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SpringMVC用XML方式实现AOP的方法示例

作者:hmmmq!

这篇文章主要介绍了SpringMVC用XML方式实现AOP的方法示例,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧

1.首先创建web工程,之后导入Spring jar包,目录如下


2.文件代码

2.1AfterAdvice

package com.niit.aop;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;
/*
 * 后置通知
 * havingClass方法执行之后才执行。
 * 输出日记
 * */
public class AfterAdvice implements AfterReturningAdvice {

	@Override
	public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("后置拦截:下课之后写作业");
	}
}

2.2BeforeAdvice

package com.niit.aop;
import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
public class BeforeAdvice implements MethodBeforeAdvice {
/*
 * 前置通知
 * 在havingClass切入点方法执行之前通知
 * 用于验证用户的合法性。/判断一些数据是否存在。适用于检索。注册判断用户名是否存在。
 * */
	@Override
	public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("前面拦截:上课之前要点名!在调用havingClass方法之前调用");

	}
}

2.3StudentIntercepter

package com.niit.aop;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class StudentIntercepter implements MethodInterceptor {

	@Override
	public Object invoke(MethodInvocation method) throws Throwable {
		// TODO Auto-generated method stub
		if(method.getArguments().length>0) {
			String name=(String)method.getArguments()[0];
			if("hmq".equals(name)){
				System.out.println("中间拦截:你是hmq");
			}
			else {
				System.out.println("中间拦截:你是学生");
			}
			method.proceed();
		}
		return null;
	}
}

2.4StudentIF

package com.niit.logic;
public interface StudentIF {
	public void havingClass(String name);
	public void dohomework(String name);
	
}

2.5Student

package com.niit.logic;

public class Student implements StudentIF {

	//作为aop的目标方法
public void havingClass(String name) {
	System.out.println("aop的目标方法");
	System.out.println(name+"正在上课");
}
public void dohomework(String name) {
	System.out.println(name+"正在写作业");
}
}

2.6StudentLogic

package com.niit.logic;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class StudentLogic {
	public static void main(String[] args) {
		ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
		StudentIF s=(StudentIF)context.getBean("student");
		s.havingClass("hmq");
		System.out.println("---------------");
		s.dohomework("hmq");
		System.out.println("---------------");
		s.havingClass("abc");
		System.out.println("---------------");
		s.dohomework("abc");
		System.out.println("---------------");
		
	}

}

2.7applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p"
  xmlns:util="http://www.springframework.org/schema/util" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
  xmlns:cache="http://www.springframework.org/schema/cache"
  xsi:schemaLocation="
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context.xsd
  http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/tx
  http://www.springframework.org/schema/tx/spring-tx.xsd
  http://www.springframework.org/schema/jdbc
  http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
  http://www.springframework.org/schema/cache
  http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
  http://www.springframework.org/schema/aop
  http://www.springframework.org/schema/aop/spring-aop.xsd
  http://www.springframework.org/schema/util
  http://www.springframework.org/schema/util/spring-util.xsd">
  
  <!-- 自动扫描web包,将带有注解的类 纳入spring容器管理 -->
  <!-- <context:component-scan base-package="com.niit.beans">
  </context:component-scan> -->
  <!-- 定义通知 -->
  <bean id="BeforeAdvice" class="com.niit.aop.BeforeAdvice"></bean>
   <bean id="AfterAdvice" class="com.niit.aop.AfterAdvice"></bean>
 
  <!-- 定义拦截器 -->
  <bean id="StudentIntercepter" class="com.niit.aop.StudentIntercepter"> </bean>
  <!-- 定义目标 -->
<bean id="target" class="com.niit.logic.Student"></bean>
<!-- 切入点 哪些方法会被aop影响 可选 -->
<bean id="pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut">
<!-- 模式 -->
<property name="pattern" value=".*dohomework.*" >
</property>

</bean>
<!-- 通知器advisor 连接通知和切入点 可选-->
<bean id="advisor" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice" ref="BeforeAdvice"/>
<property name="pointcut" ref="pointcut"/>
</bean> 
<!-- 定义代理 -->
<bean id="student" class="org.springframework.aop.framework.ProxyFactoryBean">
<!-- 注入目标 -->
<property name="target" ref="target"></property>
<!-- 设置拦截器 -->
<property name="interceptorNames">
<list>
<value>BeforeAdvice</value>
<value>AfterAdvice</value>
<value>StudentIntercepter</value>
</list>
</property>
<!-- 定义代理接口 -->
<property name="proxyInterfaces" value="com.niit.logic.StudentIF"></property>

</bean>
</beans>

2.8SpringMVC.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"
  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
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd
    ">
    
    <!-- 包扫描:扫描注解所在的包controller类所在的包 -->
    <context:component-scan base-package="com.niit.controller"></context:component-scan>
     <context:component-scan base-package="com.niit.service" />
     <context:component-scan base-package="com.niit.dao" />
    <!-- 开启注解驱动AnnotationHandlerMapping -->
    <mvc:annotation-driven/>
  
  <!-- 配置视图解析器 -->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/view/"/>
    <property name="suffix" value=".jsp"/>
  </bean>
  <!--SimpleMappingExceptionResolver(异常类与 View 的对应关系) -->
  <bean
    class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
    <!-- 定义默认的异常处理页面,当该异常类型注册时使用 -->
    <property name="defaultErrorView" value="error"></property>
    <!-- 定义异常处理页面用来获取异常信息的变量名,默认名为exception -->
    <property name="exceptionAttribute" value="ex"></property>
    <!-- 定义需要特殊处理的异常,用类名或完全路径名作为key,异常页名作为值 -->
    <property name="exceptionMappings">
      <props>
        <prop key="exception.MyException">my-error</prop>
        <prop key="java.sql.SQLException">sql-error</prop>
        <prop key="exception.KeyWordNotFoundException">my-error</prop>
        <!-- 在这里还可以继续扩展对不同异常类型的处理 -->
      </props>
    </property>
  </bean>
   <!--托管MyExceptionHandler-->
  <!--<bean class="com.niit.exception.MyExceptionHandler"/> -->
</beans>

4效果图

到此这篇关于SpringMVC用XML方式实现AOP的方法示例的文章就介绍到这了,更多相关SpringMVC XML实现AOP内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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