Question

即使我通过AsyncTask在后台运行任务，我仍然会收到错误。

＆＃34; java.net.ProtocolException：在读取响应后无法写入请求体在com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream（HttpURLConnectionImpl.java:203）＆＃34;

指向＆＃34; os = urlConnection.getOutputStream（）;＆＃34;

private static void postJsonObject(URL url, JSONObject jsonObject) throws IOException {


    HttpURLConnection urlConnection = null;
    OutputStream os = null;
    BufferedWriter bw = null;

    int responseCode = -1;

    try {
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setRequestProperty("Content-Type", "application/json");
        urlConnection.setRequestMethod("POST");
        urlConnection.connect();

        responseCode = urlConnection.getResponseCode();
        Log.i("Personal", "HTTP URL CONNECTION Response Code: " + responseCode);

        os = urlConnection.getOutputStream();
        bw = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

        bw.write(jsonObject.toString());

        connectionSuccess = true;

    } catch (IOException e) {
        Log.e("Personal", "Problem sending the json string: ", e);
    } finally {
        if(urlConnection!=null){
            urlConnection.disconnect();
        }
        if(bw!=null){
            bw.close();
        }
        if (os!=null){
            os.close();
        }
    }

}

Answer 1

我已更新您的代码，请尝试此操作

try {
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setRequestProperty("Content-Type","application/json");
        urlConnection.setRequestMethod("POST");



        urlConnection.connect();
        os = urlConnection.getOutputStream();
        bw = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));

        bw.write(jsonObject.toString());

        connectionSuccess = true;
        responseCode = urlConnection.getResponseCode();
        Log.i("Personal", "HTTP URL CONNECTION Response Code: " + responseCode);



    } catch (IOException e) {
        Log.e("Personal", "Problem sending the json string: ", e);
    }

在Android中通过POST方法发送json但总是收到谐振代码400.服务器正常，任务如果在后台执行

1 个答案: