spring的配置文件及使用_spring的配置文件如何使用-优快云博客

本文链接：https://blog.youkuaiyun.com/opnmzxcvb/article/details/4570821

本文介绍了一个具体的Spring框架配置实例，展示了如何通过applicationContext.xml文件定义数据源、登录表单及动作类等Bean，并配置了AOP来增强特定方法的行为。此外，还提供了两种初始化Spring上下文的方法。

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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>  <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>  <bean id="loginForm" class="com.spring.chapterNine.LoginActionForm"> <property name="userName"> <value>test</value> </property> <property name="password"> <value>pass</value> </property> </bean>  <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>  <bean id="loginBeforeAdvice" class="LoginBeforeAdvice"></bean>  <bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean">  <property name="proxyInterfaces"> <value>com.spring.LoginAction</value> </property>  <property name="target"> <ref local="customerLogin"/> </property>  <property name="interceptorNames"> <value>loginBeforeAdvice</value> </property> </bean>  <bean id="loginBeforeAdvice" class="com.spring.LoginBeforeAdvice"></bean>  <bean id="loginRegPointcutAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">  <property name="pattern"> <value>.*execute.*</value> </property> </bean> <bean id="loginPointcutAdvisor" class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor">  <property name="mappedName"> <value>execute</value> </property>  <property name="advice"> <ref bean="loginBeforeAdvice"/> </property> </bean>  <bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="proxyInterfaces"> <value>com.spring.LoginAction</value> </property>  <property name="interceptorNames"> <value>loginPointcutAdvisor</value> </property> <property name="target"> <ref local="customerLogin"/> </property> </bean> <bean id="loginIntroductionAdvisor" class="org.springframework.aop.support.DefaultIntroductionAdvisor">  <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

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"); }

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