JAVA简单实现用户登录注册

 2019-07-03 19:52:32

              本片代码主要有Java的桌面图形界面，Java I/O流，JDBC等等内容实现用户登录，在此地基础上添加了用户注册。代码相当的简陋，但是简单，容易理解。

 

 

数据库使用Start SampServer实现

 

 

源码：

加载数据库驱动，获取数据库连接

package 包位置

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

 

public class JdbcRe {

 

         static {

          String driverName="com.mysql.jdbc.Driver";

          String url="jdbc:mysql://localhost:3306/abc";

          String name="root";

          String passwd="";

 

         }

         public static void locadClass() throws ClassNotFoundException {

 

                 //加载驱动

                 String driverName="com.mysql.jdbc.Driver";

                 Class.forName(driverName);

                

         }

 

                 public static Connection getConnection() throws Exception {

                         

                         

                           String url="jdbc:mysql://localhost:3306/abc";

                           String name="root";

                           String passwd="";

                           //获得连接

                           Connection conn = DriverManager.getConnection(url, name, passwd);

                          return conn;

                 }

                 public static void result(Connection conn, Statement stam) {

                           

                          if (conn != null) {

          

                                   try {

                                            conn.close();

                                   } catch (SQLException e) {

                                            // TODO Auto-generated catch block

                                            e.printStackTrace();

                                   }

                                   conn = null;

                          }

          

                          if (stam != null) {

          

                                   try {

                                            stam.close();

                                   } catch (SQLException e) {

                                            // TODO Auto-generated catch block

                                            e.printStackTrace();

                                   }

                                   stam = null;

                          }

                 }

 

}

 

注册代码

package 包位置

 

import java.awt.Component;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.Statement;

 

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JRadioButton;

import javax.swing.JTextArea;

import javax.swing.JTextField;

import javax.swing.SwingConstants;

 

 

 

public class Register extends JFrame implements ActionListener{

         JPanel p1,p2,p3,p4,p5,p6,p7,p8;

         JLabel l1,l2,l3,l4,l5,l6,l7,l8;

         JTextField j1,j4,j5,j6,j7;

         JPasswordField j2,j3;

         JRadioButton r1,r2;

         JCheckBox ck1,ck2,ck3,ck4;

         JTextArea adddr;

         JComboBox degree;

         JButton bu1,bu2;

         Connection conn;

    Statement stam;

        

        

         public Register() {

                 super("用户注册");

                 this.setLayout(new GridLayout(8,1));

                 p1 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l1 =new JLabel("用户名：");

                 j1=new JTextField(18);

                 p1.add(l1);

                 p1.add(j1);

                 this.add(p1);

                

                 p2 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l2 =new JLabel("密码：");

                 j2=new JPasswordField(19);

                 p2.add(l2);

                 p2.add(j2);

                 this.add(p2);

                

                 p3 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l3 =new JLabel("确认密码：");

                 j3=new JPasswordField(16);

                 p3.add(l3);

                 p3.add(j3);

                 this.add(p3);

                

                 p4 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l4 =new JLabel("确性别：");

                 r1=new JRadioButton("男");

                 r2=new JRadioButton("女");

                 this.r1.setSelected(true);

                 p4.add(l4);

                 p4.add(r1);

                 p4.add(r2);

                 this.add(p4);

                

                 p5 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l5 =new JLabel("爱好：");

                 ck1=new JCheckBox("阅读");

                 ck2=new JCheckBox("上网");

                 ck3=new JCheckBox("游泳");

                 ck4=new JCheckBox("旅游");

                 p5.add(l5);

                 p5.add(ck1);

                 p5.add(ck2);

                 p5.add(ck3);

                 p5.add(ck4);

                 this.add(p5);

                

                

                 p6 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l6 =new JLabel("地址：");

                 adddr =new JTextArea(2,19);

                 p6.add(l6);

                 p6.add(adddr);

                 this.add(p6);

                

                 p7 =new JPanel(new FlowLayout(FlowLayout.LEFT));

                 l7 =new JLabel("学历：");

                 String str[]= {"小学","初中","高中","大学"};

                 degree=new JComboBox(str);

                 p7.add(l7);

                 p7.add(degree);

                 this.add(p7);

                

                 p8 =new JPanel(new FlowLayout(FlowLayout.CENTER));

                 bu1=new JButton("注册");

                

                 bu2=new JButton("取消");

                

                 p8.add(bu1);

                 p8.add(bu2);

                 this.add(p8);

                

                 //创建监听

                 awtEvent();

                

         }

 

         public static void main(String[] args) {

                 Register r=new Register();

                 r.setVisible(true);

                 r.setSize(300, 400);

                 r.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

         }

         //监听

    private void awtEvent() {

            //单选框互斥

        r1.addActionListener(new ActionListener() {

                         

                          @Override

                          public void actionPerformed(ActionEvent e) {

                                   // TODO Auto-generated method stub

                                   if(r1.isSelected()){

                                            r2.setSelected(false);

                                   }

                          }

                 });

        r2.addActionListener(new ActionListener() { <