登录界面

src/UserLogin-master/UserLogin-master/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="lib" path="libs/mysql-connector-j-8.0.31.jar"/>
+	<classpathentry kind="lib" path="out/production/UserLogin-master/com/weh/libs/mysql-connector-j-8.0.31.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

src/UserLogin-master/UserLogin-master/.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml

src/UserLogin-master/UserLogin-master/.idea/libraries/jdbc.xml

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+<component name="libraryTable">
+  <library name="jdbc">
+    <CLASSES>
+      <root url="jar://D:/Java/mysql-connector-j-8.0.31/mysql-connector-j-8.0.31/mysql-connector-j-8.0.31.jar!/com/mysql/jdbc" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

src/UserLogin-master/UserLogin-master/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="18" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/UserLogin-master.iml" filepath="$PROJECT_DIR$/UserLogin-master.iml" />
+    </modules>
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>UserLogin-master</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

src/UserLogin-master/UserLogin-master/README.md

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+Java--用户登录界面（连接Mysql数据库）
+![输入图片说明](https://images.gitee.com/uploads/images/2022/0413/184214_a8326845_9840785.png "未标题-1.png")

src/UserLogin-master/UserLogin-master/User/.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml

src/UserLogin-master/UserLogin-master/User/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_18" project-jdk-name="18" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/User/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/User.iml" filepath="$PROJECT_DIR$/User.iml" />
+    </modules>
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/User/Login.java

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+package com.weh.User;
+
+//登录所需要的数据转入
+public class Login {
+    String id;
+    String password;
+    LoginDemo loginDemo;
+    boolean loginSuccess = false;
+
+    public LoginDemo getLoginDemo() {
+        return loginDemo;
+    }
+    public void setLoginDemo(LoginDemo loginDemo) {
+        this.loginDemo = loginDemo;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public boolean isLoginSuccess() {
+        return loginSuccess;
+    }
+
+    public void setLoginSuccess(boolean loginSuccess) {
+        this.loginSuccess = loginSuccess;
+    }
+}

src/UserLogin-master/UserLogin-master/User/LoginDemo.java

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+package com.weh.User;
+
+import javax.swing.*;
+import javax.swing.plaf.basic.BasicButtonUI;
+import javax.swing.plaf.basic.BasicPanelUI;
+import java.awt.*;
+import java.sql.SQLException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/*
+*   登录窗口
+*/
+public class LoginDemo extends JFrame {
+    public LoginDemo() {
+        super("HI登录界面");
+        //获取显示屏的大小
+        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
+        int sw = screenSize.width;
+        int sh = screenSize.height;
+        //窗口宽高大小
+        int width = 500;
+        int height = 340;
+        this.setBounds((sw - width) / 2, (sh - height) / 2, width, height);//设置窗口的位置
+        this.setIconImage(Toolkit.getDefaultToolkit().getImage(LoginDemo.class.getResource("/com/weh/img/chatping.jpg")));//窗口图标
+        ImageIcon background = new ImageIcon(LoginDemo.class.getResource("/com/weh/img/chat.jpg")); //背景图片
+        JLabel label = new JLabel(background); // 把背景图片显示在一个标签里面
+        label.setBounds(0, 0, this.getWidth(), this.getHeight()); // 把标签的大小位置设置为图片刚好填充整个面板
+        JPanel imagePanel = (JPanel) this.getContentPane(); // 把内容窗格转化为JPanel，否则不能用方法setOpaque()来使内容窗格透明
+        imagePanel.setOpaque(false); // 窗口透明
+        this.getLayeredPane().add(label, Integer.valueOf(Integer.MIN_VALUE)); // 把背景图片添加到分层窗格的最底层作为背景
+
+        JPanel panel = new JPanel();
+        //盒子模块
+        Box ubox = Box.createHorizontalBox();
+        Box pbox = Box.createHorizontalBox();
+        Box vbox = Box.createVerticalBox();
+
+        //创建界面工具类
+        JLabel uLabel = new JLabel("   HI :"); //文本设计
+        uLabel.setFont(new Font("微软雅黑", Font.BOLD, 15));
+        uLabel.setForeground(new Color(0xFBFCFD)); // 设置前景色
+        JTextField uField = new JTextField(); //输入框
+        uField.setFont(new Font("Arial", Font.BOLD, 15));
+        uField.setToolTipText("HI");// 悬停显示
+        uField.setColumns(12);
+
+        JLabel pLabel = new JLabel("密  码:");    //文本设计
+        pLabel.setFont(new Font("微软雅黑", Font.BOLD, 15));
+        pLabel.setForeground(new Color(0xFBFCFD)); // 设置前景色
+        JPasswordField pFd = new JPasswordField();
+        pFd.setFont(new Font("Arial", Font.BOLD, 15));
+        pFd.setToolTipText("密码");// 悬停显示
+        pFd.setColumns(12);
+        // 如果使用其他回显字符，可以设置大小，但是星星不可以。。。
+        pFd.setEchoChar('●');// 星星符号
+
+        JButton button1 = new JButton("登录");    //登录按钮
+        button1.setToolTipText("登录");// 悬停显示
+        JButton button2 = new JButton("重置");    //重置按钮
+        button2.setToolTipText("重置");// 悬停显示
+        JMenu Menubutton3 = new JMenu("注册账号");    //重置按钮
+        Menubutton3.setToolTipText("注册账号");// 悬停显示
+        // 字体设置
+        button1.setFont(new Font("微软雅黑", Font.BOLD, 18));
+        button1.setForeground(Color.white); // 设置前景色
+        button1.setBackground(new Color(0x08BDFD));
+        button1.setDefaultCapable(true);
+        button1.setBounds((this.getWidth() - 120 - 180) / 2, 250, 120, 30); // 设置按钮位置，及按钮大小
+        button1.setCursor(new Cursor(Cursor.HAND_CURSOR));  //鼠标手势的设置
+
+        button2.setFont(new Font("微软雅黑", Font.BOLD, 18));
+        button2.setForeground(Color.white); // 设置前景色
+        button2.setBackground(new Color(0x08BDFD));
+        button2.setDefaultCapable(true);
+        button2.setCursor(new Cursor(Cursor.HAND_CURSOR));//鼠标手势的设置
+        button2.setBounds((this.getWidth() - 120 + 180) / 2, 250, 120, 30); // 设置按钮位置，及按钮大小
+
+        Menubutton3.setFont(new Font("微软雅黑", Font.BOLD, 12));
+        Menubutton3.setForeground(new Color(0x02FCFC)); // 设置前景色
+        Menubutton3.setUI(new BasicButtonUI());  //恢复基本视觉效果
+        Menubutton3.setBounds(5, 280, 85, 20); // 设置按钮位置，及按钮大小
+        Menubutton3.setContentAreaFilled(false); // 设置按钮透明
+        Menubutton3.setCursor(new Cursor(Cursor.HAND_CURSOR));
+
+        /*
+         分区模块布局
+        */
+        //小盒子，设计用户名布局模块
+        ubox.add(uLabel);
+        ubox.add(Box.createHorizontalStrut(5));//插入中间盒子宽度为5，作为相邻文本的空隙
+        ubox.add(uField);
+        //小盒子，设计密码框布局模块
+        pbox.add(pLabel);
+        pbox.add(Box.createHorizontalStrut(5));//插入中间盒子宽度为5，作为相邻文本的空隙
+        pbox.add(pFd);
+
+        //大盒子
+        vbox.add(Box.createVerticalStrut(80));//插入中间盒子高度为80，作为上下文本的空隙
+        vbox.add(ubox);
+        vbox.add(Box.createVerticalStrut(60));//插入中间盒子高度为60，作为上下文本的空隙
+        vbox.add(pbox);
+
+
+        uField.setText("3037502828");   //设置默认账号
+        pFd.setText("123456");  //设置默认密码
+        panel.setUI(new BasicPanelUI());  //恢复基本视觉效果
+        panel.setOpaque(false); // 面板透明
+        panel.add(vbox, BorderLayout.CENTER);//vbox盒子居中
+        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
+        this.add(button1);
+        this.add(button2);
+        this.add(Menubutton3);
+        this.add(panel);
+        this.setVisible(true);
+        this.setResizable(false);
+
+        //点击按钮的监听事件
+        button1.addActionListener(e -> {    //登录按钮监听事件
+            try {
+                //正则法则，验证输入数据的字符是否都是数字
+                String HI =uField.getText().trim();
+                String regex = "^\\d+$";
+                Pattern p =Pattern.compile(regex);
+                Matcher m = p.matcher(HI);
+                if(m.matches()){//匹配成功，则传入输入的数据
+                    init(this,uField, pFd);
+                }else {
+                    JOptionPane.showMessageDialog(null, "只能输入数字，请正确输入！", "警告", JOptionPane.WARNING_MESSAGE);
+                }
+            } catch (Exception exception) {
+                JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+            }
+        });
+        button2.addActionListener(e -> {//重置按钮监听事件
+            uField.setText("");
+            pFd.setText("");
+        });
+        Menubutton3.addActionListener(e -> {//跳转到注册窗口按钮监听事件
+            try {
+                this.dispose();
+                Thread.sleep(1000);
+                new RegisterDemo();
+            } catch (InterruptedException interruptedException) {
+                JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+            }
+        });
+    }
+
+    public void init(LoginDemo loginDemo,JTextField uField, JPasswordField pFd) {
+        Login login;
+        UserLogin UserLogin;
+        try {
+            login=new Login();
+            login.setLoginDemo(loginDemo);
+            login.setId(uField.getText());
+            char[] p = pFd.getPassword();
+            login.setPassword(new String(p));
+            UserLogin = new UserLogin();
+            UserLogin.readLogin(login);
+        } catch (SQLException | ClassNotFoundException e) {
+            JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+        }
+
+    }
+}

src/UserLogin-master/UserLogin-master/User/Register.java

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+package com.weh.User;
+
+//注册所需要的数据转入
+public class Register {
+    String name;
+    String id;
+    String password;
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}
+

src/UserLogin-master/UserLogin-master/User/RegisterDemo.java

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+package com.weh.User;
+
+import javax.swing.*;
+import javax.swing.plaf.basic.BasicButtonUI;
+import javax.swing.plaf.basic.BasicPanelUI;
+import java.awt.*;
+import java.sql.SQLException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/*
+ *   注册窗口
+ */
+public class RegisterDemo extends JFrame {
+    public RegisterDemo() {
+        //获取显示屏的大小
+        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
+        int sw = screenSize.width;
+        int sh = screenSize.height;
+        this.setTitle("HI注册界面");
+        int width = 500;
+        int height = 600;
+        this.setBounds((sw - width) / 2, (sh - height) / 2, width, height);// 设置窗口的位置
+        this.setIconImage(Toolkit.getDefaultToolkit().getImage(RegisterDemo.class.getResource("/com/weh/img/chatping.jpg")));// 图标
+        ImageIcon background = new ImageIcon(RegisterDemo.class.getResource("/com/weh/img/chat.gif")); // 背景图片
+        JLabel label = new JLabel(background); // 把背景图片显示在一个标签里面
+        label.setBounds(0, 0, this.getWidth(), this.getHeight()); // 把标签的大小位置设置为图片刚好填充整个面板
+        JPanel imagePanel = (JPanel) this.getContentPane(); // 把内容窗格转化为JPanel，否则不能用方法setOpaque()来使内容窗格透明
+        imagePanel.setOpaque(false); // 窗口透明
+        this.getLayeredPane().add(label, Integer.valueOf(Integer.MIN_VALUE)); // 把背景图片添加到分层窗格的最底层作为背景
+
+        //盒子模块
+        Box namebox = Box.createHorizontalBox();
+        Box ubox = Box.createHorizontalBox();
+        Box pbox = Box.createHorizontalBox();
+        Box repbox = Box.createHorizontalBox();
+        Box vbox = Box.createVerticalBox();
+
+        JLabel nameLabel = new JLabel("用户名 :"); //文本设计
+        nameLabel.setFont(new Font("微软雅黑", Font.BOLD, 13));
+        nameLabel.setForeground(new Color(0x02FFFF)); // 设置前景色
+        JTextField nameField = new JTextField(); //输入框
+        nameField.setFont(new Font("黑体", Font.BOLD, 15));
+        nameField.setToolTipText("用户名");
+        nameField.setColumns(15);
+
+
+        JLabel uLabel = new JLabel("       HI :"); //文本设计
+        uLabel.setFont(new Font("微软雅黑", Font.BOLD, 13));
+        uLabel.setForeground(new Color(0x02FFFF)); // 设置前景色
+        JTextField uField = new JTextField(); //输入框
+        uField.setFont(new Font("Arial", Font.BOLD, 15));
+        uField.setToolTipText("HI");
+        uField.setColumns(15);
+
+        JLabel pLabel = new JLabel("密    码 :");    //文本设计
+        pLabel.setFont(new Font("微软雅黑", Font.BOLD, 13));
+        pLabel.setForeground(new Color(0x02FFFF)); // 设置前景色
+        JPasswordField pFd = new JPasswordField();
+        pFd.setFont(new Font("Arial", Font.BOLD, 15));
+        pFd.setToolTipText("密码");// 悬停显示
+        pFd.setColumns(15);
+        // 如果使用其他回显字符，可以设置大小，但是星星不可以。。。
+        pFd.setEchoChar('●');// 星星符号
+
+
+        JLabel RepLabel = new JLabel("确认密码:");    //文本设计
+        RepLabel.setFont(new Font("微软雅黑", Font.BOLD, 13));
+        RepLabel.setForeground(new Color(0x02FFFF)); // 设置前景色
+        JPasswordField RepFd = new JPasswordField();
+        RepFd.setFont(new Font("Arial", Font.BOLD, 15));
+        RepFd.setToolTipText("确认密码");// 悬停显示
+        RepFd.setColumns(15);
+        // 如果使用其他回显字符，可以设置大小，但是星星不可以。。。
+        RepFd.setEchoChar('●');// 星星符号
+
+        JButton button1 = new JButton("注册");    //登录按钮
+        button1.setToolTipText("注册");// 悬停显示
+        JButton button2 = new JButton("重置");    //重置按钮
+        button2.setToolTipText("重置");// 悬停显示
+        JMenu Menubutton3 = new JMenu("返回登录");    //重置按钮
+        Menubutton3.setToolTipText("返回登录");// 悬停显示
+
+        button1.setFont(new Font("微软雅黑", Font.BOLD, 18));
+        button1.setForeground(Color.white); // 设置前景色
+        button1.setBackground(new Color(0x08BDFD));
+        button1.setDefaultCapable(true);
+        button1.setBounds((this.getWidth() - 120 - 180) / 2, this.getHeight() - 150, 120, 30); // 设置按钮位置，及按钮大小
+        button1.setCursor(new Cursor(Cursor.HAND_CURSOR));  //鼠标手势的设置
+
+        button2.setFont(new Font("微软雅黑", Font.BOLD, 18));
+        button2.setForeground(Color.white); // 设置前景色
+        button2.setBackground(new Color(0x08BDFD));
+        button2.setDefaultCapable(true);
+        button2.setCursor(new Cursor(Cursor.HAND_CURSOR));//鼠标手势的设置
+        button2.setBounds((this.getWidth() - 120 + 180) / 2, this.getHeight() - 150, 120, 30); // 设置按钮位置，及按钮大小
+
+        Menubutton3.setFont(new Font("微软雅黑", Font.BOLD, 12));
+        Menubutton3.setForeground(Color.white); // 设置前景色
+        Menubutton3.setBackground(new Color(0x08BDFD));
+        Menubutton3.setUI(new BasicButtonUI());  //恢复基本视觉效果
+        Menubutton3.setBounds(5, this.getHeight() - 70, 85, 20); // 设置按钮位置，及按钮大小
+        Menubutton3.setContentAreaFilled(false); // 设置按钮透明
+        Menubutton3.setCursor(new Cursor(Cursor.HAND_CURSOR));
+
+        /*
+         分区模块布局
+        */
+
+        //小盒子，设计用户名模块
+        namebox.add(nameLabel);
+        namebox.add(Box.createHorizontalStrut(5));//插入中间盒子宽度为5，作为相邻文本的空隙
+        namebox.add(nameField);
+
+        ubox.add(uLabel);
+        ubox.add(Box.createHorizontalStrut(5));//插入中间盒子宽度为5，作为相邻文本的空隙
+        ubox.add(uField);
+        //小盒子，设计密码模块
+        pbox.add(pLabel);
+        pbox.add(Box.createHorizontalStrut(5));
+        pbox.add(pFd);
+
+        repbox.add(RepLabel);
+        repbox.add(Box.createHorizontalStrut(5));
+        repbox.add(RepFd);
+
+        vbox.add(Box.createVerticalStrut(90));//插入中间盒子高度为90，作为上下文本的空隙
+        vbox.add(namebox);
+        vbox.add(Box.createVerticalStrut(65));
+        vbox.add(ubox);
+        vbox.add(Box.createVerticalStrut(65));
+        vbox.add(pbox);
+        vbox.add(Box.createVerticalStrut(65));
+        vbox.add(repbox);
+
+
+        JPanel panel = new JPanel();
+        panel.setUI(new BasicPanelUI());  //恢复基本视觉效果
+        panel.setOpaque(false); // 面板透明
+        panel.add(vbox, BorderLayout.CENTER);
+        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
+        this.add(button1);
+        this.add(button2);
+        this.add(Menubutton3);
+        this.add(panel);
+        this.setVisible(true);
+        this.setResizable(false);
+
+        //注册按钮监听
+        button1.addActionListener(e -> {
+            String pField = new String(pFd.getPassword());//转换
+            String repField = new String(RepFd.getPassword());//转换
+            try {
+                if (nameField.getText().isEmpty() || pField.isEmpty() || repField.isEmpty()||uField.getText().isEmpty()) {
+                    if (nameField.getText().isEmpty()) {
+                        JOptionPane.showMessageDialog(null, "用户名不能为空", "提示", JOptionPane.WARNING_MESSAGE);
+                    } else if(uField.getText().isEmpty()){
+                        JOptionPane.showMessageDialog(null, "HI号不能为空", "提示", JOptionPane.WARNING_MESSAGE);
+                    }
+                    else if (pField.isEmpty()) {
+                        JOptionPane.showMessageDialog(null, "密码不能为空", "提示", JOptionPane.WARNING_MESSAGE);
+                    } else {
+                        JOptionPane.showMessageDialog(null, "确认密码不能为空", "提示", JOptionPane.WARNING_MESSAGE);
+                    }
+                } else {
+                    if (!pField.equals(repField)) {
+                        JOptionPane.showMessageDialog(null, "两次密码不一致", "提示", JOptionPane.WARNING_MESSAGE);
+                    } else {
+                        String HI =uField.getText().trim();
+                        String regex = "^\\d+$";
+                        Pattern p =Pattern.compile(regex);
+                        Matcher m = p.matcher(HI);
+                        if(m.matches()){
+                            init(nameField,uField, pFd);
+                        }else{
+                            JOptionPane.showMessageDialog(null, "HI号只能输入数字，请正确输入！", "警告", JOptionPane.WARNING_MESSAGE);
+                        }
+                    }
+                }
+            } catch (Exception exception) {
+                JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+            }
+        });
+
+        //重置按钮监听
+        button2.addActionListener(e -> {
+            nameField.setText(null);
+            uField.setText(null);
+            pFd.setText(null);
+            RepFd.setText(null);
+        });
+
+        //返回登录窗口按钮监听
+        Menubutton3.addActionListener(e -> {
+            try {
+                this.dispose();
+                Thread.sleep(1000);
+                new LoginDemo();
+            } catch (Exception exception) {
+                JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+            }
+        });
+    }
+
+    public void init(JTextField nameField,JTextField uField, JPasswordField pFd) {
+        Register register;
+        UserRegister userRegister;
+        try {
+            register = new Register();
+            register.setName(nameField.getText());
+            register.setId(uField.getText());
+            char[] p1 = pFd.getPassword();
+            register.setPassword(new String(p1));
+            userRegister = new UserRegister();
+            userRegister.writeRegister(register);
+            uField.setText(null);
+           nameField.setText(null);
+        } catch (SQLException e) {
+            JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.WARNING_MESSAGE);
+        }
+    }
+}
+

src/UserLogin-master/UserLogin-master/User/User.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="com.weh.User" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/UserLogin-master/UserLogin-master/User/UserLogin.java

@@ -0,0 +1,64 @@
+package com.weh.User;
+
+import com.mysql.cj.jdbc.MysqlDataSource;
+import javax.swing.*;
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+//匹配输入的登录数据，以及对数据库驱动的开启
+public class UserLogin {
+    Connection connection = null;
+    PreparedStatement prepare;
+    ResultSet resultSet;
+    boolean loginSuccess;
+
+    public UserLogin() throws SQLException, ClassNotFoundException {
+        //连接mysql数据库
+        try {
+            MysqlDataSource mysqlDataSource = new MysqlDataSource();
+            mysqlDataSource.setURL("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false");//本地IP:端口/数据库名
+            mysqlDataSource.setUser("root");//mysql数据库的用户名
+            mysqlDataSource.setPassword("123456");//密码
+            connection = mysqlDataSource.getConnection();
+        } catch (Exception e) {
+            JOptionPane.showMessageDialog(null, "数据库连接失败", "提示", JOptionPane.WARNING_MESSAGE);
+        }
+    }
+    public void readLogin(Login login) {
+        try {
+            String sql = "SELECT * FROM test.User WHERE UserID = ? AND  UserPassword = ?";//查询语句
+            prepare = connection.prepareStatement(sql);//创建执行环境
+            prepare.setString(1, login.getId());
+            prepare.setString(2, login.getPassword());
+            resultSet = prepare.executeQuery();//执行查询语句,如数据匹配成功，则返回true
+            if (resultSet.next()) { //迭代查询
+                login.setLoginSuccess(true);
+                JOptionPane.showMessageDialog(null, "登录成功");
+            } else {
+                    login.setLoginSuccess(false);
+                    if (login.getId().isEmpty() || login.getPassword().isEmpty()) {
+                        if (login.getId().isEmpty()) {
+                            JOptionPane.showMessageDialog(null, "用户名不能为空！", "提示", JOptionPane.WARNING_MESSAGE);
+                        }
+                        if (login.getPassword().isEmpty()){
+                            JOptionPane.showMessageDialog(null, "密码不能为空！","提示", JOptionPane.WARNING_MESSAGE);
+                        }
+                    }else{
+                        JOptionPane.showMessageDialog(null, "用户名不存在！", "警告", JOptionPane.ERROR_MESSAGE);
+                    }
+                }
+                //释放资源和空间
+                connection.close();
+                prepare.close();
+                resultSet.close();
+                loginSuccess = login.isLoginSuccess();
+            } catch (SQLException e) {
+            JOptionPane.showMessageDialog(null, "异常", "警告", JOptionPane.ERROR_MESSAGE);
+        }
+
+    }
+}
+

src/UserLogin-master/UserLogin-master/User/UserRegister.java

@@ -0,0 +1,48 @@
+package com.weh.User;
+
+import com.mysql.cj.jdbc.MysqlDataSource;
+import javax.swing.*;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+//插入数据，以及对数据库驱动的开启
+public class UserRegister {	//注册数据处理者
+    Connection connection = null;
+    PreparedStatement presql;   //预处理对象
+
+    public UserRegister() throws SQLException {
+        try {
+            //连接mysql数据库
+            MysqlDataSource mysqlDataSource = new MysqlDataSource();
+            mysqlDataSource.setURL("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false");
+            mysqlDataSource.setUser("User");
+            mysqlDataSource.setPassword("");
+            connection = mysqlDataSource.getConnection();
+        } catch (SQLException throwables) {
+            JOptionPane.showMessageDialog(null,"数据库连接失败","警告",JOptionPane.WARNING_MESSAGE);
+        }
+    }
+    public void writeRegister(Register register){
+        int flag;
+        try {
+            String sql = "INSERT INTO test.User VALUES (?,?,?)"; //插入语句
+            presql = connection.prepareStatement(sql);
+            presql.setString(1,register.getId());
+            presql.setString(2,register.getPassword());
+            presql.setString(3,register.getName());
+            flag = presql.executeUpdate(); //成功插入式返回1
+            //释放资源和空间
+            connection.close();
+            presql.close();
+            if (flag!=0){
+                JOptionPane.showMessageDialog(null,"注册成功");
+            }else {
+                JOptionPane.showMessageDialog(null,"注册失败","提示",JOptionPane.WARNING_MESSAGE);
+            }
+        } catch (SQLException e) {
+            JOptionPane.showMessageDialog(null,"用户名已存在！","警告",JOptionPane.WARNING_MESSAGE);
+        }
+    }
+}
+

src/UserLogin-master/UserLogin-master/UserLogin-master.iml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="com.weh" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/libs/mysql-connector-j-8.0.31.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/.idea/.gitignore

@@ -0,0 +1,3 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/.idea/libraries/jdbc.xml

@@ -0,0 +1,9 @@
+<component name="libraryTable">
+  <library name="jdbc">
+    <CLASSES>
+      <root url="jar://D:/Java/mysql-connector-j-8.0.31/mysql-connector-j-8.0.31/mysql-connector-j-8.0.31.jar!/com/mysql/jdbc" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="18" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/UserLogin-master.iml" filepath="$PROJECT_DIR$/UserLogin-master.iml" />
+    </modules>
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/README.md

@@ -0,0 +1,2 @@
+Java--用户登录界面（连接Mysql数据库）
+![输入图片说明](https://images.gitee.com/uploads/images/2022/0413/184214_a8326845_9840785.png "未标题-1.png")

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/User/.idea/.gitignore

@@ -0,0 +1,3 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/User/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_18" project-jdk-name="18" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/User/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/User.iml" filepath="$PROJECT_DIR$/User.iml" />
+    </modules>
+  </component>
+</project>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/User/User.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="com.weh.User" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/UserLogin-master/UserLogin-master/out/production/UserLogin-master/com/weh/UserLogin-master.iml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="com.weh" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/libs/mysql-connector-j-8.0.31.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>