前言

最近有个需求是将海康的摄像头视频画面传到我们平台上，作为一个全干工程师，网页后端都要我来做。

相关网址

海康开发平台 资源中心

综合安防管理平台

我这里用的是综合安防管理平台

网址

综合安防管理平台 API

OpenApi 下载

获取Appkey和Secret/密码和密钥

具体步骤可以看这个

python调用海康视频汇聚平台API，获得所有摄像头设备编号、实时播放rtsp地址、回放rtsp地址

保证有默认合作方

拿到Key和Secret

测试

随便找个Api测试

测试成功，有返回信息就可以了

个人魔改工具类

还是不喜欢全局静态的写法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Security;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;namespace HaiKang
{public class HaiKangService{/// <summary>/// 平台ip/// </summary>private string _ip;/// <summary>/// 平台端口/// </summary>private int _port = 443;/// <summary>/// 平台APPKey/// </summary>private string _appkey;/// <summary>/// 平台APPSecret/// </summary>private string _secret;/// <summary>/// 是否使用HTTPS协议/// </summary>private bool _isHttps = true;/// <summary>/// 设置信息参数/// </summary>/// <param name="appkey">合作方APPKey</param>/// <param name="secret">合作方APPSecret</param>/// <param name="ip">平台IP</param>/// <param name="port">平台端口，默认HTTPS的443端口</param>/// <param name="isHttps">是否启用HTTPS协议，默认HTTPS</param>/// <return></return>public HaiKangService(){_appkey = 你的key;_secret = 你的密码;_ip = 你的服务器的ip地址;_port = 1443;//一般是1443端口_isHttps = true;}/// <summary>/// HTTP GET请求/// </summary>/// <param name="uri">HTTP接口Url，不带协议和端口，如/artemis/api/resource/v1/cameras/indexCode?cameraIndexCode=a10cafaa777c49a5af92c165c95970e0</param>/// <param name="timeout">请求超时时间，单位：秒</param>/// <returns></returns>public (byte[]? bytes, WebResponse? response) HttpGet(string uri, int timeout){Dictionary<string, string> header = new Dictionary<string, string>();// 初始化请求：组装请求头，设置远程证书自动验证通过initRequest(header, uri, "", false);// build web request objectStringBuilder sb = new StringBuilder();sb.Append(_isHttps ? "https://" : "http://").Append(_ip).Append(":").Append(_port.ToString()).Append(uri);HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(sb.ToString());req.KeepAlive = false;req.ProtocolVersion = HttpVersion.Version11;req.AllowAutoRedirect = false;   // 不允许自动重定向req.Method = "GET";req.Timeout = timeout * 1000;    // 传入是秒，需要转换成毫秒req.Accept = header["Accept"];req.ContentType = header["Content-Type"];foreach (string headerKey in header.Keys){if (headerKey.Contains("x-ca-")){req.Headers.Add(headerKey + ":" + header[headerKey]);}}HttpWebResponse rsp = null;try{rsp = (HttpWebResponse)req.GetResponse();if (HttpStatusCode.OK == rsp.StatusCode){Stream rspStream = rsp.GetResponseStream();     // 响应内容字节流StreamReader sr = new StreamReader(rspStream);string strStream = sr.ReadToEnd();long streamLength = strStream.Length;byte[] response = System.Text.Encoding.UTF8.GetBytes(strStream);rsp.Close();return ( response,rsp);}else if (HttpStatusCode.Found == rsp.StatusCode || HttpStatusCode.Moved == rsp.StatusCode)  // 302/301 redirect{string reqUrl = rsp.Headers["Location"].ToString();   // 获取重定向URLWebRequest wreq = WebRequest.Create(reqUrl);          // 重定向请求对象WebResponse wrsp = wreq.GetResponse();                // 重定向响应long streamLength = wrsp.ContentLength;               // 重定向响应内容长度Stream rspStream = wrsp.GetResponseStream();          // 响应内容字节流byte[] response = new byte[streamLength];rspStream.Read(response, 0, (int)streamLength);       // 读取响应内容至byte数组rspStream.Close();rsp.Close();return (response, wrsp);}rsp.Close();}catch (WebException e){if (rsp != null){rsp.Close();}}return (null,null);}/// <summary>/// HTTP Post请求/// </summary>/// <param name="uri">HTTP接口Url，不带协议和端口，如/artemis/api/resource/v1/org/advance/orgList</param>/// <param name="body">请求参数</param>/// <param name="timeout">请求超时时间，单位：秒</param>/// <return>请求结果</return>public (byte[]? bytes, string res_str) HttpPost(string uri, string body, int timeout){Dictionary<string, string> header = new Dictionary<string, string>();// 初始化请求：组装请求头，设置远程证书自动验证通过initRequest(header, uri, body, true);// build web request objectStringBuilder sb = new StringBuilder();sb.Append(_isHttps ? "https://" : "http://").Append(_ip).Append(":").Append(_port.ToString()).Append(uri);// 创建POST请求HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(sb.ToString());req.KeepAlive = false;req.ProtocolVersion = HttpVersion.Version11;req.AllowAutoRedirect = false;   // 不允许自动重定向req.Method = "POST";req.Timeout = timeout * 1000;    // 传入是秒，需要转换成毫秒req.Accept = header["Accept"];req.ContentType = header["Content-Type"];foreach (string headerKey in header.Keys){if (headerKey.Contains("x-ca-")){req.Headers.Add(headerKey + ":" + header[headerKey]);}}if (!string.IsNullOrWhiteSpace(body)){byte[] postBytes = Encoding.UTF8.GetBytes(body);req.ContentLength = postBytes.Length;Stream reqStream = null;try{reqStream = req.GetRequestStream();reqStream.Write(postBytes, 0, postBytes.Length);reqStream.Close();}catch (WebException e){if (reqStream != null){reqStream.Close();}return (null,null);}}HttpWebResponse rsp = null;try{rsp = (HttpWebResponse)req.GetResponse();if (HttpStatusCode.OK == rsp.StatusCode){Stream rspStream = rsp.GetResponseStream();StreamReader sr = new StreamReader(rspStream);string strStream = sr.ReadToEnd();long streamLength = strStream.Length;byte[] response = System.Text.Encoding.UTF8.GetBytes(strStream);rsp.Close();return (response,ResponseToStr(response));}else if (HttpStatusCode.Found == rsp.StatusCode || HttpStatusCode.Moved == rsp.StatusCode)  // 302/301 redirect{try{string reqUrl = rsp.Headers["Location"].ToString();    // 如需要重定向URL，请自行修改接口返回此参数WebRequest wreq = WebRequest.Create(reqUrl);rsp = (HttpWebResponse)wreq.GetResponse();Stream rspStream = rsp.GetResponseStream();long streamLength = rsp.ContentLength;int offset = 0;byte[] response = new byte[streamLength];while (streamLength > 0){int n = rspStream.Read(response, offset, (int)streamLength);if (0 == n){break;}offset += n;streamLength -= n;}return ( response, ResponseToStr(response));}catch (Exception e){return (null,null);}}rsp.Close();}catch (WebException e){if (rsp != null){rsp.Close();}}return (null,null);}private void initRequest(Dictionary<string, string> header, string url, string body, bool isPost){// Accept                string accept = "application/json";// "*/*";header.Add("Accept", accept);// ContentType  string contentType = "application/json";header.Add("Content-Type", contentType);if (isPost){// content-md5，be careful it must be lower case.string contentMd5 = computeContentMd5(body);header.Add("content-md5", contentMd5);}// x-ca-timestampstring timestamp = ( ( DateTime.Now.Ticks - TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0)).Ticks ) / 1000 ).ToString();header.Add("x-ca-timestamp", timestamp);// x-ca-noncestring nonce = System.Guid.NewGuid().ToString();header.Add("x-ca-nonce", nonce);// x-ca-keyheader.Add("x-ca-key", _appkey);// build string to signstring strToSign = buildSignString(isPost ? "POST" : "GET", url, header);string signedStr = computeForHMACSHA256(strToSign, _secret);// x-ca-signatureheader.Add("x-ca-signature", signedStr);if (_isHttps){// set remote certificate Validation auto passServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(remoteCertificateValidate);ServicePointManager.SecurityProtocol =  SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;}}/// <summary>/// 计算content-md5/// </summary>/// <param name="body"></param>/// <returns>base64后的content-md5</returns>private string computeContentMd5(string body){MD5 md5 = new MD5CryptoServiceProvider();byte[] result = md5.ComputeHash(System.Text.Encoding.UTF8.GetBytes(body));return Convert.ToBase64String(result);}/// <summary>/// 远程证书验证/// </summary>/// <param name="sender"></param>/// <param name="cert"></param>/// <param name="chain"></param>/// <param name="error"></param>/// <returns>验证是否通过，始终通过</returns>private bool remoteCertificateValidate(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors error){return true;}/// <summary>/// 计算HMACSHA265/// </summary>/// <param name="str">待计算字符串</param>/// <param name="secret">平台APPSecet</param>/// <returns>HMAXH265计算结果字符串</returns>private string computeForHMACSHA256(string str, string secret){var encoder = new System.Text.UTF8Encoding();byte[] secretBytes = encoder.GetBytes(secret);byte[] strBytes = encoder.GetBytes(str);var opertor = new HMACSHA256(secretBytes);byte[] hashbytes = opertor.ComputeHash(strBytes);return Convert.ToBase64String(hashbytes);}/// <summary>/// 计算签名字符串/// </summary>/// <param name="method">HTTP请求方法，如“POST”</param>/// <param name="url">接口Url，如/artemis/api/resource/v1/org/advance/orgList</param>/// <param name="header">请求头</param>/// <returns>签名字符串</returns>private string buildSignString(string method, string url, Dictionary<string, string> header){StringBuilder sb = new StringBuilder();sb.Append(method.ToUpper()).Append("\n");if (null != header){if (null != header["Accept"]){sb.Append((string)header["Accept"]);sb.Append("\n");}if (header.Keys.Contains("Content-MD5") && null != header["Content-MD5"]){sb.Append((string)header["Content-MD5"]);sb.Append("\n");}if (null != header["Content-Type"]){sb.Append((string)header["Content-Type"]);sb.Append("\n");}if (header.Keys.Contains("Date") && null != header["Date"]){sb.Append((string)header["Date"]);sb.Append("\n");}}// build and add header to signstring signHeader = buildSignHeader(header);sb.Append(signHeader);sb.Append(url);return sb.ToString();}/// <summary>/// 返回字符流/// </summary>/// <param name="response"></param>/// <returns></returns>private string ResponseToStr(byte[] bytes){var res = "";res = System.Text.Encoding.UTF8.GetString(bytes);return res;}/// <summary>/// 计算签名头/// </summary>/// <param name="header">请求头</param>/// <returns>签名头</returns>private string buildSignHeader(Dictionary<string, string> header){Dictionary<string, string> sortedDicHeader = new Dictionary<string, string>();sortedDicHeader = header;var dic = from objDic in sortedDicHeader orderby objDic.Key ascending select objDic;StringBuilder sbSignHeader = new StringBuilder();StringBuilder sb = new StringBuilder();foreach (KeyValuePair<string, string> kvp in dic){if (kvp.Key.Replace(" ", "").Contains("x-ca-")){sb.Append(kvp.Key + ":");if (!string.IsNullOrWhiteSpace(kvp.Value)){sb.Append(kvp.Value);}sb.Append("\n");if (sbSignHeader.Length > 0){sbSignHeader.Append(",");}sbSignHeader.Append(kvp.Key);}}header.Add("x-ca-signature-headers", sbSignHeader.ToString());return sb.ToString();}}
}

海康视频接入

海康视频接入有两种方式，第一种是有web插件，第二种是无web插件。无web插件弄起来特别的麻烦，所以我们主要讲第一种。

获取摄像头Id

选择分页获取监控点资源

选择个数多一点

下载海康Web插件

海康开发平台下载地址

视频Web 插件 V1.5.2直链下载地址

下载完成之后我们可以看到Demo，选择合适的自己试一下

原生Html导入

我这里已经封装好了，我直接拿出来了

网页设置

我将很多无关都隐藏了

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><script src="~/Scripts/jquery-1.12.4.min.js"></script><script src="~/Scripts/jsencrypt.min.js"></script><script src="~/Scripts/web-control_1.2.5.min.js"></script>........</head>
<body>.....<div id="playWnd" class="playWnd"></div>
</body>
</html>

CSS

.playWnd {margin: 30px 0 0 150px;width: 1000px; /*播放容器的宽和高设定*/height: 600px;border: 1px solid red;
}

JS封装

注意，我这个是绑定id的，必须要div的id为playWnd

封装代码

//海康div示例
//<div id = "playWnd" class="playWnd" style = "left: 109px; top: 133px;" ></div >/*** 海康摄像头帮助类*/
let oWebControl = new WebControl();
class Hik_Class {/*** * @param {Ip地址} ip* @param {端口} port* @param {密钥} appkey* @param {密码} secret* @param {摄像头Id} cameraIndexCode*/constructor(ip, port, appkey, secret, cameraIndexCode) {this.ip = ip;this.port = port;this.appkey = appkey;this.secret = secret;this.cameraIndexCode = cameraIndexCode}Init() {var that = thisoWebControl = new WebControl({szPluginContainer: "playWnd",                       // 指定容器idiServicePortStart: 15900,                           // 指定起止端口号，建议使用该值iServicePortEnd: 15900,szClassId: "23BF3B0A-2C56-4D97-9C03-0CB103AA8F11",   // 用于IE10使用ActiveX的clsidcbConnectSuccess: function () {                     // 创建WebControl实例成功											oWebControl.JS_StartService("window", {         // WebControl实例创建成功后需要启动服务dllPath: "./VideoPluginConnect.dll"         // 值"./VideoPluginConnect.dll"写死 }).then(function () {                           // 启动插件服务成功oWebControl.JS_SetWindowControlCallback({   // 设置消息回调cbIntegrationCallBack: cbIntegrationCallBack});oWebControl.oDocOffset.top = 95;//设置你的x,y偏移，因为海康插件无法识别多页面的浏览器位置oWebControl.oDocOffset.left = 280;oWebControl.JS_CreateWnd("playWnd", 1000, 600, { bEmbed: true }).then(function () { //JS_CreateWnd创建视频播放窗口，宽高可设定that.init();  // 创建播放实例成功后初始化});}, function () { // 启动插件服务失败});},cbConnectError: function () { // 创建WebControl实例失败oWebControl = null;$("#playWnd").html("插件未启动，正在尝试启动，请稍候...");WebControl.JS_WakeUp("VideoWebPlugin://"); // 程序未启动时执行error函数，采用wakeup来启动程序initCount++;if (initCount < 3) {setTimeout(function () {initPlugin();}, 3000)} else {$("#playWnd").html("插件启动失败，请检查插件是否安装！");}},cbConnectClose: function (bNormalClose) {// 异常断开：bNormalClose = false// JS_Disconnect正常断开：bNormalClose = true	console.log("cbConnectClose");oWebControl = null;$("#playWnd").html("插件未启动，正在尝试启动，请稍候...");WebControl.JS_WakeUp("VideoWebPlugin://");initCount++;if (initCount < 3) {setTimeout(function () {initPlugin();}, 3000)} else {$("#playWnd").html("插件启动失败，请检查插件是否安装！");}}});}init() {var that =thisgetPubKey(function () {// 请自行修改以下变量值			var appkey = that.appkey;                           //综合安防管理平台提供的appkey，必填var secret = setEncrypt(that.secret);   //综合安防管理平台提供的secret，必填var ip = that.ip;                           //综合安防管理平台IP地址，必填var playMode = 0;                                  //初始播放模式：0-预览，1-回放var port = that.port;                                    //综合安防管理平台端口，若启用HTTPS协议，默认443var snapDir = "D:\\SnapDir";                       //抓图存储路径var videoDir = "D:\\VideoDir";                     //紧急录像或录像剪辑存储路径var layout = "1x1";                                //playMode指定模式的布局var enableHTTPS = 1;                               //是否启用HTTPS协议与综合安防管理平台交互，这里总是填1var encryptedFields = 'secret';					   //加密字段，默认加密领域为secretvar showToolbar = 0;                               //是否显示工具栏，0-不显示，非0-显示var showSmart = 0;                                 //是否显示智能信息（如配置移动侦测后画面上的线框），0-不显示，非0-显示var buttonIDs = "0,16,256,257,258,259,260,512,513,514,515,516,517,768,769";  //自定义工具条按钮// 请自行修改以上变量值	oWebControl.JS_RequestInterface({funcName: "init",argument: JSON.stringify({appkey: appkey,                            //API网关提供的appkeysecret: secret,                            //API网关提供的secretip: ip,                                    //API网关IP地址playMode: playMode,                        //播放模式（决定显示预览还是回放界面）port: port,                                //端口layout: layout,                            //布局enableHTTPS: enableHTTPS,                  //是否启用HTTPS协议encryptedFields: encryptedFields,          //加密字段showToolbar: showToolbar,                  //是否显示工具栏showSmart: showSmart,                      //是否显示智能信息buttonIDs: buttonIDs                       //自定义工具条按钮})}).then(function (oData) {oWebControl.JS_Resize(1000, 600);  // 初始化后resize一次，规避firefox下首次显示窗口后插件窗口未与DIV窗口重合问题});});}Connect() {console.log("开始连接海康摄像头")var cameraIndexCode = this.cameraIndexCode;     //获取输入的监控点编号值，必填var streamMode = 0;                                     //主子码流标识：0-主码流，1-子码流var transMode = 1;                                      //传输协议：0-UDP，1-TCPvar gpuMode = 0;                                        //是否启用GPU硬解，0-不启用，1-启用var wndId = -1;                                         //播放窗口序号（在2x2以上布局下可指定播放窗口）cameraIndexCode = cameraIndexCode.replace(/(^\s*)/g, "");cameraIndexCode = cameraIndexCode.replace(/(\s*$)/g, "");oWebControl.JS_RequestInterface({funcName: "startPreview",argument: JSON.stringify({cameraIndexCode: cameraIndexCode,                //监控点编号streamMode: streamMode,                         //主子码流标识transMode: transMode,                           //传输协议gpuMode: gpuMode,                               //是否开启GPU硬解wndId: wndId                                     //可指定播放窗口})})}Close() {if (oWebControl != null) {oWebControl.JS_HideWnd();   // 先让窗口隐藏，规避可能的插件窗口滞后于浏览器消失问题 oWebControl.JS_Disconnect().then(function () {  // 断开与插件服务连接成功},function () {  // 断开与插件服务连接失败});}}
}//声明公用变量
var initCount = 0;
var pubKey = '';// 设置窗口控制回调
function setCallbacks() {oWebControl.JS_SetWindowControlCallback({cbIntegrationCallBack: cbIntegrationCallBack});
}// 推送消息
function cbIntegrationCallBack(oData) {showCBInfo(JSON.stringify(oData.responseMsg));
}//获取公钥
function getPubKey(callback) {oWebControl.JS_RequestInterface({funcName: "getRSAPubKey",argument: JSON.stringify({keyLength: 1024})}).then(function (oData) {console.log(oData);if (oData.responseMsg.data) {pubKey = oData.responseMsg.data;callback()}})
}//RSA加密
function setEncrypt(value) {var encrypt = new JSEncrypt();encrypt.setPublicKey(pubKey);return encrypt.encrypt(value);
}// 监听resize事件，使插件窗口尺寸跟随DIV窗口变化
$(window).resize(function () {if (oWebControl != null) {oWebControl.JS_Resize(1000, 600);setWndCover();}
});// 监听滚动条scroll事件，使插件窗口跟随浏览器滚动而移动
$(window).scroll(function () {if (oWebControl != null) {oWebControl.JS_Resize(1000, 600);setWndCover();}
});// 设置窗口裁剪，当因滚动条滚动导致窗口需要被遮住的情况下需要JS_CuttingPartWindow部分窗口
function setWndCover() {var iWidth = $(window).width();var iHeight = $(window).height();var oDivRect = $("#playWnd").get(0).getBoundingClientRect();var iCoverLeft = (oDivRect.left < 0) ? Math.abs(oDivRect.left) : 0;var iCoverTop = (oDivRect.top < 0) ? Math.abs(oDivRect.top) : 0;var iCoverRight = (oDivRect.right - iWidth > 0) ? Math.round(oDivRect.right - iWidth) : 0;var iCoverBottom = (oDivRect.bottom - iHeight > 0) ? Math.round(oDivRect.bottom - iHeight) : 0;iCoverLeft = (iCoverLeft > 1000) ? 1000 : iCoverLeft;iCoverTop = (iCoverTop > 600) ? 600 : iCoverTop;iCoverRight = (iCoverRight > 1000) ? 1000 : iCoverRight;iCoverBottom = (iCoverBottom > 600) ? 600 : iCoverBottom;oWebControl.JS_RepairPartWindow(0, 0, 1001, 600);    // 多1个像素点防止还原后边界缺失一个像素条if (iCoverLeft != 0) {oWebControl.JS_CuttingPartWindow(0, 0, iCoverLeft, 600);}if (iCoverTop != 0) {oWebControl.JS_CuttingPartWindow(0, 0, 1001, iCoverTop);    // 多剪掉一个像素条，防止出现剪掉一部分窗口后出现一个像素条}if (iCoverRight != 0) {oWebControl.JS_CuttingPartWindow(1000 - iCoverRight, 0, iCoverRight, 600);}if (iCoverBottom != 0) {oWebControl.JS_CuttingPartWindow(0, 600 - iCoverBottom, 1000, iCoverBottom);}
}//视频预览功能
$("#startPreview").click(function () {});//停止全部预览
$("#stopAllPreview").click(function () {oWebControl.JS_RequestInterface({funcName: "stopAllPreview"});
});// 标签关闭
$(window).unload(function () {if (oWebControl != null) {oWebControl.JS_HideWnd();   // 先让窗口隐藏，规避可能的插件窗口滞后于浏览器消失问题 oWebControl.JS_Disconnect().then(function () {  // 断开与插件服务连接成功},function () {  // 断开与插件服务连接失败});}
});

使用

//声明
let hik_Class = new Hik_Class(你的外网ip地址,你的端口,
你的AppKey,
你的Secret,
你的摄像头Id)//使用hik_Class.Init()//创建窗体
hik_Class.Connect()//连接摄像头并输入视频流
hik_Class.Close()//关闭窗体

设置成功！