问题背景:
我正在尝试对我在Azure中托管的Web API进行简单的let data = new Uint8Array(req.files.image.data);
lwip.open(data, {
width: parseInt(req.body.width),
height: parseInt(req.body.height)
}, (image, err) => ...)
。
问题:
如果我通过浏览器或Postman等请求工具访问我的Web API端点,我收到HttpWebRequest
响应但没有问题。
如果我尝试通过JSON
调用访问同一个端点,我会收到500致命错误,但我能够在HttpWebRequest
的响应属性中看到Try Catch
响应已被退回。
JSON
守则:
以下是我对Web API的简单请求。如前所述,在The remote server returned an error: (500) Internal Server Error.
中,回复 返回我期望的Catch
,如下所示:
JSON
请求:
{"ResponseMessage":"OK","ResponseContent:[{"kind":"youtube#playlistItem","etag":"\"gMxXHe- ........ etc }]}
我很欣赏确定500的原因不是直截了当的,但任何人都可以提供一个理由我会收到此错误,但仍然从服务中收到 string url ="http://myapi.azurewebsites.net/api/videos/GetYouTubeVideos";
try
{
HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;
WebResponse wr = req.GetResponse();
}
catch (WebException wex)
{
var pageContent = new StreamReader(wex.Response.GetResponseStream())
.ReadToEnd();
}
显然是例外吗
答案 0 :(得分:0)
有一些关于WebHeaders
的属性你必须小心!示例代码:
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "GET";
webRequest.Proxy = webProxy;
webRequest.AllowAutoRedirect = true;
webRequest.Timeout = 20 * 1000;
webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
webRequest.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36";
WebResponse wr = webRequest.GetResponse()