mes-client/UAS_Web/tool/RequestHandler.cs

using CefSharp;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace UAS_Web.tool
{
    class RequestHandler : IRequestHandler
    {
        public event Action<byte[]> NotifyMsg;

        PrinterList print;
        /// <summary>
        /// 拦截指定请求
        /// </summary>
        /// <param name="browserControl"></param>
        /// <param name="browser"></param>
        /// <param name="frame"></param>
        /// <param name="request"></param>
        /// <param name="response"></param>
        /// <returns></returns>
        IResponseFilter IRequestHandler.GetResourceResponseFilter(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response)
        {
            MessageFilter filter;
            switch (request.Url.Substring(request.Url.LastIndexOf("/") + 1))
            {
                case "default?type=printer":
                    filter = FilterManager.CreateFilter(request.Identifier.ToString()) as MessageFilter;
                    return filter;
                case "zplPrint.action":
                    filter = FilterManager.CreateFilter(request.Identifier.ToString()) as MessageFilter;
                    return filter;
                default:
                    break;
            }
            return null;
        }

        /// <summary>
        /// 完成响应后获取Js返回的数据
        /// </summary>
        /// <param name="browserControl"></param>
        /// <param name="browser"></param>
        /// <param name="frame"></param>
        /// <param name="request"></param>
        /// <param name="response"></param>
        /// <param name="status"></param>
        /// <param name="receivedContentLength"></param>
        void IRequestHandler.OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, UrlRequestStatus status, long receivedContentLength)
        {
            MessageFilter filter;
            string str;
            switch (request.Url.Substring(request.Url.LastIndexOf("/") + 1))
            {
                case "default?type=printer":
                    print = new PrinterList(browser) { StartPosition = FormStartPosition.CenterScreen };
                    print.Controls["Confirm"].Click += RequestHandler_Click;
                    print.ShowDialog();
                    filter = FilterManager.GetFileter(request.Identifier.ToString()) as MessageFilter;
                    str = System.Text.Encoding.UTF8.GetString(filter.dataAll.ToArray());
                    //filter_NotifyData(filter.dataAll.ToArray());
                    Console.WriteLine(str);
                    break;
                case "zplPrint.action":
                    filter = FilterManager.GetFileter(request.Identifier.ToString()) as MessageFilter;
                    str = System.Text.Encoding.UTF8.GetString(filter.dataAll.ToArray());
                    Console.WriteLine(str);

                    PrintHelper.SendStringToPrinter(print.Controls["Printer"].Text, "");
                    //filter_NotifyData(filter.dataAll.ToArray());
                    Dictionary<string, object> data = ToDictionary(str);
                    string PrintCode = data["data"].ToString();
                    List<string> PrintList = new List<string>();
                    int PrintTime = Regex.Matches(PrintCode, "XA").Count;
                    for (int i = 0; i < PrintTime; i++)
                    {
                        PrintList.Add(PrintCode.Substring(0, PrintCode.IndexOf("XZ") + 2));
                        PrintCode = PrintCode.Substring(PrintCode.IndexOf("XZ") + 2);
                    }
                    for (int i = 0; i < PrintList.Count; i++)
                    {
                        PrintHelper.SendStringToPrinter(print.Controls["Printer"].Text, PrintList[i]);
                    }
                    break;
                default:
                    break;
            }
        }

        private void RequestHandler_Click(object sender, EventArgs e)
        {
            print.PrintDoc.PrinterSettings.PrinterName = print.Controls["Printer"].Text;
            Graphics gr = print.PrintDoc.PrinterSettings.CreateMeasurementGraphics();
            print.browser.MainFrame.ExecuteJavaScriptAsync("(function(value) {dpi=value})('" + gr.DpiX + "')");
            print.browser.FocusedFrame.ExecuteJavaScriptAsync("console.log(this);");
            print.browser.FocusedFrame.ExecuteJavaScriptAsync("onGridItemClick();");
 
            print.Close();
        }

        void filter_NotifyData(byte[] data)
        {
            if (NotifyMsg != null)
            {
                NotifyMsg(data);
            }
        }

        public bool GetAuthCredentials(IWebBrowser browserControl, IBrowser browser, IFrame frame, bool isProxy, string host, int port, string realm, string scheme, IAuthCallback callback)
        {
            return false;
        }

        public bool OnBeforeBrowse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, bool isRedirect)
        {
            return false;
        }

        public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            return CefReturnValue.Continue;
        }

        public bool OnCertificateError(IWebBrowser browserControl, IBrowser browser, CefErrorCode errorCode, string requestUrl, ISslInfo sslInfo, IRequestCallback callback)
        {
            return false;
        }

        public bool OnOpenUrlFromTab(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, WindowOpenDisposition targetDisposition, bool userGesture)
        {
            return false;
        }

        public void OnPluginCrashed(IWebBrowser browserControl, IBrowser browser, string pluginPath)
        {

        }

        public bool OnProtocolExecution(IWebBrowser browserControl, IBrowser browser, string url)
        {
            return false;
        }

        public bool OnQuotaRequest(IWebBrowser browserControl, IBrowser browser, string originUrl, long newSize, IRequestCallback callback)
        {
            return false;
        }

        public void OnRenderProcessTerminated(IWebBrowser browserControl, IBrowser browser, CefTerminationStatus status)
        {
        }

        public void OnRenderViewReady(IWebBrowser browserControl, IBrowser browser)
        {

        }

        public void OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, UrlRequestStatus status, long receivedContentLength)
        {

        }

        public void OnResourceRedirect(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, ref string newUrl)
        {

        }

        bool IRequestHandler.OnResourceResponse(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response)
        {
            return false;
        }

        public void GetData()
        {

        }

        public static Dictionary<string, object> ToDictionary(string JsonData)
        {
            object Data = null;
            Dictionary<string, object> Dic = new Dictionary<string, object>();
            if (JsonData.StartsWith("["))
            {
                //如果目标直接就为数组类型，则将会直接输出一个Key为List的List<Dictionary<string, object>>集合 
                //使用示例List<Dictionary<string, object>> ListDic = (List<Dictionary<string, object>>)Dic["List"]; 
                List<Dictionary<string, object>> List = new List<Dictionary<string, object>>();
                MatchCollection ListMatch = Regex.Matches(JsonData, @"{[\s\S]+?}");//使用正则表达式匹配出JSON数组 
                foreach (Match ListItem in ListMatch)
                {
                    List.Add(ToDictionary(ListItem.ToString()));//递归调用 
                }
                Data = List;
                Dic.Add("List", Data);
            }
            else
            {
                MatchCollection Match = Regex.Matches(JsonData, @"""(.+?)"": {0,1}(\[[\s\S]+?\]|null|"".+?""|-{0,1}\d*)");//使用正则表达式匹配出JSON数据中的键与值 
                foreach (Match item in Match)
                {
                    try
                    {
                        if (item.Groups[2].ToString().StartsWith("["))
                        {
                            //如果目标是数组，将会输出一个Key为当前Json的List<Dictionary<string, object>>集合 
                            //使用示例List<Dictionary<string, object>> ListDic = (List<Dictionary<string, object>>)Dic["Json中的Key"]; 
                            List<Dictionary<string, object>> List = new List<Dictionary<string, object>>();
                            MatchCollection ListMatch = Regex.Matches(item.Groups[2].ToString(), @"{[\s\S]+?}");//使用正则表达式匹配出JSON数组 
                            foreach (Match ListItem in ListMatch)
                            {
                                List.Add(ToDictionary(ListItem.ToString()));//递归调用 
                            }
                            Data = List;
                        }
                        else if (item.Groups[2].ToString().ToLower() == "null") Data = null;//如果数据为null(字符串类型),直接转换成null
                        else Data = item.Groups[2].ToString(); //数据为数字、字符串中的一类，直接写入 
                        Dic.Add(item.Groups[1].ToString(), Data);
                    }
                    catch { }
                }
            }
            return Dic;
        }
    }
}