微信授权登录 不需要注册

public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {


HttpSession httpSession = request.getSession();


UserInfo userInfo = (UserInfo) httpSession
.getAttribute("1111");



if (userInfo != null) {
return true;
}


String code = request.getParameter("code");


System.out.println("code:" + code);


if (!("".equals(code)) && code != null) {
String openId = "";
String access_token = "";
String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="
+ WxPayConfig.appid
+ "&secret="
+ WxPayConfig.appsecret
+ "&code=" + code + "&grant_type=authorization_code";
JSONObject jsonObject = CommonUtil.httpsRequest(URL, "GET", null);
System.out.println(jsonObject.toString());
if (null != jsonObject && (openId == null || openId == "")) {
openId = jsonObject.getString("openid");
access_token = jsonObject.getString("access_token");
}

UserInfo userInfoByOpenid = new UserInfo();

if (userInfoByOpenid == null) {
String nickname = "";
String headimgurl = "";
String URL2 = "https://api.weixin.qq.com/sns/userinfo?access_token="
+ access_token + "&openid=" + openId + "&lang=zh_CN";
JSONObject jsonObject2 = CommonUtil.httpsRequest(URL2, "GET",
null);
System.out.println(jsonObject2.toString());
if (null != jsonObject2) {
nickname = jsonObject2.getString("nickname");
headimgurl = jsonObject2.getString("headimgurl");
}

}else {
if(userInfoByOpenid.getYuliu2()==""||userInfoByOpenid.getYuliu2()==null||userInfoByOpenid.getYuliu1()==null){
String nickname = "";
String headimgurl = "";
String URL2 = "https://api.weixin.qq.com/sns/userinfo?access_token="
+ access_token + "&openid=" + openId + "&lang=zh_CN";
JSONObject jsonObject2 = CommonUtil.httpsRequest(URL2, "GET",
null);
System.out.println(jsonObject2.toString());
if (null != jsonObject2) {
nickname = jsonObject2.getString("nickname");
headimgurl = jsonObject2.getString("headimgurl");
}
}
}
httpSession.setAttribute("userInfoSession", userInfoByOpenid);
} else {
String url = "https://open.weixin.qq.com/connect/oauth2/authorize?"
+ "appid="
+ WxPayConfig.appid
+ "&redirect_uri="
+ request.getRequestURL()
+ "&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";
// model.addAttribute("url",url);


response.sendRedirect(url);


return false;
}


return true;


}

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