spring的interceptors进行参数判断

spring的interceptors功能很强大,主要是进行安全管理,做一个判断参数的小例子,抛砖引玉吧

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

/**
 *
 * @author xing
 */
public class AccessInterceptor  extends HandlerInterceptorAdapter
{
   
    /** Creates a new instance of AccessInterceptor */
    public AccessInterceptor()
    {
    }
    public boolean preHandle(
            HttpServletRequest request,
            HttpServletResponse response,
            Object handler)
    throws Exception {
     
        if (!request.getParameter("method").equals("")) {
            return true;
        } else {
            response.sendRedirect("");
            return false;
        }
    }   
}

配置文件

          class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">           
       
           
               
           
       

           class="test.AccessInterceptor">
        127.0.0.1
        10.1.0.246
   
  判断如果method为空,跳回根目录首页  ,也可以判断用户session,查看用户登陆没有,类似过滤器