springMVC中多个拦截器Interceptor的执行顺序

╰+哭是因爲堅強的太久メ 2022-07-26 12:16 209阅读 0赞

1.springMVC中拦截器实现这个接口implements HandlerInterceptor

第一个拦截器：

public class MyInterceptor1 implements HandlerInterceptor{
    
     public void afterCompletion(HttpServletRequest arg0,
       HttpServletResponse arg1, Object arg2, Exception arg3)
       throws Exception {
      System.out.println("=======> my interceptor1 :afterCompletion() ");
     }
    
     public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
       Object arg2, ModelAndView arg3) throws Exception {
      // TODO Auto-generated method stub
      System.out.println("=======> my interceptor1:postHandle() ");
     }
    
     public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
       Object arg2) throws Exception {
      System.out.println("=======> my interceptor1:preHandle() ");
      return true;
     }
    
    }

第二个拦截器：

public class MyInterceptor2 implements HandlerInterceptor{
    
    	public void afterCompletion(HttpServletRequest arg0,
    			HttpServletResponse arg1, Object arg2, Exception arg3)
    			throws Exception {
    		System.out.println("=======> my interceptor2:afterCompletion() ");
    	}
    
    	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
    			Object arg2, ModelAndView arg3) throws Exception {
    		// TODO Auto-generated method stub
    		System.out.println("=======> my interceptor2:postHandle() ");
    	}
    
    	public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
    			Object arg2) throws Exception {
    		System.out.println("=======> my interceptor2:preHandle()");
    		return true;
    	}

}

2.在springmvc的配置文件中

<mvc:interceptors>
    			<mvc:interceptor>
    				<mvc:mapping path="/**"/>
    				<bean class="com.lifeng.interceptor.MyInterceptor1" />
    			</mvc:interceptor>
    			
    			<mvc:interceptor>
    				<mvc:mapping path="/**"/>
    				<bean class="com.lifeng.interceptor.MyInterceptor2" />
    			</mvc:interceptor>
    			
    					</mvc:interceptors>

3.执行顺序：

=======> my interceptor1:preHandle()  
 =======> my interceptor2:preHandle()  
 .......  
 =======> my interceptor2:postHandle()  
 =======> my interceptor1:postHandle()  
 =======> my interceptor2:afterCompletion()  
 =======> my interceptor1 :afterCompletion()

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