以防有.NET/C#背景的人在寻找类似话题时，这是一个关于UPS RESTFul API授权和跟踪信息处理的解决方案，以下是我使用建议的方法成功运作的：
#define TEST_MODE
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Text.Json.Nodes;
...
if (!ServicePointManager.Expect100Continue)
{
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = (SecurityProtocolType)(3072);
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => true;
}
var myClientID = "{Type your ClientId here}";
var mySecretID = "{Type your SecretID here}";
#if TEST_MODE
var baseAddress = "https://wwwcie.ups.com";
#else
var baseAddress = "https://onlinetools.ups.com";
#endif
var accessID = $"{myClientID}:{mySecretID}";
var base64AccessID = Convert.ToBase64String(Encoding.ASCII.GetBytes(accessID));
using (var client = new HttpClient())
{
var request = new HttpRequestMessage()
{
Method = HttpMethod.Post,
RequestUri = new Uri($"{baseAddress}/security/v1/oauth/token"),
Content = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("grant_type", "client_credentials")
})
};
request.Headers.Add("Authorization", $"Basic {base64AccessID}");
var response = await client.SendAsync(request);
var jsonResult = await response.Content.ReadAsStringAsync();
var result = JsonSerializer.Deserialize<JsonObject>(jsonResult);
var access_token = result?["access_token"]?.ToString();
var trackingNumber = "1Z5338FF0107231059";
request = new HttpRequestMessage()
{
Method = HttpMethod.Get,
RequestUri = new Uri($"{baseAddress}/api/track/v1/details/{trackingNumber}")
};
request.Headers.Add("Authorization", $"Bearer {access_token}");
request.Headers.Add("transId", $"{DateTime.Now.Ticks}");
#if TEST_MODE
request.Headers.Add("transactionSrc", $"testing");
#else
request.Headers.Add("transactionSrc", $"{App Name and version}");
#endif
response = await client.SendAsync(request);
jsonResult = await response.Content.ReadAsStringAsync();
Console.WriteLine(jsonResult);
}
【更新】
如
Nick最近在他对这个解决方案的评论中指出的那样，
“我不得不在代码的顶部添加了一个TLS1.2声明，否则它会抛出一个关于无法建立安全连接/通道的错误”原始代码必须通过在其顶部添加以下代码行来进行修正：
if (!ServicePointManager.Expect100Continue)
{
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = (SecurityProtocolType)(3072);
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => true;
}
我还要注意的是，为了使解决方案代码能够在.NET Framework 4.7.x/4.8下编译通过，需要使用
Package Manager的命令。
Install-Package System.Text.Json
必须在“Package Manager Console”中执行，或者您可以使用
Newtonsoft.Json NuGet的包来替代
System.Text.Json，但在后一种情况下，您可能需要进行一些小的代码编辑。
