从我们熟悉的web.xml开始...
1、web.xml:
- 指定spring配置文件bean.xml(默认applicationContext.xml)
- 指定servlet配置文件,默认[servletName]-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<!-- 强制进行转码 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
<!-- 默认的spring配置文件是在WEB-INF下的applicationContext.xml -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:bean.xml
</param-value>
</context-param>
<!--日志配置文件-->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<!-- springMVC的核心控制器 -->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--不指定配置文件位置,默认是servletName-servlet.xml-->
<param-value>classpath:WEB-INF/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- session配置 -->
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<!-- 欢迎页面 ,物理页面-->
<welcome-file-list>
<welcome-file>/WEB-INF/jsp/index.html</welcome-file>
</welcome-file-list>
<!-- 错误页面 -->
<!--<error-page>-->
<!--<error-code>403</error-code>-->
<!--<location>/WEB-INF/jsp/403.jsp</location>-->
<!--</error-page>-->
<!--<error-page>-->
<!--<error-code>404</error-code>-->
<!--<location>/WEB-INF/jsp/404.jsp</location>-->
<!--</error-page>-->
<!--<error-page>-->
<!--<error-code>500</error-code>-->
<!--<location>/WEB-INF/jsp/500.jsp</location>-->
<!--</error-page>-->
<error-page>
<exception-type>java.lang.Throwable</exception-type>
<location>/WEB-INF/jsp/error.jsp</location>
</error-page>
</web-app>
2、指定bean.xml,默认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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-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/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">
<context:property-placeholder location="classpath:c3p0_config.properties" />
<bean id="ConfigBean" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
</list>
</property>
</bean>
<!-- 或者下面这种方式加载jdbc.properties配置文件 -->
<!-- <context:property-placeholder location="classpath:jdbc.properties"/> -->
<!-- 或者下面这种方式加载jdbc.properties配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" p:location="classpath:jdbc.properties"/>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" p:configLocation="classpath:hibernate.cfg.xml"/>
<!-- 或者下面这种方式 -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
<property name="mappingDirectoryLocations">
<list>
<value>classpath*:/com/hbm</value>
</list>
</property>
</bean>
<!-- 配置hibernateTemplate Bean -->
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate" p:sessionFactory-ref="sessionFactory"/>
<!--事务管理配置-->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- 使用hibernate事务管理器 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager" p:sessionFactory-ref="sessionFactory" p:dataSource-ref="dataSource">
<!-- 或者 -->
<!-- <property name="sessionFactory" ref="sessionFactory"></property> -->
<!-- <property name="dataSource" ref="dataSource"></property> -->
</bean>
<!-- 使用普通事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 配置事务传播特性 -->
<tx:advice id="TransAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="merge*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="put*" propagation="REQUIRED" />
<tx:method name="use*" propagation="REQUIRED" />
//hibernate4必须配置为开启事务 否则 getCurrentSession()获取不到
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="count*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" propagation="REQUIRED" />
<tx:method name="*" timeout="30" />
</tx:attributes>
</tx:advice>
<!-- 配置参与事务的类 -->
<aop:config>
<aop:pointcut id="allTransServiceMethod" expression="execution(* com.dao.*.*(..))" />
<aop:advisor pointcut-ref="allTransServiceMethod"
advice-ref="TransAdvice" />
</aop:config>
<!--导入DAO bean配置文件-->
<!-- <import resource="classpath:spring/*-spring.xml" /> -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<!-- 指定连接数据库的驱动-->
<property name="driverClass" value="${jdbc.driverClassName}"/>
<!-- 指定连接数据库的URL-->
<property name="jdbcUrl" value="${jdbc.url}"/>
<!-- 指定连接数据库的用户名-->
<property name="user" value="${jdbc.username}"/>
<!-- 指定连接数据库的密码-->
<property name="password" value="${jdbc.password}"/>
<!-- 指定连接池中保留的最大连接数. Default:15-->
<property name="maxPoolSize" value="${jdbc.maxPoolSize}"/>
<!-- 指定连接池中保留的最小连接数-->
<property name="minPoolSize" value="${jdbc.minPoolSize}"/>
<!-- 指定连接池的初始化连接数 取值应在minPoolSize 与 maxPoolSize 之间.Default:3-->
<property name="initialPoolSize" value="${jdbc.initialPoolSize}"/>
<!-- 最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。 Default:0-->
<property name="maxIdleTime" value="${jdbc.maxIdleTime}"/>
<!-- 当连接池中的连接耗尽的时候c3p0一次同时获取的连接数. Default:3-->
<property name="acquireIncrement" value="${jdbc.acquireIncrement}"/>
<!-- JDBC的标准,用以控制数据源内加载的PreparedStatements数量。
但由于预缓存的statements属于单个connection而不是整个连接池所以设置这个参数需要考虑到多方面的因数.
如果maxStatements与maxStatementsPerConnection均为0,则缓存被关闭。Default:0 -->
<property name="maxStatements" value="${jdbc.maxStatements}"/>
<!-- 每60秒检查所有连接池中的空闲连接.Default:0 -->
<property name="idleConnectionTestPeriod" value="${jdbc.idleConnectionTestPeriod}"/>
<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
<property name="acquireRetryAttempts" value="30" />
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<!-- <property name="acquireIncrement" value="3" /> -->
<property name="breakAfterAcquireFailure" value="true" />
<property name="testConnectionOnCheckout" value="false" />
</bean>
</beans>
3、如果不指定spring mvc配置文件位置,默认使用WEB-INF/spring-servlet.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">
<beans>
<!-- spring mvc 配置-->
<mvc:annotation-driven/>
<!-- 扫描类包以启动注解驱动的Bean -->
<context:component-scan base-package="com.dao"></context:component-scan>
</beans>
4、hibernate.cfg.xml
<!-- 连接池hibernate配置c3p0数据源,需要再次配置数据源,c3p0才起作用 -->
<property name="hibernate.connection.provider_class">
org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider
</property>
<!-- 最小连接数 -->
<property name="c3p0.min_size">5</property>
<!-- 最大连接数 -->
<property name="c3p0.max_size">20</property>
<!-- 获得连接的超时时间,如果超过这个时间,会抛出异常,单位秒 -->
<property name="c3p0.timeout">120</property>
<!-- 最大的PreparedStatement的数量 -->
<property name="c3p0.max_statements">50</property>
<property name="c3p0.automaicTestTable">Test</property>
<!-- 每隔120秒检查连接池里的空闲连接 ,单位是秒 -->
<property name="c3p0.idle_test_period">120</property>
<!-- 当连接池里面的连接用完的时候,C3P0一下获取的新的连接数 -->
<property name="c3p0.acquire_increment">1</property>
<property name="c3p0.testConnectionOnCheckout">true</property>
<!-- 每隔120秒检查连接池里的空闲连接 ,单位是秒-->
<property name="c3p0.idleConnectionTestPeriod">18000</property>
<property name="c3p0.maxIdleTime">25000</property>
<property name="c3p0.idle_test_period">120</property>
<!-- 每次都验证连接是否可用 -->
<property name="c3p0.validate">true</property>
<property name="preferredTestQuery">select * from db_test</property>