Java编写地简单图书管理系统的.docx
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Java编写地简单图书管理系统的
Java编写的简单图书管理系统
主界面
代码实现
packageLibrary;
importjava.awt.BorderLayout;
importjava.awt.Color;
importjava.awt.Container;
importjava.awt.event.ActionEvent;
importjava.awt.event.ActionListener;
importjava.sql.Connection;
importjava.sql.DriverManager;
importjava.sql.ResultSet;
importjava.sql.SQLException;
importjava.sql.Statement;
importjavax.swing.ImageIcon;
importjavax.swing.JButton;
importjavax.swing.JFrame;
importjavax.swing.JLabel;
importjavax.swing.JOptionPane;
importjavax.swing.JPanel;
importjavax.swing.JPasswordField;
importjavax.swing.JTextField;
publicclassLoginextendsJFrame{
privatestaticfinallongserialVersionUID=1L;
privateJLabeljlUsername;
privateJLabeljlPwd;
privateJTextFieldtxtUsername;//用户名
privateJTextFieldtxtPassword;//密码
privateJButtonjbOk;
privateJButtonjbCancel;
publicJLabelgetJlUsername(){
if(jlUsername==null)
{
jlUsername=newJLabel("账号");
jlUsername.setForeground(Color.BLACK);
jlUsername.setBounds(118,40,85,30);
}
returnjlUsername;
}
publicJLabelgetJlPwd(){
if(jlPwd==null)
{
jlPwd=newJLabel("密码");
jlPwd.setForeground(Color.BLACK);
jlPwd.setBounds(118,100,85,30);
}
returnjlPwd;
}
publicJTextFieldgetTxtUsername(){
if(txtUsername==null)
{
txtUsername=newJTextField(20);
txtUsername.setBounds(180,40,200,30);
}
returntxtUsername;
}
publicJTextFieldgetTxtPassword(){
if(txtPassword==null)
{
txtPassword=newJPasswordField(20);
txtPassword.setBounds(180,100,200,30);
}
returntxtPassword;
}
publicJButtongetJbOk(){
if(jbOk==null)
{
jbOk=newJButton("登陆");
jbOk.setBounds(150,180,90,30);
//jbOk.addActionListener(this);
}
returnjbOk;
}
publicJButtongetJbCancel(){
if(jbCancel==null)
{
jbCancel=newJButton("取消");
jbCancel.setBounds(300,180,90,30);
}
returnjbCancel;
}
publicLogin(Stringtitle)
{
super(title);
//JFrameframe=newJFrame();
Containercantainer=this.getContentPane();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIconimg=newImageIcon("F:
\\Java\\传习\\src\\Library\\ZF`XY`H48I_}U)C4~}M2~C4.jpg");//这是背景图片
JLabelimgLabel=newJLabel(img);//将背景图放在标签里。
this.getLayeredPane().add(imgLabel,newInteger(Integer.MIN_VALUE));//注意这里是关键,将背景标签添加到jfram的LayeredPane面板里。
imgLabel.setBounds(0,0,img.getIconWidth(),img.getIconHeight());//设置背景标签的位置
cantainer.setLayout(newBorderLayout());
imgLabel.setLayout(null);
imgLabel.add(getJlUsername());
imgLabel.add(getTxtUsername());
imgLabel.add(getJlPwd());
imgLabel.add(getTxtPassword());
imgLabel.add(getJbOk());
imgLabel.add(getJbCancel());
cantainer.add(imgLabel,BorderLayout.NORTH);
((JPanel)cantainer).setOpaque(false);//注意这里,将内容面板设为透明。
这样LayeredPane面板中的背景才能显示出来。
this.setSize(img.getIconWidth(),img.getIconHeight());
myEvent();
this.setVisible(true);
this.setResizable(true);
}
privatevoidmyEvent(){
jbCancel.addActionListener(newActionListener()
{
publicvoidactionPerformed(ActionEvente)
{
Login.this.dispose();
}
});
jbOk.addActionListener(newActionListener()
{
publicvoidactionPerformed(ActionEvente)
{
Connectionconn=null;
Statementstm=null;
ResultSetst=null;
try
{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:
mysql:
//localhost:
3306/library","sa","123456");
stm=conn.createStatement();
Stringsql="select*fromuser";
//Stringsql1="selectpswfromuser";
st=stm.executeQuery(sql);
//st1=stm.executeQuery(sql1);
if(st.next())
{
if(txtUsername.getText().equals(st.getString("id"))&&txtPassword.getText().equals(st.getString("psw")))
{
Login.this.setVisible(false);
newBook("管理界面");
}
else
{
JOptionPane.showMessageDialog(null,"您输入的账号或密码不正确");
getTxtUsername().setText("");
getTxtPassword().setText("");
}
}
else
{
JOptionPane.showMessageDialog(null,"用户名不存在,请重新输入,错误!
");
getTxtUsername().setText("");
getTxtPassword().setText("");
}
}
catch(ClassNotFoundExceptione1)
{
e1.printStackTrace();
}catch(SQLExceptione2){
//TODOAuto-generatedcatchblock
e2.printStackTrace();
}finally{
try{
stm.close();
}catch(Exceptione3){}
//关闭Connection
try{conn.close();}catch(Exceptione4){}
}
}
});
}
publicstaticvoidmain(String[]args)
{
newLogin("图书管理登陆界面");
}
}
管理界面
实现代码
packageLibrary;
importjava.awt.BorderLayout;
importjava.awt.Container;
importjava.awt.event.ActionEvent;
importjava.a