HttpURLConnection URI 不能为空

Question

我想向网站提出一个get请求，但我获得了URI can't be null.

String url = "https://valid_url.com";
HttpURLConnection connection = (HttpURLConnection)(new URL(url)).openConnection();
connection.setRequestMethod("GET");
connection.connect(); //-> java.lang.IllegalArgumentException: URI can't be null.

为什么我得到URI can't be null？

P.S。：我正在使用JDK10

Answer 1

您的代码正常工作。

我对此进行了测试：

String url = "https://google.com";
HttpURLConnection connection = (HttpURLConnection)(new URL(url)).openConnection();
connection.setRequestMethod("GET");
connection.connect();

可能是您要访问的URL不是 get 类型。检查一下。