java - 如何发送请求标头？

Question

如何发送请求标头？假设我想在向网站发出 HTTP 请求时发送自己的请求标头。

我怎么做 ？

URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();

// HOW DO I SEND REQUEST HEADER LIKE Date,Cookie,Cache-Control ???

Answer 1

得到 HttpURLConnection 连接后，可以如下操作

//adding headers
con.setRequestProperty("headername", value);

Answer 2

connection.setRequestProperty("HeaderName", "Value");