"{\"ErrorCode\":402，\“Message\”：\“接收到无效的JSON输入。\”}“尝试调用restsharp以调用Postmark时

Question

我尝试使用C#中的restsharp调用邮戳电子邮件服务RestAPI，得到一个"{\"ErrorCode\":402，\“Message\”：\“接收到无效的JSON输入。\”}“错误。尽管我已将数据格式设置为json，但我甚至尝试了自定义json序列化。我不确定我是否正确地设置了参数，或者甚至不确定这是实现我正在尝试的目标的最好方法，所以欢迎任何帮助和建议。

public void SendRest(string emailAddress, string subject, string body, params string[] recipients)
    {
        var recipientString = "";
        foreach (var recipient in recipients)
        {
            recipientString = recipientString + recipient + ',';
        }

        var client = new RestClient();
        client.BaseUrl = new Uri("https://api.postmarkapp.com/email");

        var request = new RestRequest(Method.POST);
        request.RequestFormat = DataFormat.Json;
        request.AddHeader("Content-Type", "application/json");
        request.AddHeader("Accept", "application/json");
        request.AddHeader("X-Postmark-Server-Token", "Valid-Token");

        request.AddParameter("From", "test@testington.co.uk");
        request.AddParameter("To", "robin.windon@hotmail.co.uk");
        request.AddParameter("Subject", "hi");
        request.AddParameter("TextBody", "this is a test");
        request.AddParameter("TrackOpens", true);
        request.AddParameter("TrackLinks", "None");


        IRestResponse response = client.Execute(request);
    }

Answer 1

你发送的参数要么是(序列化的) POST参数(在主体中)，要么是GET- parameters，我不确定restsharp是如何处理这个问题的。

但是您没有按照要求在POST正文中发送任何JSON。

我猜应该是这样的：

var params = JSON.Stringify(
    {
        "From": "robin.windon...",
        "To": "",
        "Subject": "",
        "TextBody": "",
        "TrackOpens": "",
        "TrackLinks": ""
    }
);
request.AddParameter("application/json", params, ParameterType.RequestBody);