okhttp3中的post请求问题

大神看一下，我这个POST请求那里错了，直接说出来。谢谢大神

    String username = usernameEdit.getText().toString();
                String password = passwordEdit.getText().toString();
                OkHttpClient client = new OkHttpClient();
                RequestBody requestBody = new FormBody.Builder()
                        .add("username", username)
                        .add("password", password)
                        .build();
                Request request = new Request.Builder()
                        .url("http://test.ourwechat.com/test/auth.php")
                        .post(requestBody)
                        .build();
                try {

                    Response response =client.newCall(request).execute();
                    response.body().string();
                } catch (IOException e) {
                    e.printStackTrace();
                }

调用方法没问题，你打印的错误信息是什么

   String username = usernameEdit.getText().toString();
                String password = passwordEdit.getText().toString();
                OkHttpClient client = new OkHttpClient();
                RequestBody requestBody = new FormBody.Builder()
                        .add("username", username)
                        .add("password", password)
                        .build();
                Request request = new Request.Builder()
                        .url("http://test.ourwechat.com/test/auth.php")
                        .post(requestBody)
                        .build();
                try {

                    Response response =client.newCall(request).execute();
                    response.body().string();
                } catch (IOException e) {
                    e.printStackTrace();