本地获得url字符编码的两种方式

   String addr = "http://localhost:8080/webtest//servlet/XMLServlet?index=0";

 // jdk
  URL url = new URL(addr);
  System.out.println(url.openConnection().getContentType());

  // httpclient
  HttpClient client = new HttpClient();
  PostMethod post = new PostMethod(addr);
  client.executeMethod(post);
  System.out.println(post.getResponseHeader("Content-Type"));