MalformedURLException:？

Question

我们使用异步任务进行服务调用，这个服务是由第三方调用的，我需要调用并获取json数据，然后根据需要移动其他东西，因此我使用了以下代码。

private class FetchJsonData extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        // These two need to be declared outside the try/catch
        // so that they can be closed in the finally block.
        HttpURLConnection urlConnection = null;
        BufferedReader reader = null;

        // Will contain the raw JSON response as a string.
        String forecastJsonStr = null;

        try {
            // Construct the URL for the OpenWeatherMap query
            // Possible parameters are avaiable at OWM's forecast API page, at
            // http://openweathermap.org/API#forecast


            URL url = new URL("android-app://ir.com.irremote.ir.com.irremote.activity/http/" + "api.abc.com/TVlistings/v9/listings/services/postalcode/37215/info?locale=en-US&countrycode=US&format=json&apikey=abc");
            urlConnection = (HttpURLConnection) url.openConnection();
            // Create the request to OpenWeatherMap, and open the connection
            urlConnection.setRequestMethod("GET");
            urlConnection.connect();
            urlConnection.setDoOutput(true);
            urlConnection.setDoInput(true);
            // Read the input stream into a String
            InputStream inputStream = urlConnection.getInputStream();
            StringBuffer buffer = new StringBuffer();
            if (inputStream == null) {
                // Nothing to do.
                return null;
            }
            reader = new BufferedReader(new InputStreamReader(inputStream));

            String line;
            while ((line = reader.readLine()) != null) {
                // Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
                // But it does make debugging a *lot* easier if you print out the completed
                // buffer for debugging.
                buffer.append(line + "\n");
            }

            if (buffer.length() == 0) {
                // Stream was empty.  No point in parsing.
                return null;
            }
            forecastJsonStr = buffer.toString();
            return forecastJsonStr;
        } catch (IOException e) {
            Log.e("PlaceholderFragment", "Error ", e);
            // If the code didn't successfully get the weather data, there's no point in attemping
            // to parse it.
            return null;
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
            if (reader != null) {
                try {
                    reader.close();
                } catch (final IOException e) {
                    Log.e("PlaceholderFragment", "Error closing stream", e);
                }
            }
        }
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);

        Log.i("json", "" + s);
    }
}

在那之后，我执行了onCreate()，但是它给了我一些例外，我不知道它为什么会出现，.i在这里放置日志，请看这个：

致命异常:主进程: ir.dumadu.com.irremote，PID: 20759 java.lang.RuntimeException:无法停止活动java.lang.IllegalArgumentException: AppIndex: URI主机必须匹配包名并遵循格式(android:/ host _path)。提供URI: android-app://ir.dumadu.com.irremote.ir.dumadu.com.irremote.activity/http/host/path at android.app.ActivityThread.handleSleeping(ActivityThread.java:4679)在android.app.ActivityThread.access$3400(ActivityThread.java:211) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1934) at android.os.Handler。android.app.ActivityThread.main(ActivityThread.java:6946) dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145)在java.lang.reflect.Method.invoke(Method.java:372)的java.lang.reflect.Method.invoke(原生方法)在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)由: java.lang.IllegalArgumentException: AppIndex引起: URI主机必须匹配包名并遵循格式(android:/AppIndex_path)。提供的URI: android-app://ir.dumadu.com.irremote.ir.dumadu.com.irremote.activity/http/host/path at com.google.android.gms.internal.zzju.zzb(Unknown Source)(在com.google.android.gms.internal.zzju.zza(Unknown来源)在com.google.android.gms.internal.zzjt.zza(Unknown来源)(在com.google.android.gms.internal.zzju.zza(Unknown来源)在com.google.android.gms.internal.zzju.end(Unknown来源)在ir.dumadu.com.irremote.ir.dumadu.com.irremote.activity.ChoseTransmitter.onStop(ChoseTransmitter.java:169) at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1305) at androidandroid.app.ActivityThread.handleSleeping(ActivityThread.java:4676) at android.app.ActivityThread.access$3400(ActivityThread.java:211的.app.Activity.performStop(Activity.java:6777))在android.app.ActivityThread$H.handleMessage(ActivityThread.java:1934)(android.os.Handler.dispatchMessage(Handler.java:102))在android.app.ActivityThread.main(ActivityThread.java:6946)的android.os.Looper.loop(Looper.java:145)在java.lang.reflect.Method.invoke(本地方法) 在这里，无论我使用这个url，也就是我的后端url。这个网址给了我们一些服务，provider.when，我在网络浏览器中点击这个网址，然后当我通过移动应用程序打电话给我时，它给了我json格式的data.but，它给了我上面的log.if，人们在这方面发现了任何错误，或者我需要做一些其他的方式，你一定要回答我。提前谢谢。

Answer 1

private class FetchJsonData extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        // These two need to be declared outside the try/catch
        // so that they can be closed in the finally block.
        HttpURLConnection urlConnection = null;
        BufferedReader reader = null;

        // Will contain the raw JSON response as a string.
        String forecastJsonStr = null;

        try {
            // Construct the URL for the OpenWeatherMap query
            // Possible parameters are avaiable at OWM's forecast API page, at


            String urls="http://" + "api.abc.com/TVlistings/v9/listings/services/postalcode/37215/info?locale=en-US&countrycode=US&format=json&apikey=abc";
            URL url = new URL(urls);
            urlConnection = (HttpURLConnection) url.openConnection();
            // Create the request to OpenWeatherMap, and open the connection
            urlConnection.setRequestMethod("GET");
            urlConnection.connect();
           //urlConnection.setDoOutput(true);
            //urlConnection.setDoInput(true);
            // Read the input stream into a String
            InputStream inputStream = urlConnection.getInputStream();
            StringBuffer buffer = new StringBuffer();
            if (inputStream == null) {
                // Nothing to do.
                return null;
            }
            reader = new BufferedReader(new InputStreamReader(inputStream));

            String line;
            while ((line = reader.readLine()) != null) {
                // Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
                // But it does make debugging a *lot* easier if you print out the completed
                // buffer for debugging.
                buffer.append(line + "\n");
            }

            if (buffer.length() == 0) {
                // Stream was empty.  No point in parsing.
                return null;
            }
            forecastJsonStr = buffer.toString();
            return forecastJsonStr;
        } catch (IOException e) {
            Log.e("PlaceholderFragment", "Error ", e);
            // If the code didn't successfully get the weather data, there's no point in attemping
            // to parse it.
            return null;
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
            if (reader != null) {
                try {
                    reader.close();
                } catch (final IOException e) {
                    Log.e("PlaceholderFragment", "Error closing stream", e);
                }
            }
        }
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);

        Log.i("json", "" + s);
    }
}

现在是工作了。