有没有人做过调用百度统计的数据，net 操作源码
是获取实时访客的数据，有搜索词，ip 等信息，通过接口获取到本地？
https://tongji.baidu.com/web/demo/trend/latest?siteId=5503017

我知道 访问这个https://api.baidu.com/json/tongji/v1/ReportService/getData
接口 但是我添加完参数访问后，返回的结果总是不正确的
返回结果 ：{"header":{"desc":"system failure","failures":[{"code":8002,"message":"The Json message you provided is invalid.please check the request json sn:8000000000010","position":"_sys","content":"id:433887735864960"}],"status":3}}
不知道是什么原因，所以希望求源码 demo。net的

还是需要net 请求的方式
我的代码是 以下这样，但是报错误，不能用，有没有人可以看出哪里有问题？
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{

            string sContent = "site_id=*****&method=trend/latest/a&start_date=20180901&end_date=20180903&metrics=start_time,area,source,access_page,searchword&max_results=100&order=start_time,desc&offset=0";
            sContent = "{}";
            Response.Write(ResultData("https://api.baidu.com/json/tongji/v1/ReportService/getData", sContent, "", "").ContentResult);


        }
    }
    private static string _Input_Charset = "utf-8";// System.Text.Encoding.Default.BodyName;//
    public HttpResultDataModel ResultData(string sUrl, string sContent, string httpTopName, string httpTopValue, bool isPost = true, bool isXml = false)
    {
        HttpResultDataModel httpResult = new HttpResultDataModel();

        HttpWebRequest myReq = null;
        StreamReader readStream = null;
        HttpWebResponse myResp = null;
        try
        {
            Encoding encode = System.Text.Encoding.GetEncoding(_Input_Charset);//"utf-8"
            if (!isPost)
            {
                sUrl = sUrl + "?" + sContent;
            }
            myReq = (HttpWebRequest)WebRequest.Create(sUrl);
            myReq.Headers.Add("account_type", "1");
            myReq.Headers.Add("password", "******");
            myReq.Headers.Add("token", "*******");
            myReq.Headers.Add("username", "*******技术");
            if (isXml)
            { myReq.ContentType = "text/xml"; }
            else
            {
                //application/json
                myReq.ContentType = "application/json";
            }
            if (isPost)
            {
                byte[] arrB = encode.GetBytes(sContent);
                myReq.ContentLength = arrB.Length;
                myReq.Method = "POST";
                Stream outStream = myReq.GetRequestStream();
                outStream.Write(arrB, 0, arrB.Length);
                outStream.Close();
            }
            else
            {
                myReq.Method = "GET";
            }
            try
            {
                myResp = (HttpWebResponse)myReq.GetResponse();

            }
            catch (WebException ex)
            {
                myResp = (HttpWebResponse)ex.Response;
            }
            httpResult.HttpCode = (int)myResp.StatusCode;
            Stream ReceiveStream = myResp.GetResponseStream();
            readStream = new StreamReader(ReceiveStream, encode);// Encoding.UTF8
            Char[] read = new Char[256];
            int count = readStream.Read(read, 0, 256);
            string strRes = null;
            while (count > 0)
            {
                strRes += new String(read, 0, count);
                count = readStream.Read(read, 0, 256);
            }
            httpResult.ContentResult = strRes;
        }
        catch (Exception ex)
        {
            httpResult.ContentResult = ex.ToString();
        }
        finally
        {
            if (readStream != null)
            {
                readStream.Close();
            }
            if (myResp != null)
            {
                myResp.Close();
            }
        }
        return httpResult;
    }
}
public class HttpResultDataModel
{
    public string ContentResult { get; set; }
    public int HttpCode { get; set; }
}