微信扫码登入

首先去通过微信开放平台做好开发者资质认证，创建网站应用然后等待审核

开发者资质认证

网站应用

审核通过的话就是这个样子 还有最底下的授权回调地址 (/connect/qrconnect?appid=xxxx&redirect_uri=xxxxxx&response_type=code&scope=snsapi_login&state=e97555458779708b99b9d40cb49f54245c7500e536445d32#wechat_redirect

appid 是你网站应用里面的 redirect_uri 你设置的授权回调地址 scope网站扫码登入为snsapi_login即可 state。微信开放平台文档文档写的很详细，看不懂看文档

用户扫码成功之后微信会回调你设置的回调地址 获取二维码连接

/** * 回调地址 * @param code * @param state * @return */ @RequestMapping(value = "/wxCallBack",method = RequestMethod.POST) public Message wxCallBack(HttpServletRequest request, HttpServletResponse response, @RequestParam(name = "code",defaultValue = "") String code, @RequestParam(name = "state",defaultValue = "")String state) { if(StringUtils.isBlank(code)){ return new Message(ResponseEnum.ESSENTIAL_IS_NULL); } if(StringUtils.isBlank(state)){ return new Message(ResponseEnum.ESSENTIAL_IS_NULL); } logger.info("微信回调------------"); logger.info(code+"------"+state); try { Message message=weChatService.wxCallBack(request,code, state); return message; }catch (Exception e){ logger.error(e.toString()+"\n"+e); return new Message(ResponseEnum.FALL); } }@Override public Message wxCallBack(HttpServletRequest request, String code, String state) { String openId = null; if (code != null) { // 获取 openid try { WxMpOAuth2AccessToken accessToken = wxMpService.oauth2getAccessToken(code); if (accessToken == null) { return new Message(ResponseEnum.DATA_IS_NULL); } openId = accessToken.getOpenId(); log.info("openId:" + openId); WxMpUser wxUser = wxMpService.oauth2getUserInfo(accessToken, null); log.info(wxUser.toString()); return new Message(ResponseEnum.WECHAT_NOT_BINGDING, wxUser); } catch (WxErrorException e) { log.error(e.getMessage(), e); return new Message(ResponseEnum.FALL); } } return new Message(ResponseEnum.FALL); }

前端请求

$("#weiLog").click(function () { $.ajax({ type: "POST", url: "/api/wx/getQRCodeUrl", dataType: 'json', success: function (result) { //console.log(result); if(result.code==0){ this.itop = (window.screen.availHeight - 500) / 2; //获得窗口的水平位置 this.ileft = (window.screen.availWidth - 400) / 2; this.w = window.open( result.data, "newwindow", "height=500, width=600, top=" + this.itop + ", left = " + this.ileft + ", toolbar=no, menubar=no,scrollbars=no, resizable=no,location=no, status=no" ); } } }); });

总结

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