一、三大框架架构
二、导包
hibernate
hibernate/lib/required:9个包:
hibernate/lib/jpa:规范包hibernate-entitymanager
数据库驱动:mysql-connector-javastruts2
struts-blank.war/WEB-INF/lib/*:13个包(有一个和上面重复了,删掉)
struts整合spring插件包:struts2-spring-plugin(这个包导入后,struts2在启动的时候就会寻找spring容器。找不到会抛异常)
spring
基本包4+2: core+beans+context+expression,logging+log4j
整合web: spring-web
整合aop: spring-aop/spring-aspect/aop联盟/aop-weaving
整合jdbc和事务:spring-jdbc/spring-tx/c3p0/spring-orm
Junit测试: spring-test
标签库
standard.jar
jstl-1.2.jar
三、单独配置spring容器
1.创建配置文件,导入四个约束:beans|context|aop|tx
<?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 web.xml
<!-- 让spring随web启动而创建的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置spring配置文件位置参数 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
四、单独配置struts2
1.struts2的主配置文件
<?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="cn.itcast.web.action.UserAction" method="{1}">
<result name="toHome" type="redirect">/index.htm</result>
</action>
</package>
</struts>
2.配置struts2核心过滤器到web.xml
<!-- 配置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>
五、spring和struts2整合
1.需要jar包:struts2-spring-plugin
2.配置常量:将action的创建交给spring容器
<?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>
<!-- #struts.objectFactory = spring 将action的创建交给spring容器
struts.objectFactory.spring.autoWire = name spring负责装配action的依赖属性-->
<constant name="struts.objectFactory" value="spring"></constant>
<package name="crm" namespace="/" extends="struts-default">
<action name="UserAction_*" class="cn.itcast.web.action.UserAction" method="{1}">
<result name="toHome" type="redirect">/index.htm</result>
</action>
</package>
</struts>
3.具体整合
整合方案一:class属性上仍然配置action的完整类名:cn.itcast.web.action.UserAction,struts2自己创建action,spring负责组装依赖属性
不推荐:最好由spring完整管理action的生命周期.spring中功能才应用到Action上.
整合方案二:class属性上填写spring中action对象的BeanName:userAction
完全由spring来管理action的生命周期,包括action的创建
注意:需要手动组装依赖属性
<!-- 注意:action对象作用范围一定是多例的,这才符合struts2架构 -->
<bean name="userAction" class="cn.itcast.web.action.UserAction" scope="prototype">
<property name="userService" ref="userService"></property>
</bean>
六、单独配置hibernate
1.导入实体类&orm元数据
2.配置主配置文件
七、spring整合Hibernate
1.整合原理:将sessionFactory对象交给spring容器管理
2.在spring中配置sessionFactory
配置方案一:仍然使用外部的hibernate.cfg.xml配置信息
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
</bean>
配置方案二:在spring配置中放置hibernate配置信息
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<!-- 配hibernate基本信息 -->
<property name="hibernateProperties">
<props>
<!-- 必选配置 -->
<prop key="hibernate.connection.driver_class" >com.mysql.jdbc.Driver</prop>
<prop key="hibernate.connection.url" >jdbc:mysql:///crm_32</prop>
<prop key="hibernate.connection.username" >root</prop>
<prop key="hibernate.connection.password" >root</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orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
<property name="mappingDirectoryLocations" value="classpath:cn/itcast/domain" >
</property>
</bean>
八、spring整合c3p0连接池
1.配置db.properties
jdbc.jdbcUrl=jdbc:mysql:///crm_32
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=root
2.引入连接池到spring中
<!-- 读取db.properties文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 配置c3p0连接池 -->
<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.将连接池注入给sessionFactory
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<!-- 将连接池注入到sessionFactory, hibernate会通过连接池获得连接 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 配hibernate基本信息 -->
<property name="hibernateProperties">
<props>
<!-- 必选配置 -->
<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orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
<property name="mappingDirectoryLocations" value="classpath:cn/itcast/domain" >
</property>
</bean>
九、spring整合hibernate环境操作数据库
1.Dao类创建:继承HibernateDaoSupport
public class UserDaoImpl extends HibernateDaoSupport implements UserDao
2.hibernate模板操作
方式一.execute
@Override
public User getByUserCode(final String usercode) {
//HQL
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;
}
});
}
方式二.findByCriteria
@Override
public User getByUserCode(final String usercode) {
//Criteria
DetachedCriteria dc = DetachedCriteria.forClass(User.class);
dc.add(Restrictions.eq("user_code", usercode));
List<User> list = (List<User>) getHibernateTemplate().findByCriteria(dc);
if(list != null && list.size()>0){
return list.get(0);
}else{
return null;
}
}
3.spring中配置dao
<!-- dao -->
<bean name="userDao" class="cn.itcast.dao.impl.UserDaoImpl">
<!-- 注入sessionFactory -->
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
十、spring的aop事务
1.准备: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>
2.1使用xml配置aop事务的方式
配置通知
<!-- 如果没有以下事务的通知+织入的配置,那么所有事务操作都默认只读 -->
<!-- 配置通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
<tx:attributes>
<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>
配置织入
<!-- 配置将通知织入目标对象
配置切点
配置切面 -->
<aop:config>
<aop:pointcut expression="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))" id="txPc"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
</aop:config>
2.2使用注解配置aop事务
注:上面的事务模板和通知、织入等配置都可以注释掉了
开启注解事务
<!-- 开启使用注解配置事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
service类中使用注解
@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)
public class UserServiceImpl implements UserService{
@Override
@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
public void saveUser(User u) {
ud.save(u);
}
十一、扩大session的作用范围
1.目的: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
2.配置filter
<!-- 扩大session的作用范围
注意:openSessionInView(也包括其他任何过滤器)一定要在struts的filter之前调用:因为struts的过滤器是不放行的
-->
<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>