整合SSH框架最基本的例子

ssh框架整合

一.思路
1.导包
struts2:  appsstruts2-blankWEB-INFlib所有包
			   struts2-spring-plugin-2.3.28.jar	
hibernate: lib
equired所有包
               libjpahibernate-jpa-2.0-api-1.0.0.Final(持久化规范,接口)
       		    hibernate3.jar    
       		    slf4j-api.jar
       		    slf4j-log4j12.jar 
 spring:  4+2个:libs目录 beans|context|core|expression|
                  commons-logging|log4j
             aop包4个：libs目录 spring-aop|spring-aspect  
                    aopalliance(联盟包)|aspectj.weaver.jar(织入包)
             jdbc+事务:spring-jdbc|spring-tx|spring-orm|c3p0
             
             web包:spring-web
             数据库驱动包：         mysql-connector-java.jar    
注：总共目前先用的包是38个包
2.创建配置文件
   struts 
   hibernate 
   spring 
3.整合hibernate 
      三个重要的对象
  1)HibernateTemplate ，操作我们po类（可以配置bean也可以继承HibernateDaoSupport）
  2)LocalSessionFactoryBean:创建sessionFactory
  3)HibernateTransactionManager:hibernate管理事务
李老师讲了两种方法，第一种是不用c3po数据源，另外一种使用c3p0数据源。
二   整合（c3p0数据源）
2.0配置web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>myssh_2</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <!-- spring的监听 用于启动applicationContext.xml -->
  <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:applicationContext2.xml</param-value>
  </context-param>
  <listener> 
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- struts2过滤器要放在最下面 -->
  <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>
</web-app>
2.1 配置struts.xml
<?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>
    <constant name="struts.devMode" value="true"></constant>
    <!-- 把Action实列交由spring来管理,这个常量必须配置 -->
    <constant name="struts.objectFactory" value="spring"></constant> 
    <package name="" namespace="/" extends="struts-default">
     <!-- 把Action创建交于spring容器去创建，class：名字对应的是applicationContext.中，要配置的    Action的bean的名字 -->
    <action name="userAction_*" class="userAction" method="{1}">
    <result name="success" type="redirect">/success.jsp</result>
    </action>
    </package> 
    </struts>
2.2 hibernate.cfg.xml和User.hbm.xml
说明：此时我们是用Spring去整合hibernate,这里不用配置
配置User.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="com.icss.pojo">
<class name="User" table="user">
<id name="uid">
<generator class="native"></generator>
</id>
<property name="name"></property>
<property name="pwd"></property>
</class>
</hibernate-mapping>
2.3 applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://www.springframework.org/schema/beans" 
	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-4.2.xsd 
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd 
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">
	<!-- 是要引用外部properties文件来使用 c3p0连接池 -->
	<!-- 0.1读取properties文件 -->
	<context:property-placeholder  location="classpath:db.properties"/>
	<!-- 0.2配置c3po -->
	<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
	</bean>
    <!-- 1.整合hibernate-->
        创建sessionFactory
	<bean name="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
	<!-- 连接数据源 -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- spring 代替 hibernate.cfg.xml文件 -->
		<property name="hibernateProperties">
			<props>
				<!-- 切记key要写全路径 hibernate. xxx-->
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
				<prop key="hibernate.autoReconnect">true</prop>
				<!-- 建议 不加 -->
				<!-- <prop key="hibernate.current_session_context_class">thread</prop> -->
				<prop key="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</prop>数据源提供商
				
			</props>
		</property>
		<!-- mapping 映射文件引入方式有两种 -->
		<!-- 1单个文件引入 -->
		<property name="mappingResources" value="com/icss/pojo/User.hbm.xml"></property>
		<!-- 2 全部引入 -->
		<!-- <property name="mappingDirectoryLocations" value="classpath:cn/icss/pojo"></property> -->
	</bean>
	<!-- 3配置dao -->
	<bean name="userDao" class="com.icss.dao.impl.UserDaoImpl2">
	<property name="sessionFactory"  ref="sessionFactory"></property>
	</bean>
	<!-- 4配置service -->
	<bean name="userService" class="com.icss.service.impl.UserServiceImpl">
	<property name="userDao" ref="userDao"></property>
	</bean>
	<!-- 5配置action -->
	<bean name="userAction" class="cn.icss.action.UserAction">
	<property name="userService" ref="userService"></property>
	</bean>
hibernate管理事务
    <!--6配置事物分为三步走  -->
    	<!-- 6.1核心事物管理器 -->
    	<bean name="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    	<property name="sessionFactory" ref="sessionFactory"></property>
    	</bean>
    	<!-- 6.2配置通知 -->
       <tx:advice id="txAdvice" transaction-manager="transactionManager">
       <tx:attributes>
       		<tx:method name="save*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
			<tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
			<tx:method name="delete*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
			<tx:method name="find*"  read-only="true"/>
			<tx:method name="select*" read-only="true"/>
       </tx:attributes>
       </tx:advice>
       <!-- 6.3切面 -->  
       <aop:config>
        <aop:pointcut expression="execution(* com.icss.service..*.*(..))" id="pc"/>
		<aop:advisor advice-ref="txAdvice" pointcut-ref="pc"/>
       </aop:config>
</beans>
2.4 db.properties文件
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:///test
jdbc.user=root
jdbc.password=123456
2.5. UserDaoImpl
public class UserDaoImpl2 extends HibernateDaoSupport  implements UserDao {
	@Override
	public void save(User u) {
		
		getHibernateTemplate().save(u);
	}
	@Override
	public void update(User u) {
		getHibernateTemplate().update(u);
	}
	@Override
	public void delete(User u) {
		getHibernateTemplate().delete(u);
	}
	@Override
	public User findById(Integer uid) {
		User user = getHibernateTemplate().get(User.class, uid);
		return user;
	}
	@Override
	public List<User> findAll() {
		String hql="from User";
		List<User> list = (List<User>) getHibernateTemplate().find(hql);
		return list;
	}

}
2.6 UserServiceImpl
public class UserServiceImpl implements UserService {

	private UserDao userDao;  //set方式注入	
	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}
	@Override
	public void save(User u) {
		userDao.save(u);
	}
	@Override
	public void update(User u) {
		userDao.update(u);
	}
	@Override
	public void delete(User u) {
		userDao.delete(u);
	}
	@Override
	public User findById(Integer uid) {
		return userDao.findById(uid);
	}
	@Override
	public List<User> findAll() {
		return userDao.findAll();
	}
}
2.6 UserAction
public class UserAction extends ActionSupport implements ModelDriven<User> {

	private UserService userService;
	public void setUserService(UserService userService) {
		this.userService = userService;
	}
	//声明User对象(一定实例化)
	private User user = new User();
	//实现用户的添加功能
	public String add() throws Exception {
		this.userService.save(user);
		return "success";
	}
	@Override
	public User getModel() {
		return user;
	}
}
2.6 Pojo(User.java)
public class User {
	private Integer uid;
	private String name;
	private String pwd;
	public Integer getUid() {
		return uid;
	}
	public void setUid(Integer uid) {
		this.uid = uid;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPwd() {
		return pwd;
	}
	public void setPwd(String pwd) {
		this.pwd = pwd;
	}
	@Override
	public String toString() {
		return "User [uid=" + uid + ", name=" + name + ", pwd=" + pwd + "]";
	}
}