项目介绍:
本实例主要是接收安检闸机的数据解析并显示到界面上,只做功能实现,不做界面美化
硬件:闸机一个、网线一根、电脑主机
开发环境:vs2017 系统:win10
涵盖知识点:tcp通讯、文件写入、多线程,委托、类型转换等
软件操作流程:
点击开始监听按钮,8999要是未被占用则开启监听,然后人刷身份证通过安检闸机就可以接收到数据
数据格式截图:
安检闸机图片:
知识点介绍:
1. socket.Listen(10); 官方给出的解释:挂起连接队列的最大长度。
连接队列,即连接池,也就是要保证挂起的连接池中至少要有10个连接 我解释一下,为什么要提前准备10个挂起的连接,原因就是每当一个新用户接入进来时,就需要立即创建一个socket,创建也需要时间和消耗系统资源,这样就会影响高并发的性能 ,用不用,先放那,用的时候直接取即
2. Socket clientSocket = socket.Accept();
AcceptSocket是同步的,你可以用异步通讯的BeginAcceptSocket或者用多线程。没有请求到达,就会“卡”住,术语叫程序阻塞,socket同步通讯就是这个步骤,执行到AcceptSocket就会阻塞等待请求,直到有请求到达时,才执行后面的语句,并且处理这个请求
3. while (true) 因为组要一直监听,所以得死循环;
4. 开启一个后来线程,不然主界面会假死 new Thread(delegate ()
{主体代码;
})
{ IsBackground = true }.Start();
5.从其它线程访问主线程控件需要委托,不然界面不会有数据的 this.Invoke((EventHandler)delegate
{
richTextBox1.Text += “”;
});
完整代码如下:
using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Text;
using System.Drawing;
namespace TcpRecive
{
public partial class mainForm : Form
{
public mainForm()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
textBox1.Text = "8999";
}
public void tcpRecive(int port)
{
if (PortIsUse(port))
{
label1.Text = "端口" + port.ToString() + "被占用"; return;
}
else label1.Text = "端口" + port.ToString() + "没有占用,监听已开启";
new Thread(delegate ()
{
int recv;//定义接收数据长度变量
//IPAddress ip = IPAddress.Parse("192.168.1.119");//接收端所在IP 192.168.1.119换成127.0.0.1不可以为什么?
IPEndPoint ipEnd = new IPEndPoint(IPAddress.Any, port);//接收端所监听的接口,ip也可以用IPAddress.Any
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//初始化一个Socket对象
socket.Bind(ipEnd);//绑定套接字到一个IP地址和一个端口上(bind());
//官方给出的解释:挂起连接队列的最大长度。
//连接队列,即连接池,也就是要保证挂起的连接池中至少要有10个连接
//我解释一下,为什么要提前准备10个挂起的连接,原因就是每当一个新用户接入进来时,就需要立即创建一个socket,创建也需要时间和消耗系统资源,这样就会影响高并发的性能
//,用不用,先放那,用的时候直接取即可
socket.Listen(10);
while (true)
{
try
{
byte[] data = new byte[70000];//对data清零
Socket clientSocket = socket.Accept(); //一旦接受连接,创建一个客户端
recv = clientSocket.Receive(data);// 或者clientSocket.Receive(data, data.Length, SocketFlags.None);获取收到的数据的长度
if (recv == 0) //如果收到的数据长度小于0,则退出
break;
//string stringData = Encoding.ASCII.GetString(data);
string stringData = Encoding.UTF8.GetString(data);
dataDecode(data);
fileWrite(DateTime.Now.ToString("yy-MM-dd hh:mm:ss") + "\n" + stringData);
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
})
{ IsBackground = true }.Start();
}
/// <summary>
/// 字节数组转16进制字符串
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public static string byteToHexStr(byte[] bytes)
{
string returnStr = "";
if (bytes != null)
{
for (int i = 0; i < bytes.Length; i++)
{
returnStr += bytes[i].ToString("X2");
}
}
return returnStr;
}
public void dataDecode(byte[] data)
{
int dataL = 0, isPass = 0, nameL = 0, ethnicL = 0, sexL = 0, birthdayL = 0, adressL = 0, cardNoL = 0, startTimeL = 0, endTimeL = 0, cardImageL = 0, captureImageL = 0;
string item = "", name = "", ethnic = "", sex = "", birthday = "", adress = "", cardNo = "", startTime = "", endTime = "";
dataL = BitConverter.ToInt32(data, 0);//数据包大小,低字节在前面,高字节在后面
isPass = BitConverter.ToInt32(data, 4);//人证核验结果
nameL = BitConverter.ToInt32(data, 8);//姓名长度
name = Encoding.UTF8.GetString(data, 12, nameL);//姓名
ethnicL = BitConverter.ToInt32(data, 12 + nameL);//民族长度
ethnic = Encoding.UTF8.GetString(data, 16 + nameL, ethnicL);//民族
sexL = BitConverter.ToInt32(data, 16 + nameL + ethnicL);//性别长度
sex = Encoding.UTF8.GetString(data, 20 + nameL+ ethnicL,sexL);//性别
birthdayL = BitConverter.ToInt32(data, 20 + nameL + ethnicL + sexL);
birthday = Encoding.UTF8.GetString(data, 24 + nameL + ethnicL+sexL,birthdayL);//出生日期
adressL = BitConverter.ToInt32(data, 24 + nameL + ethnicL + sexL + birthdayL);
adress = Encoding.UTF8.GetString(data, 28 + nameL + ethnicL + sexL+birthdayL, adressL);//地址
cardNoL = BitConverter.ToInt32(data, 28 + nameL + ethnicL + sexL + birthdayL + adressL);
cardNo = Encoding.UTF8.GetString(data, 32 + nameL + ethnicL + sexL + birthdayL+adressL, cardNoL);//身份证号码
startTimeL = BitConverter.ToInt32(data, 32 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL);
startTime = Encoding.UTF8.GetString(data, 36 + nameL + ethnicL + sexL + birthdayL + adressL+ cardNoL, startTimeL);//身份证起始时间
endTimeL = BitConverter.ToInt32(data, 36 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL);
endTime = Encoding.UTF8.GetString(data, 40 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL+ startTimeL, endTimeL);//身份证终止时间
if (isPass == 1)
item = "人证核验:成功" + "\n姓名:" + name + "\n民族:" + ethnic + "\n性别:" + sex + "\n出生日期:" + birthday +
"\n地址:" + adress + "\n身份证号码:" + cardNo + "\n身份证起始时间:" + startTime + "\n身份证终止时间:" + endTime;
else
item = "人证核验:失败" + "\n姓名:" + name + "\n民族:" + ethnic + "\n性别:" + sex + "\n出生日期:" + birthday +
"\n地址:" + adress + "\n身份证号码:" + cardNo + "\n身份证起始时间:" + startTime + "\n身份证终止时间:" + endTime;
cardImageL = BitConverter.ToInt32(data, 40 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL + endTimeL);
MemoryStream ms1 = new MemoryStream(data, 44 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL + endTimeL, cardImageL);
captureImageL = BitConverter.ToInt32(data, 44 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL + endTimeL + cardImageL);
MemoryStream ms2 = new MemoryStream(data, 48 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL + endTimeL+cardImageL, captureImageL);
//ms.Write(data, 44 + nameL + ethnicL + sexL + birthdayL + adressL + cardNoL + startTimeL + endTimeL, cardImageL);
Image img1 = Image.FromStream(ms1);
Image img2 = Image.FromStream(ms2);
this.Invoke((EventHandler)delegate
{
richTextBox1.Text = item;
pictureBox1.Image = img1; //更新在窗体控件上
pictureBox2.Image = img2;
});
ms1.Flush(); ms2.Flush();
ms1.Close(); ms2.Close();
ms1.Dispose(); ms2.Dispose();
}
public void fileWrite(string str)
{
if (!File.Exists("info.txt"))
File.Create("info.txt").Close();//创建文件并关闭
StreamWriter sw = new StreamWriter("info.txt",true);//向文件追加数据
sw.WriteLine(str);
sw.Close();
}
//通过 IPGlobalProperties来获取本机的网络连接的信息,并通过GetActiveTcpListeners找到已用端口,进而可以知道所需的端口是否已被占用
public static bool PortIsUse(int port)
{
bool isUse = false;
IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties();
IPEndPoint[] ipEndPoints = ipProperties.GetActiveTcpListeners();//找到已用端口
foreach (IPEndPoint endPoint in ipEndPoints)
{
if (endPoint.Port == port)//判断是否存在
{
isUse= true;
break;
}
}
return isUse;
}
private void button1_Click(object sender, EventArgs e)
{
tcpRecive(int.Parse(textBox1.Text));
}
}
}
运行结果: