Java图形化编程之JFrame疫苗接种系统详解

package com.jiefan;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPassWordField;
import javax.swing.JTextField;
import com.jiefan.jframe.VaccineJframe;
public class Application extends JFrame {
	
	private static final long serialVersionUID = 1L;
	private JTextField username;//文本框
	private JPasswordField password;//密码框
	private JLabel label0;//标题
	private JLabel label1;//用户名
	private JLabel label2;//密码
	private JButton loginButton;//登陆按钮
	private JButton cancelButton;//取消按钮
	
	public Application() {
		// 设置容器为空布局，绝对定位
		this.setLayout(null);
		// 创建标题字体对象
		Font font = new Font("微软雅黑", Font.BOLD, 25);
		// 创建颜色对象
		Color color = new Color(128, 200, 128);
		// 登陆界面标签
		label0 = new JLabel("登陆界面");
		label0.setBounds(200, 50, 150, 50);
		label0.setFont(font);
		label0.setForeground(color);
		// 用户名标签
		label1 = new JLabel("用户名：");
		label1.setBounds(110, 110, 100, 20);
		// 密码标签
		label2 = new JLabel("密码：");
		label2.setBounds(110, 160, 100, 20);
		// 创建组件
		username = new JTextField();
		username.setBounds(180, 110, 200, 20);
		// 密码框
		password = new JPasswordField();
		password.setBounds(180, 160, 200, 20);
		//登陆按钮
		loginButton = new JButton("登陆");
		loginButton.setBounds(205, 200, 60, 20);	
		loginButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerfORMed(ActionEvent e) {
				if(username.getText().equals("admin") && String.valueOf(password.getPassword()).equals("123456")) {
					JOptionPane.showMessageDialog(null, "登陆成功");  
					//跳转到查看所有的疫苗界面（隐藏当前窗体）
					Application.this.setVisible(false);//隐藏当前窗体
					new VaccineJframe();
				}else {
					JOptionPane.showMessageDialog(null, "账号密码错误-默认账号admin密码123456");  
				}
			}
		});
		//取消按钮
		cancelButton = new JButton("取消");
		cancelButton.setBounds(265, 200, 60, 20);
		cancelButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				username.setText("");
				password.setText("");
			}
		});
		// 将组件加入到容器中
		this.add(username);
		this.add(password);
		this.add(label0);
		this.add(label1);
		this.add(label2);
		this.add(loginButton);
		this.add(cancelButton);
		// 设置标题
		this.setTitle("疫苗管理系统");
		// 设置窗口的关闭策略
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		// 设置窗口大小
		this.setSize(500, 300);
		// 隐藏标题栏
		this.setUndecorated(false);
		// 设置不可调整窗口大小
		this.setResizable(true);
		// 设置窗口居中，放在窗口大小后面，null表示桌面
		this.setLocationRelativeTo(null);
		// 将窗口设置为显示,要写在最后一句
		this.setVisible(true);
	}
	public static void main(String[] args) {
		new Application();
	}
}

//查询所有的
	public List<Vaccine> getAll(){
		try {
			List<Vaccine> vs=read.getList();//read是我自己封装的工具类
			return vs;
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	public List<Vaccine> getList() throws IOException{
		List<Vaccine> vaccines=new ArrayList<Vaccine>();
		FileReader fr = new FileReader(Config.filePath);
		BufferedReader br = new BufferedReader(fr);
		String line = br.readLine();
		for (int i = 0; line != null; i++) {
			line = br.readLine();
			String[] lineArr = null;
			if (line != null) {
				lineArr = line.split(" ");
				Vaccine v=new Vaccine();
				v.setId(Integer.valueOf(lineArr[0]));
				v.setVname(lineArr[1]);
				v.setUname(lineArr[2]);
				v.setVdate(lineArr[3]);
				v.setPhone(lineArr[4]);
				v.setUnit(lineArr[5]);
				vaccines.add(v);
			}
		}
		br.close();
		fr.close();
		return vaccines;
	}

//增
	public void addV(Vaccine v) {
		List<Vaccine> vs=getAll();
		if(v.getId() ==null) {
			if(vs!=null&&vs.size()>0)v.setId(vs.get(vs.size()-1).getId()+1); 
			else v.setId(1); 
		}
		write.appendV(v);//write是我自己定义的一个工具类-专门在最后一条记录追加
	}

	public void appendV(Vaccine v) {
		BufferedWriter out=null;
		//最后追加一行
		try {
		out=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(Config.filePath, true)));
		
			out.write("\r\n"+v.getId()+" "+v.getVname()+" "+v.getUname()+" "+v.getVdate()+" "+v.getPhone()+" "+v.getUnit());
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			try {
				out.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}