POST JSON Data to web API in SSIS Script task from SQL

Question

我一直在寻找这个问题的答案，但我一直很短，所以希望我能找到答案。 诚然，我不是最好的 C# 程序员，这是出于必要并且没有资源来帮助我开发它，所以我首先跳了脚。

I have some code that I have successfully posted JSON data to the API IF I hard code the JSON string, but I would like to set the results from a SQL query as an OBJ and then serialize them using NEWTONSOFT.JSON to pass to the API代替硬编码的数据。

公共无效主要（）{

        string url = Dts.Variables["$Package::url"].Value.ToString();
        string user = Dts.Variables["$Package::user"].Value.ToString();
        string pwd = Dts.Variables["$Package::pwd"].GetSensitiveValue().ToString();



        string result = Dts.Variables["User::JSON"].Value.ToString();
        var JsonResult = JsonConvert.SerializeObject(result);


        var request = (HttpWebRequest)WebRequest.Create(url);
        string authHeader = System.Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(user + ":" + pwd));
        request.Headers.Add("Authorization", "Basic" + " " + authHeader);
        request.ContentType = "application/json";
        request.Accept = "application/json";
        request.Method = "POST";
        request.Headers.Add("Cookie: freedomIdentifyKey=XX");

         result.ToString();


        using (var streamWriter = new StreamWriter(request.GetRequestStream()))
        {
            streamWriter.Write(JsonResult);
            streamWriter.Flush();
            streamWriter.Close();



            var httpResponse = (HttpWebResponse)request.GetResponse();



            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
            {
                var result2 = streamReader.ReadToEnd();
            }
        }



        Dts.TaskResult = (int)ScriptResults.Success;
    }

我不断收到错误：脚本任务中的 0x1：调用目标已引发异常。

关于如何解决这个问题的任何想法？

Answer 1

您不需要使用StreamWriter 。

string url = Dts.Variables["$Package::url"].Value.ToString();
string user = Dts.Variables["$Package::user"].Value.ToString();
string pwd = Dts.Variables["$Package::pwd"].GetSensitiveValue().ToString();
string result = Dts.Variables["User::JSON"].Value.ToString();

var JsonResult = JsonConvert.SerializeObject(result);

var request = (HttpWebRequest)WebRequest.Create(url);
string authHeader = System.Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(user + ":" + pwd));
request.Headers.Add("Authorization", "Basic" + " " + authHeader);
request.ContentType = "application/json";
request.Accept = "application/json";
request.Method = "POST";
request.Headers.Add("Cookie: freedomIdentifyKey=XX");

using (var requestStream = request.GetRequestStream())
{
    requestStream.Write(JsonResult);

    using (var dataStream = response.GetResponseStream())
    {
        // Open the stream using a StreamReader for easy access.
        StreamReader reader = new StreamReader(dataStream);
        // Read the content.
        string responseFromServer = reader.ReadToEnd();
    }
}

如果您想改用 HttpClient ：

string url = Dts.Variables["$Package::url"].Value.ToString();
string user = Dts.Variables["$Package::user"].Value.ToString();
string pwd = Dts.Variables["$Package::pwd"].GetSensitiveValue().ToString();
string result = Dts.Variables["User::JSON"].Value.ToString();

// HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks.
var client = new HttpClient();

// Call asynchronous network methods in a try/catch block to handle exceptions.
try 
{
   var response = await client.PostAsync(url, result);
   response.EnsureSuccessStatusCode();
   string responseBody = await response.Content.ReadAsStringAsync();
}
catch(HttpRequestException e)
{
   // do something
}

未测试

Answer 2

我能够解决这个问题。 问题不在于代码，而在于 Newtonsoft.JSON package。 它甚至在到达代码之前就失败了，我试图将它作为 SQL 2016 目标运行。 当我切换回 2019 年的项目时，它运行良好。 为了让它像 2016 年一样运行，我使用 GACUTIL 安装了 NEWTONSOFT.JSON，它现在运行良好。

我确实进行了更改，并在代码中使用了 SQL 查询，而不是使用执行 SQL 任务，然后将其传递给变量。