get请求，异步

        OkHttpClient okHttpClient = new OkHttpClient();
        Request request = new Request.Builder().url("http://192.168.0.101/write/index/test").get().build();
        Call call = okHttpClient.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.d("aaa", "失败");
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.d("aaa", response.body().string());
            }
        });

post带参数

                OkHttpClient okHttpClient = new OkHttpClient();

                RequestBody requestBody = new FormBody.Builder().add("group_id", "8").build();

                Request request = new Request.Builder().url("http://192.168.0.101/write/index/test2").post(requestBody).build();
                Call call = okHttpClient.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        Log.d("aaa", "失败");
                    }

                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        Log.d("aaa", response.body().string());
                    }
                });
            }