三大框架架构(整合原理)
导包(41个)
hibernate
hibernate/lib/required
antlr-2.7.7.jar dom4j-1.6.1.jar geronimo-jta_1.1_spec-1.1.1.jar hibernate-commons-annotations-5.0.1.Final.jar hibernate-core-5.0.7.Final.jar hibernate-jpa-2.1-api-1.0.0.Final.jar jandex-2.0.0.Final.jar javassist-3.18.1-GA.jar jboss-logging-3.3.0.Final.jar
hibernate/lib/jpa | java persist api java的持久化规范(接口)
数据库驱动
mysql-connector-java-5.1.7-bin.jar
struts2
struts-blank.war/WEB-INF/lib/*
asm-3.3.jar asm-commons-3.3.jar asm-tree-3.3.jar commons-fileupload-1.3.1.jar commons-io-2.2.jar commons-lang3-3.2.jar freemarker-2.3.22.jar log4j-api-2.2.jar log4j-core-2.2.jar ognl-3.0.6.jar struts2-core-2.3.24.jar xwork-core-2.3.24.jar
注意:javassist-3.18.1-GA.jar包与hibernate中的重复
struts2-spring-plugin-2.3.24.jar
注意:这个包一旦导入,那么struts2在启动时就会寻找spring容器.找不到将会抛出异常
spring
基本:4+2
core|beans|context|expression|logging|log4j
spring-beans-4.2.4.RELEASE.jar spring-context-4.2.4.RELEASE.jar spring-core-4.2.4.RELEASE.jar spring-expression-4.2.4.RELEASE.jar com.springsource.org.apache.commons.logging-1.1.1.jar com.springsource.org.apache.log4j-1.2.15.jar
整合web:web包
spring-web
spring-web-4.2.4.RELEASE.jar
整合aop:4个
spring-aop|spring-aspect|aop联盟|aopweaving
spring-aop-4.2.4.RELEASE.jar spring-aspects-4.2.4.RELEASE.jar com.springsource.org.aopalliance-1.0.0.jar com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
整合Hibernate和事务:4个
spring-jdbc|spring-tx|c3p0|spring-orm
spring-jdbc-4.2.4.RELEASE.jar spring-tx-4.2.4.RELEASE.jar com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar spring-orm-4.2.4.RELEASE.jar
整junit4测试:test包
spring-test-4.2.4.RELEASE.jar
标签库（IDE提示用的）
standard.jar jstl-1.2.jar
单独配置spring容器
创建配置文件,并导入约束(4个)
beans|context|aop|tx
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>
单独配置struts2
配置struts2主配置文件
配置struts2核心过滤器到web.xml
<!-- struts2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>
struts2与spring整合
导包struts2-spring-plugin-2.3.24.jar(已经导入)
配置常量
WebContentWEB-INFlibstruts2-core-2.3.24.jar中
/org/apache/struts2/default.properties
### if specified, the default object factory can be overridden here ### Note: short-hand notation is supported in some cases, such as "spring" ### Alternatively, you can provide a com.opensymphony.xwork2.ObjectFactory subclass name here # struts.objectFactory = spring ### specifies the autoWiring logic when using the SpringObjectFactory. ### valid values are: name, type, auto, and constructor (name is the default) struts.objectFactory.spring.autoWire = name
<!-- # struts.objectFactory = spring 将action的创建交给spring容器 struts.objectFactory.spring.autoWire = name spring负责装配Action依赖属性 --> <constant name="struts.objectFactory" value="spring"></constant>
整合方案1:struts2自己创建action,spring负责组装依赖属性
不推荐理由: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2:spring负责创建action以及组装.
applicationContext.xml
<!-- action --> <!-- 注意:Action对象作用范围一定是多例的.这样才符合struts2架构 --> <bean name="userAction" class="cn.itcast.web.action.UserAction" scope="prototype" > <property name="userService" ref="userService" ></property> </bean>
struts.xml
<package name="crm" namespace="/" extends="struts-default" > <global-exception-mappings> <exception-mapping result="error" exception="java.lang.RuntimeException"></exception-mapping> </global-exception-mappings> <!-- 整合方案1:class属性上仍然配置action的完整类名 struts2仍然创建action,由spring负责组装Action中的依赖属性 --> <!-- 整合方案2:class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 --> <action name="UserAction_*" class="userAction" method="{1}" > <result name="toHome" type="redirect" >/index.htm</result> <result name="error" >/login.jsp</result> </action> </package>
单独配置hibernate
导入实体类&orm元数据
配置主配置文件
<!-- 数据库驱动 --> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 数据库url --> <property name="hibernate.connection.url">jdbc:mysql:///crm_32</property> <!-- 数据库连接用户名 --> <property name="hibernate.connection.username">root</property> <!-- 数据库连接密码 --> <property name="hibernate.connection.password">1234</property> <!-- 数据库方言 注意: MYSQL在选择方言时,请选择最短的方言. --> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- 将hibernate生成的sql语句打印到控制台 --> <property name="hibernate.show_sql">true</property> <!-- 将hibernate生成的sql语句格式化(语法缩进) --> <property name="hibernate.format_sql">true</property> <!-- 自动导出表结构. 自动建表 --> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 引入实体配置文件 --> <mapping resource="cn/itcast/domain/Customer.hbm.xml" /> <mapping resource="cn/itcast/domain/LinkMan.hbm.xml" /> <mapping resource="cn/itcast/domain/User.hbm.xml" />
spring整合hibernate
整合原理
将sessionFactory对象交给spring容器管理
在spring中配置sessionFactory
两种配置方案:
<!-- 将SessionFactory配置到spring容器中 --> <!-- 加载配置方案1: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> --> <!-- 加载配置方案2:在spring配置中放置hibernate配置信息 --> <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> <!-- 配置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" >1234</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>
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>
Hibernate中的数据库配置就可以注掉了
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>
spring整合hibernate环境操作数据库
Dao类创建:继承HibernateDaoSupport
hibernate模板的操作
import java.util.List; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.criterion.DetachedCriteria; import org.hibernate.criterion.Restrictions; import org.springframework.orm.hibernate5.HibernateCallback; import org.springframework.orm.hibernate5.HibernateTemplate; import org.springframework.orm.hibernate5.support.HibernateDaoSupport; import cn.itcast.dao.UserDao; import cn.itcast.domain.User; //HibernateDaoSupport 为dao注入sessionFactory public class UserDaoImpl extends HibernateDaoSupport implements UserDao { @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; } }); //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; }*/ } @Override public void save(User u) { getHibernateTemplate().save(u); } }
spring中配置dao
<bean name="userDao" class="cn.itcast.dao.impl.UserDaoImpl" > <!-- 注入sessionFactory --> <property name="sessionFactory" ref="sessionFactory" ></property> </bean>
spring的aop事务
准备工作
<!-- 核心事务管理器 --> <bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager" > <property name="sessionFactory" ref="sessionFactory" ></property> </bean>
xml配置aop事务
配置通知，配置织入
<!-- 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> -->
注解配置aop事务
开启注解事务
<!-- 开启注解事务 --> <tx:annotation-driven transaction-manager="transactionManager" />
service中注入dao
<bean name="userService" class="cn.itcast.service.impl.UserServiceImpl" > <property name="ud" ref="userDao" ></property> </bean>
Service类中使用注解
import org.springframework.transaction.annotation.Isolation; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; import cn.itcast.dao.UserDao; import cn.itcast.domain.User; import cn.itcast.service.UserService; @Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true) public class UserServiceImpl implements UserService{ private UserDao ud; @Override public User getUserByCodePassword(User u) { //1 根据登陆名称查询登陆用户 User existU = ud.getByUserCode(u.getUser_code()); //2 判断用户是否存在.不存在=>抛出异常,提示用户名不存在 if(existU==null){ throw new RuntimeException("用户名不存在!"); } //3 判断用户密码是否正确=>不正确=>抛出异常,提示密码错误 if(!existU.getUser_password().equals(u.getUser_password())){ throw new RuntimeException("密码错误!"); } //4 返回查询到的用户对象 return existU; } @Override @Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false) public void saveUser(User u) { ud.save(u); } public void setUd(UserDao ud) { this.ud = ud; } }
扩大session作用范围
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
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>
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