实现前的准备，需要配置jdbc，导入jdbc驱动

jdbc驱动包下载地址：

正文开始

本项目模拟真实的超市管理模式，以管理员为面向对象，所要实现的功能是基本的增删改查，具体实现步骤如下：

管理员登录

进入欢迎界面

进入仓库管理界面

管理员进行增删改查

1，定义欢迎界面Welcome.java

本界面 主要针对按钮进行了部分优化并设置了面板的背景显示 用户通过点击“进入系统”按钮进入到“登录界面”

package com.fruit.main;

import java.util.prefs.BackingStoreException;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

public class Welcome extends JFrame{

JButton b;

ImageIcon image;

JLabel label;

public Welcome() {

// TODO Auto-generated constructor stub

this.setTitle("水果超市欢迎您！");

this.setBounds(500, 100, 700, 600);

this.setLayout(null);

image = new ImageIcon("back.jpg");

label = new JLabel(image);

label.setBounds(0, 0, 700, 500);

b = new JButton("进入系统");

b.setBounds(200, 470, 280, 30);

this.add(label);

this.add(b);

this.setVisible(true);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new Welcome();

}

}

2，登录界面

部分代码如下：

Login.java

package com.fruit.main;

import java.awt.Color;

import java.awt.Font;

import java.util.List;

import java.util.Properties;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPasswordField;

import javax.swing.JRadioButton;

import javax.swing.JTextField;

import com.fruit.po.User;

import com.fruit.utils.BaseDao;

public class Login extends JFrame {

JLabel l_username, l_password, l_per;

JTextField t_username;

JPasswordField t_password;

JRadioButton r_per;

JButton b_login, b_reg, b_reset, b_exit;

public Login() {

// TODO Auto-generated constructor stub

this.setTitle("登录");

this.setBounds(500, 100, 700, 600);

this.setLayout(null);

//界面设计

l_username = new JLabel("用户名:");

l_username.setBounds(190, 150, 60, 37);

l_username.setForeground(Color.RED);

t_username = new JTextField();

t_username.setBounds(250, 155, 180, 30);

t_username.setFont(new Font("宋体", Font.PLAIN, 20));

l_password = new JLabel("密 码:");

l_password.setBounds(190, 215, 60, 37);

l_password.setForeground(Color.blue);

t_password = new JPasswordField();

t_password.setBounds(250, 220, 180, 30);

t_password.setFont(new Font("宋体", Font.PLAIN, 20));

l_per = new JLabel("权 限:");

l_per.setBounds(190, 280, 130, 40);

l_per.setForeground(Color.green);

r_per = new JRadioButton("管理员");

r_per.setBounds(255, 290, 100, 20);

r_per.setSelected(true);

b_login = new JButton("登录");

b_login.setBounds(180, 350, 60, 30);

b_reg = new JButton("注册");

b_reg.setBounds(260, 350, 60, 30);

b_reset = new JButton("重置");

b_reset.setBounds(340, 350, 60, 30);

b_exit = new JButton("退出");

b_exit.setBounds(425, 350, 60, 30);

this.add(l_username);

this.add(l_password);

this.add(l_per);

this.add(t_username);

this.add(t_password);

this.add(r_per);

this.add(b_login);

this.add(b_reg);

this.add(b_reset);

this.add(b_exit);

this.setVisible(true);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

//new Login();

new Welcome();

}

}

3，注册界面reg.java

package com.fruit.main;

import java.awt.Color;

import java.awt.Font;

import java.io.FileOutputStream;

import java.util.List;

import java.util.Properties;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JRadioButton;

import javax.swing.JTextField;

import com.fruit.po.User;

import com.fruit.utils.BaseDao;

import com.fruit.utils.PageUtil;

public class Reg extends JFrame{

JLabel l_username, l_password;

JTextField t_username,t_password;

JButton b_login,b_reg,b_reset;

public Reg() {

// TODO Auto-generated constructor stub

this.setTitle("注册");

this.setBounds(500, 100, 700, 600);

this.setLayout(null);

//界面设计

l_username = new JLabel("用户名:");

l_username.setBounds(190, 150, 60, 37);

l_username.setForeground(Color.RED);

t_username=new JTextField();

t_username.setBounds(250, 155,180, 30);

t_username.setFont(new Font("宋体",Font.PLAIN,20));

l_password = new JLabel("密 码:");

l_password.setBounds(190, 215, 60, 37);

l_password.setForeground(Color.blue);

t_password=new JTextField();

t_password.setBounds(250, 220,180, 30);

t_password.setFont(new Font("宋体",Font.PLAIN,20));

b_reg = new JButton("确定注册");

b_reg.setBounds(190, 350, 90, 30);

b_login = new JButton("返回登录");

b_login.setBounds(290, 350, 90, 30);

b_reset = new JButton("重置");

b_reset.setBounds(390, 350, 90, 30);

this.add(l_username);

this.add(l_password);

this.add(t_username);

this.add(t_password);

this.add(b_reg);

this.add(b_login);

this.add(b_reset);

this.setVisible(true);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

//new Reg();

new Welcome();

}

}

4,商店界面Goods.java

package com.fruit.main;

import java.awt.Color;

import java.awt.Font;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextField;

import com.fruit.utils.BaseDao;

public class Goods extends JFrame{

JLabel listTitle,l_id,l_name,l_price,l_unit;

JTable table;

JScrollPane tablePane;//滚动

JTextField j_add_id,j_add_name,j_add_price,j_add_unit

,j_up_id,j_up_name,j_up_price,j_up_unit,j_de_id;

JButton b_add,b_up,b_de,b_exit;

public Goods() {

// TODO Auto-generated constructor stub

this.setTitle("超市货物管理");

this.setBounds(500, 100, 700, 600);

this.getContentPane().setBackground(Color.cyan);

this.setLayout(null);

//标题

listTitle = new JLabel("水果列表");

listTitle.setBounds(280, 15, 100, 20);

listTitle.setFont(new Font("黑体",Font.PLAIN,20));

this.add(listTitle);

//退出登录

b_exit = new JButton("退出登录");

b_exit.setBounds(520, 15, 100, 20);

b_exit.setFont(new Font("宋体",Font.PLAIN,16));

add(b_exit);

//表格

table = new JTable();

tablePane = new JScrollPane();

table.getTableHeader().setReorderingAllowed(false);//列不可移动

table.getTableHeader().setResizingAllowed(false);//不可拉动表格

table.setEnabled(false);//不可更改数据

tablePane.setBounds(30,50,630,270);

tablePane.setViewportView(table);

this.add(tablePane);

//标签

l_id = new JLabel("水果编号");

l_name = new JLabel("水果名称");

l_price = new JLabel("水果单价");

l_unit = new JLabel("计价单位");

l_id.setBounds(30, 330, 100, 30);

l_id.setFont(new Font("宋体",Font.PLAIN,16));

l_name.setBounds(150, 330, 100, 30);

l_name.setFont(new Font("宋体",Font.PLAIN,16));

l_price.setBounds(280, 330, 100, 30);

l_price.setFont(new Font("宋体",Font.PLAIN,16));

l_unit.setBounds(410, 330, 100, 30);

l_unit.setFont(new Font("宋体",Font.PLAIN,16));

this.add(l_id);

this.add(l_name);

this.add(l_price);

this.add(l_unit);

//增加

j_add_id = new JTextField();

j_add_name = new JTextField();

j_add_price = new JTextField();

j_add_unit = new JTextField();

j_add_id.setBounds(30, 360, 80, 30);

j_add_name.setBounds(150, 360, 80, 30);

j_add_price.setBounds(280, 360, 80, 30);

j_add_unit.setBounds(410, 360, 80, 30);

this.add(j_add_id);

this.add(j_add_name);

this.add(j_add_price);

this.add(j_add_unit);

b_add = new JButton("提交");

b_add.setBounds(540, 360, 80, 30);

b_add.setFont(new Font("宋体",Font.PLAIN,16));

this.add(b_add);

//修改

j_up_id = new JTextField();

j_up_name = new JTextField();

j_up_price = new JTextField();

j_up_unit = new JTextField();

j_up_id.setBounds(30, 410, 80, 30);

j_up_name.setBounds(150, 410, 80, 30);

j_up_price.setBounds(280, 410, 80, 30);

j_up_unit.setBounds(410, 410, 80, 30);

this.add(j_up_id);

this.add(j_up_name);

this.add(j_up_price);

this.add(j_up_unit);

b_up = new JButton("改动");

b_up.setBounds(540, 410, 80, 36);

b_up.setFont(new Font("宋体",Font.PLAIN,16));

this.add(b_up);

//删除

j_de_id = new JTextField();

j_de_id.setBounds(30, 460, 80, 36);//510

this.add(j_de_id);

b_de = new JButton("删除");

b_de.setBounds(540, 460, 80, 36);//510

b_de.setFont(new Font("宋体",Font.PLAIN,16));

this.add(b_de);

this.setVisible(true);

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new Goods();

//new Welcome();

}

}