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;

@Transactional
public 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;
	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
		try {
			ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
			personService = (PersonService) applicationContext.getBean("personService");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Test
	public void testSave() {
		personService.save(new Person("小张"));
	}

	@Test
	public void testUpdate() {
		Person person = personService.getPerson(1);
		person.setName("张三");
		personService.update(person);
	}

	@Test
	public void testDelete() {
		personService.delete(1);
	}

	@Test
	public void testGetPerson() {
		System.out.println(personService.getPerson(1).getName());
	}

	@Test
	public 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 {

	@Override
	public 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。