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学完JAVA Swing，不加点餐？？？

Liunx 全操作过程【JDK1.8配置、MySQL、Docker、mariaDB、nginx、tomcat、redis、各种问题解决总结】

JDK1.8新特性

UML统一建模语言

此次图形界面的增删改查，基本上非常简单，想要快速看原项目，请直接打开连接：链接：https://pan.baidu.com/s/1lFsOTH9D9Z-3W9yRDAVF7w
提取码：435o

关于各位新手不知道怎么启动，这个视频里有如何运行的过程。

链接：https://pan.baidu.com/s/1ud3qyL1bOqOSCFGoTbRDEg
提取码：i90x

首先，看看界面样子吧。

因为我用的eclipse开发的swing，所以我在eclipse下载了一个插件，如果你们导项目进去下载了插件，是可以进行图形化设计。而插件就自行百度就行，简便方式打开Help -> Eclipse Marketplace -> 直接搜索Windows，然后找到Windowsbuilder，下载下来，就可以使用了，如果没有搜索到，直接点击查询，将Windowsbuilder下载下来安装就行。还不行就按照网上的方式安装就行，下面几张截图，

废话不多说，直接贴代码

jframe主界面代码

package com.lisonglin.frame;import java.awt.BorderLayout;
import java.awt.EventQueue;import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableModel;import com.lisonglin.model.Student;
import com.lisonglin.service.StudentService;
import com.lisonglin.util.DateUtil;import javax.swing.JTable;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.List;
import java.awt.event.ActionEvent;public class MainFrame extends JFrame {private JPanel contentPane;private JTable table;private String[] columnCount= {"序号","姓名","成绩","生日","城市"};private List<Student> list;public static Student stu;public static MainFrame frame;/*** Launch the application.*/public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {frame = new MainFrame();//窗口居中frame.setLocationRelativeTo(null);frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/*** Create the frame.*/public MainFrame() {setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 764, 469);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(null);JScrollPane scrollPane = new JScrollPane();scrollPane.setBounds(29, 58, 692, 332);contentPane.add(scrollPane);table = new JTable();scrollPane.setViewportView(table);JButton button = new JButton("查询");button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {quaryAll();}});button.setBounds(58, 22, 93, 23);contentPane.add(button);JButton button_1 = new JButton("添加");button_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {new FromFjame().setVisible(true);}});button_1.setBounds(205, 22, 93, 23);contentPane.add(button_1);//全屏
//      setExtendedState(JFrame.MAXIMIZED_BOTH);JButton button_2 = new JButton("修改");button_2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {update();quaryAll();}});button_2.setBounds(357, 22, 93, 23);contentPane.add(button_2);JButton button_3 = new JButton("删除");button_3.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {remove();quaryAll();}});button_3.setBounds(539, 22, 93, 23);contentPane.add(button_3);}//查询public void quaryAll() {StudentService ss=new StudentService();list = ss.queryAll();if(list==null) {JOptionPane.showMessageDialog(null, "服务器繁忙");return;}Object[][] data = DateUtil.listToArray(list);table.setModel(new DefaultTableModel(data, columnCount));}//删除private void remove() {int i = table.getSelectedRow();Student s = list.get(i);int code = new StudentService().delete(s.getId());if(code==0) {JOptionPane.showMessageDialog(null, "删除成功");return;}else {JOptionPane.showMessageDialog(null,DateUtil.errors.get(code) );}quaryAll();}//修改private void update() {int i = table.getSelectedRow();stu = list.get(i);new FromFjame().setVisible(true);}
}

jframe修改/增加界面

package com.lisonglin.frame;import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.time.LocalDate;import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;import com.lisonglin.model.Student;
import com.lisonglin.service.StudentService;
import com.lisonglin.util.DateUtil;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;public class FromFjame extends JFrame {/*** */private static final long serialVersionUID = 1L;private JPanel contentPane;private JTextField textField;private JTextField textField_1;private JTextField textField_3;private JComboBox comboBox;private JComboBox comboBox_1;private JComboBox comboBox_2;public FromFjame() {setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);setBounds(100, 100, 314, 436);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(null);JLabel label = new JLabel("添加学生");label.setFont(new Font("宋体", Font.PLAIN, 17));label.setBounds(118, 20, 78, 39);contentPane.add(label);JLabel label_1 = new JLabel("姓名");label_1.setBounds(23, 71, 40, 15);contentPane.add(label_1);textField = new JTextField();textField.setBounds(87, 68, 155, 21);contentPane.add(textField);textField.setColumns(10);JLabel label_2 = new JLabel("成绩");label_2.setBounds(23, 128, 40, 15);contentPane.add(label_2);textField_1 = new JTextField();textField_1.setBounds(87, 125, 155, 21);contentPane.add(textField_1);textField_1.setColumns(10);JLabel lblNewLabel = new JLabel("生日");lblNewLabel.setBounds(23, 191, 32, 15);contentPane.add(lblNewLabel);JLabel label_3 = new JLabel("城市");label_3.setBounds(23, 251, 32, 15);contentPane.add(label_3);textField_3 = new JTextField();textField_3.setBounds(87, 248, 155, 21);contentPane.add(textField_3);textField_3.setColumns(10);comboBox = new JComboBox();comboBox.addItemListener(new ItemListener() {public void itemStateChanged(ItemEvent e) {addDay();}});comboBox.setBounds(87, 188, 54, 21);contentPane.add(comboBox);comboBox_1 = new JComboBox();comboBox_1.addItemListener(new ItemListener() {public void itemStateChanged(ItemEvent e) {addDay();}});comboBox_1.setBounds(151, 188, 47, 21);contentPane.add(comboBox_1);comboBox_2 = new JComboBox();comboBox_2.setBounds(202, 188, 40, 21);contentPane.add(comboBox_2);//选择框添加内容addBirth();JButton button = new JButton("添加");button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {if(MainFrame.stu==null) {add();}else {update();}}});button.setBounds(37, 325, 93, 23);contentPane.add(button);JButton button_1 = new JButton("返回");button_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {//每次返回清空信息MainFrame.stu=null;//退出dispose();}});button_1.setBounds(169, 325, 93, 23);contentPane.add(button_1);//当点击的行数的信息不为空时，进行下面操作if(MainFrame.stu!=null) {textField.setText(MainFrame.stu.getName());textField_1.setText(MainFrame.stu.getScore()+"");textField_3.setText(MainFrame.stu.getCity());LocalDate birth =MainFrame.stu.getBirth();comboBox.setSelectedItem(birth.getYear());comboBox_1.setSelectedItem(birth.getMonthValue());comboBox_2.setSelectedItem(birth.getDayOfMonth());button.setText("修改");}}//选择框填充内容private void addBirth() {int year=LocalDate.now().getYear();for(int i=1970;i<=year;i++) {comboBox.addItem(i);}for(int i=1;i<=12;i++) {comboBox_1.addItem(i);}}private void addDay() {int year=1970;int month=1;int day=0;Object oYear = comboBox.getSelectedItem();Object oMonth =comboBox_1.getSelectedItem();if(oYear==null||oMonth==null) {return;}else {year=(int) oYear;month=(int) oMonth;}boolean flag=(year%4==0&&year%100!=0)||year%400==0;switch(month) {case 1:case 3:case 5:case 7:case 8:case 10:case 12:day=31;break;case 2:day=flag?28:29;break;default:day=30;break;}comboBox_2.removeAllItems();for(int i=1;i<=day;i++) {comboBox_2.addItem(i);}}//增加private void add() {String name=textField.getText();String strSouce=textField_1.getText();String city=textField_3.getText();int year=(int)comboBox.getSelectedItem();int month=(int) comboBox_1.getSelectedItem();int day=(int) comboBox_2.getSelectedItem();Student s=new Student(name,Double.parseDouble(strSouce),LocalDate.of(year, month, day),city);int insert = new StudentService().insert(s);       if(insert==0) {JOptionPane.showMessageDialog(null, "添加成功");textField.setText("");textField_1.setText("");textField_3.setText("");return;}else {JOptionPane.showMessageDialog(null, DateUtil.errors.get(insert));}}//修改private void update() {String name=textField.getText();String strSouce=textField_1.getText();String city=textField_3.getText();int year=(int)comboBox.getSelectedItem();int month=(int) comboBox_1.getSelectedItem();int day=(int) comboBox_2.getSelectedItem();MainFrame.stu.setName(name);MainFrame.stu.setScore(Double.parseDouble(strSouce));MainFrame.stu.setBirth(LocalDate.of(year, month, day));MainFrame.stu.setCity(city);int i = new StudentService().update(MainFrame.stu);if(i==0) {JOptionPane.showMessageDialog(null, "修改成功");MainFrame.stu=null;textField.setText("");textField_1.setText("");textField_3.setText("");MainFrame.frame.quaryAll();dispose();return;}else {JOptionPane.showMessageDialog(null, DateUtil.errors.get(i));}}
}

连接数据库工具类

package com.lisonglin.util;import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;import com.mchange.v2.c3p0.ComboPooledDataSource;public class JdbcUtil {public static final ComboPooledDataSource ds=new ComboPooledDataSource();static {//加载连接数据库的信息try {InputStream is =new FileInputStream("jdbcinfo.config");Properties porp =new Properties();porp.load(is);is.close();//获取连接数据库信息String user =porp.getProperty("user");String pwd =porp.getProperty("pwd");String url=porp.getProperty("url");String driver =porp.getProperty("driver");//设置链接库的信息ds.setUser(user);ds.setDriverClass(driver);ds.setJdbcUrl(url);ds.setPassword(pwd);} catch (Exception e) {e.printStackTrace();}}public static Connection getConnection() {try {return ds.getConnection();} catch (SQLException e) {e.printStackTrace();}return null;}public static void release(Connection conn) {try {conn.close();} catch (SQLException e) {e.printStackTrace();}}}

配置信息

user=root
pwd=123
url=jdbc:mysql://localhost:3306/test?userSSL=false
driver=com.mysql.jdbc.Driver

数据访问包--增删改查实现代码

package com.lisonglin.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.lisonglin.model.Student;
import com.lisonglin.util.DateUtil;
import com.lisonglin.util.JdbcUtil;public class StudentDao {public void add(Student s) throws SQLException {//获取连接Connection conn = JdbcUtil.getConnection();//准备sqlString sql="insert into stus values(null,?,?,?,?)";//获取PreparedStatementPreparedStatement ps=conn.prepareStatement(sql);//填充占位符ps.setString(1, s.getName());ps.setDouble(2, s.getScore());ps.setObject(3, s.getBirth());ps.setString(4, s.getCity());//执行sqlps.executeUpdate();//关闭连接JdbcUtil.release(conn);}public void detele(int id) throws SQLException {//获取连接Connection conn = JdbcUtil.getConnection();//准备sqlString sql="delete from stus where id=?";//获取PreparedStatementPreparedStatement ps=conn.prepareStatement(sql);//填充占位符ps.setInt(1, id);//执行sqlps.executeUpdate();//关闭连接JdbcUtil.release(conn);}public void update(Student s) throws SQLException {Connection conn = JdbcUtil.getConnection();String sql="update stus set name=?,score=?,birth=?,city=? where id=?";PreparedStatement ps=conn.prepareStatement(sql);ps.setString(1, s.getName());ps.setDouble(2, s.getScore());ps.setObject(3, s.getBirth());ps.setString(4, s.getCity());ps.setInt(5, s.getId());ps.executeUpdate();JdbcUtil.release(conn);}public List<Student> queryAll() throws SQLException{List<Student> stus=new ArrayList<>();//获取连接Connection conn = JdbcUtil.getConnection();//准备sqlString sql="select * from stus";//获取PreparedStatementPreparedStatement ps=conn.prepareStatement(sql);//执行sqlResultSet rs = ps.executeQuery();while(rs.next()) {Student s=new Student();s.setId(rs.getInt(1));s.setName(rs.getString(2));s.setScore(rs.getDouble(3));s.setBirth(DateUtil.dateToLocalDate(rs.getDate(4)));s.setCity(rs.getString(5));stus.add(s);}//关闭连接JdbcUtil.release(conn);return stus;}
}

数据库就不贴了，打包里面有。

=========分割线===========

大家对于此项目有诸多环境问题，基本上私信我的都是那个jar包没有，数据库没有导入。

欢迎大家支持我！有稳定收入的各位可以支持一下，谢谢，支付宝二维码！

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JAVA swing实现简单增删改查

前言

学完JAVA Swing，不加点餐？？？

关于各位新手不知道怎么启动，这个视频里有如何运行的过程。

JAVA swing实现简单增删改查相关推荐

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