在写一个网页，需要微信授权的登录，前几次还会弹出微信授权，后面就直接没反应了

这是网页的首页

@RequestMapping("/add")
public String puclicIndex(HttpServletRequest request, HttpServletResponse response) throws IOException {
    weiXinController.getOpenid(request,response);
    return "forward:/news/index.html";
}

package com.videoSys.controller;

import com.videoSys.weixin.AuthAccessToken;
import com.videoSys.weixin.WXUserInfo;
import com.videoSys.weixin.WeiXinService;
import com.videoSys.weixin.WeiXinTool;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@Controller
public class WeiXinController extends BaseController {
    Logger logger = LoggerFactory.getLogger(WeiXinController.class);

    @Autowired
    private WeiXinService weiXinService;


    private WeiXinTool weiXinTool = new WeiXinTool();
    /**
     * 微信获取openid回调接口
     * @param code
     * @param state
     * @param request
     * @param session
     * @return
     */
    @RequestMapping("/getOpenid.htm")
    public String getOpenid(String code, String state, String refUrl, HttpServletRequest request, HttpSession session) {
        System.out.println("code="+code+"state:"+state+"refUrl:"+refUrl);
        System.out.println("request:"+request.toString());
        System.out.println("session:"+session.toString());
        if(WeiXinTool.isWX(request)){
            logger.info("微信浏览器");
            //微信浏览器
            if(StringUtils.isNotBlank(code) && StringUtils.isNotBlank(state)){
                logger.info("code,state不为空");
                //获取openid跳转回来的
                //有跳转链接和Code,获取openid
                if (getOpenid(request)==null) {
                    AuthAccessToken authAccessToken = this.weiXinService.getAuthAccessToken(code);
                    System.out.println("AuthAccessToken=="+authAccessToken.getAccessToken()+","+authAccessToken.getOpenid()+","+authAccessToken.getScope()+","+authAccessToken.getRefreshToken() );
                    if(authAccessToken != null){
                        String openid = authAccessToken.getOpenid();
                        session.setAttribute("openid", openid);
                        System.out.println("获取到openid并设置到session中。完成获取openid流程!\topenid:"+openid);
                        //获取到微信用户信息
                        WXUserInfo wxUserInfo = this.weiXinTool.getWXUserInfo(authAccessToken);
                        System.out.println("wxUserInfo=="+wxUserInfo.toString());
                        //将微信用户信息根据openid为key存到servletContext
                        System.out.println("openid="+openid+"wxUserInfo=="+wxUserInfo.toString());
                        ServletContext servletContext = request.getServletContext();
                        servletContext.setAttribute(openid, wxUserInfo);
                        System.out.println("servletContent:"+servletContext.getAttribute(openid));
                        logger.info("获取微信用户信息成功.将其根据openid为key，保存进application中。");
                        //获取跳转之前的url
                        if(refUrl != null) {
                            logger.info("跳转回之前链接。url："+refUrl);
                            return "redirect:"+refUrl;
                        }
                    }
                }
            }
        }
        return "";
    }

    /**
     * 检查是否微信浏览器,并且获取openid
     * @param request
     * @throws IOException
     */
    public String getOpenid(HttpServletRequest request, HttpServletResponse response) throws IOException {
        HttpSession session = request.getSession();
        if(getOpenid(request) != null) {
            //已经存在openid,直接退出
            return null;
        }
        if(!WeiXinTool.isWX(request)){
            //不是微信浏览器 直接退出
            return null;
        }
        //将当前的url存到session中
        StringBuffer currentUrl = request.getRequestURL();
        System.out.println("currentUrl:"+currentUrl.toString());
        String uri = request.getRequestURI();
        System.out.println("uri:"+uri.toString());
        String domain = currentUrl.substring(0,currentUrl.length()-uri.length());
        System.out.println("domain:"+domain);
        //调用微信获取openid
        String redirectUrl = weiXinService.getAuthRedirectUrl(domain+"/getOpenid.htm?refUrl="+currentUrl,WeiXinTool.SCOPE_SNS_API_USERINFO,"STATE");
        System.out.println("redirectUrl:"+redirectUrl);
        response.sendRedirect(redirectUrl);
        return "";
    }
}