基于java的传感器信息显示终端

package serialPort; import java.awt.Button; import java.awt.Choice; import java.awt.Color; import java.awt.Font; import java.awt.Frame; import java.awt.Graphics; import java.awt.Image; import java.awt.Label; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.util.List; import java.util.TooManyListenersException; import javax.swing.JOptionPane; import gnu.io.SerialPort; import gnu.io.SerialPortEvent; import gnu.io.SerialPortEventListener; import serialException.*; /** * 监测数据显示类 * @author Zhong * */ public class DataView extends Frame { /** * */ private static final long serialVersionUID = 1L; Client client = null; private List<String> commList = null; //保存可用端口号 private SerialPort serialPort = null; //保存串口对象 private Font font = new Font("微软雅黑", Font.BOLD, 25); private Label tem = new Label("暂无数据", Label.CENTER); //温度 private Label hum = new Label("暂无数据", Label.CENTER); //湿度 private Label pa = new Label("暂无数据", Label.CENTER); //压强 private Label rain = new Label("暂无数据", Label.CENTER); //雨量 private Label win_sp = new Label("暂无数据", Label.CENTER); //风速 private Label win_dir = new Label("暂无数据", Label.CENTER); //风向 private Choice commChoice = new Choice(); //串口选择（下拉框） private Choice bpsChoice = new Choice(); //波特率选择 private Button openSerialButton = new Button("打开串口"); Image offScreen = null; //重画时的画布 //设置window的icon Toolkit toolKit = getToolkit(); Image icon = toolKit.getImage(DataView.class.getResource("computer.png")); /** * 类的构造方法 * @param client */ public DataView(Client client) { this.client = client; commList = SerialTool.findPort(); //程序初始化时就扫描一次有效串口 } /** * 主菜单窗口显示； * 添加Label、按钮、下拉条及相关事件监听； */ public void dataFrame() { this.setBounds(client.LOC_X, client.LOC_Y, client.WIDTH, client.HEIGHT); this.setTitle("智能家居系统"); this.setIconImage(icon); this.setBackground(Color.white); this.setLayout(null); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent arg0) { if (serialPort != null) { //程序退出时关闭串口释放资源 SerialTool.closePort(serialPort); } System.exit(0); } }); tem.setBounds(140, 103, 225, 50); tem.setBackground(Color.black); tem.setFont(font); tem.setForeground(Color.white); add(tem); hum.setBounds(520, 103, 225, 50); hum.setBackground(Color.black); hum.setFont(font); hum.setForeground(Color.white); add(hum); pa.setBounds(140, 193, 225, 50); pa.setBackground(Color.black); pa.setFont(font); pa.setForeground(Color.white); add(pa); rain.setBounds(520, 193, 225, 50); rain.setBackground(Color.black); rain.setFont(font); rain.setForeground(Color.white); add(rain); win_sp.setBounds(140, 283, 225, 50); win_sp.setBackground(Color.black); win_sp.setFont(font); win_sp.setForeground(Color.white); add(win_sp); win_dir.setBounds(520, 283, 225, 50); win_dir.setBackground(Color.black); win_dir.setFont(font); win_dir.setForeground(Color.white); add(win_dir); //添加串口选择选项 commChoice.setBounds(160, 397, 200, 200); //检查是否有可用串口，有则加入选项中 if (commList == null || commList.size()<1) { JOptionPane.showMessageDialog(null, "没有搜索到有效串口！", "错误", JOptionPane.INFORMATION_MESSAGE); } else { for (String s : commList) { commChoice.add(s); } } add(commChoice); //添加波特率选项 bpsChoice.setBounds(526, 396, 200, 200); bpsChoice.add("115200"); bpsChoice.add("1200"); bpsChoice.add("2400"); bpsChoice.add("4800"); bpsChoice.add("9600"); bpsChoice.add("14400"); bpsChoice.add("19200"); bpsChoice.add("115200"); add(bpsChoice); //添加打开串口按钮 openSerialButton.setBounds(250, 490, 300, 50); openSerialButton.setBackground(Color.lightGray); openSerialButton.setFont(new Font("微软雅黑", Font.BOLD, 20)); openSerialButton.setForeground(Color.darkGray); add(openSerialButton); //添加打开串口按钮的事件监听 openSerialButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { //获取串口名称 String commName = commChoice.getSelectedItem(); //获取波特率 String bpsStr = bpsChoice.getSelectedItem(); //检查串口名称是否获取正确 if (commName == null || commName.equals("")) { JOptionPane.showMessageDialog(null, "没有搜索到有效串口！", "错误", JOptionPane.INFORMATION_MESSAGE); } else { //检查波特率是否获取正确 if (bpsStr == null || bpsStr.equals("")) { JOptionPane.showMessageDialog(null, "波特率获取错误！", "错误", JOptionPane.INFORMATION_MESSAGE); } else { //串口名、波特率均获取正确时 int bps = Integer.parseInt(bpsStr); try { //获取指定端口名及波特率的串口对象 serialPort = SerialTool.openPort(commName, bps); //在该串口对象上添加监听器 SerialTool.addListener(serialPort, new SerialListener()); //监听成功进行提示 JOptionPane.showMessageDialog(null, "监听成功，稍后将显示监测数据！", "提示", JOptionPane.INFORMATION_MESSAGE); } catch (SerialPortParameterFailure | NotASerialPort | NoSuchPort | PortInUse | TooManyListeners e1) { //发生错误时使用一个Dialog提示具体的错误信息 JOptionPane.showMessageDialog(null, e1, "错误", JOptionPane.INFORMATION_MESSAGE); } } } } }); this.setResizable(false); new Thread(new RepaintThread()).start(); //启动重画线程 } /** * 画出主界面组件元素 */ public void paint(Graphics g) { Color c = g.getColor(); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 温度： ", 45, 130); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 湿度： ", 425, 130); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 可燃气： ", 45, 220); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 光敏： ", 425, 220); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 红外： ", 45, 310); g.setColor(Color.black); g.setFont(new Font("微软雅黑", Font.BOLD, 25)); g.drawString(" 雨量： ", 425, 310); g.setColor(Color.gray); g.setFont(new Font("微软雅黑", Font.BOLD, 20)); g.drawString(" 串口选择： ", 45, 410); g.setColor(Color.gray); g.setFont(new Font("微软雅黑", Font.BOLD, 20)); g.drawString(" 波特率： ", 425, 410); } /** * 双缓冲方式重画界面各元素组件 */ public void update(Graphics g) { if (offScreen == null) offScreen = this.createImage(Client.WIDTH, Client.HEIGHT); Graphics gOffScreen = offScreen.getGraphics(); Color c = gOffScreen.getColor(); gOffScreen.setColor(Color.white); gOffScreen.fillRect(0, 0, Client.WIDTH, Client.HEIGHT); //重画背景画布 this.paint(gOffScreen); //重画界面元素 gOffScreen.setColor(c); g.drawImage(offScreen, 0, 0, null); //将新画好的画布“贴”在原画布上 } /* * 重画线程（每隔30毫秒重画一次） */ private class RepaintThread implements Runnable { public void run() { while(true) { //调用重画方法 repaint(); //扫描可用串口 commList = SerialTool.findPort(); if (commList != null && commList.size()>0) { //添加新扫描到的可用串口 for (String s : commList) { //该串口名是否已存在，初始默认为不存在（在commList里存在但在commChoice�