class ServerThread implements Runnable { Socket socket; char[] cbuf; public ServerThread(Socket socket) { super(); this.socket = socket; } @Override public void run() { try { BufferedReader netIn2 = new BufferedReader(new InputStreamReader( socket.getInputStream())); System.out.println(netIn2.readLine()); // 从网络套接字获取输出流,建立打印输出流 PrintWriter netOut2 = new PrintWriter(socket.getOutputStream()); netOut2.write("你好\n"); netOut2.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } public class ServerTest { public static void main(String[] args) throws Exception { int PORT = 8888; // 侦听端口 // 创建ServerSocket ServerSocket serverSocket = new ServerSocket(PORT); // 开始循环 while (true) { // 等待连接 Socket socket = (1) ; // 处理链接的线程类 ServerThread st = new ServerThread(socket); // 启动线程处理 new Thread(st).start(); } } }

package com.test.demo; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.net.Socket; import java.util.Vector; public class ServerThread extends Thread { private Socket sk; private static Vector<Socket> vs = null; public ServerThread(Socket sk, Vector<Socket> vs) { this.sk = sk; this.vs = vs; } @Override public void run() { while (true) { // 循环读取信息内容 try { InputStream is = sk.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); String str = br.readLine(); for(Socket s:vs) { if(null!=s) { if(s!=sk) { OutputStream os = s.getOutputStream(); OutputStreamWriter osw=new OutputStreamWriter(os); BufferedWriter bw=new BufferedWriter(osw); bw.write(str); bw.newLine(); bw.flush(); } } } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }

这是一个继承自Thread的ServerThread类，它负责处理服务器与客户端之间的通信。在run()方法中，它不断地从客户端的输入流中读取消息内容，并将其发送给所有已连接的客户端。在发送消息时，它遍历了一个Vector容器，...

import java.io.; import java.net.; import java.util.; import java.awt.; public class Server { public static void main(String args[]) { ServerSocket server=null; ServerThread thread; Socket you=null; while(true) { try{ server=new ServerSocket(4331);//创建在端口4331上负责监听的 ServerSocket对象 } catch(IOException e1) { System.out.println("正在监听"); } try{ you=server.accept(); // server返回和客户端相连接的Socket对象 System.out.println("客户的地址:"+you.getInetAddress()); } catch (IOException e) { System.out.println("正在等待客户"); } if(you!=null) { new ServerThread(you).start(); } else{ continue; } } } } class ServerThread extends Thread { Socket socket; ObjectInputStream in=null; ObjectOutputStream out=null; String s=null; ServerThread(Socket t) { socket=t; try { out=new ObjectOutputStream(socket.getOutputStream()); //socket返回输出流。 in=new ObjectInputStream(socket.getInputStream()); //socket返回输入流。 } catch (IOException e) {} } public void run() { TextArea text=new TextArea("你好,我是服务器",12,12); try{ out.writeObject(text); } catch (IOException e) { System.out.println("客户离开"); } } }

然后创建一个新的ServerThread对象，并将该Socket对象作为参数传入，启动一个新的线程来处理与该客户端的通信。 2. ServerThread类继承自Thread类，实现了与客户端的通信。在构造方法中，服务器端创建了一个...

解释下列代码while(true) { Socket socket = ss.accept() ; sockets.add(socket); Thread thread = new Thread(new ServerThread(socket)) ; thread.start(); }

ServerThread是一个自定义的类，它实现了Runnable接口，用于处理客户端连接的数据交互。由于这段代码是一个无限循环，因此服务器将一直等待新的客户端连接，并为每个连接创建一个新线程进行处理。当有新的客户端...

优化下面代码package Y; import java.io.; import java.net.; import java.time.; import java.util.; public class Shiyan5Server { public static void main(String[] args) { ServerSocket server = null; Sy5ServerThread thread; Socket you = null; while(true) { try { server = new ServerSocket(2010); } catch (IOException e) { System.out.println("正在监听"); // TODO: handle exception } try { System.out.println("等待客户呼叫"); you = server.accept(); System.out.println("客户的地址"+you.getInetAddress()); } catch (Exception e) { // TODO: handle exception System.out.println("正在等待客户"); } if (you != null) { new Sy5ServerThread(you).start(); } } } } class Sy5ServerThread extends Thread{ Socket socket; DataOutputStream out = null; DataInputStream in = null; String s = null; Sy5ServerThread(Socket t) { socket = t; try { out = new DataOutputStream(socket.getOutputStream()); in = new DataInputStream(socket.getInputStream()); } catch (Exception e) { // TODO: handle exception } } public void run() { while(true) { try { String S1 = "几点了?"; String S2 = "今天是几号?"; String S3 = "今天是星期几?"; String st = in.readUTF(); if (st.equals(S1)) { LocalTime time = LocalTime.now(); String Time = String.format("%tR", time); out.writeUTF(Time); } else if(st.equals(S2)) { LocalDate date = LocalDate.now(); String Time = String.format("%tm月%td日", date,date); out.writeUTF(Time); }else if (st.equals(S3)) { LocalDate week = LocalDate.now(); String Time = String.format("%tA", week); out.writeUTF(Time); }else { System.out.println("服务结束"); break; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }} } }

public class Shiyan5Server { private static final String S1 = "几点了?"; private static final String S2 = "今天是几号?"; private static final String S3 = "今天是星期几?"; public static void ...

package com.test.demo; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.Vector; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class ServerFr extends JFrame{ public static void main(String[] args) { new ServerFr(); } public ServerFr() { Vector<Socket> vs=new Vector<>(); this.setTitle("服务器"); this.setSize(200,100); this.setDefaultCloseOperation(3); this.setLocationRelativeTo(null); //创建容器 JPanel jpa=new JPanel(); JButton jba=new JButton("启动服务器"); //给按钮添加监听事件 jba.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { ServerSocket ss=new ServerSocket(9090); while(true) { Socket sk = ss.accept(); vs.add(sk); new ServerThread(sk, vs).start(); } } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); jpa.add(jba); //将容器添加到窗体中 this.setContentPane(jpa); this.setVisible(true); } }

这是一个基于Java语言的简单的Socket服务器程序，它创建了一个包含一个按钮的窗体，当点击按钮时，程序会创建一个ServerSocket对象并监听端口号为9090的连接请求。一旦有客户端连接到服务器，它就会创建一个新的线程...

修正以下代码：import java.io.*; import java.net.ServerSocket; import java.net.Socket; import java.util.HashMap; import java.util.Map; import java.util.Scanner; public class Sever { // 保存所有用户的用户名和密码 private static Map<String, String> userMap = new HashMap<>(); // 指定的目录 private static File rootDir = null; // 保存所有登录的用户信息 private static Map<String, String> loginInfo = new HashMap<>(); public static void main(String[] args) throws Exception { // 从配置文件中读取用户信息和目录信息 BufferedReader reader = new BufferedReader(new FileReader("config.txt")); String line = null; while ((line = reader.readLine()) != null) { if (line.startsWith("user:")) { String[] user = line.split(":"); userMap.put(user[1], user[2]); } if (line.startsWith("dir:")) { String[] dir = line.split(":"); rootDir = new File(dir[1]); } } reader.close(); // 启动服务器 ServerSocket serverSocket = new ServerSocket(8000); int count = 0; System.out.println("服务器启动成功！"); while (true) { // 监听客户端连接 Socket socket = serverSocket.accept(); count++; System.out.println("第" + count + "个客户端连接成功！"); // 处理客户端请求 new Thread(new ServerThread(socket)).start();

class ServerThread implements Runnable { private Socket socket; private Map, String> userMap; private File rootDir; private Map, String> loginInfo; public ServerThread(Socket socket, Map, String...

解释代码import java.io.*; import java.net.ServerSocket; import java.net.Socket; import java.util.HashMap; import java.util.Map; import java.util.Scanner; @SuppressWarnings("unused") public class server { // 保存所有用户的用户名和密码 private static Map<String, String> userMap = new HashMap<>(); // 指定的目录 private static File rootDir = null; // 保存所有登录的用户信息 private static Map<String, String> loginInfo = new HashMap<>(); @SuppressWarnings("resource") public static void main(String[] args) throws Exception { // 从配置文件中读取用户信息和目录信息 BufferedReader reader = new BufferedReader(new FileReader("config.txt")); String line = null; while ((line = reader.readLine()) != null) { if (line.startsWith("user:")) { String[] user = line.split(":"); getUserMap().put(user[1], user[2]); } if (line.startsWith("dir:")) { String[] dir = line.split(":"); setRootDir(new File(dir[1])); } } reader.close(); // 启动服务器 ServerSocket serverSocket = new ServerSocket(8000); int count = 0; System.out.println("服务器启动成功！"); while (true) { // 监听客户端连接 Socket socket = serverSocket.accept(); count++; System.out.println("第" + count + "个客户端连接成功！"); // 处理客户端请求 new Thread(new serverthread(socket)).start(); } } public static Map<String, String> getUserMap() { return userMap; } public static void setUserMap(Map<String, String> userMap) { server.userMap = userMap; } public static File getRootDir() { return rootDir; } public static void setRootDir(File rootDir) { server.rootDir = rootDir; } }

6. 在每个线程中，通过 Socket 对象接收客户端的请求，并根据请求的内容来执行相应的操作。总的来说，这个程序的主要功能是实现一个简单的服务器，支持用户登录和文件上传下载等操作。这个代码还有很多可以改进的...

void ProcessServer::onReadyRead() { QByteArray data = m_socket->readAll(); qDebug() << "onReadyRead ********" <<data; QJsonParseError parseError; QJsonDocument requestDoc = QJsonDocument::fromJson(data, &parseError); if (parseError.error == QJsonParseError::NoError && requestDoc.isObject()) { QJsonObject requestJson = requestDoc.object(); QString type = requestJson["moduleType"].toString(); if(modulePerson.compare(type) == 0) { qDebug() << "emit messagToPerson(requestJson[value].toString())"; emit messagToPerson(requestJson["value"].toString()); } else if(moduleRule.compare(type) == 0) { emit messagToRule(requestJson["value"].toString()); } } }上面代码是我用QLocalServer和QLocalSocket进行进程间通信读取数据的函数，这个是http服务端的代码，它在收到界面客户端的数据后会通过信号发出，int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); httpServer httpserver; if (!httpserver.listen(QHostAddress::Any, 8088)) { qCritical() << "Server failed:" << httpserver.errorString(); return 1; } QThread serverThread; ProcessServer server; server.moveToThread(&serverThread); QObject::connect(&httpserver, &httpServer::sig_sendinfo, &server, &ProcessServer::sendMessage); //人员信息变化 QObject::connect(&server, &ProcessServer::messagToPerson, &httpserver, &httpServer::sig_personinfo); //考勤规则信息变化 QObject::connect(&server, &ProcessServer::messagToRule, &httpserver, &httpServer::sig_ruleInfo); QObject::connect(&serverThread, &QThread::started, &server, &ProcessServer::startServer); serverThread.start(); return a.exec(); } 在main函数中进行了连接，连接另一个信号，这个被连接的信号会在void httpServer::incomingConnection(qintptr socketDescriptor) { qDebug() <<"6666666666*******"; QTcpSocket socket = new QTcpSocket(this); socket->setSocketDescriptor(socketDescriptor); HttpConnect connection = new HttpConnect(socket); connect(connection, &HttpConnect::sig_sendMessage, this, &httpServer::handleData); connect(this, &httpServer::sig_personinfo, connection, &HttpConnect::slot_personChange); connect(this, &httpServer::sig_ruleInfo, connection, &HttpConnect::slot_ruleChange); }这个函数中连接一个槽函数，处理接收的数据，现在的问题是incomingConnection这个函数在有http请求后才会调用，所以 QObject::connect(&server, &ProcessServer::messagToPerson, &httpserver, &httpServer::sig_personinfo); QObject::connect(&server, &ProcessServer::messagToRule, &httpserver, &httpServer::sig_ruleInfo);这里连接了信号也接收了，但是incomingConnection没有被调用呢，导致后续的连接不存在，所以槽函数也无法触发，怎么解决

QTcpSocket *socket = new QTcpSocket(this); socket->setSocketDescriptor(socketDescriptor); HttpConnect* connection = new HttpConnect(socket); m_connections.append(connection); // 添加到连接列表 /...

using System; using System.ComponentModel; using System.Net; using System.Text; using System.Windows.Forms; using HslCommunication; using HslCommunication.ModBus; using Newtonsoft.Json; using StackExchange.Redis; using static System.Net.WebRequestMethods; namespace WinFormsApp2 { public partial class Form1 : Form { private ModbusTcpNet plcClient; private TextBox txtResult; private Button btnConnect; private Button btnRead; private Button btnDisconnect; private ComboBox cboRegisterType; private TextBox txtStartAddress; private TextBox txtLength; private Label lblRegisterType; private Label lblStartAddress; private Label lblLength; private CheckBox chkHexFormat; // 添加十六进制格式选项 private BackgroundWorker plcWorker; private HttpListener httpListener; private Thread serverThread; private bool isServerRunning = false; //http://localhost:5000/api/devices 获取所有的IP //http://localhost:5000/api/device?id=device:ip-192.168.1.88 //获取单独IP的数据 private const string ApiBaseUrl = "http://localhost:5000/"; private ConnectionMultiplexer _redisConnection; private IDatabase _redisDb; public Form1() { InitializeHttpServer(); // 添加控件到窗体 InitializeRedis(); // 初始化后台工作组件 plcWorker = new BackgroundWorker(); plcWorker.WorkerSupportsCancellation = true; plcWorker.DoWork += PlcWorker_DoWork; plcWorker.RunWorkerCompleted += PlcWorker_RunWorkerCompleted; InitializeComponent(); // 事件绑定 //btnRead.Click += (s, e) => ReadPLCData(); //btnDisconnect.Click += (s, e) => DisconnectPLC(); ////btnConnect.Click += (s, e) => ConnectToPLC(); // 修改事件绑定 btnRead.Click += (s, e) => StartPlcReading(); btnDisconnect.Click += (s, e) => StopPlcReading(); } // 启动PLC读取 private void StartPlcReading() { if (plcWorker.IsBusy) { AppendResultText("PLC读取已在后台运行"); return; } btnRead.Enabled = false; btnDisconnect.Enabled = true; AppendResultText("启动PLC后台读取..."); // 获取要连接的PLC列表 string[] plcList = txtStartAddress.Text.Split(','); // 启动后台工作 plcWorker.RunWorkerAsync(plcList); } private void InitializeRedis() { var config = new ConfigurationOptions { EndPoints = { "localhost:6379" }, Password = "ymkj", AbortOnConnectFail = false, ConnectRetry = 3, ConnectTimeout = 5000 }; _redisConnection = ConnectionMultiplexer.Connect(config); _redisDb = _redisConnection.GetDatabase(); } // 停止PLC读取 private void StopPlcReading() { if (plcWorker.IsBusy) { plcWorker.CancelAsync(); AppendResultText("正在停止PLC后台读取..."); } else { AppendResultText("没有正在运行的PLC读取任务"); } btnRead.Enabled = true; btnDisconnect.Enabled = false; } // 后台工作执行 private void PlcWorker_DoWork(object sender, DoWorkEventArgs e) { while (true) { BackgroundWorker worker = (BackgroundWorker)sender; string[] plcList = (string[])e.Argument; foreach (string plcInfo in plcList) { // 检查是否请求取消 if (worker.CancellationPending) { e.Cancel = true; return; } string[] plcDetails = plcInfo.Split(':'); if (plcDetails.Length < 2) { AppendResultText($"无效的PLC配置: {plcInfo}"); continue; } string ip = plcDetails[0]; string port = plcDetails[1]; try { AppendResultText($"连接PLC: {ip}:{port}"); ConnectToPLC(ip, port); if (plcClient == null) { AppendResultText($"无法连接到PLC: {ip}:{port}"); continue; } AppendResultText($"开始读取PLC数据: {ip}:{port}"); // 读取数据 ReadMBits(0, 2005); ReadXBits(0, 35); ReadYBits(0, 31); ReadDRegisters(1, 3428); AppendResultText($"完成读取PLC数据: {ip}:{port}"); } catch (Exception ex) { AppendResultText($"读取PLC数据异常({ip}:{port}): {ex.Message}"); } finally { // 添加延迟，避免过于频繁的连接 Thread.Sleep(1000); } // 检查是否请求取消 if (worker.CancellationPending) { e.Cancel = true; return; } } } } // 后台工作完成 private void PlcWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.Cancelled) { AppendResultText("PLC后台读取已取消"); } else if (e.Error != null) { AppendResultText($"PLC后台读取发生错误: {e.Error.Message}"); } else { AppendResultText("PLC后台读取完成"); } btnRead.Enabled = true; btnDisconnect.Enabled = false; } private void InitializeHttpServer() { httpListener = new HttpListener(); httpListener.Prefixes.Add(ApiBaseUrl); // 添加API路由 this.Controls.Add(new Label { Text = $"API服务地址: {ApiBaseUrl}", Location = new System.Drawing.Point(0, 0), AutoSize = true }); // 添加服务器控制按钮 var btnStartServer = new Button { Text = "启动API服务", Location = new System.Drawing.Point(430, 0), AutoSize = true }; btnStartServer.Click += (s, e) => StartHttpServer(); var btnStopServer = new Button { Text = "停止API服务", Location = new System.Drawing.Point(590, 0), AutoSize = true }; btnStopServer.Click += (s, e) => StopHttpServer(); this.Controls.Add(btnStartServer); this.Controls.Add(btnStopServer); } // 启动HTTP服务器 private void StartHttpServer() { if (isServerRunning) return; try { httpListener.Start(); isServerRunning = true; serverThread = new Thread(ListenForRequests); serverThread.IsBackground = true; serverThread.Start(); AppendResultText($"HTTP服务器已启动，监听地址: {ApiBaseUrl}"); } catch (Exception ex) { AppendResultText($"启动HTTP服务器失败: {ex.Message}"); } } // 停止HTTP服务器 private void StopHttpServer() { if (!isServerRunning) return; isServerRunning = false; httpListener.Stop(); AppendResultText("HTTP服务器已停止"); } // 监听HTTP请求 private void ListenForRequests() { while (isServerRunning) { try { var context = httpListener.GetContext(); ThreadPool.QueueUserWorkItem(ProcessRequest, context); } catch (Exception ex) { AppendResultText($"HTTP监听异常: {ex.Message}"); } } } // 处理HTTP请求 private void ProcessRequest(object state) { var context = state as HttpListenerContext; var request = context.Request; var response = context.Response; // 统一设置CORS头，允许来自 http://localhost:8080 的请求 response.Headers.Add("Access-Control-Allow-Origin", ""); response.Headers.Add("Access-Control-Allow-Methods", ""); response.Headers.Add("Access-Control-Allow-Headers", ""); response.Headers.Add("Access-Control-Max-Age", "86400"); // 处理OPTIONS请求 if (request.HttpMethod == "OPTIONS") { response.StatusCode = 200; response.Close(); return; } try { var path = request.Url.AbsolutePath.ToLower(); switch (path) { case "/api/devices": HandleGetDevices(context); break; case "/api/device": HandleGetDevice(context); break; default: SendResponse(response, "Not Found", 404); break; } } catch (Exception ex) { SendResponse(response, $"Error: {ex.Message}", 500); } finally { } } // 处理获取所有设备请求 private void HandleGetDevices(HttpListenerContext context) { var response = context.Response; // 使用全局Redis连接 if (_redisDb == null || _redisConnection == null) { SendResponse(response, "Redis连接未初始化", 500); return; } try { // 获取所有设备键 var server = _redisConnection.GetServer("localhost", 6379); var deviceKeys = server.Keys(pattern: "device:").ToArray(); // 构建设备列表 var devices = new List<object>(); foreach (var key in deviceKeys) { // 直接使用key.ToString()避免多次转换 string keyStr = key.ToString(); // 更安全的IP提取方式 string ip = keyStr.StartsWith("device:ip-") ? keyStr.Substring("device:ip-".Length) : keyStr; devices.Add(new { id = keyStr, ip }); } var result = new { success = true, count = devices.Count, devices }; SendJsonResponse(response, result); } catch (Exception ex) { SendResponse(response, $"获取设备列表失败: {ex.Message}", 500); } } // 处理获取特定设备数据请求 private void HandleGetDevice(HttpListenerContext context) { var response = context.Response; var request = context.Request; var deviceId = request.QueryString["id"]; // 验证设备ID参数 if (string.IsNullOrEmpty(deviceId)) { SendResponse(response, "缺少设备ID参数", 400); return; } // 使用全局Redis连接 if (_redisDb == null || _redisConnection == null) { SendResponse(response, "Redis连接未初始化", 500); return; } try { // 检查设备是否存在 if (!_redisDb.KeyExists(deviceId)) { SendResponse(response, $"设备不存在: {deviceId}", 404); return; } // 获取设备所有数据 var entries = _redisDb.HashGetAll(deviceId); // 转换为字典 var data = new Dictionary<string, string>(); foreach (var entry in entries) { data[entry.Name] = entry.Value; } var result = new { success = true, device = deviceId, data }; SendJsonResponse(response, result); } catch (Exception ex) { // 更详细的错误日志 AppendResultText($"获取设备数据失败({deviceId}): {ex}"); SendResponse(response, $"获取设备数据失败: {ex.Message}", 500); } } // 发送JSON响应 private void SendJsonResponse(HttpListenerResponse response, object data) { try { response.ContentType = "application/json"; response.ContentEncoding = Encoding.UTF8; var json = JsonConvert.SerializeObject(data); var buffer = Encoding.UTF8.GetBytes(json); response.ContentLength64 = buffer.Length; response.OutputStream.Write(buffer, 0, buffer.Length); } finally { if (response.OutputStream.CanWrite) { response.OutputStream.Close(); } } } // 发送文本响应 private void SendResponse(HttpListenerResponse response, string message, int statusCode) { try { // 记录错误信息 AppendResultText($"[HTTP {statusCode}] {message}"); response.StatusCode = statusCode; response.ContentType = "text/plain"; response.ContentEncoding = Encoding.UTF8; var buffer = Encoding.UTF8.GetBytes(message); response.ContentLength64 = buffer.Length; response.OutputStream.Write(buffer, 0, buffer.Length); } finally { response.OutputStream.Close(); } } private void ReadMBits(int start, int length) { // 使用数字地址读取M寄存器（辅助继电器） // M寄存器通常映射到Modbus的线圈地址（0x） // 起始地址 = start + 0（根据PLC型号可能需要偏移） OperateResult<bool[]> readResult = plcClient.ReadCoil(start.ToString(), (ushort)length); if (readResult.IsSuccess) { StringBuilder sb = new StringBuilder(); var hashEntries = new List<HashEntry>(); sb.AppendLine($"M寄存器读取成功 (M{start} - M{start + length - 1}):"); for (int i = 0; i < readResult.Content.Length; i++) { sb.AppendLine($"M{start + i}: {readResult.Content[i]}"); string field = $"M{start + i}"; string value = readResult.Content[i].ToString(); hashEntries.Add(new HashEntry(field, value)); } AppendResultText(sb.ToString()); SetRedis(hashEntries); } else { AppendResultText($"M寄存器读取失败: {readResult.Message}"); } } private void ReadXBits(int start, int length) { // 使用数字地址读取X寄存器（输入继电器） // X寄存器通常映射到Modbus的离散输入地址（1x） // 起始地址 = start + 0（根据PLC型号可能需要偏移） OperateResult<bool[]> readResult = plcClient.ReadDiscrete(start.ToString(), (ushort)length); if (readResult.IsSuccess) { StringBuilder sb = new StringBuilder(); var hashEntries = new List<HashEntry>(); sb.AppendLine($"X寄存器读取成功 (X{start} - X{start + length - 1}):"); for (int i = 0; i < readResult.Content.Length; i++) { sb.AppendLine($"X{start + i}: {readResult.Content[i]}"); string field = $"X{start + i}"; string value = readResult.Content[i].ToString(); hashEntries.Add(new HashEntry(field, value)); } AppendResultText(sb.ToString()); SetRedis(hashEntries); } else { AppendResultText($"X寄存器读取失败: {readResult.Message}"); } } private void ReadYBits(int start, int length) { // 使用数字地址读取Y寄存器（输出继电器） // Y寄存器通常映射到Modbus的线圈地址（0x） // 起始地址 = start + 0（根据PLC型号可能需要偏移） OperateResult<bool[]> readResult = plcClient.ReadCoil(start.ToString(), (ushort)length); if (readResult.IsSuccess) { StringBuilder sb = new StringBuilder(); var hashEntries = new List<HashEntry>(); sb.AppendLine($"Y寄存器读取成功 (Y{start} - Y{start + length - 1}):"); for (int i = 0; i < readResult.Content.Length; i++) { sb.AppendLine($"Y{start + i}: {readResult.Content[i]}"); string field = $"Y{start + i}"; string value = readResult.Content[i].ToString(); hashEntries.Add(new HashEntry(field, value)); } AppendResultText(sb.ToString()); SetRedis(hashEntries); } else { AppendResultText($"Y寄存器读取失败: {readResult.Message}"); } } private void ReadDRegisters(int start, int length) { // 使用数字地址读取D寄存器（数据寄存器） // D寄存器通常映射到Modbus的保持寄存器地址（4x） // 起始地址 = start + 0（根据PLC型号可能需要偏移） OperateResult<short[]> readResult = plcClient.ReadInt16(start.ToString(), (ushort)length); if (readResult.IsSuccess) { StringBuilder sb = new StringBuilder(); var hashEntries = new List<HashEntry>(); sb.AppendLine($"D寄存器读取成功 (D{start} - D{start + length - 1}):"); for (int i = 0; i < readResult.Content.Length; i++) { //if (chkHexFormat.Checked) //{ // sb.AppendLine($"D{start + i}: 0x{readResult.Content[i]:X4} (十进制: {readResult.Content[i]})"); // string field = $"D{start + i}"; // string value = readResult.Content[i].ToString(); // hashEntries.Add(new HashEntry(field, value)); //} //else //{ sb.AppendLine($"D{start + i}: {readResult.Content[i]}"); string field = $"D{start + i}"; string value = readResult.Content[i].ToString(); hashEntries.Add(new HashEntry(field, value)); //} } AppendResultText(sb.ToString()); SetRedis(hashEntries); } else { AppendResultText($"D寄存器读取失败: {readResult.Message}"); } } private void ConnectToPLC(string ip, string duration) { try { // 创建Modbus TCP客户端（替换为实际PLC的IP和端口） plcClient = new ModbusTcpNet(ip, int.Parse(duration)); // 尝试连接 OperateResult connectResult = plcClient.ConnectServer(); if (connectResult.IsSuccess) { AppendResultText("PLC连接成功!"); btnRead.Enabled = true; btnDisconnect.Enabled = true; } else { AppendResultText($"连接失败: {connectResult.Message}"); plcClient = null; } } catch (Exception ex) { AppendResultText($"连接异常: {ex.Message}"); } } private void AppendResultText(string text) { if (txtResult.InvokeRequired) { txtResult.Invoke(new Action<string>(AppendResultText), text); } else { txtResult.AppendText($"[{DateTime.Now:HH:mm:ss}] {text}\r\n"); txtResult.ScrollToCaret(); } } protected override void OnFormClosing(FormClosingEventArgs e) { base.OnFormClosing(e); plcClient?.ConnectClose(); } //private void SetRedis(List<HashEntry> hashEntries) //{ // var config = new ConfigurationOptions // { // EndPoints = { "localhost:6379" }, // Password = "ymkj", // 确保密码正确 // AbortOnConnectFail = false, // ConnectTimeout = 10000, // 可选：增加连接超时时间 // SyncTimeout = 10000 // 可选：增加同步操作超时时间 // }; // using (var redis = ConnectionMultiplexer.Connect(config)) // { // var db = redis.GetDatabase(); // // 读取数据 // // 获取全部字段（返回HashEntry数组） // db.HashSet("device:"+"ip-"+plcClient.IpAddress, hashEntries.ToArray()); // } //} private void SetRedis(List<HashEntry> hashEntries) { try { string deviceKey = $"device:ip-{plcClient.IpAddress}"; _redisDb.HashSet(deviceKey, hashEntries.ToArray()); } catch (Exception ex) { AppendResultText($"Redis存储失败: {ex.Message}"); } } } } Form1.cs 设计没显示出来

serverThread.Start(); isServerRunning = true; } catch (SocketException ex) when (ex.ErrorCode == 10048) { AppendResultText($"端口已被占用: {ApiBaseUrl}"); } } #### 关键改进说明 1. **PLC...

int TCPSvr_Create(void) { int iRet = -1; int iServerSocket; struct sockaddr_in stServeraddr; g_iExit = 0; if(( iServerSocket = socket(AF_INET, SOCK_STREAM,0)) < 0) { cmn_PrtError("TCPSvr_Create failed") } bzero(&stServeraddr,sizeof(stServeraddr)); stServeraddr.sin_family = AF_INET; stServeraddr.sin_addr.s_addr = htonl(INADDR_ANY); stServeraddr.sin_port = htons(8080); if(bind(iServerSocket,(struct sockaddr )&stServeraddr,sizeof(stServeraddr)) < 0) { cmn_PrtError("bind error"); } if(listen(iServerSocket,cmnDfn_MAX_CLIENT) < 0) { cmn_PrtError("listen error"); } iRet = 0; _Exit: if(iServerSocket >= 0) { close(iServerSocket); } return iRet; } int TCPSvr_Destroy(IN int iServerSocket, IN pthread_t ServerThread) { int iRet = -1; g_iExit = -1; if(iServerSocket != -1) { close(iServerSocket); iServerSocket = -1; } if(ServerThread != -1) { pthread_join(ServerThread,NULL); } iRet = 0; return iRet; }检查代码

这里检查socket的返回值是否正确，如果失败的话调用cmn_PrtError，但没有看到return语句，这样即使创建socket失败，代码还会继续往下执行，这会导致后面的bind和listen可能操作一个无效的socket描述符。这是一个问题...

Unity socket.Accept()被阻塞

serverThread.IsBackground = true; serverThread.Start(); } private void ServerLoop() { Socket serverSocket = new Socket(/* 配置参数 */); while (isRunning) { Socket client = serverSocket....

#include "mainwindow.h" #include "ui_mainwindow.h" #include "tcpservercontroller.h" #include <QMetaObject> #include <QMessageBox> #include <QListWidgetItem> #include <QTime> #include <QDebug> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { ui->setupUi(this); //打印主线程地址 qDebug() << "主线程地址:" << QThread::currentThread(); appendMessage(QString("主线程地址: 0x%1").arg(reinterpret_cast<quintptr>(QThread::currentThread()), 0, 16)); qRegisterMetaType<qintptr>("qintptr"); qRegisterMetaType<QAbstractSocket::SocketError>("QAbstractSocket::SocketError"); // 初始化服务器控制器和线程 serverController = new TcpServerController(); serverThread = new QThread(this); // 打印serverThread地址 qDebug() << "serverThread地址:" << serverThread; appendMessage(QString("serverThread地址: 0x%1").arg(reinterpret_cast<quintptr>(serverThread), 0, 16)); // 打印serverController所在线程地址（移动前） qDebug() << "serverController移动前所在线程:" << serverController->thread(); appendMessage(QString("serverController移动前所在线程: 0x%1") .arg(reinterpret_cast<quintptr>(serverController->thread()), 0, 16)); // 将服务器控制器移动到新线程 serverController->moveToThread(serverThread); // 打印serverController所在线程地址（移动后） qDebug() << "serverController移动后所在线程:" << serverController->thread(); appendMessage(QString("serverController移动后所在线程: 0x%1") .arg(reinterpret_cast<quintptr>(serverController->thread()), 0, 16)); // 连接信号槽 connect(serverController, &TcpServerController::newMessage, this, &MainWindow::appendMessage); connect(serverController, &TcpServerController::clientConnected, this, &MainWindow::clientConnected); connect(serverController, &TcpServerController::clientDisconnected, this, &MainWindow::clientDisconnected); // 启动线程 serverThread->start(); appendMessage("主线程ID: " + QString::number((quint64)QThread::currentThreadId(), 16)); } MainWindow::~MainWindow() { if(serverRunning) { on_startStopButton_clicked(); // 如果服务器正在运行，则停止它 } serverThread->quit(); serverThread->wait(); delete serverController; delete ui; } void MainWindow::on_startStopButton_clicked() { if(!serverRunning) { quint16 port = static_cast<quint16>(ui->portSpinBox->value()); // 通过线程安全的信号调用服务器启动 QMetaObject::invokeMethod(serverController, [this, port]() { if(serverController->startServer(port)) { serverRunning = true; ui->startStopButton->setText("停止服务器"); appendMessage("服务器已启动"); } }, Qt::QueuedConnection); } else { // 通过线程安全的信号调用服务器停止 QMetaObject::invokeMethod(serverController, &TcpServerController::stopServer, Qt::QueuedConnection); serverRunning = false; ui->startStopButton->setText("启动服务器"); appendMessage("服务器已停止"); // 清空客户端列表 clients.clear(); ui->clientList->clear(); } } void MainWindow::appendMessage(const QString &msg) { ui->logArea->append(QTime::currentTime().toString("[HH:mm:ss] ") + msg); } void MainWindow::clientConnected(qintptr descriptor) { QString clientInfo = QString("客户端 %1").arg(descriptor); clients[descriptor] = clientInfo; updateClientList(); appendMessage(clientInfo + " 已连接"); } void MainWindow::clientDisconnected(qintptr descriptor) { if(clients.contains(descriptor)) { QString clientInfo = clients[descriptor]; clients.remove(descriptor); updateClientList(); appendMessage(clientInfo + " 已断开"); } } void MainWindow::updateClientList() { ui->clientList->clear(); for(const QString &client : clients.values()) { ui->clientList->addItem(client); } } 解析这段代码

serverThread=newQThread(this);-创建TcpServerController对象（服务器控制逻辑）和QThread对象（新线程）。####(5)打印对象地址并移动到新线程cpp//打印serverController和serverThread的地址（调试信息...

02.《大数据》配套之二：-数据采集与预处理PPT.ppt

router.replace跟router.push的区别

在学习案例过程中，遇到关于router.replace跟router.push的使用问题。网上查询一番后，遇到一老哥的答案解释相对容易理解：可以把路由router想象成一个访问记录的栈，router.replace() 是替换掉栈顶，而router.push() 则是向栈中再堆入一个新记录。一般情况下，要做前进后退的浏览记录管理的，基本上都是用router.push()，但是也是有一些特殊情...

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