OKhttp Post

JSONObject jsonObject = new JSONObject();
        try {
            jsonObject.put("code",code);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        String jsonStr = jsonObject.toString();
        MediaType JSON = MediaType.parse("application/json; charset=utf-8");
        RequestBody body = RequestBody.create(JSON, jsonStr);
        String url = "http://api.freego.haitiand.cn/wechat/index";
        Request request = new Request
                .Builder()
                .url(url)
                .post(body)
                .build();
        OkHttpClient client = new OkHttpClient.Builder()
                .connectTimeout(10, TimeUnit.SECONDS)
                .readTimeout(10, TimeUnit.SECONDS)
                .writeTimeout(10, TimeUnit.SECONDS)
                .build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG,"报错信息 - - - > "+e.toString());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.i(TAG,"数据返回 - - - > "+response.body().string());
            }
        });