微信小程序通过code获取电话号码phonenumber.getPhoneNumber

String code；
String appid;
String secret;
HttpResponse response = HttpRequest.get("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + secret + "").execute();
        JSONObject jsonObject = new JSONObject(response.body());
        if(!jsonObject.containsKey("access_token")){
            throw new BusinessException("获取微信令牌失败");
        }
        String accessToken = jsonObject.getStr("access_token");
        JSONObject jsonCode = new JSONObject();
        jsonCode.putOpt("code",code);
        String resPhone = HttpUtil.post("https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + accessToken, jsonCode.toString());
        if(StringUtil.isEmpty(resPhone)){
            throw new BusinessException("请求phone失败");
        }
        JSONObject phoneJson = new JSONObject(resPhone);
        JSONObject phoneObj = phoneJson.getJSONObject("phone_info");
        log.info("获取phone{}", resPhone);
        if(phoneObj == null){
            throw new BusinessException("获取phone失败");
        }
        String phoneNumber = phoneObj.getStr("phoneNumber");

首先要先去微信端接口带上appId和secret获取令牌，拿到令牌之后再去请求获取点好号码的接口，把令牌拼接在url，code需要放在请求体上，code为key，具体code为value，注意一定要是json格式的请求体不然会报格式异常，转json的包是用的huool的工具包