一、创建项目
项目名称:spring100807
二、添加jar包
com.springsource.org.aopalliance-1.0.0.jar
commons-logging.jar
junit-4.10.jar
log4j.jar
spring-aop-3.2.0.RELEASE.jar
spring-beans-3.2.0.RELEASE.jar
spring-context-3.2.0.RELEASE.jar
spring-core-3.2.0.RELEASE.jar
spring-expression-3.2.0.RELEASE.jar
三、添加配置文件
1.在项目中创建conf目录
/conf
2.在conf目录下添加核心配置文件
配置文件名称:applicationContext.xml
配置文件内容:
<?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"
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.xsd">
</beans>
四、创建bean
1.在src下创建接口与实现类
包名:cn.jbit.spring100807.aop
接口名:CustomerService.java
public interface CustomerService {
public void login();
}
实现类名:CustomerServiceImpl.java
public class CustomerServiceImpl implements CustomerService {
@Override
public void login() {
System.out.println("登录方法");
}
}
2.创建通知
包名:cn.jbit.spring100807.advice
通知名:MyBeforeAdvice.java
public class MyBeforeAdvice implements MethodBeforeAdvice {
@Override
public void before(Method method, Object[] arg1, Object arg2)
throws Throwable {
method.invoke(arg2, arg1);
System.out.println("前置通知");
}
}
3.在配置文件中添加配置
<!-- 第一步:配置拦截目标类 -->
<bean id="customerservice" class="cn.jbit.spring100807.aop.CustomerServiceImpl"></bean>
<!-- 第二步:配置通知 -->
<bean id="mybeforeadvice" class="cn.jbit.spring100807.advice.MyBeforeAdvice"></bean>
<!-- 第三步:生成代理Bean -->
<bean id="customerproxybean" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces" value="cn.jbit.spring100807.aop.CustomerService"></property>
<property name="interceptorNames" value="mybeforeadvice"></property>
<property name="target" ref="customerservice"></property>
</bean>
五、测试
1.在项目中创建test目录
/test
2.在test目录下创建包
包名:cn.jbit.spring100807.advice
3.在包下创建测试类
类名:ProxyTest.java
类内容:
public class ProxyTest {
@Test
public void testBefore(){
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
CustomerService customerService = (CustomerService) context.getBean("customerproxybean");
//调用业务方法
customerService.login();
}
}
spring-前置通知
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