将不同的代理连接到特定地址

我正在开发一个Java Web服务应用程序（使用JAX-WS），它必须使用两个不同的代理来 Build 与Internet和Intranet的分离连接 . 作为解决方案，我尝试编写自己的java.net.ProxySelector，它返回一个用于Internet或Intranet的java.net.Proxy实例（HTTP类型） .

在一个小测试应用程序中，我尝试通过URL.openConnection（）下载网页，然后我用我自己的替换默认的ProxySelector . 但它导致了一个例外：

java.net.SocketException：未知的代理类型：java.net.Socks.Socket.mpl上的java.net.SocksSocketImpl.connect（SocksSocketImpl.java:370）中的HTTP（Socket.java:519） （Socket.java:469）位于sun.net.www.http.HttpClient.openServer（HttpClient.java:394）sun.net.www.http的sun.net.NetworkClient.doConnect（NetworkClient.java:163） . HttpClient.openServer（HttpClient.java:529）at sun.net.www.http.HttpClient . （HttpClient.java:233）at sun.net.www.http.HttpClient.New（HttpClient.java:306）at sun . net.www.protocol.http.HttpURLConnection.getNewHttpClient（HttpURLConnection.java:844）at sun.net.www.protocol.http.HttpURLConnection.plainConnect（HttpURLConnection.java:792）at sun.net.www.protocol.http . HttpURLConnection.connect（HttpURLConnection.java：703）at sun.net.www.protocol.http.HttpURLConnection.getInputStream（HttpURLConnection.java:1026）at java.net.HttpURLConnection.getResponseCode（HttpURLConnection.java:373）at norman.test诺曼的.ProxyTest.conntectToRmViaProxy（ProxyTest.java:42） .test.ProxyTest.main（ProxyTest.java:65）

• 问题："Why tries the application to establish a connection via SOCKS, if my ProxySelector only returns a HTTP Proxy?"

2问题：“是否有替代方案，为每个连接定义不同的代理？”

这是我的ProxySelector：

public class OwnProxySelector extends ProxySelector {
private Proxy intranetProxy;
private Proxy extranetProxy;
private Proxy directConnection = Proxy.NO_PROXY;
private URI intranetAddress;
private URI extranetAddress;

/* (non-Javadoc)
 * @see java.net.ProxySelector#connectFailed(java.net.URI, java.net.SocketAddress, java.io.IOException)
 */
public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
    // Nothing to do
}

/* (non-Javadoc)
 * @see java.net.ProxySelector#select(java.net.URI)
 */
public List select(URI uri) {
    ArrayList<Proxy> result = new ArrayList<Proxy>();

    if(intranetAddress.getHost().equals(uri.getHost()) && intranetAddress.getPort()==uri.getPort()){
        result.add(intranetProxy);
        System.out.println("Adding intranet Proxy!");
    }
    else if(extranetAddress.getHost().equals(uri.getHost()) && extranetAddress.getPort()==uri.getPort()){
        result.add(extranetProxy);
        System.out.println("Adding extranet Proxy!");
    }
    else{
        result.add(directConnection);
        System.out.println("Adding direct connection!");
    }

    return result;
}

public void setIntranetProxy(String proxyAddress, int proxyPort){
    if(proxyAddress==null || proxyAddress.isEmpty()){
        intranetProxy = Proxy.NO_PROXY;
    }
    else{
        SocketAddress address = new InetSocketAddress(proxyAddress, proxyPort);
        intranetProxy = new Proxy(Proxy.Type.HTTP, address);
    }
}

public void setExtranetProxy(String proxyAddress, int proxyPort){
    if(proxyAddress==null || proxyAddress.isEmpty()){
        extranetProxy = Proxy.NO_PROXY;
    }
    else{
        SocketAddress address = new InetSocketAddress(proxyAddress, proxyPort);
        extranetProxy = new Proxy(Proxy.Type.HTTP, address);
    }
}

public void clearIntranetProxy(){
    intranetProxy = Proxy.NO_PROXY;
}

public void clearExtranetProxy(){
    extranetProxy = Proxy.NO_PROXY;
}

public void setIntranetAddress(String address) throws URISyntaxException{
    intranetAddress = new URI(address);
}

public void setExtranetAddress(String address) throws URISyntaxException{
    extranetAddress = new URI(address);
}
}

这是测试类：

public class ProxyTest {
OwnProxySelector ownSelector = new OwnProxySelector();

public ProxyTest(){
    ownSelector.setIntranetProxy("intranet.proxy", 8123);
    try {
        ownSelector.setIntranetAddress("http://intranet:80");
    } catch (URISyntaxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    ownSelector.setExtranetProxy("", 0);
    try {
        ownSelector.setExtranetAddress("http://www.example.com:80");
    } catch (URISyntaxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }


    ProxySelector.setDefault(ownSelector);
}

public void conntectToRmViaProxy(boolean internal, String connectAddress){
    try {
        URL url = new URL(connectAddress);

        HttpURLConnection conn = (HttpURLConnection)url.openConnection();

        conn.setRequestMethod("GET");
          if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            System.out.println(conn.getResponseMessage());
          }
          else{
              BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
              int tmp = reader.read();
              while(tmp != -1){
                  System.out.print((char)tmp);
                  tmp = reader.read();
              }
          }

    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public static void main(String[] args){
    ProxyTest proxyText = new ProxyTest();
    proxyText.conntectToRmViaProxy(true, "http://intranet:80");
}
}