写入服务器时出错 [英] Error writing to server

问题描述

我使用Java程序POST方法将文件从一台服务器上传到另一台服务器。但是我得到了异常。

  java.io.IOException：在sun.net写入服务器
时出错。在sun.net.www.protocol.http.HttpURLConnection.writeRequests www.protocol.http.HttpURLConnection.writeRequests（HttpURLConnection.java:582）
（HttpURLConnection.java:594）
。在sun.net。 www.protocol.http.HttpURLConnection.getInputStream（HttpURLConnection.java:1216）
在java.net.HttpURLConnection.getResponseCode（HttpURLConnection.java:379）
在com.test.rest.HttpURLConnectionExample.TransferFile（ HttpURLConnectionExample.java:107）在com.test.rest.HttpURLConnectionExample.main 
（HttpURLConnectionExample.java:44）
  

我有其他的方法可以和服务器进行身份验证。从下面的代码将被调用。当我得到服务器的响应，我得到以上例外。将文件传输到服务器我已经写下了下面的方法。我的样本代码如下：

 公共静态无效TransferFile（）{
字符串urlStr =HTTP：//192.168 .0.8：8600 / audiofile的路径=622080256分之1/ virtualhaircut.mp3\" ; 
文件tempFile =新建文件（/ home / MyPath / Workspace / Sample / virtualhaircut.mp3）; 
 BufferedWriter br = null; 
 HttpURLConnection conn = null; 
网址; 
尝试{
 url = new URL（urlStr）; 
 AuthenticationUser（）; 
 conn =（HttpURLConnection）url.openConnection（）; 
 conn.setDoOutput（true）; 
 conn.setRequestMethod（POST）; 
 
 conn.setRequestProperty（Content-Type，new MimetypesFileTypeMap（）。getContentType（tempFile.getName（）））; 
} catch（MalformedURLException e1）{
 System.out.println（Malformed）; 
 e1.printStackTrace（）; 
} catch（ProtocolException e）{
 System.out.println（Protocol）; 
 e.printStackTrace（）; 
 catch（IOException e）{
 System.out.println（IO）; 
 e.printStackTrace（）; 
} 
 
 System.out.println（line 69）; 
 
 
 FileInputStream fis; 
 OutputStream fos; 
 
 
尝试{
 System.out.println（line 75）; 
 
 System.out.println（line 77）; 
 fis = new FileInputStream（tempFile）; 
 fos = conn.getOutputStream（）; 
 byte [] buf = new byte [1024 * 2]; 
 int len = 0; 
 System.out.println（line 80）; （（len = fis.read（buf））> 0）{
 fos.write（buf，0，len）; 
 System.out.println（line 85）; 
} 
 System.out.println（line 87）; 
 buf = null; 
 fos.flush（）; 
 fos.close（）; 
 fis.close（）; 
 $ b $ catch（FileNotFoundException e）{
 System.out.println（）; 
 e.printStackTrace（）; 
} catch（IOException e）{
 e.printStackTrace（）; 
 
 try {
 
 if（conn.getResponseCode（）== 200）{
 System.out.println（here）; 
 
 $ b catch（IOException e）{
 e.printStackTrace（）; 
 
 
 
 
 $ b 
解决方案
可能是因为接收服务器关闭了连接而出现错误，可能是因为您的文件超出了大小限制。你有小文件测试吗？
 
I am uploading a file from one server to another server using a Java Program 'POST' method. But I am getting below exception.
java.io.IOException: Error writing to server
    at sun.net.www.protocol.http.HttpURLConnection.writeRequests(HttpURLConnection.java:582)
    at sun.net.www.protocol.http.HttpURLConnection.writeRequests(HttpURLConnection.java:594)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1216)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:379)
    at com.test.rest.HttpURLConnectionExample.TransferFile(HttpURLConnectionExample.java:107)
    at com.test.rest.HttpURLConnectionExample.main(HttpURLConnectionExample.java:44)
I have other method who will authenticate with server. Which will be be called from below code. When I am getting response from server, I am getting above exception. To Transfer a file to server I have written below method. My sample code is below: 
public static void TransferFile(){
        String urlStr = "http://192.168.0.8:8600/audiofile?path=1/622080256/virtualhaircut.mp3";
        File tempFile = new File("/home/MyPath/Workspace/Sample/virtualhaircut.mp3");
        BufferedWriter br=null;
        HttpURLConnection conn = null;
        URL url;
        try {
            url = new URL(urlStr);
            AuthenticationUser();
            conn = (HttpURLConnection) url.openConnection();
            conn.setDoOutput(true);
            conn.setRequestMethod("POST");

            conn.setRequestProperty("Content-Type", new MimetypesFileTypeMap().getContentType(tempFile.getName()));
        } catch (MalformedURLException e1) {
            System.out.println("Malformed");
            e1.printStackTrace();
        } catch (ProtocolException e) {
            System.out.println("Protocol");
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("IO");
            e.printStackTrace();
        }

        System.out.println("line 69");


        FileInputStream fis;
        OutputStream fos;


        try {
            System.out.println("line 75");

                System.out.println("line 77");
                fis = new FileInputStream(tempFile);
                fos = conn.getOutputStream();
                byte[] buf = new byte[1024 * 2];
                int len = 0;
                System.out.println("line 80");
                while ((len = fis.read(buf)) > 0) {
                    fos.write(buf, 0, len);
                    System.out.println("line 85");
                }
                System.out.println("line 87");
                buf = null;
                fos.flush();
                fos.close();
                fis.close();

        }catch (FileNotFoundException e) {
            System.out.println("");
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {

            if (conn.getResponseCode() == 200) {
                System.out.println("here");

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


    }

解决方案
It is possible that the error ocurred because the receiving server closed the connection, maybe because your file exceeded the size limit. Have you tested with small files?

                        
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