java - HttpURL连接到Tomcat

Question

我正在尝试从 java 桌面应用程序连接到 jsp Servlet 以发送文件。

客户端编码:

HttpURLConnection urlConnection = null;
URL url = null;
url = new URL("http://127.0.0.1:8080/emobile/AddTripMobile");
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
OutputStream out = new BufferedOutputStream(
urlConnection.getOutputStream());

out.write(12); //The data to send
out.flush();

如果我将桌面应用程序连接到服务器，什么也不会发生。(我在doGet和doPost中设置了断点)

有什么建议吗？

Answer 1

您需要添加以下内容:

InputStream is = urlConnection.getInputStream();
out.write(12); //The data to send
out.flush();