<mvc:interceptors>        <mvc:interceptor>            <mvc:mapping path="/**"/>            <bean id="buttonInterceptor" class="sls.interceptor.buttonInterceptor"/>        </mvc:interceptor>    </mvc:interceptors> 

import java.util.List;import java.util.logging.Logger;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import sls.system.vo.UserInfoVo;/** * 按钮权限控制 拦截 * @author Administrator * */public class buttonInterceptor extends HandlerInterceptorAdapter {    private static final String[] IGNORE_URI = {"/download"};    private Logger log = Logger.getLogger(this.getClass().getName());    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {         boolean flag = false;         response.reset();         String url = request.getRequestURL().toString();         String parameter = request.getParameter("parameter");         log.info(">>>: " + url);         boolean ret=false;         if (url.contains("button") && parameter!=null){             log.info("访问路径包含在button集合中被拦截");             UserInfoVo userInfoVo =(UserInfoVo) request.getSession().getAttribute("userInfoVo");             String  authorityButtons =userInfoVo.getAuthorityButton();             if(authorityButtons!=null){                 String[] authorityButton =authorityButtons.split(",");                 for (String string : authorityButton) {                     //log.info(string);                     if(string.equals(parameter)){                          log.info("有权限"+parameter);                         ret= true;                     }                }             }             if(!ret){                  java.io.PrintWriter out = response.getWriter();                 out.println(false);                 out.flush();                 out.close();             }         }else{             ret =true;         }         return ret;    }        @Override    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {        super.postHandle(request, response, handler, modelAndView);    }                                    }

function downloadProductInfo(){		$.post("jurisdiction/button.action?parameter=downloadProductInfo",function (e){			if(e.indexOf("false")!=-1){				alert("您没有操作此按钮的权限")			}else{				$("#searchForm").attr("action","basicData/downloadProductInfo.action");				$("#searchForm").submit();				}		})	}

/**	 * 按钮权限控制公共方法	 * @return	 */	@RequestMapping("button")	@ResponseBody 	public String  button(){		System.out.println("按钮权限控制公共方法访问成功");		return "";	}