通过URL获取各种参数

try
      {
         URL url = new URL("http://www.runoob.com/index.html?language=cn#j2se");
         System.out.println("URL 为：" + url.toString());
         System.out.println("协议为：" + url.getProtocol());
         System.out.println("验证信息：" + url.getAuthority());
         System.out.println("文件名及请求参数：" + url.getFile());
         System.out.println("主机名：" + url.getHost());
         System.out.println("路径：" + url.getPath());
         System.out.println("端口：" + url.getPort());
         System.out.println("默认端口：" + url.getDefaultPort());
         System.out.println("请求参数：" + url.getQuery());
         System.out.println("定位位置：" + url.getRef());
      }catch(IOException e)
      {
         e.printStackTrace();
      }