Eclipse通過HttpClient獲取

我使用Eclipse的Juno與正確配置代理服務器設置（我可以檢查更新並安裝插件）我的操作系統是Windows 7
我下載了一個，並安裝HttpClient 4.2.5（通過複製所有罐子的進入項目目錄，將所有構建路徑的Eclipse所）

3.Java類

public class ConnectClass { 

public static final String USER_AGENT = "Mozilla/5.0"; 

private String cookies; 
private HttpClient client; 

ConnectClass() { 
    client = new DefaultHttpClient(); 
} 

public static void main(String[] args) { 
    String vogel = "http://www.vogella.com"; 

    ConnectClass connect = new ConnectClass(); 
    try { 
     connect.doGet(vogel); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
} 

public void doGet(String url) throws Exception { 

    HttpGet request = new HttpGet(url); 
    request.addHeader("User-Agent", USER_AGENT); 
    HttpResponse response = client.execute(request); 

    System.out.println("Response Code:" 
      + response.getStatusLine().getStatusCode()); 

    BufferedReader rd = new BufferedReader(new InputStreamReader(response 
      .getEntity().getContent())); 

    StringBuffer result = new StringBuffer(); 
    String line = ""; 
    while ((line = rd.readLine()) != null) { 
     result.append(line); 
    } 

} 

}

4我有一個錯誤

INFO: I/O exception (java.net.SocketException) caught when connecting to the target host: Network is unreachable: connect 
июл 03, 2013 1:53:41 PM org.apache.http.impl.client.DefaultRequestDirector tryConnect 
INFO: Retrying connect

錯誤堆棧跟蹤

java.net.SocketException: Network is unreachable: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) 
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) 
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) 
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) 
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) 
at java.net.PlainSocketImpl.connect(Unknown Source) 
at java.net.SocksSocketImpl.connect(Unknown Source) 
at java.net.Socket.connect(Unknown Source) 
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127) 
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) 
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294) 
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:643) 
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479) 
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) 
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805) 
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784) 
at ConnectClass.doGet(ConnectClass.java:49) 
at ConnectClass.main(ConnectClass.java:37)

來源

2013-07-03 Valeriy