2011-01-30 70 views
1

HI我在Java中遇到了與從客戶端寫入Web服務器相關的問題。我使用下面的代碼,請幫我在哪裏,我錯了如何在java中的web服務器上編寫

對於服務器類

import java.net.ServerSocket; 
import java.net.Socket; 
import java.io.InputStream; 
import java.util.Scanner; 
import java.io.InputStreamReader; 
import java.io.BufferedReader; 

public class Server 
{ 
    public static void main(String args[]){ 
     try{ 
      ServerSocket s = new ServerSocket(8080); 
      System.out.println("ashish"); 

      Socket incoming = s.accept(); 
      System.out.println("the status of the socket="+incoming.isConnected()); 
      InputStream inStream = incoming.getInputStream(); 

      InputStreamReader isr=new InputStreamReader(inStream); 
      BufferedReader br=new BufferedReader(isr); 
      String str=null; 
      while((str=br.readLine()).equals("exit")==false){ 
       System.out.println(str); 
      } 

      System.out.println("System exit"); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     }  
    } 
} 

以及客戶端類實際上是小應用程序,有如下因素代碼

import java.applet.Applet; 
import java.net.URL; 
import java.net.HttpURLConnection; 
import java.io.OutputStreamWriter; 
import java.io.PrintWriter; 

public class testApplet extends Applet 
{ 

    public void init(){} 

    public void start(){ 
     try{ 
      URL url = new URL("http://localhost:8080"); 
      HttpURLConnection httpCon = (HttpURLConnection)url.openConnection(); 
      httpCon.setDoOutput(true); 
      httpCon.setRequestMethod("PUT"); 

      PrintWriter out = new PrintWriter(httpCon.getOutputStream()); 
      out.print("Resource content\n"); 
      out.print("exit"); 
      out.close(); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     } 
    } 

    public void stop(){} 

    public void destroy(){} 
} 

現在,當我運行服務器然後服務器只顯示以下內容

PUT/HTTP/1.1 
User-Agent: Mozilla/4.0 (Windows Vista 6.1) Java/1.6.0 
Host: localhost:8080 
Accept: text/html, image/gif. image/jpeg, *; q=.2, */*; q=.2 
Connection: keep-alive 

但它沒有寫co我寫PrintWriter 的下一個對象,然後進入等待狀態的內容

另一方面,小程序剛剛啓動時才啓動。當我關閉服務器程序,然後小應用程序提供了以下異常

java.net.ConnectException: Connection refused: connect 
    at java.net.PlainSocketImpl.socketConnect(Native Method) 
    at java.net.PlainSocketImpl.doConnect(Unknown Source) 
    at java.net.PlainSocketImpl.connectToAddress(Unknown Source) 
    at java.net.PlainSocketImpl.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at sun.net.NetworkClient.doConnect(Unknown Source) 
    at sun.net.www.http.HttpClient.openServer(Unknown Source) 
    at sun.net.www.http.HttpClient.openServer(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 testApplet.start(testApplet.java:19) 
    at sun.applet.AppletPanel.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 

請告訴什麼是我錯了

+0

我認爲這將有助於代碼格式化,但如果你想這樣做,我沒有經過並縮進你的源代碼。 – 2011-01-30 17:04:39

回答

5

嘗試

httpCon.setChunkedStreamingMode(0); 

寫入的OutputStream之前。如果內容長度未知,則應始終對http連接執行此操作。

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