SSH整合笔记

SSH:spring+struts+hibernate.

一:所需jar:

需要注意的是:

hibernate+spring需要Spring-orm-xxx.jar

struts+spring需要struts2-spring-plugin-2.3.24.jar

二:三个框架各自用处

spring:对各层的类进行初始化

struts:接收页面过来的请求,然后去后台找对应的业务类

hibernate:对数据进行操作管理

三:配置文件

在spring配置文件中需要配置

	<!-- SessionFactory -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
	</bean>
	<!-- dao层 -->
	<bean id="dao" class="cn.ssh.dao.UserDao">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	<!-- Service层 -->
	<bean id="service" class="cn.ssh.service.UserService">
		<property name="dao" ref="dao"></property>
	</bean>
	<!-- action层  -->
	<bean id="useraction" class="cn.ssh.action.UserAction" scope="prototype">
		<property name="service" ref="service"></property>
	</bean>

其中不仅需要给dao,service,action层配置,还需要将sessionFactory配置在这里,为了保证一个项目里只有一个sessionFactory,也不用程序员用代码创建sessionFactory这样繁琐.

当然,在dao实现类里必须得植入一个sessionFactory局部变量(get/set).

在struts配置文件中需要配置

 <package name="default" namespace="/" extends="struts-default">
	 	<action name="addUser" class="useraction" >
	 		<result name="success">/index.jsp</result>
	 		<result name="input">/MyJsp.jsp</result>
	 	</action>
	</package>

struts配置文件中没有需要添加的节点

在hibernate配置文件中需要配置

<hibernate-configuration>

	<session-factory>

		<!-- Database connection settings -->
		<property name="connection.driver_class">oracle.jdbc.OracleDriver</property>
		<property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
		<property name="connection.username">wuao</property>
		<property name="connection.password">123</property>

		<!-- JDBC connection pool (use the built-in) -->
		<!-- <property name="connection.pool_size">1</property> -->

		<!-- SQL dialect -->
		<property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>

		<!-- Enable Hibernate's automatic session context management -->
		<property name="current_session_context_class">thread</property>

		<!-- Disable the second-level cache -->
		<!-- <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> -->

		<!-- Echo all executed SQL to stdout -->
		<property name="show_sql">true</property>

		<!-- Drop and re-create the database schema on startup -->
		<!-- <property name="hbm2ddl.auto">update</property>	 -->
		<property name="hibernate.connection.autocommit">true</property>
        <property name="format_sql">true</property>
		<mapping class="cn.ssh.entity.User"/>
	</session-factory>

</hibernate-configuration>

hibernate配置文件中只加了一个自动提交的事物节点:<property name="hibernate.connection.autocommit">true</property>

四:各层调用

dao层调用entity

service层调用dao

action层调用service

dao层

service层

action层
五:ssh简单流程图