前言

继续对电商购物平台进行改进和升级，加上用户登录及注册页面

（虽然前几次升级好像没发

一个有点小复杂的东西，完成的不是很完善

一、实验内容

完成一个电商购物平台的登录注册窗体，点击“点我注册”，显示注册窗体，用户输入用户信息，点击提交后到达显示用户信息的窗体。窗体如图2所示。

在内容2的基础上，用户点击登录注册窗体的登录按钮，到达商品信息查询的窗体，窗体如图3所示

二、实验思路

和计算器的类似，按照所给的图（需求），写出需要的组件（也就是用户名，密码，登录，注册等按钮），添加窗体所需要的库，按照需求摆好按钮所需要的位置，用监听器将功能部署到按钮上去

让按钮可以实现需要的功能

三、实验代码

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class LoginRegFrame extends JFrame {JLabel l_id,l_role,l_password;JTextField t_id;JComboBox<String> c_roel;//泛型JPasswordField p_password;JButton b_login,b_reset,b_regist;public LoginRegFrame(){setTitle("登录注册页面");setSize(350,300);setLocation(200,150);init();setVisible(true);}public void init() {setLayout(null);l_id = new JLabel("用户名", JLabel.CENTER);l_role = new JLabel("用户类型", JLabel.CENTER);l_password = new JLabel("密码", JLabel.CENTER);t_id = new JTextField();c_roel = new JComboBox<String>();c_roel.addItem("管理员");c_roel.addItem("普通用户");p_password = new JPasswordField();JPanel p = new JPanel();//创建中间容器p.setLayout(new GridLayout(3, 2));//设置面板布局方式p.add(l_id);p.add(t_id);//将组件添加到面板上p.add(l_role);p.add(c_roel);p.add(l_password);p.add(p_password);p.setBounds(5, 5, 320, 190);//设置面板放在窗体的位置及大小add(p);p = new JPanel();b_login = new JButton("登录");b_login.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {new LoginerFrame();}});b_reset = new JButton("重置");b_regist = new JButton("点我注册");b_regist.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {new RegesiterFrame();}});p.setLayout(new GridLayout(1, 3, 5, 5));p.add(b_login);p.add(b_reset);p.add(b_regist);p.setBounds(5, 200, 320, 60);add(p);}
}public class User {private String id,name,password;private char sex;private String city;public User(){super();}public User(String id,String name,String password,char sex,String city){super();this.id=id;this.name=name;this.password=password;this.sex=sex;this.city=city;}public String getId() {return id;}public void setId(String id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public char getSex() {return sex;}public void setSex(char sex) {this.sex = sex;}public String getCity() {return city;}public void setCity(String city) {this.city = city;}@Overridepublic String toString(){return "User[id="+id+",name="+name+",psaaword="+password+",sex="+sex+",city="+city+"]";}
}import entity.User;import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class RegesiterFrame extends JFrame {JLabel l_id,l_name,l_passworld1,l_passworld2,l_sex,l_city;JTextField t_id,t_name;JPasswordField p_passworld1,p_passworld2;//想要保证单选按钮实现单选，需要将这两个按钮放到一个组里ButtonGroup bg;JRadioButton r_boy,r_girl;JComboBox<String> c_city;//泛型化了JButton b_register,b_reset;public RegesiterFrame(){super("电商购物平台注册页面");setSize(300,450);setLocation(700,200);init();setVisible(true);}public void init(){l_id=new JLabel("账号",JLabel.CENTER);l_name=new JLabel("姓名",JLabel.CENTER);l_passworld1=new JLabel("密码",JLabel.CENTER);l_passworld2=new JLabel("确认密码",JLabel.CENTER);l_sex=new JLabel("性别",JLabel.CENTER);l_city=new JLabel("城市",JLabel.CENTER);t_id=new JTextField();t_name=new JTextField();p_passworld1=new JPasswordField();p_passworld2=new JPasswordField();bg=new ButtonGroup();r_boy=new JRadioButton("男");r_girl=new JRadioButton("女");bg.add(r_boy);bg.add(r_girl);c_city=new JComboBox<String>();c_city.addItem("北京");c_city.addItem("上海");c_city.addItem("广州");b_register=new JButton("注册");b_register.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {String id=t_id.getText();String name=t_name.getText();String password=null;String password1=new String(p_passworld1.getPassword());String password2=new String(p_passworld2.getPassword());if(password1.equals(password2)){password=password1;}else{JOptionPane.showMessageDialog(p_passworld1,"两次输入的密码不一致");}char sex;if(r_boy.isSelected()){sex = '男';}else{sex = '女';}String city = (String)c_city.getSelectedItem();User user=new User(id,name,password,sex,city);user.toString();new UserInfoFrame(user);}});b_reset=new JButton("重置");b_reset.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {}});setLayout(new GridLayout(7,2,5,5));add(l_id); add(t_id);add(l_name); add(t_name);add(l_passworld1); add(p_passworld1);add(l_passworld2); add(p_passworld2);add(l_sex);JPanel p=new JPanel();//中间容器p.add(r_boy); p.add(r_girl);add(p);add(l_city); add(c_city);add(b_register); add(b_reset);}
}import entity.User;import javax.swing.*;public class UserInfoFrame extends JFrame{public UserInfoFrame(User user) {super("电商购物平台—用户信息");setSize(400, 300);setLocation(600, 200);init(user);setVisible(true);}public void init(User u) {JTable t;Object[] title = {"用户名", "姓名", "密码", "性别", "城市"};Object[][] users = {{u.getId(), u.getName(), u.getPassword(), u.getSex(), u.getCity()}};t = new JTable(users, title);add(new JScrollPane(t));}
}import javax.swing.*;
import java.awt.*;public class LoginerFrame extends JFrame {private JLabel l_name,l_lei,l_id,l_zuozhe,l_kucun,l_fenlei,l_chaxun,l_buy;private JTextField t_id,t_name,t_zuozhe,t_kucun,t_fenlei;private JComboBox<String> c_lei;private JButton b_chaxun,b_buy;private JTable t_bookmessage;public LoginerFrame(){super("电商购物平台，商品查询页面");setSize(400,100);setLocation(700,600);init();setVisible(true);}public void init(){l_name=new JLabel("您好");l_id=new JLabel("书籍编号",JLabel.CENTER);l_lei=new JLabel("分类:");t_name =new JTextField();t_id=new JTextField();c_lei=new JComboBox<String>();c_lei.addItem("教材");c_lei.addItem("课外书");l_chaxun=new JLabel("查询");b_chaxun=new JButton("查询");l_lei=new JLabel("分类",JLabel.CENTER);l_name=new JLabel("书籍名",JLabel.CENTER);Object[] bookTitle = {"书籍编号","书籍名称","书籍作者","库存","书籍分类"};Object[][] book = {new Object[]{"b00001", "数据结构与算法", "严蔚敏", 30,"软件开发", "算法设计"},{"b00002","java开发语言","李华玲",30,"软件开发","java编程"},{"b00003","数据库概论","蒋本珊",30,"软件开发","数据库设计"},{"b00004","线性代数","高玉斌",30,"基础学科","数学"}};t_bookmessage = new JTable(book,bookTitle);setLayout(null);l_name=new JLabel("购物车商品数：");l_buy=new JLabel("购买");b_buy=new JButton("购买");JPanel p=new JPanel();p.setLayout(new GridLayout(1, 2, 15, 25));p.add(l_name);p.setBounds(5, 30, 670, 20);add(p);JPanel p2=new JPanel();p2.setLayout(new GridLayout(1,2,10,25));p2.add(l_name);p2.add(t_name);p2.add(l_lei);p2.add(c_lei);p2.add(b_chaxun);p2.setBounds(5,50,670,20);add(p2);JPanel p3=new JPanel();p3.setLayout(new GridLayout(1,1,10,25));p3.add(new JScrollPane(t_bookmessage));p3.setBounds(5,100,670,300);add(p3);JPanel p4=new JPanel();p4.setLayout(new GridLayout(30,30,15,25));p4.add(l_name);p4.add(b_buy);p4.setBounds(5,130,670,20);add(p4);}
}public class Test {public static void main(String[] args){LoginRegFrame loginRegFrame=new LoginRegFrame();}
}