SSH（三）
在Spring中引用属性文件：
优点：
1.防止随意更改jdbc的连接
2.给不懂代码的人使用
步骤：
1.数据库连接信息写在属性文件中
范例：#jdbc.properties
jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost/db
jdbc.username = root
jdbc.password = root
2.采用PropertyPlaceholderConfigurer可以引入属性文件，在Spring配置文件中采用诸如${jdbc.url}的方式引用属性值
3.PropertyPlaceholderConfigurer的配置用到了List类型属性
Spring自动装配：
1.定义：Spring可以根据属性类型、名称等自动进行注入
2.使用方法：设置<bean>元素的autowire属性
a.autowire属性取值：
取值 说明
no 默认值。Spring 默认不进行自动装配，必须显式指定依赖对象
byName 根据属性名自动装配。Spring 自动查找与属性名相同的id，如果找到，则自动注入，否则什么都不做
byType 根据属性的类型自动装配。Spring 自动查找与属性类型相同的Bean，如果刚好找到★唯一★的那个，则自动注入；如果找到多个与属性类型相同的Bean，则抛出异常；如果没找 到，就什么也不做
constructor 和byType 类似，不过它针对构造方法。如果 Spring 找到一个Bean和构造方法的参数类型相匹配，则通过构造注入该依赖对象；如果找不到，将抛出异常
b.可以为<beans>元素设置default-autowire属性，影响全局
c.<bean>节点上autowire的设置可以覆盖全局设置
3.一般情况下，使用byName的方式更合适。Spring3推荐使用带参构造或者使用在setXxx方法上使用@Required注解
4.注意：自动装配使得配置文件可以非常简洁，但同时也造成组件之间的依赖关系不明确，容易引发一些潜在的错误，在实际项目中要谨慎使用
拆分配置文件 -- 拆分策略
1.公用配置+每个系统模块一个单独配置文件（包含dao、service、action）
2.公用配置+DAO Bean配置+业务逻辑Bean配置+Action Bean配置
3.两种策略各有特色，适用于不同场合
方法：
a.配制Spring集成时：
1)配制ContextLoadListener的contextConfigLocation属性
2)配置多个配置文件用逗号隔开
3)使用通配符
b.使用<import resource="xxx.xml"/>方式
使用注解实现IoC：
1.注解方式将Bean的定义信息和Bean实现类结合在一起
2.Spring提供的注解:
@Component
@Repository ：用于标注DAO类
@Service ：用于标注业务类
@Controller ：用于标注控制器类
范例：
@Repository("userDao")
public class UserDaoImpl implements UserDao {
…
}
等效:与在XML配置文件中编写
<bean id="userDao" class="com.xuetang9.dao.impl.UserDaoImpl" />
3.使用@Autowired注解实现Bean的自动装配
a.默认按类型匹配
b.可以使用@Qualifier指定Bean的名称
范例：
a.可以对类的成员变量进行标注
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
@Qualifier("userDao")
private UserDao userDao;
……
}
b.也可以对方法的入参进行标注
@Service("userService")
public class UserServiceImpl implements UserService {
private UserDao userDao;
@Autowired
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
}
4.使用@Scope注解指定Bean的作用域
范例：
@Scope("prototype")
@Service("userService")
public class UserService implements UserService {
……
}
5.使用注解信息启动Spring容器
范例：
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="……
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- 扫描包中注解标注的类 -->
<!-- 指定需要扫描的基类包，多个包可用逗号隔开 -->
<context:component-scan base-package="com.xuetang9.demo.service, com.xuetang9.demo.dao" />
</beans>
使用注解实现事务处理：
1.在Spring配置文件中配置事务管理类，并添加对注解配置的事务的支持
范例：
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="txManager" />
2.使用@Transactional为方法添加事务支持
范例：
public class UserServiceImpl implements UserService {
@Transactional(readOnly=true)
public User login(User user){
......
}
}
3.@Transactional属性
属性 类型 说明
propagation 枚举型：Propagation 可选的传播性设置。使用举例：@Transactional(propagation=Propagation.REQUIRES_NEW)
isolation 枚举型：Isolation 可选的隔离性级别。使用举例：@Transactional(isolation=Isolation.READ_COMMITTED)
readOnly 布尔型 是否为只读型事务。使用举例：@Transactional(readOnly=true)
timeout sint型（以秒为单位） 事务超时。使用举例：Transactional(timeout=10)
rollbackFor 一组 Class 类的实例，必须是Throwable的子类 一组异常类，遇到时 必须回滚。使用举例：@Transactional(rollbackFor={SQLException.class})，多个异常用逗号隔开
rollbackForClassName 一组 Class 类的名字，必须是Throwable的子类 一组异常类名，遇到时 必须回滚。使用举例：@Transactional(rollbackForClassName={"SQLException"})，多个异常用逗号隔开
noRollbackFor 一组 Class 类的实例，必须是Throwable的子类 一组异常类，遇到时 必须不回滚
noRollbackForClassName 一组 Class 类的名字，必须是Throwable的子类 一组异常类名，遇到时 必须不回滚
范例：
1.hibernate的配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/hibernatedb</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
</session-factory>
</hibernate-configuration>
2.Struts的配置文件
<?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="default" namespace="/" extends="struts-default">
<action name="login" class="com.Elastic.SpringDemo4.ivy.action.UserAction" method="login">
<result name="success">/index.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>
</struts>
3.Spring的配置文件
a1.spring与hibernate的配置文件分离 -- applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
</bean>
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:advice id="tx" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/>
<tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" />
<aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/>
</aop:config>
</beans>
a2.spring与hibernate集成 -- applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <!-- 配置DataSource，c3p0的方式配置数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="root"></property>
<property name="password" value="root"></property>
<property name="jdbcUrl" value="jdbc:mysql://localhost/hibernatedb"></property>
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="initialPoolSize" value="10"></property>
<property name="minPoolSize" value="5"></property>
<property name="maxPoolSize" value="100"></property>
<property name="acquireIncrement" value="3"></property>
<property name="acquireRetryAttempts" value="3"></property>
<property name="acquireRetryDelay" value="5"></property>
<property name="idleConnectionTestPeriod" value="60"></property>
</bean> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
<property name="mappingLocations">
<list>
<value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value>
</list>
</property>
<!-- 加载持久化类也可以使用<property name="packagesToScan" value="com.Elastic.SpringDemo4.ivy.entity" /> -->
<!-- <property name="annotatedClasses">
<list>
<value>com.Elastic.SpringDemo4.ivy.entity.User</value>
</list>
</property> -->
</bean>
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:advice id="tx" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/>
<tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" />
<aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/>
</aop:config>
</beans>
a3.在Spring中引用属性文件 -- applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 配置属性文件的读取 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"></property>
</bean> <!-- 配置DataSource -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property>
<property name="minPoolSize" value="${jdbc.minPoolSize}"></property>
<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
<property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property>
<property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property>
<property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property>
<property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property>
</bean> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
<property name="mappingLocations">
<list>
<value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value>
</list>
</property>
</bean>
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:advice id="tx" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/>
<tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" />
<aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/>
</aop:config>
</beans>
a4.当有多个Spring的配置文件时 -- applicationContext.xml
方法二：applicationContext配置中用,<import resource="">
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<!-- 配置属性文件的读取 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"></property>
</bean> <!-- 配置DataSource -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property>
<property name="minPoolSize" value="${jdbc.minPoolSize}"></property>
<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
<property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property>
<property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property>
<property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property>
<property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property>
</bean> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<!-- <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> -->
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
<property name="mappingLocations">
<list>
<value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value>
</list>
</property>
</bean>
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:advice id="tx" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/>
<tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" />
<aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/>
</aop:config> <!-- DAO -->
<import resource="Spring-DAO.xml"/> <!-- Service -->
<import resource="Spring-Service.xml"/>
</beans>
a5.使用注解 -- applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- 配置属性文件的读取 -->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"></property>
</bean> <!-- 配置DataSource -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property>
<property name="minPoolSize" value="${jdbc.minPoolSize}"></property>
<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
<property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property>
<property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property>
<property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property>
<property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property>
</bean> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
<property name="mappingLocations">
<list>
<value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value>
</list>
</property>
</bean> <!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> <!-- 使用注解配置DAO\Service -->
<context:component-scan base-package="com.Elastic.SpringDemo4.ivy"></context:component-scan>
</beans>
b.Spring-DAO.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> <bean id="userDao" class="com.Elastic.SpringDemo4.ivy.dao.impl.UserDaoImpl">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean> </beans>
b2.Spring自动配置 -- Spring-DAO.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> <bean id="userDao" class="com.Elastic.SpringDemo4.ivy.dao.impl.UserDaoImpl" autowire="byName">
</bean>
</beans>
c.Spring-Service.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> <bean id="userService" class="com.Elastic.SpringDemo4.ivy.service.impl.UserServiceImpl">
<property name="userDao" ref="userDao"></property>
</bean>
</beans>
c2.Spring自动配置 -- Spring-Service.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> <bean id="userService" class="com.Elastic.SpringDemo4.ivy.service.impl.UserServiceImpl" autowire="byName">
</bean>
</beans>
4.动态Java项目的配置
a.web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>SpringDemo4_ivy</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list> <!-- 配置Spring文件的位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param> <!-- 配置Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <!-- OpenSessionInView -->
<filter>
<filter-name>OpenSessionInView</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInView</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <!-- 配置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> <!-- 设置session过期时间（单位：分钟） -->
<session-config>
<session-timeout>20</session-timeout>
</session-config> </web-app>
b.当有多个Spring的配置文件时
方法一：context-param配置中用逗号隔开
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>SpringDemo4_ivy</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list> <!-- 配置Spring文件的位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml,classpath:Spring-*.xml</param-value>
</context-param> <!-- 配置Spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <!-- OpenSessionInView -->
<filter>
<filter-name>OpenSessionInView</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInView</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <!-- 配置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> <!-- 设置session过期时间（单位：分钟） -->
<session-config>
<session-timeout>20</session-timeout>
</session-config> </web-app>
5.属性文件
a.jdbc.properties
jdbc.username=root
jdbc.password=root
jdbc.url=jdbc:mysql://localhost/hibernatedb
jdbc.driver=com.mysql.jdbc.Driver # c3p0
jdbc.initialPoolSize=10
jdbc.minPoolSize=5
jdbc.maxPoolSize=100
jdbc.acquireIncrement=3
jdbc.acquireRetryAttempts=3
jdbc.acquireRetryDelay=5
jdbc.idleConnectionTestPeriod=60
6.实体类及其配置文件
a.User类
package com.Elastic.SpringDemo4.ivy.entity;
import java.io.Serializable;
public class User implements Serializable{
private String loginName;
private String loginPass;
public String getLoginName() {
return loginName;
}
public void setLoginName(String loginName) {
this.loginName = loginName;
}
public String getLoginPass() {
return loginPass;
}
public void setLoginPass(String loginPass) {
this.loginPass = loginPass;
}
}
b.User.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2016-7-8 16:52:24 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="com.Elastic.SpringDemo4.ivy.entity.User" table="user">
<id name="loginName" type="java.lang.String">
<column name="userName" />
<generator class="assigned" />
</id>
<property name="loginPass" type="java.lang.String">
<column name="passWord" />
</property>
</class>
</hibernate-mapping>
7.dao包
a.UserDao接口
package com.Elastic.SpringDemo4.ivy.dao;
import java.io.Serializable;
import com.Elastic.SpringDemo4.ivy.entity.User;
public interface UserDao {
User findById(Serializable id);
}
8.dao.impl包
a1.UserDaoImpl
package com.Elastic.SpringDemo4.ivy.dao.impl; import java.io.Serializable; import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository; import com.Elastic.SpringDemo4.ivy.dao.UserDao;
import com.Elastic.SpringDemo4.ivy.entity.User; public class UserDaoImpl extends HibernateDaoSupport implements UserDao { @Override
public User findById(Serializable id) {
return this.getHibernateTemplate().get(User.class, id);
}
}
a2.使用注解 -- UserDaoImpl
package com.Elastic.SpringDemo4.ivy.dao.impl; import java.io.Serializable; import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository; import com.Elastic.SpringDemo4.ivy.dao.UserDao;
import com.Elastic.SpringDemo4.ivy.entity.User; @Repository
public class UserDaoImpl extends HibernateDaoSupport implements UserDao { @Autowired
public UserDaoImpl(SessionFactory sessionFactory) {
super.setSessionFactory(sessionFactory);
} @Override
public User findById(Serializable id) {
return this.getHibernateTemplate().get(User.class, id);
}
}
b.使用注解 -- TestUserDaoImpl
package com.Elastic.SpringDemo4.ivy.dao.impl; import java.io.Serializable; import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository; import com.Elastic.SpringDemo4.ivy.dao.UserDao;
import com.Elastic.SpringDemo4.ivy.entity.User; @Repository
public class TestUserDaoImpl extends HibernateDaoSupport implements UserDao { @Autowired
public TestUserDaoImpl(SessionFactory sessionFactory) {
super.setSessionFactory(sessionFactory);
} @Override
public User findById(Serializable id) {
return null;
}
}
9.service包
a.UserService接口
package com.Elastic.SpringDemo4.ivy.service;
import com.Elastic.SpringDemo4.ivy.entity.User;
public interface UserService {
public User search(String name, String pass);
}
10.service.impl包
a.UserServiceImpl
package com.Elastic.SpringDemo4.ivy.service.impl; import com.Elastic.SpringDemo4.ivy.dao.UserDao;
import com.Elastic.SpringDemo4.ivy.entity.User;
import com.Elastic.SpringDemo4.ivy.service.UserService; public class UserServiceImpl implements UserService {
private UserDao userDao; public UserDao getUserDao() {
return userDao;
} public void setUserDao(UserDao userDao) {
this.userDao = userDao;
} @Override
public User search(String name, String pass) {
User user = userDao.findById(name);
if (null != user && user.getLoginPass().equals(pass)) {
return user;
}
return null;
}
}
a2.使用注解 -- UserServiceImpl
package com.Elastic.SpringDemo4.ivy.service.impl; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional; import com.Elastic.SpringDemo4.ivy.dao.UserDao;
import com.Elastic.SpringDemo4.ivy.entity.User;
import com.Elastic.SpringDemo4.ivy.service.UserService; @Service("userService")
@Transactional(propagation=Propagation.REQUIRED,rollbackFor={Exception.class,RuntimeException.class})
public class UserServiceImpl implements UserService {
//方法一
@Autowired
@Qualifier("userDaoImpl")
private UserDao userDao; //方法二
/*public UserDao getUserDao() {
return userDao;
} @Autowired
@Qualifier("testUserDaoImpl")
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}*/ // @Transactional(propagation=Propagation.REQUIRED,readOnly=true,timeout=3,rollbackFor={Exception.class,RuntimeException.class})
@Transactional(timeout=3)
@Override
public User search(String name, String pass) {
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
e.printStackTrace();
} User user = userDao.findById(name);
if (null != user && user.getLoginPass().equals(pass)) {
return user;
}
return null;
} @Transactional
public void test() {
userDao.findById("");
}
}
11.action包
a.UserAction
package com.Elastic.SpringDemo4.ivy.action; import com.Elastic.SpringDemo4.ivy.entity.User;
import com.Elastic.SpringDemo4.ivy.service.UserService;
import com.opensymphony.xwork2.ActionSupport; public class UserAction extends ActionSupport {
private UserService userService;
private User user; public UserService getUserService() {
return userService;
} public void setUserService(UserService userService) {
this.userService = userService;
} public User getUser() {
return user;
} public void setUser(User user) {
this.user = user;
} public String login() {
User loginUser = userService.search(user.getLoginName(), user.getLoginPass());
if (null == loginUser) {
return ERROR;
}
return SUCCESS;
}
}
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