OkHttp Post Body as JSON

问题

So, back when I was using Koush\'s Ion, I was able to add a json body to my posts with a simple .setJsonObjectBody(json).asJsonObject()

I\'m moving over to OkHttp, and I really don\'t see a good way to do that. I\'m getting error 400\'s all over the place.

Anyone have any ideas?

I\'ve even tried manually formatting it as a json string.

String reason = menuItem.getTitle().toString();
JsonObject json = new JsonObject();
json.addProperty(\"Reason\", reason);

String url = mBaseUrl + \"/\" + id + \"/report\";

Request request = new Request.Builder()
        .header(\"X-Client-Type\", \"Android\")
        .url(url)
        .post(RequestBody
                .create(MediaType
                    .parse(\"application/json\"),
                        \"{\\\"Reason\\\": \\\"\" + reason + \"\\\"}\"
                ))
        .build();

client.newCall(request).enqueue(new com.squareup.okhttp.Callback() {
    @Override
    public void onFailure(Request request, IOException throwable) {
        throwable.printStackTrace();
    }

    @Override
    public void onResponse(Response response) throws IOException {
        if (!response.isSuccessful()) throw new IOException(
                \"Unexpected code \" + response);
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(context, \"Report Received\", Toast.LENGTH_SHORT).show();
            }
        });
    }
});

/*Ion.with(getContext(), url)
        .setHeader(\"X-Client-Type\", \"Android\")
        .setJsonObjectBody(json)
        .asJsonObject()
        .setCallback(new FutureCallback<JsonObject>() {
            @Override
            public void onCompleted(Exception e, JsonObject result) {
                Toast.makeText(context, \"Report Received\", Toast.LENGTH_SHORT).show();
            }
        });*/

Edit: For anyone stumbling upon this question later, here is my solution that does everything asynchronously. The selected answer IS CORRECT, but my code is a bit different.

String reason = menuItem.getTitle().toString();
if (reason.equals(\"Copyright\"))
    reason = \"CopyrightInfringement\";
JsonObject json = new JsonObject();
json.addProperty(\"Reason\", reason);

String url = mBaseUrl + \"/\" + id + \"/report\";

String jsonString = json.toString();
RequestBody body = RequestBody.create(JSON, jsonString);

Request request = new Request.Builder()
    .header(\"X-Client-Type\", \"Android\")
    .url(url)
    .post(body)
    .build();

client.newCall(request).enqueue(new com.squareup.okhttp.Callback() {
    @Override
    public void onFailure(Request request, IOException throwable) {
        throwable.printStackTrace();
    }

    @Override
    public void onResponse(Response response) throws IOException {
        if (!response.isSuccessful()) throw new IOException(
            \"Unexpected code \" + response);
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(context, \"Report Received\", Toast.LENGTH_SHORT).show();
            }
        });
    }
});

/*Ion.with(getContext(), url)
    .setHeader(\"X-Client-Type\", \"Android\")
    .setJsonObjectBody(json)
    .asJsonObject()
    .setCallback(new FutureCallback<JsonObject>() {
        @Override
        public void onCompleted(Exception e, JsonObject result) {
            Toast.makeText(context, \"Report Received\", Toast.LENGTH_SHORT).show();
        }
    });*/

...

private void runOnUiThread(Runnable task) {
    new Handler(Looper.getMainLooper()).post(task);
}

A little more work, mainly because you have to get back to the UI thread to do any UI work, but you have the benefit of HTTPS just...working.

回答1:

Just use JSONObject.toString(); method. And have a look at OkHttp's tutorial:

public static final MediaType JSON
    = MediaType.parse("application/json; charset=utf-8");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(JSON, json);
  Request request = new Request.Builder()
      .url(url)
      .post(body)
      .build();
  Response response = client.newCall(request).execute();
  return response.body().string();
}

回答2:

Another approach is by using FormBody.Builder().
Here's an example of callback:

Callback loginCallback = new Callback() {
    @Override
    public void onFailure(Call call, IOException e) {
        try {
            Log.i(TAG, "login failed: " + call.execute().code());
        } catch (IOException e1) {
            e1.printStackTrace();
        }
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {
        // String loginResponseString = response.body().string();
        try {
            JSONObject responseObj = new JSONObject(response.body().string());
            Log.i(TAG, "responseObj: " + responseObj);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        // Log.i(TAG, "loginResponseString: " + loginResponseString);
    }
};

Then, we create our own body:

RequestBody formBody = new FormBody.Builder()
        .add("username", userName)
        .add("password", password)
        .add("customCredential", "")
        .add("isPersistent", "true")
        .add("setCookie", "true")
        .build();

OkHttpClient client = new OkHttpClient.Builder()
        .addInterceptor(this)
        .build();
Request request = new Request.Builder()
        .url(loginUrl)
        .post(formBody)
        .build();

Finally, we call the server:

client.newCall(request).enqueue(loginCallback);

回答3:

You can create your own JSONObject then toString().

Remember run it in the background thread like doInBackground in AsyncTask.

   // create your json here
   JSONObject jsonObject = new JSONObject();
   try {
       jsonObject.put("username", "yourEmail@com");
       jsonObject.put("password", "yourPassword");
       jsonObject.put("anyKey", "anyValue");

   } catch (JSONException e) {
       e.printStackTrace();
   }

  OkHttpClient client = new OkHttpClient();
  MediaType JSON = MediaType.parse("application/json; charset=utf-8");
  // put your json here
  RequestBody body = RequestBody.create(JSON, jsonObject.toString());
  Request request = new Request.Builder()
                    .url("https://yourUrl/")
                    .post(body)
                    .build();

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

来源：https://stackoverflow.com/questions/34179922/okhttp-post-body-as-json