版权声明：本文为博主原创文章，未经博主允许不得转载。https://github.com/SCFMVP https://blog.csdn.net/qq_37832932/article/details/81489701
一. 功能需求
把NB设备发送给云平台的数据获取下来并以图表的形式展示
二. 实现
先写一个华为OceanConnect的接口类SDK, 数据解析JSON类
直接上代码:
//代码来自于网络
namespace NADemo
{
public class NASDK
{
public bool isHttp = false;
string m_logfile = "wk_na.txt";
string m_pltip;
string m_appid;
string m_appsecret;
int m_pltPort;
string m_p12certfile;
string m_certpassword;
public NASDK(string platformIP, int port, string appId, string appSecret, string p12cert, string certpassword)
{
this.m_pltip = platformIP;
this.m_appid = appId;
this.m_appsecret = appSecret;
this.m_pltPort = port;
this.m_p12certfile = p12cert;
this.m_certpassword = certpassword;
}
//获取token
public TokenResult getToken()
{
TokenResult result = null;
string apiPath = "/iocm/app/sec/v1.1.0/login";
string body = "appId=" + this.m_appid + "&secret=" + this.m_appsecret;
string method = "POST";
string contenttype = "application/x-www-form-urlencoded";
WebHeaderCollection headers = new WebHeaderCollection();
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
TokenResult tr = JsonConvert.DeserializeObject<TokenResult>(apiresult.result);
result = tr;
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
//注册设备
public RegDeviceResult regDevice(string token, string verifycode)
{
return regDevice(token, verifycode, verifycode, null, null, 0);
}
public RegDeviceResult regDevice(string token, string verifycode, string nodeid, string enduserid, string psk, int timeout)
{
RegDeviceResult result = null;
string apiPath = "/iocm/app/reg/v1.2.0/devices?appId=" + this.m_appid;
RegDeviceRequest rdr = new RegDeviceRequest();
rdr.nodeId = nodeid;
rdr.verifyCode = verifycode;
rdr.timeout = timeout;
string body = JsonConvert.SerializeObject(rdr);
string method = "POST";
string contenttype = "application/json";
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("app_key", this.m_appid);
headers.Add("Authorization", "Bearer " + token);
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
RegDeviceResult tr = JsonConvert.DeserializeObject<RegDeviceResult>(apiresult.result);
if (tr.deviceId.Trim() != "")
{
result = tr;
}
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
//修改设备
public string modifyDevice(string token, string deviceid, string mid, string devmodel)
{
string result = null;
string apiPath = "/iocm/app/dm/v1.2.0/devices/" + deviceid + "?appId=" + this.m_appid;
ModDeviceRequest mdr = new ModDeviceRequest();
mdr.protocolType = "CoAP";
mdr.manufacturerId = mid;
mdr.model = devmodel;
string body = JsonConvert.SerializeObject(mdr);
string method = "PUT";
string contenttype = "application/json";
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("app_key", this.m_appid);
headers.Add("Authorization", "Bearer " + token);
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
result = apiresult.statusCode.ToString();
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
//订阅消息
public string subscribe(string token, string notifytype, string callbackurl)
{
string result = null;
string apiPath = "/iocm/app/sub/v1.2.0/subscribe";
string body = "{\"notifyType\":\"" + notifytype + "\",\"callbackurl\":\"" + callbackurl + "\"}";
string method = "POST";
string contenttype = "application/json";
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("app_key", this.m_appid);
headers.Add("Authorization", "Bearer " + token);
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
result = apiresult.statusCode.ToString();
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
//查询历史数据
public HistoryDataResult queryHistoryData(string token, string deviceId, int count)
{
return queryHistoryData(token, deviceId, deviceId, "", "", 0, count, "", "");
}
public HistoryDataResult queryHistoryData(string token, string deviceId,string serviceid,int pageno,int pagesize,string starttime,string endtime)
{
return queryHistoryData(token, deviceId, deviceId,serviceid,"",pageno,pagesize,starttime,endtime);
}
public HistoryDataResult queryHistoryData(string token, string deviceId, string gatewayid, string serviceId, string property, int pageno, int pagesize, string starttime, string endtime)
{
HistoryDataResult result = null;
string apiPath = string.Format("/iocm/app/data/v1.1.0/deviceDataHistory?deviceId={0}&gatewayId={1}&serviceId={2}&pageNo={3}&pageSize={4}&startTime={5}&endTime={6}&property={7}&appId={8}", deviceId, gatewayid, serviceId, pageno, pagesize, starttime, endtime, property, this.m_appid);
string body = "";
string method = "GET";
string contenttype = "application/json";
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("app_key", this.m_appid);
headers.Add("Authorization", "Bearer " + token);
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
HistoryDataResult tr = JsonConvert.DeserializeObject<HistoryDataResult>(apiresult.result);
result = tr;
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
//下发命令
public string sendCommand(string token, string deviceId, string callbackurl, string serviceId, string commandId, List<CommandPara> lsParas)
{
string result = null;
string apiPath = string.Format("/iocm/app/cmd/v1.4.0/deviceCommands?appId={0}", this.m_appid);
SendCommandRequest scr = new SendCommandRequest();
scr.deviceId = deviceId;
scr.callbackUrl = callbackurl;
scr.command = new Command();
scr.command.method = commandId;
scr.command.serviceId = serviceId;
scr.command.paras = "#commandparas#";
string body = JsonConvert.SerializeObject(scr);
string parabody = "{";
foreach (CommandPara item in lsParas)
{
if (item.isNum) { parabody += string.Format("\"{0}\":{1},", item.paraName,item.paraValue); } else {
parabody += string.Format("\"{0}\":\"{1}\",", item.paraName, item.paraValue);
}
}
parabody= parabody.TrimEnd(',')+"}";
body = body.Replace("\"#commandparas#\"", parabody);
string method = "POST";
string contenttype = "application/json";
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("app_key", this.m_appid);
headers.Add("Authorization", "Bearer " + token);
try
{
ApiResult apiresult = PostUrl(apiPath, body, headers, method, contenttype, this.m_p12certfile, this.m_certpassword);
log(apiresult.statusCode.ToString() + apiresult.result);
result = apiresult.statusCode.ToString();
}
catch (Exception ex)
{
log(ex.Message);
log(ex.StackTrace);
result = null;
}
return result;
}
private void log(string msg)
{
File.AppendAllText(this.m_logfile, msg);
}
public class ApiResult
{
public int statusCode;
public string result;
public string errcode;
public string memo;
}
private ApiResult PostUrl(string apiPath, string postData, WebHeaderCollection headers, string method, string contenttype, string p12certfile, string cerpassword)
{
string url = string.Format("https://{0}:{1}{2}", this.m_pltip, this.m_pltPort, apiPath);
if (isHttp)
{
url = string.Format("http://{0}:{1}{2}", this.m_pltip, this.m_pltPort, apiPath);
}
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
HttpWebRequest httpRequest = (HttpWebRequest)HttpWebRequest.Create(url);
X509Certificate2 cerCaiShang = new X509Certificate2(p12certfile, cerpassword);
if (!isHttp)
{
httpRequest.ClientCertificates.Add(cerCaiShang);
}
httpRequest.Method = method;
httpRequest.ContentType = contenttype;
httpRequest.Referer = null;
httpRequest.AllowAutoRedirect = true;
httpRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
httpRequest.Accept = "*/*";
for (int i = 0; i < headers.Count; i++)
{
for (int j = 0; j < headers.GetValues(i).Length; j++)
{
httpRequest.Headers.Add(headers.Keys[i], headers.GetValues(i)[j]);
}
}
if (isHttp) { httpRequest.ServicePoint.Expect100Continue = false; }
//
if (method != "GET")
{
Stream requestStem = httpRequest.GetRequestStream();
StreamWriter sw = new StreamWriter(requestStem);
sw.Write(postData);
sw.Close();
}
HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream receiveStream = httpResponse.GetResponseStream();
string result = string.Empty;
using (StreamReader sr = new StreamReader(receiveStream))
{
result = sr.ReadToEnd();
}
ApiResult r = new ApiResult();
r.result = result;
r.statusCode = (int)httpResponse.StatusCode;
return r;
}
public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
if (sslPolicyErrors == SslPolicyErrors.None)
return true;
return true;
}
}
}
JSON解析类:
using Newtonsoft.Json.Converters;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace NADemo
{
/// <summary>
/// 设备profile：data1 int data2 string(8,32) ret1 int ret2 string(8,32) para1 para2 para12 para22
/// 0xf0上报0xff命令相应0x91 cmd1 0x92 cmd2
/// </summary>
public class TokenResult
{
/// <summary>
///
/// </summary>
public string accessToken { get; set; }
/// <summary>
///
/// </summary>
public string tokenType { get; set; }
/// <summary>
///
/// </summary>
public string refreshToken { get; set; }
/// <summary>
///
/// </summary>
public int expiresIn { get; set; }
/// <summary>
///
/// </summary>
public string scope { get; set; }
}
public class RegDeviceRequest
{
/// <summary>
///
/// </summary>
public string verifyCode { get; set; }
/// <summary>
///
/// </summary>
public string nodeId { get; set; }
/// <summary>
///
/// </summary>
public int timeout { get; set; }
}
public class RegDeviceResult
{
/// <summary>
///
/// </summary>
public string deviceId { get; set; }
/// <summary>
///
/// </summary>
public string verifyCode { get; set; }
/// <summary>
///
/// </summary>
public int timeout { get; set; }
/// <summary>
///
/// </summary>
public string psk { get; set; }
}
public class ModDeviceRequest
{
/// <summary>
///
/// </summary>
public string name { get; set; }
/// <summary>
///
/// </summary>
public string endUser { get; set; }
/// <summary>
///
/// </summary>
public string manufacturerId { get; set; }
/// <summary>
///
/// </summary>
public string model { get; set; }
/// <summary>
///
/// </summary>
public string protocolType { get; set; }
}
public class DeviceDataHistoryDTOsItem
{
/// <summary>
///
/// </summary>
public string deviceId { get; set; }
/// <summary>
///
/// </summary>
public string gatewayId { get; set; }
/// <summary>
///
/// </summary>
public string appId { get; set; }
/// <summary>
///
/// </summary>
public string serviceId { get; set; }
/// <summary>
///
/// </summary>
public Dictionary<string, string> data { get; set; }
public string DataString {
get {
string result = "";
foreach (KeyValuePair<string,string> item in data)
{
result += item.Key + ":" + item.Value + "\r\n";
}
return result;
}
}
/// <summary>
///
/// </summary>
public string timestamp { get; set; }
}
public class HistoryDataResult
{
/// <summary>
///
/// </summary>
public int totalCount { get; set; }
/// <summary>
///
/// </summary>
public int pageNo { get; set; }
/// <summary>
///
/// </summary>
public int pageSize { get; set; }
/// <summary>
///
/// </summary>
public List<DeviceDataHistoryDTOsItem> deviceDataHistoryDTOs { get; set; }
}
public class CommandPara
{
public string paraName { get; set; }
public string paraValue { get; set; }
public bool isNum { get; set; }
}
public class Command
{
/// <summary>
///
/// </summary>
public string serviceId { get; set; }
/// <summary>
///
/// </summary>
public string method { get; set; }
/// <summary>
///
/// </summary>
public string paras { get; set; }
}
public class SendCommandRequest
{
/// <summary>
///
/// </summary>
public string deviceId { get; set; }
/// <summary>
///
/// </summary>
public Command command { get; set; }
/// <summary>
///
/// </summary>
public string callbackUrl { get; set; }
}
}
三. 效果展示
