（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：

 <!-- 引入外部spring配置文件 --> 2 <!-- <import resource="classpath:cn/itcast/test/conf/test-spring.xml"/>使用通配符 --> 3 <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。

 <include file="cn/itcast/test/conf/test-struts.xml"></include> 

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);
    }
    
}