mes-client/UAS_PRINT/Form2.cs

using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Printing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace UAS_PRINT
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private static HttpListener httpPostRequest = new HttpListener();
        private Thread ThrednHttpPostRequest;
        private void Form2_Load(object sender, EventArgs e)
        {
            httpPostRequest.Prefixes.Add("http://localhost:9100/");
            httpPostRequest.Start();

            ThrednHttpPostRequest = new Thread(new ThreadStart(httpPostRequestHandle));
            ThrednHttpPostRequest.Start();
            MyNotifyIcon.ShowBalloonTip(30,"提示","程序启动",ToolTipIcon.Info);
        }


        private string getRequestPayload(HttpListenerContext req)
        {

            return "";
        }

        private static void httpPostRequestHandle()
        {
            while (true)
            {
                HttpListenerContext requestContext = httpPostRequest.GetContext();
                Thread threadsub = new Thread(new ParameterizedThreadStart((requestcontext) =>
                {
                    HttpListenerContext request = (HttpListenerContext)requestcontext;
                    
                    //获取Post请求中的参数和值帮助类
                    HttpListenerPostParaHelper httppost = new HttpListenerPostParaHelper(request);
                    //获取Post过来的参数和数据
                    List<HttpListenerPostValue> lst = httppost.GetHttpListenerPostValue();

                        //Response
                        request.Response.StatusCode = 200;
                        request.Response.Headers.Add("Access-Control-Allow-Origin", "*");
                        request.Response.ContentType = "application/json";
                        requestContext.Response.ContentEncoding = Encoding.UTF8;
                        
                    string json = "";
                    if (requestContext.Request.Url.PathAndQuery == "/write")
                    {
                        Stream stream = requestContext.Request.InputStream;
                        var memoryStream = new MemoryStream();
                        //将基础流写入内存流
                        const int bufferLength = 2 * 1024 * 1024;
                        byte[] buffera = new byte[bufferLength];
                        int actual = stream.Read(buffera, 0, bufferLength);
                        if (actual > 0)
                        {
                            memoryStream.Write(buffera, 0, actual);
                        }
                        memoryStream.Position = 0;
                        string req = System.Text.Encoding.UTF8.GetString(buffera);
                        if (req.Contains("\"" + "chooseprintername" + "\""))
                        {
                            req = req.Remove(req.IndexOf("device"), req.IndexOf("data") - 2);
                            PrintHandler.vendorZplPrint(req);
                        }
                        else
                        {
                            PrintHandler.zplprint(req);
                        }
                    }
                    else if (requestContext.Request.Url.PathAndQuery == "/default?type=printer")
                    {
                        PrintDocument PrintDoc = new PrintDocument();
                        string sDefault = PrintDoc.PrinterSettings.PrinterName;//默认打印机名
                        //byte[] buffer = System.Text.Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(new { success = "true", msg = "提交成功" }));
                        json = new JObject(
                            new JObject(
                                new JProperty("deviceType", "printer"),
                                new JProperty("uid", sDefault),
                                new JProperty("provider", "com.zebra.ds.webdriver.desktop.provider.DefaultDeviceProvider"),
                                new JProperty("name", sDefault),
                                new JProperty("connection", "driver"),
                                new JProperty("version", 2),
                                new JProperty("manufacturer", "Zebra Technologies")
                                )
                            ).ToString();
                    }
                    else if (requestContext.Request.Url.PathAndQuery == "/available")
                    {
                        List<string> PrintC = new List<string>();

                        foreach (string sPrint in PrinterSettings.InstalledPrinters)//获取所有打印机名称
                        {
                            PrintC.Add(sPrint);
                        }
                        json = new JObject(
                            new JProperty(
                                "printer", new JArray
                                (
                                    from sPrint in PrintC
                                    select new JObject(
                                            new JObject(
                                        new JProperty("deviceType", "printer"),
                                        new JProperty("uid", sPrint),
                                        new JProperty("provider", "com.zebra.ds.webdriver.desktop.provider.DefaultDeviceProvider"),
                                        new JProperty("name", sPrint),
                                        new JProperty("connection", "driver"),
                                        new JProperty("version", 2),
                                        new JProperty("manufacturer", "Zebra Technologies")
                                                )
                                        )
                                )
                                )
                            ).ToString();
                    }
                    else
                    {
                        json = Newtonsoft.Json.JsonConvert.SerializeObject(new { success = "true", msg = "提交成功" });
                    }
                        byte[] buffer = System.Text.Encoding.UTF8.GetBytes(json);
                        //byte[] buffer = System.Text.Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(new { success = "true", msg = "提交成功" }));
                        request.Response.ContentLength64 = buffer.Length;
                        var output = request.Response.OutputStream;
                        output.Write(buffer, 0, buffer.Length);
                        output.Close();
                    
                }));
                threadsub.Start(requestContext);
            }
        }

        private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ThrednHttpPostRequest.Abort();
            httpPostRequest.Close();
            this.Close();
            this.Dispose();
        }
    }
}