httpwebrequest 获取http图片

[huanghua]

httpwebrequest 访问http图片地址 ，如果http图片地址是无效的，会反应很慢

WebRequest wreq = WebRequest.Create(httpPath);
wreq.Proxy = null;
System.Net.ServicePointManager.Expect100Continue = false;
HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
Stream s = wresp.GetResponseStream();
System.Drawing.Image img;
img = System.Drawing.Image.FromStream(s);

该怎么解决。

[娃都会打酱油了]

设定timeout时间……比如设定最长3秒 request.Timeout = 3000;

[huanghua]

引用 楼主 whh3802 的回复:

httpwebrequest 访问http图片地址 ，如果http图片地址是无效的，会反应很慢 WebRequest wreq = WebRequest.Create(httpPath); wreq.Proxy = null; System.Net.ServicePointManager.Expect100Continue = false; HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse(); Stream s = wresp.GetResponseStream(); System.Drawing.Image img; img = System.Drawing.Image.FromStream(s); 该怎么解决。

设置了 ，不行

[娃都会打酱油了]

不知道你怎么设置的……

[WM_JAWIN]

方法： 1)把他下载到byte[]中，然后检测开头几个字符（JPG/PNG/BMP/GIF开头几个字箱都是固定的） 2)检查wresp.contentType 是不是"image/XXXX"