统一身份认证服务 源码（客户端）

/// <summary>
/// 参考说明：http请求统一身份认证服务
/// </summary>
/// <param name="address">服务地址，服务地址参考统一身份认证服务API页面</param>
/// <param name="method">HTTP 请求方法</param>
/// <param name="paramObj">HTTP POST 请求时，传入对象参数</param>
/// <returns>远程统一认证服务响应消息</returns>
private string HttpRequest(string address, EnumHttpMethod method, string paramObj)
{
using (WebClient httpClient = new WebClient())
{
//步骤1：设置统一身份认证服务的服务地址
httpClient.BaseAddress = IOVAuthrizeBaseUri;
//步骤2：HTTP 请求的标头中需要添加“Authorization”，参考如下：
httpClient.Headers.Add("Content-Type", "application/json");
httpClient.Headers.Add("Authorization", GetAuthorization(AppID, AppSecret));
try
{
//步骤3：请求远程资源
string response = string.Empty;
if (method == EnumHttpMethod.POST)
{
//序列化对象参数
var jsonObj = JsonConvert.SerializeObject(paramObj);
//编码
byte[] postData = Encoding.UTF8.GetBytes(jsonObj);
//POST请求
byte[] responseData = httpClient.UploadData(address, "POST", postData); // 得到返回字符流
response = Encoding.UTF8.GetString(responseData);// 解码
}
else
{
//特别说明：address 在GET请求形势下，如果有参数address示例：api/Token/Refresh?accessToken={accessToken}
byte[] responseData = httpClient.DownloadData(address); // 得到返回字符流
response = Encoding.UTF8.GetString(responseData);// 解码
}
return response;
}
catch (WebException ex)
{
//获取统一认证服务返回的信息
var res = (HttpWebResponse)ex.Response;
//HTTP状态401：身份认证不通过
if (res.StatusCode == HttpStatusCode.Unauthorized)
{
//未授权，尝试检查步骤2。错误原因(1)：未添加“Authorization”；错误原因(2)：应用ID或应用秘钥不正确。
return string.Empty;
}
else
{
//获取详细的错误信息，这时可能统一身份认证服务出现内部异常或者客户端出现内部异常，可使用
//下面代码抛出异常明细
StreamReader sr = new StreamReader(res.GetResponseStream());
var strHtml = sr.ReadToEnd();
throw new Exception(strHtml);
}
}
}
}
/// <summary>
/// 获取Authorization标头值
/// </summary>
/// <param name="appID">统一认证服务颁发的应用ID</param>
/// <param name="appSecret">统一认证服务颁发的应用秘钥</param>
/// <returns>标头值</returns>
private string GetAuthorization(string appID, string appSecret)
{
var authorization = string.Format("{0}:{1}", appID, appSecret);
return "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(authorization));
}
/// <summary>
/// HTTP 请求方法
/// </summary>
public enum EnumHttpMethod
{
POST,
GET
}