ssh项目整合(重点篇)

1.三大框架整合原理

 

2.导包(41)

1>hibernate包

hibernate/lib/required下的所有必须包:9个

数据库驱动包:1个

 

2>struts2包

struts2-blank\WEB-INF\lib所有必须包:13个

struts整合spring插件包:struts2-spring-plugin-2.3.24.jar(这个包导入后在struts2启动时就会寻找spring容器,找不到即有异常)1个

注意:javassist-3.18.1-GA.jar包与hibernate中的重复

 

3>spring包

基本:4+2

整合web包:1个

整合aop包:spring-aop|spring-aspect|aop联盟|aopweaving 4个

整合hibernate和事务:spring-jdbc|spring-tx|c3p0|spring-orm 4个

测试包:spring-test 1个

 

4>jstl标签库包

standard.jar、jstl.1.2jar  2个

 

3.单独配置spring容器

1>书写配置文件(导入约束:4)

<?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 ">

2>配置spring随项目启动

  <!-- 可以让spring容器随项目的启动而创建,随项目的关闭而销毁 -->
  <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 指定spring配置文件的位置 -->
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath:applicationContext.xml</param-value>
  </context-param>

4.单独配置struts2

1>配置struts2主配置文件(导入约束)

<?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="crm" namespace="/" extends="struts-default">
		<action name="UserAction_*" class="con.imwj.web.action.UserAction" method="{1}">
			<result name="success">/success.jsp</result>
		</action>
	</package>
</struts>

2>配置struts2核心过滤器到web.xml

  <!-- struts2的核心过滤器 -->
  <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>

5.struts与spring整合

1>配置常量

	<!-- struts.xml中:配置常量 -->
	<constant name="struts.objectFactory" value="spring"></constant>

2>整合:spring负责创建action以及组装

	<!-- application --><!-- action -->
	<bean name="userAction" class="com.imwj.web.action.UserAction">
		<property name="userService" ref="userService"></property>
	</bean>
	 <!-- struts.xmlclass属性上填写spring中action对象的BeanName完全由spring管理action生命周期,包括Action的创建
		 	注意:需要手动组装依赖属性  -->
	<package name="crm" namespace="/" extends="struts-default">
		<action name="UserAction_*" class="userAction" method="{1}">
			<result name="success">/success.jsp</result>
		</action>
	</package>

6.单独配置hibernate

1>导入实体类和orm元数据

2>配置主配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
	<session-factory>
	<!-- 数据库驱动 -->
	<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
	<!-- 数据库地址和名称 -->
	<property name="hibernate.connection.url">jdbc:mysql:///ssh_crm</property>
	<!-- 连接名 -->
	<property name="hibernate.connection.username">root</property>
	<!-- 连接密码 -->
	<property name="hibernate.connection.password">123456</property>
	<!-- 选择数据库引擎:默认通用的(最短):数据库方言 -->
	<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

	<!-- 在控制台显示sql语句 -->
	<property name="hibernate.show_sql">true</property>
	<!-- 按格式显示sql语句 -->
	<property name="hibernate.format_sql">true</property>
	<!-- 自动创建表:按何种方式 -->
	<property name="hibernate.hbm2ddl.auto">update</property>	
	<!-- 指定session与当前线程绑定 -->
	<property name="hibernate.current_session_context_class">thread</property>
	
	<!-- 映射表的路径 -->
	<mapping resource="com/imwj/domain/Customer.hbm.xml" />
	<mapping resource="com/imwj/domain/Linkman.hbm.xml" />
	<mapping resource="com/imwj/domain/User.hbm.xml" />
	</session-factory>
</hibernate-configuration>

7.spring整合hibernate

1>整合原理

将sessionFactory对象交给spring容器管理

 

2>spring中配置sessionFactory

	<!-- spring整合hibernate:在spring中放置配置信息 -->
	<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
		<!-- 配置hibernate的基本信息 -->
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.connection.url" >jdbc:mysql:///ssh_crm</prop>
				<prop key="hibernate.connection.username" >root</prop>
				<prop key="hibernate.connection.password" >123456</prop>
				<prop key="hibernate.dialect" >org.hibernate.dialect.MySQLDialect</prop>
				
				<!--  可选配置 -->
				<prop key="hibernate.show_sql" >true</prop>
				<prop key="hibernate.format_sql" >true</prop>
				<prop key="hibernate.hbm2ddl.auto" >update</prop>
			</props>
		</property>
		<!-- 引入orm元数据,指定所在包路径,spring自动读取 -->
		<property name="mappingDirectoryLocations" value="classpath:com/imwj/domain"></property>
	</bean>

8.spring整合c3p0连接池

1>配置db.properties

jdbc.jdbcUrl=jdbc:mysql:///ssh_crm
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=123456

2>引入到spring中

	<!-- 读取db.properties配置文件 -->
	<context:property-placeholder location="classpath:db.properties"/>
	<!-- 将连接池放入spring容器 -->
	<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
		<property name="driverClass" value="${jdbc.driverClass}" ></property>
		<property name="user" value="${jdbc.user}" ></property>
		<property name="password" value="${jdbc.password}" ></property>
	</bean>

3>连接池注入给sessionFactory

		<!-- 将c3p0连接池放入sessionfactory,hibernate会通过连接池获取到连接 -->
		<property name="dataSource" ref="dataSource" ></property>

9.spring整合hibernate环境操作数据库

1>Dao继承HibernateDaoSupprot

public class UserDaoImpl extends HibernateDaoSupport implements UserDao{

2>hibernate模板操作

	public User getUserByCode(final String userCode) {
		return getHibernateTemplate().execute(new HibernateCallback<User>() {
			@Override
			public User doInHibernate(Session session) throws HibernateException {
					String hql = "from User where user_code = ? ";
					Query query = session.createQuery(hql);
					query.setParameter(0, userCode);
					User user = (User) query.uniqueResult();
				return user;
			}
		});
	}

3>spring中配置dao

	<!-- dao -->
	<bean name="userDao" class="com.imwj.dao.impl.UserDaoImpl">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>

10.spring中的aop事务

1>核心事务管理器

	<!-- 核心事务管理器 -->
	<bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>

2>配置通知

<!-- 配置事务通知 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager" >
		<tx:attributes>
			<!-- 以方法为单位,指定方法应用什么事务属性,name:方法名(*通配符,只要是以saver开头的方法...),isolation:隔离级别
				propagation:传播行为,read-only:是否只读-->
			<tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
			<tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
			<tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
		</tx:attributes>
	</tx:advice>

3>配置织入

	<!-- 配置织入 -->
	<aop:config  >
		<!-- 配置切点表达式 -->
		<aop:pointcut expression="execution(* com.imwj.service.*ServiceImpl.*(..))" id="txPc"/>
		<!-- 配置切面 : 通知+切点,advice-ref:通知的名称,pointcut-ref:切点的名称 -->
		<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
	</aop:config>

11.扩大session范围(解决懒加载no-session问题)

为了避免使用懒加载时出现no-session问题.需要扩大session的作用范围

web.xml中配置filter

  <!-- 扩大session作用范围
  	注意: 任何filter一定要在struts的filter之前调用 -->
  <filter>
  	<filter-name>openSessionInView</filter-name>
  	<filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
  </filter>
  <filter-mapping>
  	<filter-name>openSessionInView</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>

12.源码

github地址https://github.com/weixiaojian/ssh

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转载自blog.csdn.net/langao_q/article/details/82658548