Spring aop拦截器实现

最新推荐文章于 2022-05-15 14:28:16 发布

qq_41670017

最新推荐文章于 2022-05-15 14:28:16 发布

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分类专栏： aop拦截器实现文章标签： spring

本文链接：https://blog.youkuaiyun.com/qq_41670017/article/details/89252599

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import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;


public class MyInterceptor1 extends HandlerInterceptorAdapter {

	
	
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		System.out.println("=-------------------preHandle1");
		return true;
	}

	
	@Override
	public void postHandle(
			HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)
			throws Exception {
		
		System.out.println("=-------------------postHandle1");

	
		
	}
	
	
	
	

	@Override
	public void afterCompletion(
			HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		
		
		System.out.println("=-------------------afterCompletion1");

		
		
		
	}
	
	@Override
	public void afterConcurrentHandlingStarted(
			HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		
		System.out.println("=-------------------afterConcurrentHandlingStarted1");

	}
	
	
	
}
public class MyInterceptor2 extends HandlerInterceptorAdapter {

	
	
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		System.out.println("=-------------------preHandle2");
		return true;
	}

	
	@Override
	public void postHandle(
			HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)
			throws Exception {
		
		System.out.println("=-------------------postHandle2");

	
		
	}
	
	
	
	

	@Override
	public void afterCompletion(
			HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		
		
		System.out.println("=-------------------afterCompletion2");

		
		
		
	}
	
	@Override
	public void afterConcurrentHandlingStarted(
			HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		
		System.out.println("=-------------------afterConcurrentHandlingStarted2");

	}
	
	
	
}

<mvc:interceptors> 
    	 <mvc:interceptor>  
            <mvc:mapping path="/**"/>  
            <bean class="****MyInterceptor1" autowire="byName"/>  
        </mvc:interceptor>  
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="  ** Interceptor.MyInterceptor2" ></bean>
        </mvc:interceptor>
    </mvc:interceptors>



一 正常调用是打印语句为
System.out.println("=-------------------preHandle1");
System.out.println("=-------------------preHandle2");
System.out.println("=-------------------postHandle2");
System.out.println("=-------------------postHandle1");
System.out.println("=-------------------afterCompletion2");
System.out.println("=-------------------afterCompletion1");

二 如果一步调用（多线程调用）
System.out.println("=-------------------preHandle1");
System.out.println("=-------------------preHandle2");
System.out.println("=-------------------afterConcurrentHandlingStarted2");
System.out.println("=-------------------afterConcurrentHandlingStarted1");

//新开线程重新处理
System.out.println("=-------------------preHandle1");
System.out.println("=-------------------preHandle2");
System.out.println("=-------------------postHandle2");
System.out.println("=-------------------postHandle1");
System.out.println("=-------------------afterCompletion2");
System.out.println("=-------------------afterCompletion1");

文章参考：https://segmentfault.com/a/1190000011688306