HttpUrlConnection gerResponseCode接続リセット例外を与える

Question

con.getResponseCode（）をヒットしようとすると、接続リセットの例外が発生しますが、Webブラウザで同じURLを入力しても応答は正しく返されますが、コードから応答は返されません。これを確認するのを手伝ってください。

This is the code:- 

private HttpURLConnection con; 
private String directory; 

public MIMESender(String url_path,String provider,String user,String password) throws Exception { 
    super(); 
    // TODO Auto-generated constructor stub 
    URL url = new URL(url_path); 
    System.out.println("Url Path=====" + url_path); 
    con = (HttpURLConnection) url.openConnection(); 

    con.setRequestMethod("POST"); 

    con.setDoOutput(true); 

    con.setRequestProperty("X-XIAM-ContentProvider",provider); 
    con.setRequestProperty("X-XIAM-ContentUsername",user); 
    con.setRequestProperty("X-XIAM-ContentPassword",password); 
    //System.setProperty("http.keepAlive", "false"); 
    //System.out.println("Keep Alive=========" + System.getProperty("http.keepAlive")); 
} 

public void setContentType(String type) throws IOException 
{ 
    con.setRequestProperty("Content-Type",type); 
} 

public static MimeBodyPart createXMLPart(String xml) throws MessagingException 
{ 
    ByteArrayDataSource fileData = new ByteArrayDataSource(xml.getBytes(),"text/xml"); 
    DataHandler fileDataHandler = new DataHandler(fileData); 
    MimeBodyPart body = new MimeBodyPart(); 
    body.setDataHandler(fileDataHandler); 
    body.setHeader("Content-Type",fileData.getContentType()); 
    return body; 
} 

public static MimeBodyPart createBodyPart(String filename) throws MessagingException 
{ 
    File file = new File(filename); 
    return createBodyPart(file); 
} 

public static MimeBodyPart createBodyPart(File file) throws MessagingException 
{ 
    FileDataSource fileData = new FileDataSource(file); 
    DataHandler fileDataHandler = new DataHandler(fileData); 
    MimeBodyPart body = new MimeBodyPart(); 
    body.setDataHandler(fileDataHandler); 
    body.setHeader("Content-Type",fileData.getContentType()); 
    if(!fileData.getContentType().startsWith("text")) 
     body.setHeader("Content-Transfer-Encoding","base64"); 
    else body.setHeader("Content-Transfer-Encoding","7bit"); 
    body.setContentID(file.getName()); 
    body.setHeader("Content-Location",file.getName()); 
    body.setHeader("Content-Disposition","attachment; filename="+file.getName());  
    return body; 
} 

public static MimeBodyPart createBodyPart(String location,File file) throws MessagingException 
{ 
    FileDataSource fileData = new FileDataSource(file); 
    DataHandler fileDataHandler = new DataHandler(fileData); 
    MimeBodyPart body = new MimeBodyPart(); 
    body.setDataHandler(fileDataHandler); 
    body.setHeader("Content-Type",fileData.getContentType()); 
    if(!fileData.getContentType().startsWith("text")) 
     body.setHeader("Content-Transfer-Encoding","base64"); 
    body.setContentID(file.getName()); 
    body.setHeader("Content-Location",location); 
    body.setHeader("Content-Disposition","attachment; filename="+file.getName()); 
    return body; 
} 

public String sendItem(String xml,String location,String filename) throws MessagingException,IOException 
{ 

    String response = null; 
    MimeMultipart mime = new MimeMultipart(); 
    mime.setSubType("related");      
    String type = mime.getContentType(); 
    setContentType(type); 

    mime.addBodyPart(MIMESender.createXMLPart(xml)); 

    if(!filename.equals("")) 
    { 
     File file = new File(filename); 
     mime.addBodyPart(MIMESender.createBodyPart(location,file)); 
    } 
    response = submit(mime); 
    return response; 
} 

public String send(String xml,String location,String filename) throws MessagingException,IOException 
{ 
    String response = null; 
    response = send(xml,location,new File(filename)); 
    return response; 
} 

public String send(String xml,String location,File file) throws MessagingException,IOException 
{ 
    String response = null; 
    File[] files = new File[1]; 
    files[0] = file; 
    response = send(xml,location,files); 
    return response; 
} 

public String send(String xml,String location,File[] files) throws MessagingException,IOException 
{ 
    String response = null; 

    try 
    { 

    MimeMultipart mime = new MimeMultipart(); 
    mime.setSubType("related");   
    String type = mime.getContentType(); 
    setContentType(type); 

    mime.addBodyPart(MIMESender.createXMLPart(xml)); 

    MimeMultipart mime_mix = new MimeMultipart(); 
    mime_mix.setSubType("mixed"); 
    for(int i=0;i<files.length;i++) 
    { 
     System.out.println("files : " + files[i]); 
     mime_mix.addBodyPart(MIMESender.createBodyPart(files[i])); 
    } 

    MimeBodyPart body_mix = new MimeBodyPart(); 
    body_mix.setContent(mime_mix); 
    body_mix.setHeader("Content-Type",mime_mix.getContentType()); 
    body_mix.setHeader("Content-Location",location); 
    mime.addBodyPart(body_mix); 

    response = submit(mime); 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 
    return response; 
} 

public String send(String xml,String location,File[] files,String preloc,String preview) throws MessagingException,IOException 
{ 
    String response = null; 
    MimeMultipart mime = new MimeMultipart(); 
    mime.setSubType("related");   
    String type = mime.getContentType(); 
    setContentType(type); 

    mime.addBodyPart(MIMESender.createXMLPart(xml)); 

    if(location!=null) 
    { 
     System.out.println("Inside Location not equals to null"); 
     MimeMultipart mime_mix = new MimeMultipart(); 
     mime_mix.setSubType("mixed"); 
     for(int i=0;i<files.length;i++) 
     { 
      System.out.println(files[i].getAbsolutePath() + " - " + files[i].exists()); 
      mime_mix.addBodyPart(MIMESender.createBodyPart(files[i])); 
     } 

     MimeBodyPart body_mix = new MimeBodyPart(); 
     body_mix.setContent(mime_mix); 
     body_mix.setHeader("Content-Type",mime_mix.getContentType()); 
     body_mix.setHeader("Content-Location",location); 
     mime.addBodyPart(body_mix); 
    } 

    if(preloc!=null){ 
    File file = new File(preview); 
    mime.addBodyPart(MIMESender.createBodyPart(preloc,file)); 
    } 
    response = submit(mime); 
    return response; 
} 

public String submit(MimeMultipart mime) throws IOException, MessagingException 
{ 
    String response=null; 
    DataOutputStream dos = new DataOutputStream(con.getOutputStream()); 
    dos.writeBytes("\r\n\r\n"); 
    mime.writeTo(dos); 
    dos.flush(); 
    dos.close();   
    System.out.println("Connection : "+con); 
    String httpCode = String.valueOf(con.getResponseCode()); // I am getting exception here.. 
    String respMsg = con.getResponseMessage(); 
    response = "HTTP/1.1 "+httpCode+" "+respMsg+"\n"; 

    int length = con.getContentLength(); 
    byte[] cnt = new byte[length]; 
    DataInputStream in = new DataInputStream(con.getInputStream()); 
    in.readFully(cnt); 
    response = response + new String(cnt).replaceAll("&lt;","<").replace("&gt;",">") + "\n"; 

    con.disconnect(); 
    return response; 
} 

/** 
* @param args 
*/ 
public static void main(String[] args) { 
    // TODO Auto-generated method stub 

    try { 
     String url = args[0]; 
     MIMESender sender = new MIMESender(url,"CP001","CP001","CP001"); 
     File file = new File(args[1]); 
     FileInputStream in = new FileInputStream(file); 
     int len = (int)file.length(); 
     byte[] data = new byte[len]; 
     in.read(data); 

     int n = args.length - 3; 
     File[] files = new File[n]; 
     for(int i=0;i<n;i++) 
      files[i] = new File(args[3+i]); 
     String resp = sender.sendItem(new String(data),args[2],args[2]); 
     System.out.println(resp); 

    } catch(IOException io){io.printStackTrace(); 
    } catch(MessagingException msg){msg.printStackTrace();  
    } catch(Exception e){e.printStackTrace();} 
} 

public String getDirectory() { 
    return directory; 
} 

public void setDirectory(String directory) { 
    this.directory = directory; 
} 

私の完全なスタックトレースがある： -

java.net.SocketException: Connection reset 
at java.net.SocketInputStream.read(Unknown Source) 
at java.io.BufferedInputStream.fill(Unknown Source) 
at java.io.BufferedInputStream.read1(Unknown Source) 
at java.io.BufferedInputStream.read(Unknown Source) 
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source) 
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) 
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source) 
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) 
at java.net.HttpURLConnection.getResponseCode(Unknown Source) 
at com.nokia.content.misc.MIMESender.submit(MIMESender.java:218) 
at com.nokia.content.misc.MIMESender.send(MIMESender.java:201) 
at com.nokia.content.CTUploader.sendSubItem(CTUploader.java:1202) 
at com.nokia.content.CTUploader.send(CTUploader.java:800) 
at com.nokia.content.CTUploader.send(CTUploader.java:502) 
at com.nokia.content.ui.CPA.doSubmission(CPA.java:727) 
at com.nokia.content.ui.CPA.submitMenuItemActionPerformed(CPA.java:571) 
at com.nokia.content.ui.CPA.access$16(CPA.java:563) 
at com.nokia.content.ui.CPA$9.actionPerformed(CPA.java:195) 
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) 
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.setPressed(Unknown Source) 
at javax.swing.AbstractButton.doClick(Unknown Source) 
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source) 
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source) 
at java.awt.Component.processMouseEvent(Unknown Source) 
at javax.swing.JComponent.processMouseEvent(Unknown Source) 
at java.awt.Component.processEvent(Unknown Source) 
at java.awt.Container.processEvent(Unknown Source) 
at java.awt.Component.dispatchEventImpl(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Window.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) 
at java.awt.EventQueue.access$400(Unknown Source) 
at java.awt.EventQueue$2.run(Unknown Source) 
at java.awt.EventQueue$2.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue.dispatchEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.run(Unknown Source) 

この問題の男を解決するために私を助けてください.. 誰もがあなたを決定することができることは極めてまれであるので..

Answer 1

ありがとうコードだけに基づく問題ですが、私はどのように進むべきかについての提案に答えています。

ブラウザからは動作しますが、コードからは動作しないとすれば、コードはブラウザとまったく同じトランザクションを送信しない可能性があります。最も可能性の高い違いは、欠落したHTTPヘッダーまたは余分なHTTPヘッダー、またはサーバーが接続を閉じる原因となるUser-Agentヘッダーの違いです。

これをデバッグする最も簡単な方法は、Wiresharkを使用してネットワークトラフィックをキャプチャし、ブラウザとコードの違いを判断することです。重要な違いがあり、依然として助けが必要な場合は、相違点を示す別の質問を投稿してください。