JFrame.setBackground设置无效

最新推荐文章于 2021-12-02 14:26:54 发布
原创 最新推荐文章于 2021-12-02 14:26:54 发布 · 3.9k 阅读 · 3 ·
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本文详细介绍了如何在Java Swing中正确地设置JFrame的背景颜色，并对比了JFrame与Frame在背景设置上的区别。此外，还提供了如何设置JFrame透明度的示例代码。 
JFrame这样的框架,一旦创建,在其中就已经包含一个内容面板,一般我们在往JFrame中添加组件时,都加在了内容面板中,这个面板可以通过JFrame的成员方法getContentPane()取出来,所以如果设置JFrame的背景颜色,仍然会被内容面板盖住,不如设置内容面板的背景颜色，如果框架中还加有其他面板,内容面板的颜色也会被其他面板盖住,要注意一下面板的布局情况。


在使用JFrame.setBackground(new Color);是发现这个方法调用后并没有改变JFrame窗口的背景颜色，这体现了点JFrame和Frame的区别：
JFrame要用：
JFrame.getContentPane().setBackground(new Color);
来改变JFrame的背景颜色；
Frame中则可以直接使用：
Frame.setBackground(new Color);
 
JFrame透明度设置
  java.awt.EventQueue.invokeLater(new Runnable() {
   public void run() {
    AAA a = new AAA();
    a.setVisible(true);
//    com.sun.awt.AWTUtilities.setWindowShape(a, new Ellipse2D.Double(0, 0, a.getWidth(), a.getHeight()));
    com.sun.awt.AWTUtilities.setWindowOpacity(a, 0.80f);
   }
  });
 
a为JFrame 0.80F为透明度系数
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一般我们在往JFrame中添加组件时,都加在了内容面板中,这个面板可以通过JFrame的成员方法getContentPane()取出来,所以如果设置JFrame的背景颜色,仍然会被内容面板盖住,不如设置内容面板的背景颜色，如果框架中还加有其他面板,内容面板的颜色也会被其他面板盖住,要注意一下面板的布局情况。JFrame框架，一旦创建,在其中就已经包含一个内容面板。
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原理： JFrame框架，一旦创建,在其中就已经包含一个内容面板。 一般我们在往JFrame中添加组件时,都加在了内容面板中,这个面板可以通过JFrame的成员方法getContentPane()取出来,所以如果设置JFrame的背景颜色,仍然会被内容面板盖住,不如设置内容面板的背景颜色，如果框架中还加有其他面板,内容面板的颜色也会被其他面板盖住,要注意一下面...
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JFrame这样的框架,一旦创建,在其中就已经包含一个内容面板,一般我们在往JFrame中添加组件时,都加在了内容面板中,这个面板可以通过JFrame的成员方法getContentPane()取出来,所以如果设置JFrame的背景颜色,仍然会被内容面板盖住,不如设置内容面板的背景颜色当时如果框架中还加有其他面板,内容面板的颜色也会被其他面板盖住,要注意一下面板的布局情况
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package zyx; /* * 创建一个程序，包含三个按钮："红色"、"绿色"、"蓝色"，点击相应按钮时，将窗口背景色改为对应颜色。 */ import javax.swing.*; import java.awt.*; public class Changecolor { public static void main(String[] args) { // TODO Auto-generated method stub JFrame frame=new JFrame("颜色选择器"); frame.setSize(400,300); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().setBackground(Color.PINK); Button b1=new Button("red"); Button b2=new Button("green"); Button b3=new Button("blue"); b1.addActionListener(new ActionListener() { public void actionListener(ActionEvent e) { frame.getContentPane().setBackground(Color.RED); } }); b2.addActionListener(new ActionListener() { public void actionListener(ActionEvent e) { frame.getContentPane().setBackground(Color.green); } }); b3.addActionListener(new ActionListener() { public void actionListener(ActionEvent e) { frame.getContentPane().setBackground(Color.BLUE); } }); frame.add(b1); frame.add(b2); frame.add(b3); frame.setVisible(true); } }哪里错了，主要帮我纠错
06-11
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label..setBackground(Color.GREEN);为什么设置不了颜色
06-08
您在Java Swing中尝试使用`label.setBackground(Color.GREEN)`来设置JLabel的背景颜色时无效，这通常是由于JLabel的默认渲染机制导致的。下面我将一步步解释原因并提供解决方案。Java Swing中的JLabel类默认是**...
package com.student.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import com.student.entity.Student; import com.student.util.DBUtil; public class StudentDAO { // 插入学生 public void insertStudent(Student student) { String sql = "INSERT INTO students (sid, name, age, score) VALUES (?, ?, ?, ?)"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql)) { pstmt.setString(1, student.getSid()); pstmt.setString(2, student.getName()); pstmt.setInt(3, student.getAge()); pstmt.setDouble(4, student.getScore()); pstmt.executeUpdate(); } catch (SQLException e) { System.err.println("插入学生信息时出现错误: " + e.getMessage()); } } // 获取所有学生 public List<Student> getAllStudents() { List<Student> students = new ArrayList<>(); String sql = "SELECT * FROM students"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql); ResultSet rs = pstmt.executeQuery()) { while (rs.next()) { students.add(extractStudentFromResultSet(rs)); } } catch (SQLException e) { e.printStackTrace(); } return students; } // 删除学生（修改方法名） public void deleteStudent(String sid) { // 这里修改了方法名 String sql = "DELETE FROM students WHERE sid = ?"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql)) { pstmt.setString(1, sid); int rowsAffected = pstmt.executeUpdate(); if (rowsAffected == 0) { System.err.println("未找到学号为 " + sid + " 的学生"); } } catch (SQLException e) { e.printStackTrace(); } } // 更新学生信息 public void updateStudent(Student student) { String sql = "UPDATE students SET name = ?, age = ?, score = ? WHERE sid = ?"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql)) { pstmt.setString(1, student.getName()); pstmt.setInt(2, student.getAge()); pstmt.setDouble(3, student.getScore()); pstmt.setString(4, student.getSid()); int rowsAffected = pstmt.executeUpdate(); if (rowsAffected == 0) { System.err.println("未找到学号为 " + student.getSid() + " 的学生"); } } catch (SQLException e) { e.printStackTrace(); } } // 搜索学生 public List<Student> searchStudents(String keyword) { List<Student> students = new ArrayList<>(); String sql = "SELECT * FROM students WHERE sid LIKE ? OR name LIKE ?"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql)) { String searchPattern = "%" + keyword + "%"; pstmt.setString(1, searchPattern); pstmt.setString(2, searchPattern); try (ResultSet rs = pstmt.executeQuery()) { while (rs.next()) { students.add(extractStudentFromResultSet(rs)); } } } catch (SQLException e) { e.printStackTrace(); } return students; } // 排序学生 public List<Student> getStudentsOrderBy(String field) { List<Student> students = new ArrayList<>(); String validField = validateSortField(field); String sql = "SELECT * FROM students ORDER BY " + validField; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql); ResultSet rs = pstmt.executeQuery()) { while (rs.next()) { students.add(extractStudentFromResultSet(rs)); } } catch (SQLException e) { e.printStackTrace(); } return students; } // 根据ID获取学生 public Student getStudentById(String sid) { String sql = "SELECT * FROM students WHERE sid = ?"; try (Connection conn = DBUtil.getConnection(); PreparedStatement pstmt = conn.prepareStatement(sql)) { pstmt.setString(1, sid); try (ResultSet rs = pstmt.executeQuery()) { if (rs.next()) { return extractStudentFromResultSet(rs); } } } catch (SQLException e) { e.printStackTrace(); } return null; } // 验证排序字段（防止SQL注入） private String validateSortField(String field) { String[] validFields = {"sid", "name", "age", "score"}; for (String valid : validFields) { if (valid.equalsIgnoreCase(field)) { return valid; } } return "sid"; // 默认值 } // 从ResultSet提取学生对象（复用代码） private Student extractStudentFromResultSet(ResultSet rs) throws SQLException { String sid = rs.getString("sid"); String name = rs.getString("name"); int age = rs.getInt("age"); double score = rs.getDouble("score"); return new Student(sid, name, age, score); } } package com.student.ui; import com.student.dao.StudentDAO; import com.student.entity.Student; import javax.swing.*; import javax.swing.table.DefaultTableModel; import java.awt.*; import java.util.List; public class StudentGUI extends JFrame { private JTable studentTable; private DefaultTableModel tableModel; private StudentDAO studentDAO = new StudentDAO(); private JTextField searchField; private JComboBox<String> sortComboBox; public StudentGUI() { setTitle("学生信息管理系统"); setSize(900, 600); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设置淡蓝色背景 getContentPane().setBackground(new Color(230, 240, 255)); // 创建表格 String[] columns = {"学号", "姓名", "年龄", "成绩"}; tableModel = new DefaultTableModel(columns, 0) { @Override public boolean isCellEditable(int row, int column) { return false; // 禁止表格直接编辑 } }; studentTable = new JTable(tableModel); studentTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); // 创建功能面板 JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.LEFT)); controlPanel.setBackground(new Color(230, 240, 255)); // 搜索组件 searchField = new JTextField(15); JButton searchBtn = new JButton("查找"); searchBtn.addActionListener(e -> searchStudents()); controlPanel.add(new JLabel("搜索:")); controlPanel.add(searchField); controlPanel.add(searchBtn); // 排序组件 sortComboBox = new JComboBox<>(new String[]{"学号", "姓名", "年龄", "成绩"}); JButton sortBtn = new JButton("排序"); sortBtn.addActionListener(e -> sortStudents()); controlPanel.add(new JLabel("排序:")); controlPanel.add(sortComboBox); controlPanel.add(sortBtn); // 操作按钮 JButton addBtn = new JButton("添加学生"); addBtn.addActionListener(e -> showAddDialog()); JButton editBtn = new JButton("修改"); editBtn.addActionListener(e -> showEditDialog()); JButton deleteBtn = new JButton("删除"); deleteBtn.addActionListener(e -> deleteStudent()); // 添加按钮到面板 JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT)); buttonPanel.setBackground(new Color(230, 240, 255)); buttonPanel.add(addBtn); buttonPanel.add(editBtn); buttonPanel.add(deleteBtn); // 主布局 JPanel mainPanel = new JPanel(new BorderLayout(10, 10)); mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); mainPanel.setBackground(new Color(230, 240, 255)); mainPanel.add(controlPanel, BorderLayout.NORTH); mainPanel.add(new JScrollPane(studentTable), BorderLayout.CENTER); mainPanel.add(buttonPanel, BorderLayout.SOUTH); setContentPane(mainPanel); refreshTable(); } // 添加学生对话框 private void showAddDialog() { JDialog dialog = new JDialog(this, "添加学生", true); dialog.setSize(300, 250); dialog.setLayout(new BorderLayout()); dialog.getContentPane().setBackground(new Color(230, 240, 255)); JPanel formPanel = createFormPanel(); JButton saveBtn = new JButton("保存"); // 获取表单字段 JTextField sidField = (JTextField) formPanel.getComponent(1); JTextField nameField = (JTextField) formPanel.getComponent(3); JTextField ageField = (JTextField) formPanel.getComponent(5); JTextField scoreField = (JTextField) formPanel.getComponent(7); saveBtn.addActionListener(e -> { try { Student student = new Student( sidField.getText(), nameField.getText(), Integer.parseInt(ageField.getText()), Double.parseDouble(scoreField.getText()) ); studentDAO.insertStudent(student); refreshTable(); dialog.dispose(); } catch (NumberFormatException ex) { JOptionPane.showMessageDialog(this, "请输入有效的数字", "错误", JOptionPane.ERROR_MESSAGE); } }); dialog.add(formPanel, BorderLayout.CENTER); dialog.add(saveBtn, BorderLayout.SOUTH); dialog.setVisible(true); } // 修改学生对话框 private void showEditDialog() { int selectedRow = studentTable.getSelectedRow(); if (selectedRow == -1) { JOptionPane.showMessageDialog(this, "请先选择要修改的学生", "提示", JOptionPane.WARNING_MESSAGE); return; } String sid = (String) tableModel.getValueAt(selectedRow, 0); Student student = studentDAO.getStudentById(sid); JDialog dialog = new JDialog(this, "修改学生信息", true); dialog.setSize(300, 250); dialog.setLayout(new BorderLayout()); dialog.getContentPane().setBackground(new Color(230, 240, 255)); JPanel formPanel = createFormPanel(); // 填充当前数据 ((JTextField) formPanel.getComponent(1)).setText(student.getSid()); ((JTextField) formPanel.getComponent(3)).setText(student.getName()); ((JTextField) formPanel.getComponent(5)).setText(String.valueOf(student.getAge())); ((JTextField) formPanel.getComponent(7)).setText(String.valueOf(student.getScore())); // 学号不可编辑 ((JTextField) formPanel.getComponent(1)).setEditable(false); JButton saveBtn = new JButton("保存"); saveBtn.addActionListener(e -> { try { student.setName(((JTextField) formPanel.getComponent(3)).getText()); student.setAge(Integer.parseInt(((JTextField) formPanel.getComponent(5)).getText())); student.setScore(Double.parseDouble(((JTextField) formPanel.getComponent(7)).getText())); studentDAO.updateStudent(student); refreshTable(); dialog.dispose(); } catch (NumberFormatException ex) { JOptionPane.showMessageDialog(this, "请输入有效的数字", "错误", JOptionPane.ERROR_MESSAGE); } }); dialog.add(formPanel, BorderLayout.CENTER); dialog.add(saveBtn, BorderLayout.SOUTH); dialog.setVisible(true); } // 创建表单面板（复用） private JPanel createFormPanel() { JPanel formPanel = new JPanel(new GridLayout(4, 2, 5, 10)); formPanel.setBackground(new Color(230, 240, 255)); formPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); formPanel.add(new JLabel("学号：")); formPanel.add(new JTextField()); formPanel.add(new JLabel("姓名：")); formPanel.add(new JTextField()); formPanel.add(new JLabel("年龄：")); formPanel.add(new JTextField()); formPanel.add(new JLabel("成绩：")); formPanel.add(new JTextField()); return formPanel; } // 删除学生 private void deleteStudent() { int selectedRow = studentTable.getSelectedRow(); if (selectedRow == -1) { JOptionPane.showMessageDialog(this, "请先选择要删除的学生", "提示", JOptionPane.WARNING_MESSAGE); return; } int confirm = JOptionPane.showConfirmDialog( this, "确定要删除该学生吗？", "确认删除", JOptionPane.YES_NO_OPTION ); if (confirm == JOptionPane.YES_OPTION) { String sid = (String) tableModel.getValueAt(selectedRow, 0); studentDAO.deleteStudent(sid); refreshTable(); } } // 搜索学生 private void searchStudents() { String keyword = searchField.getText().trim(); if (keyword.isEmpty()) { refreshTable(); return; } List<Student> students = studentDAO.searchStudents(keyword); updateTable(students); } // 排序学生 private void sortStudents() { String sortBy = (String) sortComboBox.getSelectedItem(); String sortField = ""; switch (sortBy) { case "学号": sortField = "sid"; break; case "姓名": sortField = "name"; break; case "年龄": sortField = "age"; break; case "成绩": sortField = "score"; break; } List<Student> students = studentDAO.getStudentsOrderBy(sortField); updateTable(students); } // 刷新表格 private void refreshTable() { List<Student> students = studentDAO.getAllStudents(); updateTable(students); } // 更新表格数据 private void updateTable(List<Student> students) { tableModel.setRowCount(0); for (Student s : students) { tableModel.addRow(new Object[]{s.getSid(), s.getName(), s.getAge(), s.getScore()}); } } public static void main(String[] args) { SwingUtilities.invokeLater(() -> { StudentGUI gui = new StudentGUI(); gui.setVisible(true); }); } } 请根据这两个代码修改
06-25
}elseif(paraminstanceofInteger){pstmt.setInt(i+1,(Integer)param);}elseif(paraminstanceofDouble){pstmt.setDouble(i+1,(Double)param);}}ResultSetrs=pstmt.executeQuery();List<Student>students=newArrayList...
package demo1; import com.fazecast.jSerialComm.SerialPort; 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 JButton startControlButton; private JButton refreshPortButton; private JComboBox<String> portComboBox; private JComboBox<String> baudRateComboBox; private JComboBox<String> dateBiteComboBox; 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 Map<String, Component> modeComponents = new HashMap<>(); // 曲线模式字段 private JTextField[] curveTempFields = new JTextField[3]; private JTextField[] curveDurationFields = new JTextField[3]; private JTextField[] curveHoldFields = new JTextField[3]; private JTextField finalTempField; private JTextField finalTransitionField; public TemperatureMonitorGUI() { setTitle("MODBUS RTU 温控系统"); setSize(1100, 700); // 增加整体尺寸 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); getContentPane().setBackground(new Color(240, 245, 250)); // 设置背景色 // 使用主面板管理布局 JPanel mainPanel = new JPanel(new BorderLayout(15, 15)); mainPanel.setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15)); add(mainPanel); // 顶部温度显示面板 - 更醒目的设计 JPanel topPanel = createTopPanel(); mainPanel.add(topPanel, BorderLayout.NORTH); // 中央区域使用网格袋布局 JPanel centerPanel = new JPanel(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.insets = new Insets(8, 8, 8, 8); // 组件间距 gbc.fill = GridBagConstraints.BOTH; // 左侧输入配置面板 - 宽度调整 JPanel inputPanel = createInputPanel(); gbc.gridx = 0; gbc.gridy = 0; gbc.weightx = 0.3; // 比例调整 gbc.weighty = 1.0; centerPanel.add(inputPanel, gbc); // 中间按钮面板 - 更紧凑 JPanel buttonPanel = createButtonPanel(); gbc.gridx = 1; gbc.weightx = 0.2; // 比例调整 centerPanel.add(buttonPanel, gbc); // 右侧动态面板 - 宽度增加 JPanel rightPanel = createRightPanel(); gbc.gridx = 2; gbc.weightx = 0.4; // 比例调整 centerPanel.add(rightPanel, gbc); mainPanel.add(centerPanel, BorderLayout.CENTER); // 底部状态栏 JPanel bottomPanel = new JPanel(new FlowLayout(FlowLayout.LEFT)); bottomPanel.setBorder(BorderFactory.createEtchedBorder()); bottomPanel.setBackground(new Color(230, 240, 255)); statusLabel = new JLabel("状态: 未连接"); bottomPanel.add(statusLabel); mainPanel.add(bottomPanel, BorderLayout.SOUTH); // 初始化控制器 controller = null; } private JPanel createTopPanel() { JPanel topPanel = new JPanel(new FlowLayout(FlowLayout.CENTER)); topPanel.setBorder(BorderFactory.createEmptyBorder(10, 0, 15, 0)); topPanel.setBackground(new Color(70, 130, 180)); temperatureLabel = new JLabel("当前温度: -- °C"); temperatureLabel.setFont(new Font("微软雅黑", Font.BOLD, 28)); temperatureLabel.setForeground(Color.WHITE); topPanel.add(temperatureLabel); return topPanel; } private JPanel createInputPanel() { JPanel inputPanel = new JPanel(new GridBagLayout()); inputPanel.setBorder(BorderFactory.createTitledBorder("通信配置")); inputPanel.setBackground(Color.WHITE); GridBagConstraints gbc = new GridBagConstraints(); gbc.insets = new Insets(5, 5, 5, 5); gbc.anchor = GridBagConstraints.WEST; gbc.fill = GridBagConstraints.HORIZONTAL; int row = 0; // 串口选择 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("串口:"), gbc); gbc.gridx = 1; JPanel portPanel = new JPanel(new BorderLayout(5, 0)); portComboBox = new JComboBox<>(); portComboBox.setPreferredSize(new Dimension(180, 25)); refreshPortList(); portPanel.add(portComboBox, BorderLayout.CENTER); refreshPortButton = new JButton("刷新"); refreshPortButton.addActionListener(e -> refreshPortList()); portPanel.add(refreshPortButton, BorderLayout.EAST); inputPanel.add(portPanel, gbc); // 波特率 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("波特率:"), gbc); gbc.gridx = 1; baudRateComboBox = new JComboBox<>(new String[]{"1200", "2400", "4800", "9600","19200"}); baudRateComboBox.setSelectedIndex(0); inputPanel.add(baudRateComboBox, gbc); // 数据位 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("数据位"), gbc); gbc.gridx = 1; dateBiteComboBox = new JComboBox<>(new String[]{"6", "7", "8"}); dateBiteComboBox.setSelectedIndex(0); inputPanel.add(dateBiteComboBox, gbc); // 停止位 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("停止位:"), gbc); gbc.gridx = 1; stopBitsComboBox = new JComboBox<>(new String[]{"1", "1.5", "2"}); stopBitsComboBox.setSelectedIndex(0); inputPanel.add(stopBitsComboBox, gbc); // 校验方式 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("校验方式:"), gbc); gbc.gridx = 1; parityComboBox = new JComboBox<>(new String[]{"None", "Even", "Odd"}); parityComboBox.setSelectedIndex(0); inputPanel.add(parityComboBox, gbc); // 分隔线 gbc.gridx = 0; gbc.gridy = row++; gbc.gridwidth = 2; inputPanel.add(new JSeparator(), gbc); // 查询当前温度 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("初始温度:"), gbc); gbc.gridx = 1; JButton queryCurrentTempButton = new JButton("查询"); queryCurrentTempButton.setPreferredSize(new Dimension(80, 25)); queryCurrentTempButton.addActionListener(this::queryCurrentTemperature); inputPanel.add(queryCurrentTempButton, gbc); // 查询设定温度 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("设定温度:"), gbc); gbc.gridx = 1; JButton querySetTempButton = new JButton("查询"); querySetTempButton.setPreferredSize(new Dimension(80, 25)); querySetTempButton.addActionListener(this::querySetTemperature); inputPanel.add(querySetTempButton, gbc); // 分隔线 gbc.gridx = 0; gbc.gridy = row++; gbc.gridwidth = 2; inputPanel.add(new JSeparator(), gbc); // 模式选择 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("模式选择:"), gbc); gbc.gridx = 1; modeComboBox = new JComboBox<>(new String[]{"定值模式", "曲线模式"}); modeComboBox.setSelectedIndex(0); inputPanel.add(modeComboBox, gbc); // 启动控制 gbc.gridx = 0; gbc.gridy = row++; inputPanel.add(new JLabel("启动控制:"), gbc); gbc.gridx = 1; startControlButton = new JButton("启动"); startControlButton.setPreferredSize(new Dimension(100, 30)); startControlButton.setBackground(new Color(50, 150, 50)); startControlButton.setForeground(Color.WHITE); startControlButton.addActionListener(this::startControl); inputPanel.add(startControlButton, gbc); return inputPanel; } private JPanel createButtonPanel() { JPanel buttonPanel = new JPanel(new GridBagLayout()); buttonPanel.setBorder(BorderFactory.createTitledBorder("操作")); buttonPanel.setBackground(Color.WHITE); GridBagConstraints gbc = new GridBagConstraints(); gbc.insets = new Insets(15, 10, 15, 10); gbc.fill = GridBagConstraints.HORIZONTAL; // 连接按钮 connectButton = new JButton("连接串口"); connectButton.setPreferredSize(new Dimension(150, 40)); connectButton.setFont(new Font("微软雅黑", Font.BOLD, 14)); connectButton.setBackground(new Color(70, 130, 180)); connectButton.setForeground(Color.WHITE); connectButton.addActionListener(this::connectSerialPort); gbc.gridy = 0; buttonPanel.add(connectButton, gbc); // 读取温度按钮 readButton = new JButton("读取温度"); readButton.setPreferredSize(new Dimension(150, 40)); readButton.setFont(new Font("微软雅黑", Font.BOLD, 14)); readButton.setBackground(new Color(60, 179, 113)); readButton.setForeground(Color.WHITE); readButton.addActionListener(this::readTemperature); gbc.gridy = 1; buttonPanel.add(readButton, gbc); return buttonPanel; } private JPanel createRightPanel() { JPanel rightPanel = new JPanel(new BorderLayout()); rightPanel.setBorder(BorderFactory.createTitledBorder("模式配置")); rightPanel.setBackground(Color.WHITE); // 定值模式面板 JPanel constantModePanel = createConstantModePanel(); modeComponents.put("定值模式", constantModePanel); // 曲线模式面板 JPanel curveModePanel = createCurveModePanel(); modeComponents.put("曲线模式", curveModePanel); // 默认加载定值模式 rightPanel.add(modeComponents.get("定值模式"), BorderLayout.CENTER); // 模式切换监听器 modeComboBox.addActionListener(e -> { String selectedMode = (String) modeComboBox.getSelectedItem(); rightPanel.removeAll(); rightPanel.add(modeComponents.get(selectedMode), BorderLayout.CENTER); rightPanel.revalidate(); rightPanel.repaint(); }); return rightPanel; } private JPanel createConstantModePanel() { JPanel panel = new JPanel(new GridBagLayout()); panel.setBackground(Color.WHITE); panel.setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15)); GridBagConstraints gbc = new GridBagConstraints(); gbc.insets = new Insets(10, 10, 10, 10); gbc.anchor = GridBagConstraints.WEST; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.gridx = 0; gbc.gridy = 0; panel.add(new JLabel("目标温度 (°C):"), gbc); gbc.gridx = 1; targetTempField = new JTextField(10); targetTempField.setText("25.5"); panel.add(targetTempField, gbc); gbc.gridx = 0; gbc.gridy = 1; panel.add(new JLabel("过渡时间 (秒):"), gbc); gbc.gridx = 1; transitionTimeField = new JTextField(10); transitionTimeField.setText("30"); panel.add(transitionTimeField, gbc); // 添加说明标签 gbc.gridx = 0; gbc.gridy = 2; gbc.gridwidth = 2; JLabel infoLabel = new JLabel("<html><div style='width:250px;'>定值模式将温度稳定在设定值，过渡时间表示达到目标温度所需时间</div></html>"); infoLabel.setForeground(new Color(100, 100, 100)); panel.add(infoLabel, gbc); return panel; } private JPanel createCurveModePanel() { JPanel panel = new JPanel(new GridBagLayout()); panel.setBackground(Color.WHITE); panel.setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15)); GridBagConstraints gbc = new GridBagConstraints(); gbc.insets = new Insets(8, 5, 8, 5); gbc.fill = GridBagConstraints.HORIZONTAL; // 表头 gbc.gridx = 0; gbc.gridy = 0; gbc.anchor = GridBagConstraints.CENTER; panel.add(new JLabel("阶段"), gbc); gbc.gridx = 1; panel.add(new JLabel("目标温度 (°C)"), gbc); gbc.gridx = 2; panel.add(new JLabel("过渡时间 (秒)"), gbc); gbc.gridx = 3; panel.add(new JLabel("保持时间 (秒)"), gbc); gbc.anchor = GridBagConstraints.WEST; // 三阶段输入 for (int i = 0; i < 3; i++) { gbc.gridy = i + 1; gbc.gridx = 0; panel.add(new JLabel("阶段 " + (i+1) + ":"), gbc); gbc.gridx = 1; curveTempFields[i] = new JTextField(6); curveTempFields[i].setText("0.0"); panel.add(curveTempFields[i], gbc); gbc.gridx = 2; curveDurationFields[i] = new JTextField(6); curveDurationFields[i].setText("30"); panel.add(curveDurationFields[i], gbc); gbc.gridx = 3; curveHoldFields[i] = new JTextField(6); curveHoldFields[i].setText("60"); panel.add(curveHoldFields[i], gbc); } // 最终阶段 gbc.gridy = 4; gbc.gridx = 0; panel.add(new JLabel("最终目标:"), gbc); gbc.gridx = 1; finalTempField = new JTextField(6); finalTempField.setText("30.0"); panel.add(finalTempField, gbc); gbc.gridx = 2; finalTransitionField = new JTextField(6); finalTransitionField.setText("30"); panel.add(finalTransitionField, gbc); // 添加说明标签 gbc.gridx = 0; gbc.gridy = 5; gbc.gridwidth = 4; JLabel infoLabel = new JLabel("<html><div style='width:300px;'>曲线模式按顺序执行三个阶段，每个阶段包含升温、保持过程，最后达到最终目标温度</div></html>"); infoLabel.setForeground(new Color(100, 100, 100)); panel.add(infoLabel, gbc); return panel; } // =========== 以下为功能方法 =========== private void connectSerialPort(ActionEvent e) { String selectedPort = (String) portComboBox.getSelectedItem(); if (selectedPort != null && controller == null) { int baudRate = Integer.parseInt((String) baudRateComboBox.getSelectedItem()); int dateBite = Integer.parseInt((String) dateBiteComboBox.getSelectedItem()); int stopBits = getStopBitsValue(); int parity = getParityValue(); controller = new TemperatureController(this, selectedPort, baudRate, dateBite,stopBits, parity); controller.start(); connectButton.setText("断开连接"); connectButton.setBackground(new Color(246, 115, 115)); // 红色表示断开状态 } else if (controller != null) { // 断开连接逻辑 controller.stop(); controller = null; setStatus("已断开连接"); connectButton.setText("连接串口"); connectButton.setBackground(new Color(70, 130, 180)); // 蓝色表示连接状态 } } 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) { showError("读取温度时发生错误: " + ex.getMessage()); } } else { showError("请先连接串口"); } } private void queryCurrentTemperature(ActionEvent e) { if (controller != null) { try { byte slaveId = 0x01; controller.readActualTemperature(slaveId); } catch (Exception ex) { showError("查询当前温度时发生错误: " + ex.getMessage()); } } else { showError("请先连接串口"); } } private void querySetTemperature(ActionEvent e) { if (controller != null) { try { byte slaveId = 0x01; controller.readSetTemperature(slaveId); } catch (Exception ex) { showError("查询设定温度时发生错误: " + ex.getMessage()); } } else { showError("请先连接串口"); } } private void startControl(ActionEvent e) { if (controller == null) { showError("请先连接串口"); return; } String selectedMode = (String) modeComboBox.getSelectedItem(); try { if ("定值模式".equals(selectedMode)) { float targetTemp = Float.parseFloat(targetTempField.getText()); int transitionTime = Integer.parseInt(transitionTimeField.getText()); controller.startControl(targetTemp, transitionTime); showInfo("定值模式启动: 目标温度 " + targetTemp + "°C"); } else if ("曲线模式".equals(selectedMode)) { float[] temps = new float[4]; int[] durations = new int[4]; int[] holdTimes = new int[3]; // 获取三个阶段参数 for (int i = 0; i < 3; i++) { temps[i] = Float.parseFloat(curveTempFields[i].getText()); durations[i] = Integer.parseInt(curveDurationFields[i].getText()); holdTimes[i] = Integer.parseInt(curveHoldFields[i].getText()); } // 添加最终阶段参数 temps[3] = Float.parseFloat(finalTempField.getText()); durations[3] = Integer.parseInt(finalTransitionField.getText()); controller.profileManager.startCurveControl(temps, durations, holdTimes); showInfo("曲线模式启动: 三阶段温度控制"); } } catch (NumberFormatException ex) { showError("请输入有效的数值: " + ex.getMessage()); } catch (IllegalArgumentException ex) { showError("参数错误: " + ex.getMessage()); } catch (Exception ex) { showError("启动控制时发生错误: " + ex.getMessage()); } } public void refreshPortList() { portComboBox.removeAllItems(); for (SerialPort port : SerialPort.getCommPorts()) { portComboBox.addItem(port.getSystemPortName()); } } public void updateTemperature(double temperature) { SwingUtilities.invokeLater(() -> { temperatureLabel.setText(String.format("当前温度: %.1f°C", temperature)); // 根据温度变化改变颜色 if (temperature > 35) { temperatureLabel.setForeground(new Color(220, 20, 60)); // 高温红色 } else if (temperature < 10) { temperatureLabel.setForeground(new Color(30, 144, 255)); // 低温蓝色 } else { temperatureLabel.setForeground(Color.WHITE); // 正常温度白色 } }); } public void setStatus(String status) { SwingUtilities.invokeLater(() -> statusLabel.setText("状态: " + status) ); } private void showError(String message) { SwingUtilities.invokeLater(() -> JOptionPane.showMessageDialog(this, message, "错误", JOptionPane.ERROR_MESSAGE) ); } private void showInfo(String message) { SwingUtilities.invokeLater(() -> JOptionPane.showMessageDialog(this, message, "信息", JOptionPane.INFORMATION_MESSAGE) ); } public static void main(String[] args) { SwingUtilities.invokeLater(() -> { TemperatureMonitorGUI gui = new TemperatureMonitorGUI(); gui.setLocationRelativeTo(null); // 居中显示 gui.setVisible(true); }); } } 在我这个上面修改
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