spring的配置文件及使用

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"><beans><!-- 建立数据源bean --><bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName"><value>com.mysql.jdbc.Driver</value></property><property name="url"><value>jdbc:mysql://localhost:3306/ssh?useUnicode=true&characterEncoding=UTF-8</value></property><property name="username"><value>root</value></property><property name="password"><value>root</value></property></bean><!-- 建立LoginActionForm bean --><bean id="loginForm" class="com.spring.chapterNine.LoginActionForm"><property name="userName"><value>test</value></property><property name="password"><value>pass</value></property></bean><!-- 建立CustomerLoginActionForm bean 类之间的依赖关系被定义出来 --><bean id="customer" class="com.spring.chapterNine.CustomerLoginAction" singleton="true"><property name="ds"><ref local="dataSource"/></property><property name="tablename"><value>customer</value></property><property name="loginActionForm"><ref local="loginForm"/></property><property name="checklogin"><ref bean="checklogin"/></property></bean><!-- 建立before类型通知bean --><bean id="loginBeforeAdvice" class="LoginBeforeAdvice"></bean><!-- 建立代理bean --><bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean"><!-- 注入代理对象实现的接口 --><property name="proxyInterfaces"><value>com.spring.LoginAction</value></property><!-- 注入目标对象，也就是被代理的对象 --><property name="target"><ref local="customerLogin"/></property><!-- 注入通知列表 --><property name="interceptorNames"><value>loginBeforeAdvice</value></property></bean><!-- Advisor的配置 --><bean id="loginBeforeAdvice" class="com.spring.LoginBeforeAdvice"></bean><!-- 定义Advisor --><bean id="loginRegPointcutAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"><!-- 用正则表达式来表示切点中方法名的范围，用来和目标对象方法名匹配，如果匹配则执行通知 --><property name="pattern"><value>.*execute.*</value></property></bean><bean id="loginPointcutAdvisor" class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor"><!-- 设定切点中方法名，用来和目标对象方法名匹配。如果匹配则执行通知value值可使用通配符 --><property name="mappedName"><value>execute</value></property><!-- 引入通知 --><property name="advice"><ref bean="loginBeforeAdvice"/></property></bean><!-- 定义代理 --><bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean"><property name="proxyInterfaces"><value>com.spring.LoginAction</value></property><!-- 下面引入Advisor，来根据切点执行通知 --><property name="interceptorNames"><value>loginPointcutAdvisor</value></property><property name="target"><ref local="customerLogin"/></property></bean><bean id="loginIntroductionAdvisor" class="org.springframework.aop.support.DefaultIntroductionAdvisor"><!-- 注入通知 --> <constructor-arg> <ref bean="loginIntroductionAdvice"/> </constructor-arg></bean></beans>

初始化spring有两种方法

1.servlet

<context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <servlet> <servlet-name>context</servlet-name> <servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet>

2.listener

<listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param>

使用spring的配置

1.

public static void main(String[] args){ ApplicationContext ctx= new FileSystemXmlApplicationContext("WEB-INF//applicationContext.xml"); LoginAction userLogin= null; userLogin=(LoginAction)ctx.getBean("customerLogin"); try { userLogin.execute(); } catch (SQLException e) { System.out.println("sorry,accessing database is failed");}

2.

ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletActionContext.getServletContext());