我如何知道我是否已成功连接到我打开连接的 URL?

sap*_*Pro 1 java connection url networking jakarta-ee

要检查我是否可以连接到名为service的 web 应用程序,我打开了一个到其地址的连接。如何检查是否已连接到此URL/Service?我正在考虑发送某种状态方法(当客户端尝试打开与此 URL 的连接时),以确定客户端是否能够成功建立与服务的连接。但是我该怎么做呢?

我正在尝试这样的事情:

          final URL url = new URL("http://localhost:8084/service/index.jsp");
          final URLConnection urlc = url.openConnection();
          InputStream response = urlc.getInputStream();
          // Now call a method in the service app that sends a status method...
          // .....or can I get away with this ?
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Evg*_*eev 7

我建议

    URL url = new URL("http://stackoverflow.com/questions/13775103/how-do-i-know-if-i-have-successfully-connected-to-the-url-i-opened-a-connection");
    HttpURLConnection conn = (HttpURLConnection)url.openConnection();
    System.out.println(conn.getResponseCode());
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它打印200(确定)