使用SSH搭建一个实例

1..首先引入相关包:

  Spring相关包+Struts相关包+Hibernate相关包

2.配置好Spring的beanx.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-3.0.xsd         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-3.0.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" >                <context:annotation-config></context:annotation-config>        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">           <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>           <property name="url" value="jdbc:mysql://localhost:3306/itcast?useUnicode=true&characterEncoding=UTF-8"></property>           <property name="username" value="root"></property>           <property name="password" value="123"></property>           <!-- 连接池启东时的初始值 -->           <property name="initialSize" value="1"></property>           <!-- 连接池的最大值 -->           <property name="maxActive" value="500"></property>           <!-- 最大空闲值 -->           <property name="maxIdle" value="2"></property>           <!-- 最小空闲值 -->           <property name="minIdle" value="1"></property>        </bean>        <!-- 配置Hibernate -->        <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">            <property name="dataSource" ref="dataSource"></property>            <property name="mappingResources">               <list>                 <value>cn/itcast/bean/Person.hbm.xml</value>               </list>            </property>           <property name="hibernateProperties">               <value>                  hibernate.dialect=org.hibernate.dialect.MySQL5Dialect                  hibernate.hbm2ddl.auto=update                  hibernate.show_sql=false                  hibernate.format_sql=false                  <!-- 解决问题是加入了二级缓存的配置 -->                  hibernate.cache.use_second_level_cache=true                  hibernate.cache.use_query_cache=false                  hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider               </value>            </property>        </bean>                <!-- 事务管理器 -->        <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">            <property name="sessionFactory" ref="sessionFactory"></property>        </bean>        <!-- 注释驱动 -->        <tx:annotation-driven transaction-manager="txManager"/>        <bean id="personService" class="cn.itcast.service.impl.PersonServiceBean"/></beans><!-- 必须联网才能够读取文件 -->

3.cn.itcast.bean包下 的Person类

package cn.itcast.bean;public class Person {private Integer id;private String name;public Person(){}public Person(String name) {this.name = name;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

4.编写与Person类与数据库itcast中表person相对应的映射

Person.hbm.xml:

<?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 package="cn.itcast.bean">  <class name="Person" table="person">      <cache usage="read-write" region="cn.itcast.bean.Person"/>      <id name="id">         <generator class="native"></generator>      </id>      <property name="name" length="10" not-null="true"></property>  </class></hibernate-mapping>

5.cn.itcast.service下的接口PersonService:

package cn.itcast.service;import java.util.List;import cn.itcast.bean.Person;public interface PersonService {public void save(Person person);public void update(Person person);public void delete(Integer personid);public Person getPerson(Integer personid);public List<Person> getPersons();}

6.cn.itcast.PersonService.impl下的PersonServiceBean:(执行类)

package cn.itcast.service.impl;import java.util.List;import javax.annotation.Resource;import org.hibernate.SessionFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.transaction.annotation.Propagation;import org.springframework.transaction.annotation.Transactional;import cn.itcast.bean.Person;import cn.itcast.service.PersonService;@Transactionalpublic class PersonServiceBean implements PersonService {@Resource private SessionFactory sessionFactory;public void save(Person person){sessionFactory.getCurrentSession().persist(person);}public void update(Person person){sessionFactory.getCurrentSession().merge(person);}public void delete(Integer personid){sessionFactory.getCurrentSession().delete(sessionFactory.getCurrentSession().load(Person.class, personid));}@Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)public Person getPerson(Integer personid){return (Person)sessionFactory.getCurrentSession().get(Person.class, personid);}@Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)@SuppressWarnings("unchecked")public List<Person> getPersons(){return sessionFactory.getCurrentSession().createQuery("from Person").list();}}

7.至此，Model已经完成，编写测试类：

junit.test包写的PersonServiceTest类:

package junit.test;import static org.junit.Assert.fail;import org.junit.BeforeClass;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import cn.itcast.bean.Person;import cn.itcast.service.PersonService;public class PersonServiceTest {private static PersonService personService;@BeforeClasspublic static void setUpBeforeClass() throws Exception {try {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");personService = (PersonService) applicationContext.getBean("personService");} catch (Exception e) {e.printStackTrace();}}@Testpublic void testSave() {personService.save(new Person("小张"));}@Testpublic void testUpdate() {Person person = personService.getPerson(1);person.setName("张三");personService.update(person);}@Testpublic void testDelete() {personService.delete(1);}@Testpublic void testGetPerson() {System.out.println(personService.getPerson(1).getName());}@Testpublic void testGetPersons() {for(Person person:personService.getPersons()){System.out.println(person.getName());}}}

8.配置struts-config.xml:(放在WEB-INF下)

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts-config PUBLIC          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"          "http://struts.apache.org/dtds/struts-config_1_3.dtd"><struts-config>    <action-mappings>         <action path="/person/list" type="cn.itcast.web.action.PersonAction"         validate="false">            <forward name="list" path="/WEB-INF/page/personlist.jsp"></forward>         </action>    </action-mappings></struts-config>

10.编写Action:(cn.itcast.web.action)

PersonAction类:

package cn.itcast.web.action;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.springframework.web.context.WebApplicationContext;import org.springframework.web.context.support.WebApplicationContextUtils;import cn.itcast.service.PersonService;public class PersonAction extends Action {@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(this.getServlet().getServletContext());PersonService personService = (PersonService) ctx.getBean("personService");request.setAttribute("persons", personService.getPersons());return mapping.findForward("list");}}

11.配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">    <context-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:beans.xml</param-value>  </context-param>  <!-- 对Spring容器进行实例化 -->  <listener>      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>    <servlet>       <servlet-name>struts</servlet-name>       <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>       <init-param>           <param-name>config</param-name>           <param-value>/WEB-INF/struts-config.xml</param-value>       </init-param>       <load-on-startup>0</load-on-startup>  </servlet>  <servlet-mapping>       <servlet-name>struts</servlet-name>       <url-pattern>*.do</url-pattern>  </servlet-mapping>      <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

12.编写好struts完成了MVC中的C模块

编写V：

在WEB-INF/page/personlist.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>        <title>人员列表</title>    <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page">  </head>    <body>   <c:forEach items="${persons }" var="person">      ID=${person.id },Name=${person.name }<br>   </c:forEach>  </body></html>

13.启动服务器,输入http://localhost:8080/SSH/person/list.do运行即可。