【转】get a mysterious problem,when i use HttpWebRequest in unity c# script

in script,i use HttpWebRequest to get service from network.but it comes a mysterious problem. the source code:

1. string url = "http://apis.baidu.com/apistore/vop/baiduvopjson";
2. HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
3. print(request.Address);
4. request.Method = "get";
5. HttpWebResponse response = (HttpWebResponse)request.GetResponse();
6. Stream s = response.GetResponseStream();
7. StreamReader Reader = new StreamReader(s, Encoding.UTF8);
8. string strValue = "";
9. strValue = Reader.ReadToEnd();
10. print (strValue);

the result is like(i have copy the html to a html file):

but the mysterious problem comes.when i use this code in Visual studio c# project,here is the source code:

1. string url = "http://apis.baidu.com/apistore/vop/baiduvopjson";
2. HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
3. request.Method = "get";
4. HttpWebResponse response = (HttpWebResponse)request.GetResponse();
5. Stream s = response.GetResponseStream();
6. StreamReader Reader = new StreamReader(s, Encoding.UTF8);
7. string strValue = "";
8. strValue = Reader.ReadToEnd();
9. Console.WriteLine(strValue);

the result which is true in fact is as follows:

1. {"errNum":300202,"errMsg":"Missing apikey"}

do some one know what mistake do i make in unity project? why can i get the ture httpweb response?

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个解答，截止elenzil · 05月10日 18:42

the problem is not your use of HTTPWebRequest, the problem is your use of the remote service. if you use command-line "curl" with the same URL, you get the same response:

1. curl http://apis.baidu.com/apistore/vop/baiduvopjson
2. {"errNum":300202,"errMsg":"Missing apikey"}

or even just visit http://apis.baidu.com/apistore/vop/baiduvopjson in a browser - same response.

it seems like you should be providing an API key somehow. maybe as a form parameter, maybe as a URL parameter, header param, etc, etc. you should look up the docs for whatever service that is.

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ceo1207· 05月11日 01:13 0

I have found the point of my problem....The string of request method should be uppercase....omg,the mono .net has such a slight difference with .net framework. Anyway,thanks for your reply.