获取模拟电压值(第二篇)

来源：互联网发布：linux 修改文件时间编辑：程序博客网时间：2024/05/16 00:46

当序列的长度小于13或者协议字段不为85时，要提出警告“不是酒精传感器的数据，或者长度要等于13!”。如下面的两个图所示：

图（1）“字段长度小于13”给出警告

图（2）“倒数第3字段要为85”，否则给出“不是酒精传感器的数据!”的警告。

图（3）“酒精传感器”数据，电压模拟值是“倒数第2字段”

//文件：ArrayMinValue3.java

package cn.ch.da;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JButton;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JTextField;import javax.swing.UIManager;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;public class ArrayMinValue3 extends JFrame {private static final long serialVersionUID = 5223259684601017509L;private JPanel contentPane;private JTextField textField;private JLabel label;private JLabel label_1;/** * Launch the application. */public static void main(String[] args) {try {UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");} catch (Throwable e) {e.printStackTrace();}EventQueue.invokeLater(new Runnable() {public void run() {try {ArrayMinValue3 frame = new ArrayMinValue3();frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/** * Create the frame. */public ArrayMinValue3() {// 标题：获取一维数组模拟电压值setTitle("\u83B7\u53D6\u4E00\u7EF4\u6570\u7EC4\u6a21\u62df\u7535\u538b\u503C");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 450, 149);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(null);textField = new JTextField();textField.setBounds(6, 36, 414, 30);contentPane.add(textField);textField.setColumns(10);// 按钮显示的文字为“计算”JButton button = new JButton("\u8BA1\u7B97");button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {do_button_actionPerformed3(e);}});button.setBounds(16, 76, 90, 30);contentPane.add(button);label = new JLabel("\u6a21\u62df\u7535\u538b\u503C\uFF1A");label.setBounds(116, 82, 304, 18);contentPane.add(label);// 请在文本框中输入多个整数，以空格为分隔符。例如：3 5 562 125label_1 = new JLabel("\u8BF7\u5728\u6587\u672C\u6846\u4E2D\u8F93\u5165\u591A\u4E2A\u6574\u6570\uFF0C\u4EE5\u7A7A\u683C\u4E3A\u5206\u9694\u7B26\u3002\u4F8B\u5982\uFF1A3 5 2 562 125");label_1.setBounds(6, 6, 422, 18);contentPane.add(label_1);}protected void do_button_actionPerformed3(ActionEvent e) {String arrayStr = textField.getText().trim();for (int i = 0; i < arrayStr.length(); i++) {// 过滤非法输入char charAt = arrayStr.charAt(i);if (!Character.isLetterOrDigit(charAt) && charAt != ' ') {JOptionPane.showMessageDialog(null, "输入包含非数字内容");textField.setText("");return;}}String[] numStrs = arrayStr.split(" {1,}");// 分割字符串int[] numArray = new int[numStrs.length];// 创建整数数组// 转换输入为整数数组for (int i = 0; i < numArray.length; i++) {numArray[i] = Integer.parseInt(numStrs[i], 16);// 十六进制转换为十进制}for (int j = 0; j < numArray.length; j++) {if (numArray.length != 13)label.setText("长度要等于13!");else {if (133 == numArray[10]) { // 当第11个数为Ox85=133时，输出电压模拟值label.setText("电压模拟值为：" + numArray[11]);} elselabel.setText("不是酒精传感器的数据!");}}}}

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