1. 前端获取动态令牌 code

https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/getPhoneNumber.html

2. 后端接收令牌code, 调用微信获取手机号接口

POST https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=ACCESS_TOKEN

3. controller

    /*** 获取用户手机号** @param code  动态令牌。可通过动态令牌换取用户手机号*              注：getPhoneNumber 返回的 code 与 wx.login 返回的 code 作用是不一样的，不能混用* @return*/@ApiOperation("获取用户手机号")@GetMapping("/getPhoneNumber")public AjaxResult getPhoneNumber(String code){return lsUserService.getPhoneNumber(code);}

4. service

    /***  获取用户手机号** @param code  手机号获取凭证* @return*/@Overridepublic AjaxResult getPhoneNumber(String code) {if (StringUtils.isEmpty(code)) {return AjaxResult.error("手机号获取凭证不能为空 !");}log.info("手机号获取凭证: {}", code);try {//通过appid和secret来获取tokenString tokenUrl = String.format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s", WxPayUtils.appId, WxPayUtils.appSecret);JSONObject token = JSON.parseObject(HttpUtil.get(tokenUrl));//通过token和code来获取用户手机号String url = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + token.getString("access_token");//封装请求体Map<String, String> paramMap = new HashMap<>();paramMap.put("code", code);//封装请求头HttpHeaders headers = new HttpHeaders();headers.setContentType(MediaType.APPLICATION_JSON);HttpEntity<Map<String, String>> httpEntity = new HttpEntity<>(paramMap,headers);//通过RestTemplate发送请求，获取到用户手机号码RestTemplate restTemplate = new RestTemplate();ResponseEntity<JSONObject> response = restTemplate.postForEntity(url, httpEntity, JSONObject.class);String errmsg = response.getBody().getString("errmsg");if (errmsg.equals("ok")) {JSONObject phoneInfoJson = response.getBody().getJSONObject("phone_info");String phoneNumber = phoneInfoJson.getString("phoneNumber");return AjaxResult.success(phoneNumber);}} catch (Exception e) {e.printStackTrace();}return AjaxResult.error("手机号获取失败");}