敬求：NationECCode.dll 如何调用

敬求：NationECCode.dll 如何调用，vfp 9.0 调用时无反应
这是医保要求用刷脸设备，通过每个人的刷脸后，获取返回数据（获取返回数据后再进行各类业务报销）
我用如下调用不成功，请版主和高手们帮助看看。先感谢！感谢！
vfp调用：（url 是医保一并下发的网址，cjson 是自己组合的 json 串,作为入参)
 Url = "http://172.16.33.247/localcfc/api/hsecfc/localQrCodeQuery"
 c_json='{"data":[{"businessType":"01203","deviceType":"","officeId":"32760","officeName":"内科",'
 c_json=c_json+'"operatorId":"001","operatorName":"郑医生","orgId":"35020319001"}],"orgId":"35020319001","transType":"ec.query"}'
 Declare Integer NationEcTrans In NationECCode.dll string,string
 ?NationEcTrans(@url,@cjson) && 返回的是 1701404 这7个数字,不是想要的数据
 ***********

有C#调用示例，是医保一并下发的文档内的实例
[DllImport("NationECCode.dll", CallingConvention = CallingConvention.StdCall)]
public static extern void NationEcTrans(string url, string input, IntPtr output);

public static string InOut(string url, string input)
{
    IntPtr outPut = System.Runtime.InteropServices.Marshal.AllocHGlobal(2048);
    NationEcTrans(url, input, outPut);
    string retStr = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(outPut);
    System.Runtime.InteropServices.Marshal.FreeHGlobal(outPut);
    return retStr;
}

static void Main(string[] args)
{
    string toUrl = "http://172.16.33.247/localcfc/api/hsecfc/localQrCodeQuery";
    string inPut = "{\"data\":{\"businessType\":\"01203\",\"deviceType\":\"\",\"officeId \":\"32760\",\"officeName\":\"123\",\"operatorId\":\"test001\",\"operatorName\":\"456\",
\"orgId\":\"35020319001\"},\"orgId\":\"35020319001\",\"transType\":\"ec.query\"}";
    string outPut= InOut(toUrl, inPut);
    Console.WriteLine("出参:"+ outPut);
    Console.Read();
}
   感谢能回复！！

[此贴子已经被作者于2024-11-5 22:13编辑过]