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
1 jdbc.driver = com.mysql.jdbc.Driver 2 jdbc.url = jdbc:mysql://localhost/db 3 jdbc.username = root 4 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:
1 @Repository("userDao") 2 public class UserDaoImpl implements UserDao { 3 … 4 }
等效:与在XML配置文件中编写
1 <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
1 @Service("userService") 2 public class UserServiceImpl implements UserService { 3 @Autowired 4 @Qualifier("userDao") 5 private UserDao userDao; 6 …… 7 }
b.也可以对方法的入参进行标注
1 @Service("userService") 2 public class UserServiceImpl implements UserService { 3 private UserDao userDao; 4 @Autowired 5 public void setUserDao(UserDao userDao) { 6 this.userDao = userDao; 7 } 8 }
4.使用@Scope注解指定Bean的作用域
范例:
1 @Scope("prototype") 2 @Service("userService") 3 public class UserService implements UserService { 4 …… 5 }
5.使用注解信息启动Spring容器
范例:
1 <beans xmlns="http://www.springframework.org/schema/beans" 2 xmlns:context="http://www.springframework.org/schema/context" 3 xsi:schemaLocation="…… 4 http://www.springframework.org/schema/context 5 http://www.springframework.org/schema/context/spring-context-3.2.xsd"> 6 <!-- 扫描包中注解标注的类 --> 7 <!-- 指定需要扫描的基类包,多个包可用逗号隔开 --> 8 <context:component-scan base-package="com.xuetang9.demo.service, com.xuetang9.demo.dao" /> 9 </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:
1 <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 2 <property name="sessionFactory" ref="sessionFactory" /> 3 </bean> 4 <tx:annotation-driven transaction-manager="txManager" />
2.使用@Transactional为方法添加事务支持
范例:
1 public class UserServiceImpl implements UserService { 2 @Transactional(readOnly=true) 3 public User login(User user){ 4 ...... 5 } 6 }
[email protected]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
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE hibernate-configuration PUBLIC 3 "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 4 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 5 <hibernate-configuration> 6 <session-factory> 7 <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 8 <property name="hibernate.connection.password">root</property> 9 <property name="hibernate.connection.url">jdbc:mysql://localhost/hibernatedb</property> 10 <property name="hibernate.connection.username">root</property> 11 <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 12 </session-factory> 13 </hibernate-configuration>
2.Struts的配置文件
3.Spring的配置文件
a1.spring与hibernate的配置文件分离 -- applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 12 13 <!-- 配置SessionFactory --> 14 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 15 <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> 16 </bean> 17 <!-- 配置事务 --> 18 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 19 <property name="sessionFactory" ref="sessionFactory"></property> 20 </bean> 21 <tx:advice id="tx" transaction-manager="transactionManager"> 22 <tx:attributes> 23 <tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/> 24 <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> 25 </tx:attributes> 26 </tx:advice> 27 <aop:config> 28 <aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" /> 29 <aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/> 30 </aop:config> 31 </beans>
a2.spring与hibernate集成 -- applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 12 13 <!-- 配置DataSource,c3p0的方式配置数据源 --> 14 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 15 <property name="user" value="root"></property> 16 <property name="password" value="root"></property> 17 <property name="jdbcUrl" value="jdbc:mysql://localhost/hibernatedb"></property> 18 <property name="driverClass" value="com.mysql.jdbc.Driver"></property> 19 <property name="initialPoolSize" value="10"></property> 20 <property name="minPoolSize" value="5"></property> 21 <property name="maxPoolSize" value="100"></property> 22 <property name="acquireIncrement" value="3"></property> 23 <property name="acquireRetryAttempts" value="3"></property> 24 <property name="acquireRetryDelay" value="5"></property> 25 <property name="idleConnectionTestPeriod" value="60"></property> 26 </bean> 27 28 <!-- 配置SessionFactory --> 29 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 30 <property name="dataSource" ref="dataSource"></property> 31 <property name="hibernateProperties"> 32 <props> 33 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop> 34 <prop key="show_sql">true</prop> 35 <prop key="format_sql">true</prop> 36 </props> 37 </property> 38 <property name="mappingLocations"> 39 <list> 40 <value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value> 41 </list> 42 </property> 43 <!-- 加载持久化类也可以使用<property name="packagesToScan" value="com.Elastic.SpringDemo4.ivy.entity" /> --> 44 <!-- <property name="annotatedClasses"> 45 <list> 46 <value>com.Elastic.SpringDemo4.ivy.entity.User</value> 47 </list> 48 </property> --> 49 </bean> 50 <!-- 配置事务 --> 51 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 52 <property name="sessionFactory" ref="sessionFactory"></property> 53 </bean> 54 <tx:advice id="tx" transaction-manager="transactionManager"> 55 <tx:attributes> 56 <tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/> 57 <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> 58 </tx:attributes> 59 </tx:advice> 60 <aop:config> 61 <aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" /> 62 <aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/> 63 </aop:config> 64 </beans>
a3.在Spring中引用属性文件 -- applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 12 <!-- 配置属性文件的读取 --> 13 <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 14 <property name="location" value="classpath:jdbc.properties"></property> 15 </bean> 16 17 <!-- 配置DataSource --> 18 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 19 <property name="user" value="${jdbc.username}"></property> 20 <property name="password" value="${jdbc.password}"></property> 21 <property name="jdbcUrl" value="${jdbc.url}"></property> 22 <property name="driverClass" value="${jdbc.driver}"></property> 23 <property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property> 24 <property name="minPoolSize" value="${jdbc.minPoolSize}"></property> 25 <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property> 26 <property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property> 27 <property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property> 28 <property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property> 29 <property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property> 30 </bean> 31 32 <!-- 配置SessionFactory --> 33 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 34 <property name="dataSource" ref="dataSource"></property> 35 <property name="hibernateProperties"> 36 <props> 37 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop> 38 <prop key="show_sql">true</prop> 39 <prop key="format_sql">true</prop> 40 </props> 41 </property> 42 <property name="mappingLocations"> 43 <list> 44 <value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value> 45 </list> 46 </property> 47 </bean> 48 <!-- 配置事务 --> 49 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 50 <property name="sessionFactory" ref="sessionFactory"></property> 51 </bean> 52 <tx:advice id="tx" transaction-manager="transactionManager"> 53 <tx:attributes> 54 <tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/> 55 <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> 56 </tx:attributes> 57 </tx:advice> 58 <aop:config> 59 <aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" /> 60 <aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/> 61 </aop:config> 62 </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="">
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> 12 <!-- 配置属性文件的读取 --> 13 <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 14 <property name="location" value="classpath:jdbc.properties"></property> 15 </bean> 16 17 <!-- 配置DataSource --> 18 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 19 <property name="user" value="${jdbc.username}"></property> 20 <property name="password" value="${jdbc.password}"></property> 21 <property name="jdbcUrl" value="${jdbc.url}"></property> 22 <property name="driverClass" value="${jdbc.driver}"></property> 23 <property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property> 24 <property name="minPoolSize" value="${jdbc.minPoolSize}"></property> 25 <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property> 26 <property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property> 27 <property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property> 28 <property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property> 29 <property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property> 30 </bean> 31 32 <!-- 配置SessionFactory --> 33 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> 34 <!-- <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> --> 35 <property name="dataSource" ref="dataSource"></property> 36 <property name="hibernateProperties"> 37 <props> 38 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop> 39 <prop key="show_sql">true</prop> 40 <prop key="format_sql">true</prop> 41 </props> 42 </property> 43 <property name="mappingLocations"> 44 <list> 45 <value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value> 46 </list> 47 </property> 48 </bean> 49 <!-- 配置事务 --> 50 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 51 <property name="sessionFactory" ref="sessionFactory"></property> 52 </bean> 53 <tx:advice id="tx" transaction-manager="transactionManager"> 54 <tx:attributes> 55 <tx:method name="search*" propagation="REQUIRED" read-only="true" timeout="5"/> 56 <tx:method name="create*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> 57 </tx:attributes> 58 </tx:advice> 59 <aop:config> 60 <aop:pointcut id="txpointcut" expression="execution(* com.Elastic.SpringDemo4.ivy.service..*.*(..))" /> 61 <aop:advisor advice-ref="tx" pointcut-ref="txpointcut"/> 62 </aop:config> 63 64 <!-- DAO --> 65 <import resource="Spring-DAO.xml"/> 66 67 <!-- Service --> 68 <import resource="Spring-Service.xml"/> 69 </beans>
a5.使用注解 -- applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:context="http://www.springframework.org/schema/context" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 9 http://www.springframework.org/schema/aop 10 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 11 http://www.springframework.org/schema/tx 12 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd 13 http://www.springframework.org/schema/context 14 http://www.springframework.org/schema/context/spring-context-3.2.xsd"> 15 <!-- 配置属性文件的读取 --> 16 <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 17 <property name="location" value="classpath:jdbc.properties"></property> 18 </bean> 19 20 <!-- 配置DataSource --> 21 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 22 <property name="user" value="${jdbc.username}"></property> 23 <property name="password" value="${jdbc.password}"></property> 24 <property name="jdbcUrl" value="${jdbc.url}"></property> 25 <property name="driverClass" value="${jdbc.driver}"></property> 26 <property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property> 27 <property name="minPoolSize" value="${jdbc.minPoolSize}"></property> 28 <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property> 29 <property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property> 30 <property name="acquireRetryAttempts" value="${jdbc.acquireRetryAttempts}"></property> 31 <property name="acquireRetryDelay" value="${jdbc.acquireRetryDelay}"></property> 32 <property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"></property> 33 </bean> 34 35 <!-- 配置SessionFactory --> 36 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> 37 <property name="dataSource" ref="dataSource"></property> 38 <property name="hibernateProperties"> 39 <props> 40 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop> 41 <prop key="show_sql">true</prop> 42 <prop key="format_sql">true</prop> 43 </props> 44 </property> 45 <property name="mappingLocations"> 46 <list> 47 <value>classpath:com/Elastic/SpringDemo4/ivy/entity/*.hbm.xml</value> 48 </list> 49 </property> 50 </bean> 51 52 <!-- 配置事务 --> 53 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 54 <property name="sessionFactory" ref="sessionFactory"></property> 55 </bean> 56 <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> 57 58 <!-- 使用注解配置DAO\Service --> 59 <context:component-scan base-package="com.Elastic.SpringDemo4.ivy"></context:component-scan> 60 </beans>
b.Spring-DAO.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 6 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 7 8 <bean id="userDao" class="com.Elastic.SpringDemo4.ivy.dao.impl.UserDaoImpl"> 9 <property name="sessionFactory" ref="sessionFactory"></property> 10 </bean> 11 12 </beans>
b2.Spring自动配置 -- Spring-DAO.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 6 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 7 8 <bean id="userDao" class="com.Elastic.SpringDemo4.ivy.dao.impl.UserDaoImpl" autowire="byName"> 9 </bean> 10 </beans>
c.Spring-Service.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 6 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 7 8 <bean id="userService" class="com.Elastic.SpringDemo4.ivy.service.impl.UserServiceImpl"> 9 <property name="userDao" ref="userDao"></property> 10 </bean> 11 </beans>
c2.Spring自动配置 -- Spring-Service.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 6 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 7 8 <bean id="userService" class="com.Elastic.SpringDemo4.ivy.service.impl.UserServiceImpl" autowire="byName"> 9 </bean> 10 </beans>
4.动态Java项目的配置
a.web.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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"> 3 <display-name>SpringDemo4_ivy</display-name> 4 <welcome-file-list> 5 <welcome-file>index.html</welcome-file> 6 <welcome-file>index.htm</welcome-file> 7 <welcome-file>index.jsp</welcome-file> 8 <welcome-file>default.html</welcome-file> 9 <welcome-file>default.htm</welcome-file> 10 <welcome-file>default.jsp</welcome-file> 11 </welcome-file-list> 12 13 <!-- 配置Spring文件的位置 --> 14 <context-param> 15 <param-name>contextConfigLocation</param-name> 16 <param-value>classpath:applicationContext.xml</param-value> 17 </context-param> 18 19 <!-- 配置Spring监听器 --> 20 <listener> 21 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 22 </listener> 23 24 <!-- OpenSessionInView --> 25 <filter> 26 <filter-name>OpenSessionInView</filter-name> 27 <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> 28 </filter> 29 <filter-mapping> 30 <filter-name>OpenSessionInView</filter-name> 31 <url-pattern>/*</url-pattern> 32 </filter-mapping> 33 34 <!-- 配置Struts2核心过滤器 --> 35 <filter> 36 <filter-name>Struts2</filter-name> 37 <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> 38 </filter> 39 <filter-mapping> 40 <filter-name>Struts2</filter-name> 41 <url-pattern>/*</url-pattern> 42 </filter-mapping> 43 44 <!-- 设置session过期时间(单位:分钟) --> 45 <session-config> 46 <session-timeout>20</session-timeout> 47 </session-config> 48 49 </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
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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"> 3 <display-name>SpringDemo4_ivy</display-name> 4 <welcome-file-list> 5 <welcome-file>index.html</welcome-file> 6 <welcome-file>index.htm</welcome-file> 7 <welcome-file>index.jsp</welcome-file> 8 <welcome-file>default.html</welcome-file> 9 <welcome-file>default.htm</welcome-file> 10 <welcome-file>default.jsp</welcome-file> 11 </welcome-file-list> 12 13 <!-- 配置Spring文件的位置 --> 14 <context-param> 15 <param-name>contextConfigLocation</param-name> 16 <param-value>classpath:applicationContext.xml,classpath:Spring-*.xml</param-value> 17 </context-param> 18 19 <!-- 配置Spring监听器 --> 20 <listener> 21 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 22 </listener> 23 24 <!-- OpenSessionInView --> 25 <filter> 26 <filter-name>OpenSessionInView</filter-name> 27 <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> 28 </filter> 29 <filter-mapping> 30 <filter-name>OpenSessionInView</filter-name> 31 <url-pattern>/*</url-pattern> 32 </filter-mapping> 33 34 <!-- 配置Struts2核心过滤器 --> 35 <filter> 36 <filter-name>Struts2</filter-name> 37 <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> 38 </filter> 39 <filter-mapping> 40 <filter-name>Struts2</filter-name> 41 <url-pattern>/*</url-pattern> 42 </filter-mapping> 43 44 <!-- 设置session过期时间(单位:分钟) --> 45 <session-config> 46 <session-timeout>20</session-timeout> 47 </session-config> 48 49 </web-app>
5.属性文件
a.jdbc.properties
1 jdbc.username=root 2 jdbc.password=root 3 jdbc.url=jdbc:mysql://localhost/hibernatedb 4 jdbc.driver=com.mysql.jdbc.Driver 5 6 # c3p0 7 jdbc.initialPoolSize=10 8 jdbc.minPoolSize=5 9 jdbc.maxPoolSize=100 10 jdbc.acquireIncrement=3 11 jdbc.acquireRetryAttempts=3 12 jdbc.acquireRetryDelay=5 13 jdbc.idleConnectionTestPeriod=60
6.实体类及其配置文件
a.User类
1 package com.Elastic.SpringDemo4.ivy.entity; 2 3 import java.io.Serializable; 4 5 public class User implements Serializable{ 6 private String loginName; 7 private String loginPass; 8 9 public String getLoginName() { 10 return loginName; 11 } 12 public void setLoginName(String loginName) { 13 this.loginName = loginName; 14 } 15 public String getLoginPass() { 16 return loginPass; 17 } 18 public void setLoginPass(String loginPass) { 19 this.loginPass = loginPass; 20 } 21 22 }
b.User.hbm.xml
1 <?xml version="1.0"?> 2 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 3 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> 4 <!-- Generated 2016-7-8 16:52:24 by Hibernate Tools 3.4.0.CR1 --> 5 <hibernate-mapping> 6 <class name="com.Elastic.SpringDemo4.ivy.entity.User" table="user"> 7 <id name="loginName" type="java.lang.String"> 8 <column name="userName" /> 9 <generator class="assigned" /> 10 </id> 11 <property name="loginPass" type="java.lang.String"> 12 <column name="passWord" /> 13 </property> 14 </class> 15 </hibernate-mapping>
7.dao包
a.UserDao接口
1 package com.Elastic.SpringDemo4.ivy.dao; 2 3 import java.io.Serializable; 4 5 import com.Elastic.SpringDemo4.ivy.entity.User; 6 7 public interface UserDao { 8 User findById(Serializable id); 9 }
8.dao.impl包
a1.UserDaoImpl
1 package com.Elastic.SpringDemo4.ivy.dao.impl; 2 3 import java.io.Serializable; 4 5 import org.hibernate.SessionFactory; 6 import org.springframework.beans.factory.annotation.Autowired; 7 import org.springframework.orm.hibernate3.support.HibernateDaoSupport; 8 import org.springframework.stereotype.Repository; 9 10 import com.Elastic.SpringDemo4.ivy.dao.UserDao; 11 import com.Elastic.SpringDemo4.ivy.entity.User; 12 13 public class UserDaoImpl extends HibernateDaoSupport implements UserDao { 14 15 @Override 16 public User findById(Serializable id) { 17 return this.getHibernateTemplate().get(User.class, id); 18 } 19 }
a2.使用注解 -- UserDaoImpl
1 package com.Elastic.SpringDemo4.ivy.dao.impl; 2 3 import java.io.Serializable; 4 5 import org.hibernate.SessionFactory; 6 import org.springframework.beans.factory.annotation.Autowired; 7 import org.springframework.orm.hibernate3.support.HibernateDaoSupport; 8 import org.springframework.stereotype.Repository; 9 10 import com.Elastic.SpringDemo4.ivy.dao.UserDao; 11 import com.Elastic.SpringDemo4.ivy.entity.User; 12 13 @Repository 14 public class UserDaoImpl extends HibernateDaoSupport implements UserDao { 15 16 @Autowired 17 public UserDaoImpl(SessionFactory sessionFactory) { 18 super.setSessionFactory(sessionFactory); 19 } 20 21 @Override 22 public User findById(Serializable id) { 23 return this.getHibernateTemplate().get(User.class, id); 24 } 25 }
b.使用注解 -- TestUserDaoImpl
1 package com.Elastic.SpringDemo4.ivy.dao.impl; 2 3 import java.io.Serializable; 4 5 import org.hibernate.SessionFactory; 6 import org.springframework.beans.factory.annotation.Autowired; 7 import org.springframework.orm.hibernate3.support.HibernateDaoSupport; 8 import org.springframework.stereotype.Repository; 9 10 import com.Elastic.SpringDemo4.ivy.dao.UserDao; 11 import com.Elastic.SpringDemo4.ivy.entity.User; 12 13 @Repository 14 public class TestUserDaoImpl extends HibernateDaoSupport implements UserDao { 15 16 @Autowired 17 public TestUserDaoImpl(SessionFactory sessionFactory) { 18 super.setSessionFactory(sessionFactory); 19 } 20 21 @Override 22 public User findById(Serializable id) { 23 return null; 24 } 25 }
9.service包
a.UserService接口
1 package com.Elastic.SpringDemo4.ivy.service; 2 3 import com.Elastic.SpringDemo4.ivy.entity.User; 4 5 public interface UserService { 6 public User search(String name, String pass); 7 }
10.service.impl包
a.UserServiceImpl
1 package com.Elastic.SpringDemo4.ivy.service.impl; 2 3 import com.Elastic.SpringDemo4.ivy.dao.UserDao; 4 import com.Elastic.SpringDemo4.ivy.entity.User; 5 import com.Elastic.SpringDemo4.ivy.service.UserService; 6 7 public class UserServiceImpl implements UserService { 8 private UserDao userDao; 9 10 public UserDao getUserDao() { 11 return userDao; 12 } 13 14 public void setUserDao(UserDao userDao) { 15 this.userDao = userDao; 16 } 17 18 @Override 19 public User search(String name, String pass) { 20 User user = userDao.findById(name); 21 if (null != user && user.getLoginPass().equals(pass)) { 22 return user; 23 } 24 return null; 25 } 26 }
a2.使用注解 -- UserServiceImpl
1 package com.Elastic.SpringDemo4.ivy.service.impl; 2 3 import org.springframework.beans.factory.annotation.Autowired; 4 import org.springframework.beans.factory.annotation.Qualifier; 5 import org.springframework.stereotype.Service; 6 import org.springframework.transaction.annotation.Propagation; 7 import org.springframework.transaction.annotation.Transactional; 8 9 import com.Elastic.SpringDemo4.ivy.dao.UserDao; 10 import com.Elastic.SpringDemo4.ivy.entity.User; 11 import com.Elastic.SpringDemo4.ivy.service.UserService; 12 13 @Service("userService") 14 @Transactional(propagation=Propagation.REQUIRED,rollbackFor={Exception.class,RuntimeException.class}) 15 public class UserServiceImpl implements UserService { 16 //方法一 17 @Autowired 18 @Qualifier("userDaoImpl") 19 private UserDao userDao; 20 21 //方法二 22 /*public UserDao getUserDao() { 23 return userDao; 24 } 25 26 @Autowired 27 @Qualifier("testUserDaoImpl") 28 public void setUserDao(UserDao userDao) { 29 this.userDao = userDao; 30 }*/ 31 32 // @Transactional(propagation=Propagation.REQUIRED,readOnly=true,timeout=3,rollbackFor={Exception.class,RuntimeException.class}) 33 @Transactional(timeout=3) 34 @Override 35 public User search(String name, String pass) { 36 try { 37 Thread.sleep(4000); 38 } catch (InterruptedException e) { 39 e.printStackTrace(); 40 } 41 42 User user = userDao.findById(name); 43 if (null != user && user.getLoginPass().equals(pass)) { 44 return user; 45 } 46 return null; 47 } 48 49 @Transactional 50 public void test() { 51 userDao.findById(""); 52 } 53 }
11.action包
a.UserAction
1 package com.Elastic.SpringDemo4.ivy.action; 2 3 import com.Elastic.SpringDemo4.ivy.entity.User; 4 import com.Elastic.SpringDemo4.ivy.service.UserService; 5 import com.opensymphony.xwork2.ActionSupport; 6 7 public class UserAction extends ActionSupport { 8 private UserService userService; 9 private User user; 10 11 public UserService getUserService() { 12 return userService; 13 } 14 15 public void setUserService(UserService userService) { 16 this.userService = userService; 17 } 18 19 public User getUser() { 20 return user; 21 } 22 23 public void setUser(User user) { 24 this.user = user; 25 } 26 27 public String login() { 28 User loginUser = userService.search(user.getLoginName(), user.getLoginPass()); 29 if (null == loginUser) { 30 return ERROR; 31 } 32 return SUCCESS; 33 } 34 }