修改以下代码：package demo; import java.awt.; import java.awt.event.; import javax.swing.*; public class NumGuess extends Frame{ int k ; Label lbTitle; Label lbGuess; TextField textNum; Button btn_ok; Button btn_cancel; public void fun(){ k = (int)(Math.random()*1000); System.out.println("k="+k); this.setTitle("猜数字游戏"); this.setSize(260,170); this.setLayout(null); textNum = new TextField(); lbTitle = new Label("猜数字游戏"); lbTitle = new Label("请输入你猜的游戏"); btn_ok = new Button("确定"); btn_cancel = new Button("取消");//取消按钮 //设置每个组件在窗口中的摆放位置及长度和宽度 lbTitle.setBounds(100,50,80,20); lbGuess.setBounds(40,80,120,20); textNum.setBounds(170,80,50,20); btn_ok.setBounds(45,120,80,25); btn_cancel.setBounds(135,120,80,25); btn_ok.addActionListener( new ActionListener(){ public void actionPerformed(ActionEvent e){ try(string guessNum = textNum;getText ();//要取单行编辑框里的内容int g = Integer,parseInt(guessNum)://将获取到的单行编辑里的内容由字符串转换成整型信 6 if(g>k)( g JoptionPane.showMessageDialog(null，"满大7!"): )else if(g<k)iJOptionPane.showMessagebialog(null，"精小了!") else(JoptionPane,showyessageDialog(null，"恭喜你，满中了，数字为"+g); k = (int)(Math.random()*1000)System.out.println("new k-"+k)*textNum.setText《""); ] catch (NumberFornataxception ex)joptionpane showqepialog(mul1.cextNum，setTert《" } public static void main(String[] args) { // TODO Auto-generated method stub } }

jsb.zip_awt_event_import java.awt._java 记事本

简单的记事本的JAVA程序，//导入awt包，event包 import java.awt.*

JAVA 程序源代码 import java.applet.;import java.awt.

import java.awt.*"表明这段源代码涉及了Java编程语言，特别是与Applet和图形用户界面（GUI）相关的部分。import语句是Java中用于引入库或包的机制，以便能够使用其中的类和方法。在给定的描述中，没有更多的具体...

导入库： javax.imageio.ImageIO：用于读取和保存图像 javax.swing：用于创建图形用户界面 java.awt：用于图像处理 java.awt.event：用于处理事

java.awt.event：用于处理事件。 java.io：用于文件操作。 java.util.Random：用于生成高斯噪声。创建主窗口： ImageProcessor 类继承自 JFrame，创建主窗口。设置窗口标题、大小、默认关闭操作，并使其居中显示...

ServerFr.java 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); } }分析此代码

这段代码实现了一个简单的服务器，它创建了一个 JFrame 窗口，包含一个启动服务器的按钮。当用户点击按钮时，程序会创建一个 ServerSocket 对象，并侦听指定的端口（这里是 9090）。当有客户端连接时，服务器会创建...

package com.test.demo; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedWriter; import java.io.IOException; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.net.InetAddress; import java.net.Socket; import java.net.UnknownHostException; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextArea; import javax.swing.JTextField; public class ClientFr extends JFrame { public static void main(String[] args) { new ClientFr(); } private Socket sk = null; public ClientFr() { this.setTitle("客户端"); this.setSize(300, 400); this.setDefaultCloseOperation(3); this.setLocationRelativeTo(null); // 添加容器 JPanel jpa = new JPanel(); JTextArea jta = new JTextArea(10, 20); JTextField jtfa = new JTextField(14); JButton jbb = new JButton("发送"); JButton jba = new JButton("连接服务器"); jba.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { sk = new Socket(InetAddress.getByName("127.0.0.1"), 9090); new ClientThread(sk, jtfa); } catch (UnknownHostException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); jbb.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { OutputStream os = sk.getOutputStream(); OutputStreamWriter osw = new OutputStreamWriter(os); BufferedWriter bw = new BufferedWriter(osw); bw.write(jtfa.getText()); bw.newLine(); bw.flush(); } catch (Exception e1) { e1.printStackTrace(); } } }); jpa.add(jba); jpa.add(jta); jpa.add(jtfa); jpa.add(jbb); this.setContentPane(jpa); this.setVisible(true); } }

这是一段 Java 代码，实现了一个简单的客户端程序，可以连接服务器并发送消息。用户可以在界面上输入消息，并点击“发送”按钮将消息发送给服务器。同时，用户也可以点击“连接服务器”按钮连接到服务器。该程序使用...

为什么以下代码构件JButton，JLabel不显示package com.experiment; import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; /** * 使用JDialog对话框显示问候语 */ @SuppressWarnings("all") public class demo14 { public static void main(String[] args) { JFrame frame = new JFrame("问候"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); frame.setSize(500, 300); frame.setLocationRelativeTo(null); JLabel label = new JLabel("请输入您的姓名："); JTextField jTextField = new JTextField(15); JPanel panel = new JPanel(); frame.setContentPane(panel); JButton button = new JButton("确定"); panel.add(label); panel.add(jTextField); panel.add(button); } }

以下是修改后的代码： package com.experiment; import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; /** * 使用JDialog对话框显示问候语 */ @SuppressWarnings...

import java.awt.BorderLayout;import java.awt.CardLayout;import java.awt.Container;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;public class CardLayoutDemo extends JFrame implements ActionListener { private static final long serialVersionUID = 1L; private Container container; private CardLayout cardLayout; private JPanel cardPanel; private JButton btnFirst, btnPrev, btnNext, btnLast; public CardLayoutDemo() { setTitle("CardLayout Demo"); setSize(500, 500); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); init(); setVisible(true); } private void init() { container = getContentPane(); cardLayout = new CardLayout(); cardPanel = new JPanel(cardLayout); container.add(cardPanel, BorderLayout.CENTER); for (int i = 1; i <= 5; i++) { JButton btn = new JButton("Card " + i); cardPanel.add(btn, "card" + i); } JPanel btnPanel = new JPanel(); btnFirst = new JButton("First"); btnPrev = new JButton("Previous"); btnNext = new JButton("Next"); btnLast = new JButton("Last"); btnFirst.addActionListener(this); btnPrev.addActionListener(this); btnNext.addActionListener(this); btnLast.addActionListener(this); btnPanel.add(btnFirst); btnPanel.add(btnPrev); btnPanel.add(btnNext); btnPanel.add(btnLast); container.add(btnPanel, BorderLayout.SOUTH); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == btnFirst) { cardLayout.first(cardPanel); } else if (e.getSource() == btnPrev) { cardLayout.previous(cardPanel); } else if (e.getSource() == btnNext) { cardLayout.next(cardPanel); } else if (e.getSource() == btnLast) { cardLayout.last(cardPanel); } } public static void main(String[] args) { new CardLayoutDemo(); }}，这个代码要怎么用，怎么在eclipse里面建工程，需要建哪些工程，并且请对代码逐行解释

这段代码演示了如何使用Java Swing中的CardLayout布局管理器。CardLayout布局管理器允许在同一区域中显示一组组件，但仅显示其中的一个组件。通过使用按钮进行导航，用户可以轻松地在组件之间切换。下面是代码的逐行...

package demo1; import com.fazecast.jSerialComm.SerialPort; public class TemperatureController { private final TemperatureMonitorGUI gui; private final String portName; private SerialPort serialPort; private boolean running = false; public TemperatureController(TemperatureMonitorGUI gui, String portName) { this.gui = gui; this.portName = portName; } public void start() { new Thread(this::connectSerialPort).start(); } public void stop() { running = false; if (serialPort != null && serialPort.isOpen()) { serialPort.closePort(); } } private void connectSerialPort() { serialPort = SerialPort.getCommPort(portName); System.out.println("尝试连接串口: " + portName); serialPort.setComPortParameters(4800, 8, 2, 0); serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 1000, 0); if (serialPort.openPort()) { System.out.println("✅ 成功打开串口"); gui.setStatus("Connected to " + portName); serialPort.addDataListener(new SerialPortDataListenerImpl(serialPort, gui, this)); } else { System.err.println("❌ 无法打开串口，请检查："); System.err.println(" - 是否被其他程序占用"); System.err.println(" - 是否有权限访问"); System.err.println(" - 是否串口号错误"); gui.setStatus("无法打开串口：" + portName); } } public void updateTemperature(double temperature) { gui.updateTemperature(temperature); } public void startHeating(double targetTemp, int timeLimit) { running = true; new Thread(() -> { int secondsElapsed = 0; double currentTemp = 25.0; while (running && currentTemp < targetTemp && secondsElapsed < timeLimit) { try { Thread.sleep(1000); currentTemp += 1.0; updateTemperature(currentTemp); secondsElapsed++; } catch (InterruptedException e) { e.printStackTrace(); } } running = false; }).start(); } public void stopHeating() { running = false; } } package demo1; import com.fazecast.jSerialComm.SerialPort; import com.fazecast.jSerialComm.SerialPortDataListener; import com.fazecast.jSerialComm.SerialPortEvent; public class SerialPortDataListenerImpl implements SerialPortDataListener { private final TemperatureMonitorGUI gui; private final TemperatureController controller; private final SerialPort serialPort; public SerialPortDataListenerImpl(SerialPort serialPort, TemperatureMonitorGUI gui, TemperatureController controller) { this.serialPort = serialPort; this.gui = gui; this.controller = controller; } @Override public int getListeningEvents() { return SerialPort.LISTENING_EVENT_DATA_AVAILABLE; } @Override public void serialEvent(SerialPortEvent event) { if (event.getEventType() == SerialPort.LISTENING_EVENT_DATA_AVAILABLE) { byte[] newData = new byte[serialPort.bytesAvailable()]; serialPort.readBytes(newData, newData.length); String receivedData = new String(newData).trim(); if (receivedData.startsWith("TEMP:")) { String tempStr = receivedData.substring(5); try { double temperature = Double.parseDouble(tempStr); controller.updateTemperature(temperature); } catch (NumberFormatException ex) { System.err.println("无法解析温度数据: " + tempStr); } } } } } package demo1; import javax.swing.; import java.awt.; import java.awt.event.ActionEvent; public class TemperatureMonitorGUI extends JFrame { private JLabel temperatureLabel; private JLabel statusLabel; private JButton connectButton; private JButton startButton; private JButton stopButton; private JComboBox<String> portComboBox; private TemperatureController controller; public TemperatureMonitorGUI() { setTitle("温度控制系统"); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(new GridLayout(5, 1)); // 串口选择 portComboBox = new JComboBox<>(); refreshPortList(); // 温度显示 temperatureLabel = new JLabel("当前温度: --°C", SwingConstants.CENTER); temperatureLabel.setFont(new Font("Arial", Font.BOLD, 20)); // 状态栏 statusLabel = new JLabel("未连接", SwingConstants.CENTER); // 控制按钮 connectButton = new JButton("连接串口"); startButton = new JButton("开始加热"); stopButton = new JButton("停止加热"); // 添加组件 add(portComboBox); add(temperatureLabel); add(statusLabel); JPanel buttonPanel = new JPanel(new FlowLayout()); buttonPanel.add(connectButton); buttonPanel.add(startButton); buttonPanel.add(stopButton); add(buttonPanel); // 初始化控制器 controller = null; connectButton.addActionListener((ActionEvent e) -> { String selectedPort = (String) portComboBox.getSelectedItem(); if (selectedPort != null) { controller = new TemperatureController(this, selectedPort); controller.start(); } }); startButton.addActionListener((ActionEvent e) -> { if (controller != null) { controller.startHeating(100.0, 60); // 模拟目标温度和时间 } }); stopButton.addActionListener((ActionEvent e) -> { if (controller != null) { controller.stopHeating(); } }); } public void refreshPortList() { portComboBox.removeAllItems(); for (com.fazecast.jSerialComm.SerialPort port : com.fazecast.jSerialComm.SerialPort.getCommPorts()) { portComboBox.addItem(port.getSystemPortName()); } } public void updateTemperature(double temperature) { temperatureLabel.setText(String.format("当前温度: %.1f°C", temperature)); } public void setStatus(String status) { statusLabel.setText(status); } public static void main(String[] args) { SwingUtilities.invokeLater(() -> { new TemperatureMonitorGUI().setVisible(true); }); } } package demo1; import javax.swing.*; public class Main { public static void main(String[] args) { SwingUtilities.invokeLater(() -> { TemperatureMonitorGUI gui = new TemperatureMonitorGUI(); gui.setVisible(true); }); } } 帮我分析这段代码，为什么可以识别串口，却连接不上，并帮我完善一下代码，用户可以在界面自行输入目标温度和加热时间，可以手动停止加热，代码的功能不能少

public class AdvancedTemperatureController { private double targetTemperature; private double heatingTime; private volatile boolean isRunning = true; private SerialPort serialPort; public static...

create database student; use student; create table users( uname varchar(10) primary key, upwd varchar(10) ); insert into users values('admin','1234'); insert into users values('zhou','zhou');package homework7_二_2_20221548; import javax.swing.; import java.awt.; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.; public class Demo { public static void main(String args[]){ MyWindow win=new MyWindow(); } } class MyWindow extends JFrame{ JLabel lbl_name=new JLabel("username"); JLabel lbl_password=new JLabel("password"); JTextField txt_name=new JTextField(15); JTextField txt_password=new JTextField(15); JButton btn1=new JButton("confirm"); JButton btn2=new JButton("cancel"); MyWindow(){ JPanel jp1=new JPanel(); jp1.setLayout(new FlowLayout()); jp1.add(lbl_name); jp1.add(txt_name); jp1.add(lbl_password); jp1.add(txt_password); add(jp1,BorderLayout.CENTER); JPanel jp2=new JPanel(); jp2.setLayout(new FlowLayout()); jp2.add(btn1); jp2.add(btn2); btn1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String txt1=txt_name.getText(); String txt2=txt_password.getText(); String[] username=new String[2]; String[] password=new String[2]; new DemoQuery(username,password); if(txt1.equals(username[0])&&txt2.equals(password[0])) { JOptionPane.showMessageDialog(null,"欢迎您，"+username[0]+"登录"); } else if(txt1.equals(username[1])&&txt2.equals(password[1])){ JOptionPane.showMessageDialog(null,"欢迎您，"+username[1]+"登录"); } else { JOptionPane.showMessageDialog(null,"用户名和密码错误"); txt_name.setText(""); txt_password.setText(""); } } }); add(jp2,BorderLayout.SOUTH); setSize(300,150); setVisible(true); setTitle("the login window"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } } class DemoQuery { public DemoQuery(String[] username,String[] password){ String url = "jdbc:mysql://127.0.0.1:3306/student"; String user = "root", pwd = ""; Connection con; Statement sql; ResultSet rs; try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { System.out.println("test" + e); } try { con = DriverManager.getConnection(url, user, pwd); sql = con.createStatement(); String sqlStatement; sqlStatement = "SELECT From users"; rs = sql.executeQuery(sqlStatement); while (rs.next()) { int i = 0; username[i] = rs.getString("uname"); password[i] = rs.getString("upwd"); System.out.println(username[i]+" "+password[i]); i++; } con.close(); } catch (SQLException e) { System.out.println("数据库操作失败" + e); } } }为什么用户名输入admin，密码输入1234显示登录失败？

修改后的 DemoQuery 类代码如下： java class DemoQuery { public DemoQuery(String[] username,String[] password){ String url = "jdbc:mysql://127.0.0.1:3306/student"; String user = "root", pwd = "";...

package demo1; import javax.swing.; public class Main { public static void main(String[] args) { SwingUtilities.invokeLater(() -> { TemperatureMonitorGUI gui = new TemperatureMonitorGUI(); gui.setVisible(true); }); } } package demo1; import java.util.Arrays; public class ModbusRequestBuilder { public static byte[] buildReadRequest(byte slaveId, int registerAddr) { return new byte[]{ slaveId, 0x03, // 功能码：读保持寄存器 (byte) (registerAddr >> 8), (byte) (registerAddr & 0xFF), 0x00, 0x01 // 读取1个寄存器 }; } public static byte[] buildWriteRequest(byte slaveId, int registerAddr, int value) { return new byte[]{ slaveId, 0x06, // 功能码：写单个寄存器 (byte) (registerAddr >> 8), (byte) (registerAddr & 0xFF), (byte) (value >> 8), (byte) (value & 0xFF) }; } public static byte[] calculateCRC(byte[] data) { int crc = 0xFFFF; for (int pos = 0; pos < data.length; pos++) { crc ^= data[pos] & 0xFF; for (int i = 8; i != 0; i--) { if ((crc & 0x0001) != 0) { crc >>= 1; crc ^= 0xA001; } else { crc >>= 1; } } } return new byte[]{(byte) (crc & 0xFF), (byte) (crc >> 8)}; } public static String bytesToHex(byte[] bytes) { StringBuilder sb = new StringBuilder(); for (byte b : bytes) { sb.append(String.format("%02X ", b)); } return sb.toString().trim(); } } package demo1; public class RegisterAddress { // 测量值类 public static final int TEMP_MEASURED = 0x0000; public static final int HUMIDITY_MEASURED = 0x0001; public static final int RPM_MEASURED = 0x000D; public static final int CO2_MEASURED = 0x0012; public static final int PRESSURE_MEASURED = 0x0013; public static final int O2_MEASURED = 0x00E8; // 控制设定类 public static final int RUN_CONTROL = 0x0002; public static final int TEMP_SETPOINT = 0x0003; public static final int TIMER_SETPOINT = 0x0006; public static final int HUMIDITY_SETPOINT = 0x0019; public static final int RPM_SETPOINT = 0x0018; public static final int LIGHT_GROUP1 = 0x001A; public static final int LIGHT_GROUP2 = 0x001E; public static final int LIGHT_GROUP3 = 0x001F; public static final int CO2_SETPOINT = 0x001B; public static final int O2_SETPOINT = 0x001C; public static final int PRESSURE_SETPOINT = 0x001D; // 状态与报警类 public static final int ALARM_STATUS = 0x000A; public static final int DEVICE_STATUS = 0x000B; // 连续读取 public static final int CONTINUOUS_READ = 0x00F8; } package demo1; import com.fazecast.jSerialComm.SerialPort; import com.fazecast.jSerialComm.SerialPortDataListener; import com.fazecast.jSerialComm.SerialPortEvent; public class SerialPortDataListenerImpl implements SerialPortDataListener { private final SerialPort serialPort; private final TemperatureMonitorGUI gui; private final TemperatureController controller; public SerialPortDataListenerImpl(SerialPort serialPort, TemperatureMonitorGUI gui, TemperatureController controller) { this.serialPort = serialPort; this.gui = gui; this.controller = controller; } @Override public int getListeningEvents() { return SerialPort.LISTENING_EVENT_DATA_AVAILABLE; } @Override public void serialEvent(SerialPortEvent event) { if (event.getEventType() == SerialPort.LISTENING_EVENT_DATA_AVAILABLE) { byte[] responseData = new byte[serialPort.bytesAvailable()]; serialPort.readBytes(responseData, responseData.length); System.out.println("收到响应: " + ModbusRequestBuilder.bytesToHex(responseData)); if (responseData.length >= 5) { int functionCode = responseData[1] & 0xFF; if (functionCode == 0x03 && responseData.length >= 5) { int value = ((responseData[3] & 0xFF) << 8) | (responseData[4] & 0xFF); double temperature = value / 10.0; controller.updateTemperature(temperature); } } } } } package demo1; class SerialRequest { public byte[] data; public boolean isManual; public SerialRequest(byte[] data, boolean isManual) { this.data = data; this.isManual = isManual; } } package demo1; import com.fazecast.jSerialComm.SerialPort; import static demo1.ModbusRequestBuilder.buildReadRequest; import static demo1.ModbusRequestBuilder.buildWriteRequest; import java.util.concurrent.BlockingQueue; import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.ScheduledThreadPoolExecutor; import java.util.concurrent.TimeUnit; public class TemperatureController { private final TemperatureMonitorGUI gui; private final String portName; private final int baudRate; private final int stopBits; private final int parity; private SerialPort serialPort; private volatile boolean running = false; private final BlockingQueue<SerialRequest> requestQueue = new LinkedBlockingQueue<>(); private ScheduledExecutorService queueExecutor; private TemperatureProfileManager profileManager; public TemperatureController(TemperatureMonitorGUI gui, String portName, int baudRate, int stopBits, int parity) { this.gui = gui; this.portName = portName; this.baudRate = baudRate; this.stopBits = stopBits; this.parity = parity; this.profileManager = new TemperatureProfileManager(this); } public void start() { new Thread(this::connectSerialPort).start(); } private void connectSerialPort() { serialPort = SerialPort.getCommPort(portName); serialPort.setComPortParameters(baudRate, 8, stopBits, parity); serialPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 1000, 0); if (serialPort.openPort()) { System.out.println("✅ 成功打开串口"); gui.setStatus("已连接到 " + portName); serialPort.addDataListener(new SerialPortDataListenerImpl(serialPort, gui, this)); startQueueConsumer(); startTemperaturePolling(); } else { System.err.println("❌ 无法打开串口"); gui.setStatus("无法打开串口：" + portName); } } private void startQueueConsumer() { queueExecutor = new ScheduledThreadPoolExecutor(1); queueExecutor.submit(() -> { while (!Thread.interrupted()) { try { SerialRequest request = requestQueue.take(); sendRequest(request.data); if (request.isManual) { Thread.sleep(500); } } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } }); } private void startTemperaturePolling() { queueExecutor.scheduleAtFixedRate(() -> { enqueueRequest(buildReadRequest((byte) 0x01, RegisterAddress.TEMP_MEASURED), false); }, 0, 1, TimeUnit.SECONDS); } public void readRegister(byte slaveId, int registerAddr) { enqueueRequest(buildReadRequest(slaveId, registerAddr), true); } public void writeRegister(byte slaveId, int registerAddr, int value) { enqueueRequest(buildWriteRequest(slaveId, registerAddr, value), true); } private void enqueueRequest(byte[] data, boolean isManual) { requestQueue.offer(new SerialRequest(data, isManual)); } public void sendRequest(byte[] data) { if (serialPort == null || !serialPort.isOpen()) { System.err.println("串口未打开，无法发送数据"); return; } byte[] crc = ModbusRequestBuilder.calculateCRC(data); byte[] fullRequest = new byte[data.length + 2]; System.arraycopy(data, 0, fullRequest, 0, data.length); fullRequest[data.length] = crc[0]; // CRC低字节 fullRequest[data.length + 1] = crc[1]; // CRC高字节 serialPort.writeBytes(fullRequest, fullRequest.length); System.out.println("发送请求: " + ModbusRequestBuilder.bytesToHex(fullRequest)); } public void updateTemperature(double temperature) { gui.updateTemperature(temperature); } public void readActualTemperature(byte slaveId) { enqueueRequest(buildReadRequest(slaveId, RegisterAddress.TEMP_MEASURED), true); } public void readSetTemperature(byte slaveId) { enqueueRequest(buildReadRequest(slaveId, RegisterAddress.TEMP_SETPOINT), true); } public void setTargetTemperature(byte slaveId, float temp) { int value = (int)(temp 10); enqueueRequest(buildWriteRequest(slaveId, RegisterAddress.TEMP_SETPOINT, value), true); } /** * 启动温控逻辑（定值模式） / public void startControl(float targetTemp, int transitionTime) { if (serialPort == null || !serialPort.isOpen()) return; int registerValue = (int)(targetTemp 10); byte[] request = buildWriteRequest((byte) 0x01, RegisterAddress.TEMP_SETPOINT, registerValue); sendRequest(request); System.out.println("开始升温，目标温度：" + targetTemp + "°C，过渡时间：" + transitionTime + "秒"); new Thread(() -> { try { Thread.sleep(transitionTime * 1000L); // 模拟加热过程 System.out.println("已达到目标温度: " + targetTemp + "°C"); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } }).start(); } } package demo1; import javax.swing.; import java.awt.; import java.awt.event.ActionEvent; import java.util.HashMap; import java.util.Map; public class TemperatureMonitorGUI extends JFrame { private JLabel temperatureLabel; private JLabel statusLabel; private JButton connectButton; private JButton readButton; private JComboBox<String> portComboBox; private JComboBox<String> baudRateComboBox; private JComboBox<String> stopBitsComboBox; private JComboBox<String> parityComboBox; private JComboBox<String> modeComboBox; private TemperatureController controller; // 输入组件 private JTextField targetTempField; private JTextField transitionTimeField; private JTextField startTempField; private Map<String, Component> modeComponents = new HashMap<>(); public TemperatureMonitorGUI() { setTitle("MODBUS RTU 温控系统"); setSize(900, 600); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(new BorderLayout(10, 10)); // 左侧输入配置面板 JPanel inputPanel = new JPanel(new GridLayout(7, 2, 5, 5)); inputPanel.setBorder(BorderFactory.createTitledBorder("输入配置")); inputPanel.add(new JLabel("串口:")); portComboBox = new JComboBox<>(); refreshPortList(); inputPanel.add(portComboBox); inputPanel.add(new JLabel("波特率:")); baudRateComboBox = new JComboBox<>(new String[]{"9600", "19200", "38400", "115200"}); inputPanel.add(baudRateComboBox); inputPanel.add(new JLabel("停止位:")); stopBitsComboBox = new JComboBox<>(new String[]{"1", "1.5", "2"}); inputPanel.add(stopBitsComboBox); inputPanel.add(new JLabel("校验方式:")); parityComboBox = new JComboBox<>(new String[]{"None", "Even", "Odd"}); inputPanel.add(parityComboBox); inputPanel.add(new JLabel("查询当前温度:")); JButton queryCurrentTempButton = new JButton("查询"); inputPanel.add(queryCurrentTempButton); inputPanel.add(new JLabel("模式选择:")); modeComboBox = new JComboBox<>(new String[]{"定值模式", "曲线模式"}); inputPanel.add(modeComboBox); add(inputPanel, BorderLayout.WEST); // 中间按钮面板 JPanel buttonPanel = new JPanel(new GridLayout(3, 1, 5, 5)); buttonPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); connectButton = new JButton("连接串口"); readButton = new JButton("读取温度"); buttonPanel.add(connectButton); buttonPanel.add(readButton); // 状态标签放底部 statusLabel = new JLabel("状态: 未连接"); buttonPanel.add(statusLabel); add(buttonPanel, BorderLayout.CENTER); // 右侧动态面板 JPanel rightPanel = new JPanel(new GridLayout(3, 1, 5, 5)); rightPanel.setBorder(BorderFactory.createTitledBorder("模式配置")); // 定值模式面板 JPanel constantModePanel = new JPanel(new GridLayout(2, 2, 5, 5)); constantModePanel.add(new JLabel("目标温度 (°C):")); targetTempField = new JTextField("25.5"); constantModePanel.add(targetTempField); constantModePanel.add(new JLabel("过渡时间 (秒):")); transitionTimeField = new JTextField("30"); constantModePanel.add(transitionTimeField); modeComponents.put("定值模式", constantModePanel); // 曲线模式面板 JPanel curveModePanel = new JPanel(); curveModePanel.setLayout(new BoxLayout(curveModePanel, BoxLayout.Y_AXIS)); curveModePanel.add(new JLabel("起始温度 (°C):")); startTempField = new JTextField("20.0"); curveModePanel.add(startTempField); for (int i = 1; i <= 3; i++) { curveModePanel.add(new JLabel("温度" + i + " (°C):")); curveModePanel.add(new JTextField("0.0")); curveModePanel.add(new JLabel("过渡时间" + i + " (秒):")); curveModePanel.add(new JTextField("30")); curveModePanel.add(new JLabel("保持时间" + i + " (秒):")); curveModePanel.add(new JTextField("60")); } curveModePanel.add(new JLabel("目标温度 (°C):")); JTextField finalTempField = new JTextField("30.0"); curveModePanel.add(finalTempField); curveModePanel.add(new JLabel("最终过渡时间 (秒):")); JTextField finalTransitionField = new JTextField("30"); curveModePanel.add(finalTransitionField); modeComponents.put("曲线模式", curveModePanel); // 默认加载定值模式 rightPanel.add(modeComponents.get("定值模式")); add(rightPanel, BorderLayout.EAST); // 初始化控制器 controller = null; // 模式切换监听器 modeComboBox.addActionListener(e -> { String selectedMode = (String) modeComboBox.getSelectedItem(); rightPanel.removeAll(); rightPanel.add(modeComponents.get(selectedMode)); rightPanel.revalidate(); rightPanel.repaint(); }); // 事件绑定 connectButton.addActionListener(this::connectSerialPort); readButton.addActionListener(this::readTemperature); queryCurrentTempButton.addActionListener(this::querySetTemperature); } private void connectSerialPort(ActionEvent e) { String selectedPort = (String) portComboBox.getSelectedItem(); if (selectedPort != null && controller == null) { int baudRate = Integer.parseInt((String) baudRateComboBox.getSelectedItem()); int stopBits = getStopBitsValue(); int parity = getParityValue(); controller = new TemperatureController(this, selectedPort, baudRate, stopBits, parity); controller.start(); } } private int getStopBitsValue() { String stopBits = (String) stopBitsComboBox.getSelectedItem(); switch (stopBits) { case "1": return SerialPort.ONE_STOP_BIT; case "1.5": return SerialPort.ONE_POINT_FIVE_STOP_BITS; case "2": return SerialPort.TWO_STOP_BITS; default: return SerialPort.ONE_STOP_BIT; } } private int getParityValue() { String parity = (String) parityComboBox.getSelectedItem(); switch (parity) { case "None": return SerialPort.NO_PARITY; case "Even": return SerialPort.EVEN_PARITY; case "Odd": return SerialPort.ODD_PARITY; default: return SerialPort.NO_PARITY; } } private void readTemperature(ActionEvent e) { if (controller != null) { try { byte slaveId = 0x01; controller.readActualTemperature(slaveId); } catch (Exception ex) { JOptionPane.showMessageDialog(this, "发生错误！"); } } } private void querySetTemperature(ActionEvent e) { if (controller != null) { try { byte slaveId = 0x01; controller.readSetTemperature(slaveId); } catch (Exception ex) { JOptionPane.showMessageDialog(this, "发生错误！"); } } } public void refreshPortList() { portComboBox.removeAllItems(); for (com.fazecast.jSerialComm.SerialPort port : com.fazecast.jSerialComm.SerialPort.getCommPorts()) { portComboBox.addItem(port.getSystemPortName()); } } public void updateTemperature(double temperature) { temperatureLabel.setText(String.format("当前温度: %.1f°C", temperature)); } public void setStatus(String status) { statusLabel.setText("状态: " + status); } } package demo1; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.atomic.AtomicBoolean; public class TemperatureProfileManager { private final TemperatureController controller; private final AtomicBoolean running = new AtomicBoolean(false); private ExecutorService executor = Executors.newSingleThreadExecutor(); public TemperatureProfileManager(TemperatureController controller) { this.controller = controller; } /** * 启动多段温度曲线控制 * * @param temps 温度数组（单位：°C） * @param durations 每段升温时间（单位：秒） * @param holdTimes 每段保持时间（单位：秒） / public void startCurveControl(float[] temps, int[] durations, int[] holdTimes) { if (temps.length != durations.length || temps.length != holdTimes.length) { throw new IllegalArgumentException("温度、升温时间和保持时间数组长度必须一致"); } if (running.getAndSet(true)) { System.out.println("已有任务正在运行，无法重复启动"); return; } executor.submit(() -> { for (int i = 0; i < temps.length && running.get(); i++) { float targetTemp = temps[i]; int duration = durations[i]; int holdTime = holdTimes[i]; System.out.printf("阶段 %d: 设置温度 %.1f°C，升温时间 %d 秒%n", i + 1, targetTemp, duration); controller.startControl(targetTemp, duration); try { Thread.sleep(duration 1000L); System.out.printf("阶段 %d: 已达到目标温度 %.1f°C，保持 %d 秒%n", i + 1, targetTemp, holdTime); Thread.sleep(holdTime * 1000L); } catch (InterruptedException e) { Thread.currentThread().interrupt(); break; } } running.set(false); System.out.println("温度曲线控制已完成"); }); } /** * 停止当前正在进行的温度曲线控制 */ public void stop() { running.set(false); System.out.println("温度曲线控制已停止"); } } 基于刚刚的要求，我的代码应该怎样修改

import java.awt.event.ActionEvent; import java.util.HashMap; import java.util.Map; public class TemperatureMonitorGUI extends JFrame { private JLabel temperatureLabel; // ... 其他不变 public ...

MODBUS_RTU通讯协议（客户） 1.字元结构 1.1 10―bit字元框（FOR ASCII）资料格式 8. N .1 START BIT 0 1 2 3 4 5 6 7 STOP BIT 8-data bits 10-bits character fram 1.2 11―bit字元框（FOR RTU）资料格式 8. N .2 START BIT 0 1 2 3 4 5 6 7 STOP BIT STOP BIT 8-data bits 11-bits character fram 资料格式 8. E .1 START BIT 0 1 2 3 4 5 6 7 Even Parity STOP BIT 8-data bits 11-bits character fram 资料格式 8. O. 1 START BIT 0 1 2 3 4 5 6 7 Odd Parity STOP BIT 8-data bits 11-bits character fram 波特率：1200，2400，4800，9600，19200 2.通信资料格式 RTU模式 START 保持无输入讯号≧ 20ms Adress 通信位址:8-bit 二进制位址。00H为广播地址，使用广播地址时只能接一台控制器。 Function 功能码：8-bit 二进制位址 DATA(n-1) 资料内容: n8-bit 资料内容 …… DATA 0 CRC CHK Low CRC 检查码：由2个8-bit二进制码组成 CRC CHK High END Hi 保持无输入讯号≧20ms 2.3功能码： 03H：读出暂存器内容 06H：写入一个WORD至寄存器 08H：回路侦测 2.3.1功能码08H：回路侦测。 RTU 模式：询问格式：回应格式： Address 01H Address 01H Function 08H Function 08H Sub-Func-Hi 00H (任意) Sub-Func-Hi 00H Sub-Func-Lo 00H （任意） Sub-Func-Lo 00H Data Content 12H （任意） Data Content 12H 34H （任意） 34H CRC Lo EDH CRC Lo EDH CRC Hi 7CH CRC Hi 7CH 2.3.2功能码03H：读出暂存器内容。例如：从起始暂存器（位址0000）读出2个连续资料内容，假设寄存器（0000）=0100H，（0001）=00F0H。 RTU模式：询问格式：回应格式 Address 01H Address 01H Function 03H Function 03H Data Addr 00H Number of data (count by byte) 04H 00H Number of data (count by word) 00H Content of data （Address 0000） 01H 02H 00H CRC Low C4H Content of data （Address 0001） 00H CRC Hight 0BH F0H CRC CHK Low FBH CRC CHK Hight 8BH 2.3.3功能码06H：写入一个WORD至暂存器。例如：对驱动器位址01H，写入03E8H到参数0010H。询问格式：回应格式： Address 01H Address 01H Function 06H Function 06H Data Addr 00H Data Addr 00H 10H 10H Data Content 03H Data Content 03H E8H E8H CRC Low 88H CRC CHK Low 88H CRC Hight B1H CRC CHK Hight B1H 2.4.错误通讯时的额外回应：当控制器做通信连接时，如果产生错误，此时控制器会回应错误码且将Function code AND 80H回应给主控系统，让主控系统知道有错误产生。参考错误通信时错误码的意义 RTU模式： Address 01H Function 86H Except code 02H CRC CHR Low C3H CRC CHR Hight A1H 错误码的意义：错误码说明 01 功能码错误；控制器可以辨识的功能码为03H,06H,08H 02 寄存器地址错误；资料的位址控制器无法辨识 03 资料内容值错误资料内容值太大或者太小，不是控制器所能辨识的内容值 04 控制器无法处理；控制器对此命令，无法执行 09 CRC或者LRC校验错误 10 奇偶校验错误 12 接收数据低于规定长度 13 接收数据超过规定长度其中将原功能号AND 80H后返回。并在Except code中返回错误码（见右上表格） 2.5 RTU模式的检查码（CRC Check）检查码由Address到Data content结束。其运算规则如下：步骤1：令16-bit暂存器（CRC暂存器）=FFFFH。步骤2：Exclusive OR第一个8-bite byte的讯息指令与低位元16-bite CRC暂存器，做Exclusive OR，将结果存入CRC暂存器内。步骤3：右移位CRC暂存器，将0填入高位元处。步骤4：检查右移的值，如果是0，将步骤3的新值存入CRC暂存器内，否则Exclusive OR A001H与CRC暂存器，将结果存入CRC暂存器内。步骤5：重复步骤3~步骤4，将8-bit全部运算完成。步骤6：重复步骤2~步骤5，取下一个8-bit的讯息指令，直到所有讯息指令运算完成。最后，得到的CRC暂存器的值，即是CRC的检查码。值得注意的是CRC的检查码必须交换放置於讯息指令的检查码中。以下为用c语言所写的crc检查码运算范例： unsigned char data; unsigned char length; unsigned int crc_chk(unsigned char data,unsigned char length) { int j;unsigned int reg_crc=0xffff; while(length--){ reg_crc^=*data++; for(j=0;j<8;j++){ if(reg_crc&0x01){ reg_crc=(reg_crc>>1)^0xa001;} else{ reg_crc=reg_crc>>1; } } } return reg_crc; } 3：通讯参数修改：同时按住SET键加上移位键4秒以上，出现LK代码，按数字键使LK数值为118，再:按SET键进入通讯参数设置(SET键即功能键)。意义参数名说明通讯地址 Ad 0-32 0：广播地址通讯波特率 bA 2：4800 3:9600 4:19200 通讯格式 Fo 3：MODBUS-RTU（8，N，2） 4：MODBUS-RTU（8，E，1） 5：MODBUS-RTU（8，O，1）6： MODBUS-RTU（8，N，1） 4.参数位址定义： 0x0000: 温度测量值只能读 0x0001: 湿度测量值只能读 0x0002: 读：剩余运行时间。写：写入0，关闭手动输出；写入1，打开手动输出。比如照明，循环。 0x0003/0x0004:温度设定值可读可写。 0x0006: 定时设定值可读可写。 0x000a: 读：.0 超过允许最高温度报警 .1温度上偏差报警 .2温度传感器故障 .6 温度下偏差报警 .15 总报警写：写入1 在鸣叫和静音之间切换。 0x000b: 读：0x000b.11=1运行 =0停止写：写入1，启动或停止运行读：0x000b.8=1 手动输出打开 =0 手动输出关闭。 0x000d: 转速测量值只读 0x0012: CO2浓度测量值只读 0x0013: 压力测量值只读 0x0018: 转速设定值可读可写 0x0019: 湿度设定值可读可写 0x001a: 第一组光照设定值可读可写 0x001b: CO2设定值可读可写 0x001c: O2设定值可读可写 0x001d: 压力设定值可读可写 0x001e: 第二组光照设定值可读可写 0x001f: 第三组光照设定值可读可写 0x00e8 O2氧浓度测量值只读 0x00f8: 连读上位机发送：通讯地址+03H+00H+F8H+00H+14H+CRC(L)+CRC(H)。此处0x00F8必须优先。控制器返回：通讯地址+03H+28H+运行时间高位+运行时间低位+设定时间高位+设定时间低位+测量温度高位+测量温度低位+设定温度高位+设定温度低位+测量湿度高位+测量湿度低位+设定湿度高位+设定湿度低位+第二组光照级数+第一组光照级数+第三组光照级数+第一组光照级数+测量转速高位+测量转速低位+设定转速高位+设定转速低位+测量CO2浓度高位+测量CO2浓度低位+设定CO2浓度高位+设定CO2浓度低位+测量O2浓度高位+测量O2浓度低位+设定O2浓度高位+设定O2浓度低位+测量压力高位+测量压力低位+设定压力高位+设定压力低位+备份1高位+备份1低位+备份2高位+备份2低位+备份3高位+备份3低位+备份4高位+备份4低位+ CRC(L)+CRC(H). 按照这个修改代码，并完善功能

import java.awt.event.ActionEvent; public class TemperatureMonitorGUI extends JFrame { // ... 已有变量 ... private JComboBox<String> portComboBox; private JComboBox<String> baudRateComboBox; // ...

新能源车电机控制器：基于TI芯片的FOC算法源代码与实际应用

内容概要：本文详细介绍了基于TI芯片的FOC（场向量控制）算法在新能源车电机控制器中的应用。文章首先阐述了新能源车电机控制器的重要性及其对车辆性能的影响，接着深入探讨了FOC算法的工作原理，强调其在提高电机控制精度和能效方面的优势。随后，文章展示了完整的源代码资料，涵盖采样模块、CAN通信模块等多个关键部分，并指出这些代码不仅限于理论演示，而是来自实际量产的应用程序。此外，文中还特别提到代码遵循严格的规范，有助于读者理解和学习电机控制软件的最佳实践。适合人群：从事新能源车研发的技术人员、电机控制工程师、嵌入式系统开发者以及对电机控制感兴趣的电子工程学生。使用场景及目标：① 学习并掌握基于TI芯片的FOC算法的具体实现；② 理解电机控制器各模块的功能和交互方式；③ 提升实际项目开发能力，减少开发过程中遇到的问题。其他说明：本文提供的源代码资料来源于早期已量产的新能源车控制器，因此具有较高的实用价值和参考意义。

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