Java.net.SocketException：sendto失败：ECONNRESET（对等方重置连接）

Question

Java.net.SocketException：sendto失败：ECONNRESET（对等方重置连接）

3

我尝试使用这段代码连接服务器并上传图片。

    try {
        url = new URL(requestURL);

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("connection", "close");
        System.setProperty("http.keepAlive", "false");
        conn.setReadTimeout(15000);
        conn.setConnectTimeout(15000);
        conn.setRequestMethod("POST");
        conn.setDoInput(true);
        conn.setDoOutput(true);

        OutputStream os = conn.getOutputStream();
        BufferedWriter writer = new BufferedWriter(
                new OutputStreamWriter(os, "UTF-8"));
        writer.write(getPostDataString(postDataParams));

        writer.flush();
        writer.close();
        os.close();
        int responseCode = conn.getResponseCode();

        if (responseCode == HttpsURLConnection.HTTP_OK) {
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            sb = new StringBuilder();
            String response;
            while ((response = br.readLine()) != null){
                sb.append(response);
            }
        }
    } catch (IOException e){
        if (e.getMessage().indexOf("Connection reset by peer") > 0);
    } catch (Exception e) {
        e.printStackTrace();
    }

我总是会遇到像上面那样的SocketException异常。

04-26 18:53:26.091 13039-13092/kovacsdev.hu.facec W/System.err: java.net.SocketException: sendto failed: ECONNRESET (Connection reset by peer)
04-26 18:53:26.092 13039-13039/kovacsdev.hu.facec I/SurfaceTextureClient: [STC::queueBuffer] (this:0x53cf5360) fps:45.86, dur:1002.96, max:57.77, min:1.67
04-26 18:53:26.095 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.IoBridge.maybeThrowAfterSendto(IoBridge.java:550)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.IoBridge.sendto(IoBridge.java:519)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at java.net.PlainSocketImpl.write(PlainSocketImpl.java:511)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at java.net.PlainSocketImpl.access$100(PlainSocketImpl.java:46)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at java.net.PlainSocketImpl$PlainSocketOutputStream.write(PlainSocketImpl.java:269)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java:231)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.net.http.RetryableOutputStream.writeToSocket(RetryableOutputStream.java:70)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:814)
04-26 18:53:26.096 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:293)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:505)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at kovacsdev.hu.facec.RequestHandler.sendPostRequest(RequestHandler.java:43)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at kovacsdev.hu.facec.UploadUI$1UploadImage.doInBackground(UploadUI.java:108)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at kovacsdev.hu.facec.UploadUI$1UploadImage.doInBackground(UploadUI.java:82)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
04-26 18:53:26.097 13039-13092/kovacsdev.hu.facec W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
04-26 18:53:26.098 13039-13092/kovacsdev.hu.facec W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
04-26 18:53:26.098 13039-13092/kovacsdev.hu.facec W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
04-26 18:53:26.098 13039-13092/kovacsdev.hu.facec W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
04-26 18:53:26.098 13039-13092/kovacsdev.hu.facec W/System.err:     at java.lang.Thread.run(Thread.java:838)
04-26 18:53:26.098 13039-13092/kovacsdev.hu.facec W/System.err: Caused by: libcore.io.ErrnoException: sendto failed: ECONNRESET (Connection reset by peer)
04-26 18:53:26.099 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.Posix.sendtoBytes(Native Method)
04-26 18:53:26.099 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.Posix.sendto(Posix.java:151)
04-26 18:53:26.100 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:177)
04-26 18:53:26.100 13039-13092/kovacsdev.hu.facec W/System.err:     at libcore.io.IoBridge.sendto(IoBridge.java:517)

UploadUI 在第 108 行包含以下代码片段：

String result = rh.sendPostRequest(UPLOAD_URL,data);

在这里，rh代表RequestHandler。它应该将图片的细节发布到SQL数据库中，但服务器端代码似乎无法工作。

- plaidshirt

我看不到图像。UTF-8 不适用于图像。 - greenapps

rh.sendPostRequest。如果这引起了错误，为什么不显示它的代码呢？ - greenapps

1个回答

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- Sathish Gadde · Accepted Answer

您好，我也遇到了同样的问题。现在使用以下代码已解决。希望它也能帮到您……尝试一下吧。

将以下代码放在onCreate()函数中：

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_upload_documents);

    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                .permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }

   //Statement or Controls Declaration or your code

}