我正在向一个 HTTPS URL 发送一个 get 请求，但不知为何我得到了“Set-Cookie”的空值。迭代时，我可以看到 header-key 具有“set-cookie”，但 header-value 为 null。
这是我的代码：
URL obj = new URL(url);
HttpsURLConnection conn = (HttpsURLConnection) obj.openConnection();
HttpsURLConnection.setFollowRedirects(false);
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
conn.setRequestProperty("Connection", "keep-alive");
conn.setRequestProperty("Accept-Encoding", "gzip, deflate");
conn.connect();
Map em = conn.getHeaderFields();
System.out.println("header Values......" + em.toString());
String headerName = null;
for (int i = 1; (headerName = conn.getHeaderFieldKey(i)) != null; i++)
{
System.out.println("Header Nme : " + headerName);
System.out.println(conn.getHeaderField(i));
}
Output:
header Values......{null=[HTTP/1.1 200 OK], x-wily-info=[Clear guid=0BE0EC9D0A7E67816C471FA946FD2EBB], Date=[Sat, 29 Mar 2014 03:27:41 GMT], Content-Length=[8106], x-wily-servlet=[*******************], X-FRAME-OPTIONS=[SAMEORIGIN], Connection=[close], Content-Type=[text/html;charset=UTF-8]}
Header Nme : Date
Sat, 29 Mar 2014 03:27:41 GMT
Header Nme : X-FRAME-OPTIONS
SAMEORIGIN
Header Nme : x-wily-info
Clear guid=0BE0EC9D0A7E67816C471FA946FD2EBB
Header Nme : x-wily-servlet
*****************************
Header Nme : Content-Type
text/html;charset=UTF-8
Header Nme : Content-Length
8106
**Header Nme : Set-Cookie
null
Header Nme : Set-Cookie
null**
Header Nme : Connection
close
Response Code : 200
从浏览器我可以看到如下：
Connection close
Content-Length 8106
Content-Type text/html;charset=UTF-8
Date Sat, 29 Mar 2014 02:20:31 GMT
Set-Cookie JSESSIONID=*********************; Path=/****; Secure; **HttpOnly**
Set-Cookie loginToken=*************;Path=/****/login/LoginProcess.do; **HttpOnly**; Secure
X-FRAME-OPTIONS SAMEORIGIN
x-wily-info Clear guid=0BA36F4A0A7E67816C471FA938E304CA
x-wily-servlet *****************************************
我在许多 HTTPS URL 上尝试了同样的操作，所有这些都工作正常，这个只是造成了问题；我注意到的主要区别是该服务器实际上将 cookie 作为“HttpOnly”发送。它会引起问题吗？
