SpringMVC下的权限控制（2）

SpringMVC下的权限控制（2）

利用拦截器对spring的controller进行了拦截，实现代码如下：

<? 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:aop ="http://www.springframework.org/schema/aop"  
    xmlns:p ="http://www.springframework.org/schema/p"
    xmlns:context ="http://www.springframework.org/schema/context"
    xsi:schemaLocation ="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-2.5.xsd" >
     < context:component-scan  base-package ="com.example"   />
     < bean  id ="handlerMappingTemplate"  abstract ="true" >
         < property  name ="interceptors" >
             < list >
                 < bean  class ="com.example.aspect.LoginCheckInterceptor"   />
             </ list >
         </ property >
     </ bean >
     < bean  class ="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"  parent ="handlerMappingTemplate"   />
     < bean  class ="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"  parent ="handlerMappingTemplate"   />
     < bean  class ="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"   />
     < bean  class ="org.springframework.web.servlet.view.InternalResourceViewResolver"  p:prefix ="/app/"  p:suffix =".jsp"   />
</ beans >

具体的java类代码也比较简单

package  com.example.aspect;

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

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


public   class  LoginCheckInterceptor  extends  HandlerInterceptorAdapter {

    @Override
     public   boolean  preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)  throws  Exception {
        
        System.out.println( " \n\n\n\n\n " + request);
         throw   new  Exception( " 用户没有该操作的权限！ " );
    }
    

}