返回数据如下：

{
    "mainTable": {
        "create_time": "2023-01-03",
        "RECORD_DATE": "2023-01-03",
        "id": "6",
        "ASSEMBLY_ITEM": "",
        "ASSEMBLY_SN": "0955D"
    },
    "detail1": [{
            "COMPONENT_NUMBER": "1",
            "COMPONENT_ITEM": "",
            "COMPONENT_TYPE": "III",
            "id": "37",
            "CORE_PARTS_SN": "***312**"
        }, {
            "COMPONENT_NUMBER": "2",
            "COMPONENT_ITEM": "",
            "COMPONENT_TYPE": "主机",
            "id": "38",
            "CORE_PARTS_SN": "*****1250902****"
        }
    ]
}
 

 代码：

//using Kingdee.BOS.Core.Metadata.Util;
//using Kingdee.BOS.JSON;
//using Kingdee.BOS.Util;
using Kingdee.BOS.JSON;
using Kingdee.BOS.WebApi.Client;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;namespace cux.button.test
{public class TestHttp{public   void test(){   String data= "datajson={\"operationinfo\":{\"operator\":\"1\"},\"mainTable\":{\"ASSEMBLY_SN\":\"DIO:00.02.N1.0955DOM:IDB10-C910-CTYP:BJ4259SNFKB-XJ(RPZ)PD:2023-1-3 18:50:37NO.:1/1\"},\"pageInfo\":{\"pageNo\":\"1\",\"pageSize\":\"10\"},\"header\":{\"systemid\":\"wq\",\"currentDateTime\":\"20240726135047\",\"Md5\":\"746AAF020BE2BBF8D44BFEBD31A4069B\"}}";String serviceUrl = String.Format("{0}/{1}", "http://IP地址", "api/cube/restful/interface/getDataByPK/getTraceInfoByAssemblySn");HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(data);myRequest.Method = "POST";myRequest.ContentLength = buf.Length;//myRequest.ContentType="application/json";myRequest.ContentType = "application/x-www-form-urlencoded";myRequest.MaximumAutomaticRedirections = 1;myRequest.AllowAutoRedirect = true;//发送请求Stream stream= myRequest.GetRequestStream();stream.Write(buf, 0, buf.Length);stream.Close();//获取接口返回值//通过WEB访问对象获取响应内容HttpWebResponse myResponse= (HttpWebResponse)myRequest.GetResponse();//通过响应内容流创建StreamReader对象,因为StreamReader更高级更快StreamReader reader=new StreamReader(myResponse.GetResponseStream(),Encoding.UTF8 );String returnXml= reader.ReadToEnd(); //利用StreamReader就可以从响应内容从头读到尾JSONObject jo= JSONObject.Parse( returnXml );String returnJsonContent    = jo["result"].ToString();jo = JSONObject.Parse(returnJsonContent);JSONObject mainTableJson= JSONObject.Parse(jo["mainTable"].ToString());String id= mainTableJson["id"].ToString();String itemNum = mainTableJson["ASSEMBLY_ITEM"].ToString();JSONArray detailJArrays = (JSONArray)jo["detail1"];foreach (JSONObject detail in detailJArrays) { string componentNumber = detail["COMPONENT_NUMBER"].ToString();string comSn = detail["CORE_PARTS_SN"].ToString();  Console.WriteLine("COMPONENT_NUMBER: COMPONENT_NUMBER = {0}, Type = {1}", componentNumber, comSn);}reader.Close();myResponse.Close();}}
}