如何使用 java.net. urlconnection 触发和处理 HTTP 请求
That tutorial basically only shows how to fire a GET request and read the response. It doesn't explain anywhere how to use it to among others perform a POST request, set request headers, read response headers, deal with cookies, submit a HTML form, upload a file, etc.
So, how can I use
java.net.URLConnection to fire and handle "advanced" HTTP requests?