文章目录
- 前言
- 相关网址
- 综合安防管理平台
- 网址
- 获取Appkey和Secret/密码和密钥
- 测试
- 个人魔改工具类
- 海康视频接入
- 获取摄像头Id
- 下载海康Web插件
- 原生Html导入
- 网页设置
- JS封装
- 封装代码
- 使用
- 设置成功！
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。
综合安防管理平台
我这里用的是综合安防管理平台
网址
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 object
StringBuilder 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URL
WebRequest 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 object
StringBuilder 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-timestamp
string 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-nonce
string nonce = System.Guid.NewGuid().ToString();
header.Add("x-ca-nonce", nonce);
// x-ca-key
header.Add("x-ca-key", _appkey);
// build string to sign
string strToSign = buildSignString(isPost ? "POST" : "GET", url, header);
string signedStr = computeForHMACSHA256(strToSign, _secret);
// x-ca-signature
header.Add("x-ca-signature", signedStr);
if (_isHttps)
{
// set remote certificate Validation auto pass
ServicePointManager.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 sign
string 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
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 = this
oWebControl = new WebControl({
szPluginContainer: "playWnd", // 指定容器id
iServicePortStart: 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clsid
cbConnectSuccess: 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 {
$("#playWnd").html("插件启动失败，请检查插件是否安装！");
}
}
});
}
init() {
var that =this
getPubKey(function () {
// 请自行修改以下变量值
var appkey = that.appkey; //综合安防管理平台提供的appkey，必填
var secret = setEncrypt(that.secret); //综合安防管理平台提供的secret，必填
var ip = that.ip; //综合安防管理平台IP地址，必填
var playMode = 0; //初始播放模式：0-预览，1-回放
var port = that.port; //综合安防管理平台端口，若启用HTTPS协议，默认443
var snapDir = "D:\\SnapDir"; //抓图存储路径
var videoDir = "D:\\VideoDir"; //紧急录像或录像剪辑存储路径
var layout = "1x1"; //playMode指定模式的布局
var enableHTTPS = 1; //是否启用HTTPS协议与综合安防管理平台交互，这里总是填1
var encryptedFields = 'secret'; //加密字段，默认加密领域为secret
var showToolbar = 0; //是否显示工具栏，0-不显示，非0-显示
var showSmart = 0; //是否显示智能信息（如配置移动侦测后画面上的线框），0-不显示，非0-显示
var buttonIDs = "0,16,256,257,258,259,260,512,513,514,515,516,517,768,769"; //自定义工具条按钮
// 请自行修改以上变量值
oWebControl.JS_RequestInterface({
funcName: "init",
argument: JSON.stringify({
appkey: appkey, //API网关提供的appkey
secret: secret, //API网关提供的secret
ip: ip, //API网关IP地址
playMode: playMode, //播放模式（决定显示预览还是回放界面）
port: port, //端口
layout: layout, //布局
enableHTTPS: enableHTTPS, //是否启用HTTPS协议
encryptedFields: encryptedFields, //加密字段
showToolbar: showToolbar, //是否显示工具栏
showSmart: showSmart, //是否显示智能信息
buttonIDs: buttonIDs //自定义工具条按钮
})
}).then(function (oData) {
oWebControl.JS_Resize(1000, 600); // 初始化后resize一次，规避firefox下首次显示窗口后插件窗口未与DIV窗口重合问题
});
});
}
Connect() {
console.log("开始连接海康摄像头")
var cameraIndexCode = this.cameraIndexCode; //获取输入的监控点编号值，必填
var streamMode = 0; //主子码流标识：0-主码流，1-子码流
var transMode = 1; //传输协议：0-UDP，1-TCP
var gpuMode = 0; //是否启用GPU硬解，0-不启用，1-启用
var wndId = -1; //播放窗口序号（在2x2以上布局下可指定播放窗口）
cameraIndexCode = cameraIndexCode.replace(/(^\s*)/g, "");
cameraIndexCode = cameraIndexCode.replace(/(\s*$)/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！
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