如何覆盖 http-header “主机"在 HttpURLConnection 中?

2022-01-11 00:00:00 header java httpurlconnection

我的代码如下:

URL url = new URL("1.0.0.25/otfg/services");
HttpURLConnection cnx = url.openConnection();
cnx.setRequestProperty("Host", "example.org");

但是当我使用 tcpdump 记录传出的包时，http-header "Host" 是 1.0.0.25.

But when I log the outgoing packages with tcpdump the http-header "Host" is 1.0.0.25.

可能是http-header主机"在发送过程的后期被覆盖，如果是，我该如何避免这种行为.

Could it be that the http-header "Host" is overwritten at a later stage of the sending process, if yes how can I avoid this behavior.

推荐答案

重复问题.

最后一条评论解决了我的问题:

The last comment solved my problem:

System.setProperty("sun.net.http.allowRestrictedHeaders", "true")

或者在虚拟机启动时:

-Dsun.net.http.allowRestrictedHeaders=true

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