         TestService ts = (TestService)ctx.getBean("testService");

         ts.say();

     }

编写 TestService 接口和实现类 TestServiceImpl

 package cn.itcast.test.service;

 public interface TestService {

     public void say();

 }

 package cn.itcast.test.service.impl;

 import org.springframework.stereotype.Service;

 import cn.itcast.test.service.TestService;

 @Service("testService")

 public class TestServiceImpl implements TestService {

     @Override

     public void say() {

         System.out.println("service say haha ");

     }

 }

在applicationContext.xml中添加bean扫描配置信息；这边使用导入配置文件的方式配置。

①首先在cn.itcast.test.conf中建立test-spring.xml，里面内容：

 <?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:p="http://www.springframework.org/schema/p"

     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-3.0.xsd

     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

     <!-- 扫描service -->

     <context:component-scan base-package="cn.itcast.test.service.impl"></context:component-scan>

 </beans>

②将test-spring.xml导入到applicationContext.xml中如下：

<import resource="classpath:cn/itcast/*/conf/*-spring.xml"/>

编写TestAction类

 public class TestAction extends ActionSupport {

     @Resource

     TestService testService; 

     public String execute(){

         testService.say();

         return SUCCESS;

     }

 }

在test的conf文件夹下新建test-struts.xml中配置TestAction ：

 <?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="test-action" namespace="/" extends="struts-default">

         <action name="test_*" class="cn.itcast.test.action.TestAction" method="{1}">

             <result name="success">/WEB-INF/jsp/test/test.jsp</result>

         </action>

     </package>

 </struts>

将test-struts.xml导入到struts.xml文件中。

在webRoot目录下新建test/test.jsp

在浏览器中输入：http://localhost:8080/itcastTax/test.action 查看后台是否能输入service中的打印信息。

整合hibernate 和 spring

在applicationContext.xml中配置如下原本在hibernate.cfg.xml中需要配置的信息，在spring中配置后hibernate.cfg.xml 可删除。

1、配置c3p0数据库连接源：

     <!-- 导入外部的properties配置文件 -->

     <context:property-placeholder location="classpath:db.properties" />

     <!-- 配置c3p0数据源 -->

     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">

         <property name="jdbcUrl" value="${jdbcUrl}"></property>

         <property name="driverClass" value="${driverClass}"></property>

         <property name="user" value="${user}"></property>

         <property name="password" value="${password}"></property>

         <!--初始化时获取三个连接，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->

         <property name="initialPoolSize" value="${initialPoolSize}"></property>

         <!--连接池中保留的最小连接数。Default: 3 -->

         <property name="minPoolSize" value="3"></property>

         <!--连接池中保留的最大连接数。Default: 15 -->

         <property name="maxPoolSize" value="${maxPoolSize}"></property>

         <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->

         <property name="acquireIncrement" value="3"></property>

         <!--最大空闲时间，1800秒内未使用则连接被丢弃，若为0则永不丢弃。Default: 0 -->

         <property name="maxIdleTime" value="1800"></property>

     </bean>

2、db.properties

 jdbcUrl=jdbc:mysql://localhost:3306/itcastTax_0406?useUnicode=true&characterEncoding=utf8

 driverClass=com.mysql.jdbc.Driver

 user=root

 password=123456

 initialPoolSize=10

 maxPoolSize=30

3、配置sessionFactory，并将dataSource指向c3p0创建的dataSource：

     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

         <property name="dataSource" ref="dataSource"></property>

         <property name="hibernateProperties">

             <props>

                 <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>

                 <prop key="hibernate.show_sql">true</prop>

                 <prop key="hibernate.hbm2ddl.auto">update</prop>

                 <prop key="javax.persistence.validation.mode">none</prop>

             </props>

         </property>

         <property name="mappingLocations">

             <list>

                 <value>classpath:cn/itcast/nsfw/*/entity/*.hbm.xml</value>

                 <value>classpath:cn/itcast/test/entity/*.hbm.xml</value>

             </list>

         </property>

     </bean>

编写实体类Person和对应的映射文件Person.hbm.xml：

 public class Person implements Serializable {

     private String id;

     private String name;

     public Person() {

     }

     public Person(String name) {

         super();

         this.name = name;

     }

     public Person(String id, String name) {

         this.id = id;

         this.name = name;

     }

     public String getId() {

         return id;

     }

     public void setId(String id) {

         this.id = id;

     }

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

 }

映射文件的头部信息：

 <?xml version="1.0" encoding="utf-8"?>

 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

 <hibernate-mapping>

     <class name="cn.itcast.test.entity.Person" table="person">

         <id name="id" type="java.lang.String">

             <column name="id" length="32" />

             <generator class="uuid.hex" />

         </id>

         <property name="name" type="java.lang.String">

             <column name="name" length="20" not-null="true" />

         </property>

     </class>

 </hibernate-mapping>

编写完实体映射文件后，用JUnit测试hibernate和spring的整合，在测试用例中启动spring容器的时候将扫描Person类根据其创建数据库表，并在测试时将向表插入一条数据。

测试hibernate，添加一个人员

     @Test

     public void testHibernate() {

         SessionFactory sf = (SessionFactory) ctx.getBean("sessionFactory");

         Session session = sf.openSession();

         Transaction transaction = session.beginTransaction();

         session.save(new Person("人员1"));

         transaction.commit();

         session.close();

     }

配置spring事务管理

 <!-- 事务管理 -->

     <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">

         <property name="sessionFactory" ref="sessionFactory"></property>

     </bean>

     <!-- 事务通知 -->

     <tx:advice id="txAdvice" transaction-manager="txManager">

         <tx:attributes>

             <tx:method name="find*" read-only="true"/>

             <tx:method name="get*" read-only="true"/>

             <tx:method name="list*" read-only="true"/>

             <tx:method name="*" rollback-for="Throwable"/>

         </tx:attributes>

     </tx:advice>

     <!-- aop配置被事务控制的类 -->

     <aop:config>

         <!-- <aop:pointcut id="serviceOperation" expression="bean(*Service)"/> -->

         <aop:pointcut id="serviceOperation" expression="execution(* cn.itcast..service.impl.*.*(..))"/>

         <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation"/>

     </aop:config>

【注意：上面的pointcut expression 表示拦截以Service结尾的bean，或者可写成

execution(* cn.itcast..service.impl.*.*(..))】

完善 TestService接口和TestServiceImpl；利用service中的操作来验证上面配置的事务管理是否生效。

测试方法

Dao中

 public class TestDaoImpl extends HibernateDaoSupport implements TestDao {

     @Override

     public void save(Person person) {

         getHibernateTemplate().save(person);

     }

     @Override

     public Person findPerson(Serializable id) {

         return getHibernateTemplate().get(Person.class,id);

     }

 }

Service中

 @Service("testService")

 public class TestServiceImpl implements TestService {

     @Resource

     TestDao testDao;

     @Override

     public void say() {

         System.out.println("service say haha ");

     }

     @Override

     public void save(Person person) {

         testDao.save(person);

         int i= 1/0;

     }

     @Override

     public Person findPerson(Serializable id) {

         save(new Person("test"));

         return testDao.findPerson(id);

     }

 }