嗨,我已经编写了一段代码,应该从c#桌面应用程序登录到WebAPI 2站点,一切都能正常工作,但是我得到了一个带有如下消息的Newtonsoft.Json.JsonReaderException
Error reading string. Unexpected token: StartObject. Path ”,line 1,position 1.
我的代码如下.
static internal async Task<string> GetBearerToken(string siteUrl,string Username,string Password)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(siteUrl);
client.DefaultRequestHeaders.Accept.Clear();
HttpContent content = new StringContent("grant_type=password&username=" + Username + "&password=" + Password,Encoding.UTF8,"application/x-www-form-urlencoded");
Task<HttpResponseMessage> responseTask = client.PostAsync("Token",content);
HttpResponseMessage response = await responseTask;
if (response.IsSuccessStatusCode)
{
Task<string> message = response.Content.ReadAsAsync<string>();
return await message;
}
else
{
return null;
}
}
fiddler报告的原始响应消息
HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Content-Length: 593
Content-Type: application/json;charset=UTF-8
Expires: -1
Server: Microsoft-IIS/8.0
Set-Cookie: .AspNet.Cookies=vo5b0v_43BLYlfz-rYTZ-TSGi9Rg5jSd9bvKn9693e-Kx3mMI1JVX1Sk-696f_fnPEFPRwFrNWvdMfDWUTWBElfQF3UfcUAxEE5aU5zRgI40sYKapXXnC2ucIiNKCqVsceve0cxNQYVAIr_YhMNjFLRqBX7H3BTPVKGist2AeUkWw6S4VNijx5iQhvWrAvF4xlJSznCiykNqR-QHD_ZLM5-H3GZoghrkvMpr27eXY4mLIqg4lwV2Qah0gQlXnjuWbHHZqLj5HcID1S7_OfPldBE3YqBOR2JxHLITg3yPw3lbXNkHc1UDdG9HExq0faJptz0SBqd8tIeZ7buoJTZ4LHV0TcYSEs4HZ3-Bd84XX7XeWPa5qnTaAJqXaW2FAigD38a9ASr15r5wnzWv9xQxlg; path=/; HttpOnly
X-SourceFiles: =?UTF-8?B?RDpcMDYgUHJvamVjdEphZGVcMDIgU2FuZGJveFwwNCBDbGVhbnVwIEFQSSBBY2NvdW50XENsZWFudXBBUElBY2NvdW50XFRva2Vu?=
X-Powered-By: ASP.NET
Date: Sun,02 Mar 2014 15:22:57 GMT
{"access_token":"hM_60CprAm6DqCe7qgte1vsnih2d4j1Uy_FDlgoPkEgS_4u0__4lk5KNd0XysTktOfwMw4ffH3uaRmNaFObVnEY3yWS70hio03azUbCrFKk0VNgj31Y0_zLrd-J0ScZ4vzLdtw7KAXtNfcYySKk1EFtJRB4yYcqvobwORC3eu1VHyYInqy7kBgIhAZYE_NZ3zQrrGerZjy__zCuDdRtXO-klkFtg3dONq7cMP_TBi6xLmBjhXlhzUTKGzOrofijlkyMNHF1rx0CgWjhqEx2rJU8Hakq4Bac1pCqoLaYm91DRSrYO--ff4GWlP5wLeqZAhHIA7t17e2pyZXrUT7V1ExBeCnGkWbWoR8Y-QN8ocT7Q3xjydFd4uWSQD5B-Z1bC-nLpUrtkOGZiukl6J3aCJOqeidY6MEM4TMaJZlIp-Oc","token_type":"bearer","expires_in":1209599,"userName":"Alice",".issued":"Sun,02 Mar 2014 15:22:57 GMT",".expires":"Sun,16 Mar 2014 15:22:57 GMT"}
我怀疑json解析器需要一种不同的消息格式然后它就会得到.我不希望更改webapi站点,所以我可能需要更改客户端实现.我不是要改变什么,也不是我要看的地方.
解决方法
经过一些激烈的谷歌搜索,我得到了我的代码.
我做的第一件事就是添加了一个额外的类来存储令牌.
class TokenResponseModel
{
[JsonProperty("access_token")]
public string AccessToken { get; set; }
[JsonProperty("token_type")]
public string TokenType { get; set; }
[JsonProperty("expires_in")]
public int ExpiresIn { get; set; }
[JsonProperty("userName")]
public string Username { get; set; }
[JsonProperty(".issued")]
public string IssuedAt { get; set; }
[JsonProperty(".expires")]
public string ExpiresAt { get; set; }
}
static internal async Task<TokenResponseModel> GetBearerToken(string siteUrl,string Password)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(siteUrl);
client.DefaultRequestHeaders.Accept.Clear();
HttpContent requestContent = new StringContent("grant_type=password&username=" + Username + "&password=" + Password,"application/x-www-form-urlencoded");
HttpResponseMessage responseMessage = await client.PostAsync("Token",requestContent);
if (responseMessage.IsSuccessStatusCode)
{
string jsonMessage;
using (Stream responseStream = await responseMessage.Content.ReadAsStreamAsync())
{
jsonMessage = new StreamReader(responseStream).ReadToEnd();
}
TokenResponseModel tokenResponse = (TokenResponseModel)JsonConvert.DeserializeObject(jsonMessage,typeof(TokenResponseModel));
return tokenResponse;
}
else
{
return null;
}
}
