用于将连续值发送到服务器的线程

分类：编程问答

如何解决用于将连续值发送到服务器的线程

| 我正在使用本教程。我添加了以下代码，以将我的值连续发送到服务器，但是它不起作用。谢谢 
 public class MyService extends Service {
    private static final String TAG = \"MyService\";
    protected static Boolean c = true;
    ServicesDemo sd = new ServicesDemo();

    private Timer timer = new Timer();



    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        Toast.makeText(this,\"My Service Created\",Toast.LENGTH_LONG).show();
        Log.d(TAG,\"onCreate\");
        startservice();
    }

    @Override
    public void onDestroy() {
        Toast.makeText(this,\"My Service Stopped\",\"onDestroy\");


    }

    @Override
    public void onStart(Intent intent,int startid) {
        Toast.makeText(this,\"My Service Started\",\"onStart\");
         c=true;

                }




private void startservice() {

    timer.scheduleAtFixedRate( new TimerTask() {

    public void run() {

         try {


             String data = URLEncoder.encode(\"key1\",\"UTF-8\") + \"=\" + URLEncoder.encode(\"value1\",\"UTF-8\");
             data += \"&\" + URLEncoder.encode(\"key2\",\"UTF-8\") + \"=\" + URLEncoder.encode(\"value2\",\"UTF-8\");


             //Toast.makeText(MyService.this,\"Latitude is = \"+la+\"Longitude is = \"+longi,Toast.LENGTH_SHORT).show();
             URL url = new URL(\"http://mediasense4.appspot.com/add.jsp?lat=\"+(int) (Math.random() * 45)+\"&longi=\"+(int) (Math.random() * 45)+\"&personid=\"+2+\"&status=\"+3+\"&name=\"+5+\"\");

             //URL url = new URL(\"http://mediasense4.appspot.com/add.jsp?lat=\"+241+\"&longi=\"+654+\"\");

                    URLConnection conn = url.openConnection();
                    conn.setDoOutput(true);
                    OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
                    wr.write(data);
                    wr.flush();
                    BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream(),\"UTF-8\"));
                                        String line = null;
                                        String response = \"\";
                                        while ((line = rd.readLine()) != null) {
                                           response += line;

                                        }

                                        wr.close();
                                        rd.close();



                            }
                            catch (Exception e) {
                                //e.printStackTrace();
                            }


    }

    },5000);

    ; }}
当我单击开始按钮时，logcat出现以下错误 
05-24 21:18:56.347: DEBUG/dalvikvm(5070): GC freed 8615 objects / 520600 bytes in 87ms
05-24 21:18:56.487: DEBUG/dalvikvm(491): GC freed 267 objects / 13280 bytes in 107ms
05-24 21:18:56.927: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=10&longi=34&personid=2&status=3&name=5
05-24 21:18:56.927: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:18:56.927: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:18:56.937: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:18:57.597: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=39&longi=16&personid=2&status=3&name=5
05-24 21:18:57.597: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:18:57.597: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:18:57.597: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:18:58.557: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=3&longi=18&personid=2&status=3&name=5
05-24 21:18:58.557: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:18:58.557: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:18:58.557: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:18:59.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=15&longi=38&personid=2&status=3&name=5
05-24 21:18:59.587: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:18:59.587: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:18:59.587: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:00.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=8&longi=17&personid=2&status=3&name=5
05-24 21:19:00.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:00.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:00.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:01.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=40&longi=36&personid=2&status=3&name=5
05-24 21:19:01.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:01.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:01.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:02.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=32&longi=4&personid=2&status=3&name=5
05-24 21:19:02.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:02.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:02.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:03.677: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=18&longi=36&personid=2&status=3&name=5
05-24 21:19:03.687: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:03.687: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:03.687: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:04.827: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=18&longi=4&personid=2&status=3&name=5
05-24 21:19:04.827: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:04.837: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:04.837: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:05.287: DEBUG/dalvikvm(475): GC freed 101 objects / 5376 bytes in 159ms
05-24 21:19:05.597: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=44&longi=44&personid=2&status=3&name=5
05-24 21:19:05.597: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:05.597: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:05.597: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:06.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=23&longi=44&personid=2&status=3&name=5
05-24 21:19:06.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:06.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:06.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:07.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=2&longi=16&personid=2&status=3&name=5
05-24 21:19:07.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:07.587: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:07.587: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:08.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=1&longi=3&personid=2&status=3&name=5
05-24 21:19:08.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:08.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:08.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:09.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=5&longi=31&personid=2&status=3&name=5
05-24 21:19:09.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:09.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:09.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:10.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=39&longi=10&personid=2&status=3&name=5
05-24 21:19:10.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:10.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:10.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:11.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=37&longi=23&personid=2&status=3&name=5
05-24 21:19:11.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:11.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:11.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:12.407: DEBUG/dalvikvm(5070): GC freed 8568 objects / 514384 bytes in 91ms
05-24 21:19:12.667: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=36&longi=29&personid=2&status=3&name=5
05-24 21:19:12.667: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:12.667: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:12.667: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:13.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=23&longi=6&personid=2&status=3&name=5
05-24 21:19:13.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:13.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:13.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:14.637: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=37&longi=31&personid=2&status=3&name=5
05-24 21:19:14.637: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:14.637: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:14.637: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:15.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=7&longi=19&personid=2&status=3&name=5
05-24 21:19:15.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:15.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:15.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:16.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=10&longi=2&personid=2&status=3&name=5
05-24 21:19:16.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:16.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:16.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:17.557: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=39&longi=4&personid=2&status=3&name=5
05-24 21:19:17.557: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:17.557: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:17.557: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:18.557: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=2&longi=15&personid=2&status=3&name=5
05-24 21:19:18.557: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:18.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:18.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:19.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=22&longi=33&personid=2&status=3&name=5
05-24 21:19:19.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:19.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:19.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:20.557: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=22&longi=37&personid=2&status=3&name=5
05-24 21:19:20.557: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:20.557: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:20.557: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:21.657: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=3&longi=8&personid=2&status=3&name=5
05-24 21:19:21.657: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:21.657: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:21.657: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:22.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=0&longi=13&personid=2&status=3&name=5
05-24 21:19:22.577: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:22.577: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:22.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:23.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=4&longi=22&personid=2&status=3&name=5
05-24 21:19:23.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:23.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:23.577: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:24.587: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=34&longi=12&personid=2&status=3&name=5
05-24 21:19:24.587: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:24.587: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:24.587: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:25.597: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=28&longi=18&personid=2&status=3&name=5
05-24 21:19:25.597: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:25.597: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:25.597: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:26.557: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=7&longi=2&personid=2&status=3&name=5
05-24 21:19:26.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:26.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:26.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:27.567: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=6&longi=12&personid=2&status=3&name=5
05-24 21:19:27.567: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:27.567: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:27.567: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:28.777: DEBUG/dalvikvm(5070): GC freed 8824 objects / 524672 bytes in 90ms
05-24 21:19:28.787: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=38&longi=33&personid=2&status=3&name=5
05-24 21:19:28.797: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:28.797: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:28.797: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:29.717: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=39&longi=30&personid=2&status=3&name=5
05-24 21:19:29.717: WARN/System.err(5070):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1061)
05-24 21:19:29.717: WARN/System.err(5070):     at com.example.MyService$1.run(MyService.java:82)
05-24 21:19:29.717: WARN/System.err(5070):     at java.util.Timer$TimerImpl.run(Timer.java:290)
05-24 21:19:30.577: WARN/System.err(5070): java.io.FileNotFoundException: http://mediasense4.appspot.com/add.jsp?lat=4&longi=4&personid=2&status=3&name=5
    

解决方法

在睡眠中启动具有无限循环的服务来计划重复执行的任务不是很好。由于服务（默认情况下）是在UI线程上启动的，因此此行为可能导致UI响应能力较差。最好考虑以下情形之一： 您可以尝试使用Timer.scheduleAtFixedRate。 您可以使用ScheduledThreadPoolExecutor.scheduleAtFixedRate或ScheduledThreadPoolExecutor.scheduleWithFixedDelay 您可以使用Looper创建自己的线程以实现带有消息队列的无限线程，将Handler绑定到该线程，然后将其用于postDelayed 国际海事组织第二个是最可取的。     ,从您的代码中，您仅调用一次写入，因此将仅发出一个请求。并且即使您正在服务中执行一次网络操作，也建议使用线程。 onStart方法在主线程上运行，并且如果网络操作花费很长时间，则将引发Application Not Responding（ANR）错误。 在此博客中了解线程概念。     ,您手动呼叫的网址返回500服务器错误。看来您的问题可能出在服务器端？     

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