java - 仅获取响应代码而不是 url 的完整来源

Question

我有一个 URL，我只想检查页面的响应代码，而不是完整的页面源，因为获取完整的页面源非常慢。什么是正确的方法？

HttpUrlConnection 中的 getResponseCode() 获取完整的页面源还是仅获取标题？

Answer 1

直接来自文档，HttpUrlConnection#getResponseCode()

Gets the status code from an HTTP response message. For example, in the case of the following status lines: HTTP/1.0 200 OK HTTP/1.0 401 Unauthorized

It will return 200 and 401 respectively. Returns -1 if no code can be discerned from the response (i.e., the response is not valid HTTP).