Java编写的简单图书管理系统.doc

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Java编写的简单图书管理系统
主界面

代码实现
package Library;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Login extends JFrame {

private static final long serialVersionUID = 1L;
private JLabel jlUsername;
private JLabel jlPwd;
private JTextField txtUsername; //用户名
private JTextField txtPassword; //密码
private JButton jbOk;
private JButton jbCancel;

public JLabel getJlUsername() {
if(jlUsername==null)
{
jlUsername=new JLabel("账号");
jlUsername.setForeground(Color.BLACK);
jlUsername.setBounds(118, 40, 85, 30);
}
return jlUsername;
}

public JLabel getJlPwd() {
if(jlPwd==null)
{
jlPwd=new JLabel("密码");
jlPwd.setForeground(Color.BLACK);

jlPwd.setBounds(118, 100, 85, 30);
}
return jlPwd;
}

public JTextField getTxtUsername() {
if(txtUsername==null)
{
txtUsername=new JTextField(20);
txtUsername.setBounds(180,40 , 200, 30);
}
return txtUsername;
}

public JTextField getTxtPassword() {
if(txtPassword==null)
{
txtPassword=new JPasswordField(20);
txtPassword.setBounds(180, 100, 200, 30);
}
return txtPassword;
}

public JButton getJbOk() {
if(jbOk==null)
{
jbOk=new JButton("登陆");
jbOk.setBounds(150, 180, 90, 30);
//jbOk.addActionListener(this);

}
return jbOk;
}

public JButton getJbCancel() {
if(jbCancel==null)
{
jbCancel=new JButton("取消");
jbCancel.setBounds(300, 180, 90, 30);
}
return jbCancel;
}

public Login(String title)
{
super(title);
//JFrame frame=new JFrame();
Container cantainer=this.getContentPane();

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIcon img = new ImageIcon("F:\\Java\\传习\\src\\Library\\ZF`XY`H48I_}U)C4~}M2~C4.jpg");//这是背景图片
JLabel imgLabel = new JLabel(img);//将背景图放在标签里。
this.getLayeredPane().add(imgLabel, new Integer(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(new BorderLayout());
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);
}

private void myEvent(){
jbCancel.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
Login.this.dispose();
}
});

jbOk.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
Connection conn=null;
Statement stm=null;
ResultSet st=null;
try
{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/library","sa","123456");
stm=conn.createStatement();
String sql="select * from user";
//String sql1="select psw from user";
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);
new Book("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(ClassNotFoundException e1)
{
e1.printStackTrace();
} catch (SQLException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}finally{
try{
stm.close();
}catch (Exception e3) {}
// 关闭Connection
try { conn.close(); } catch (Exception e4) {}
}
}
});
}

public static void main(String []args)
{
new Login("图书管理登陆界面");
}

}

管理界面

实现代码
package Library;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;

public class Book extends JFrame {

private static final long serialVersionUID = 1L;
private JLabel lblId;
private JLabel lblBname;
private JLabel lblWname;
private JLabel lblCbs;
private JLabel lblnum1;
private JLabel lblnum2;
private JTextField bId; //图书编号
private JTextField bname; //书名
private JTextField wname; //作者名
private JTextField cbs; //出版社
private JTextField num1; //现存量
private JTextField num2; //库存量
private JButton jbDel;
private JTextField jDel;
private JButton jbAdd;
private JButton jbSearch;
private JButton jbUpdate;
private JTable table;
private JLabel jabel;//输入要查找的书号

public JLabel getJabel() {
if(jabel==null)
{
jabel=new JLabel("查删学号");
jabel.setBounds(50, 350, 50, 30);
}
return jabel;
}

public JButton getJbDel() {
if(jbDel==null)
{
jbDel=new JButton("删除");
jbDel.setBounds(180, 400, 60, 30);
}
return jbDel;
}

public JTextField getjDel() {
if(jDel==null)
{
jDel=new JTextField(20);
jDel.setBounds(100, 350, 150, 30);
}
return jDel;
}

public JButton getJbAdd() {
if(jbAdd==null)
{
jbAdd=new JButton("添加");
jbAdd.setBounds(100,400,60,30);
}
return jbAdd;
}

public JButton getJbSearch() {
if(jbSearch==null)
{
jbSearch=new JButton("查找");
jbSearch.setBounds(100, 450, 60, 30);
}
return jbSearch;
}

public JButton getJbUpdate() {
if(jbUpdate==null)
{
jbUpdate=new JButton("修改");
jbUpdate.setBounds(180, 450, 60, 30);
}
return jbUpdate;
}

public JTable getTable() {
if(table==null)
{
table=new JTable(100,6);
table.setBounds(270, 50, 500, 600);
}
return table;
}

public JLabel getLblId() {
if(lblId==null)
{
lblId=new JLabel("编号");
lblId.setBounds(50, 50, 50, 30);
}
return lblId;
}

public JLabel getLblBname() {
if(lblBname==null)
{
lblBname=new JLabel("书名");
lblBname.setBounds(50, 100, 50, 30);
}
return lblBname;
}

public JLabel getLblWname() {
if(lblWname==null)
{
lblWname=new JLabel("作者");
lblWname.setBounds(50,150, 50, 30);
}
return lblWname;
}

public JLabel getLblnum1() {
if(lblnum1==null)
{
lblnum1=new JLabel("现存量");
lblnum1.setBounds(50,200, 50, 30);
}
return lblnum1;
}

public JLabel getLblnum2() {
if(lblnum2==null)
{
lblnum2=new JLabel("库存量");
lblnum2.setBounds(50,250, 50, 30);
}
return lblnum2;
}

public JTextField getbId() {
if(bId==null)
{
bId=new JTextField(20);
bId.setBounds(100, 50,150, 30);
}
return bId;
}

public JTextField getBname() {
if(bname==null)
{
bname=new JTextField(20);
bname.setBounds(100, 100, 150, 30);
}
return bname;
}

public JTextField getWname() {
if(wname==null)
{
wname=new JTextField(20);
wname.setBounds(100, 150, 150, 30);
}
return wname;
}

public JTextField getNum1() {
if(num1==null)
{
num1=new JTextField(20);
num1.setBounds(100, 200, 150, 30);
}
return num1;
}

public JTextField getNum2() {
if(num2==null)
{
num2=new JTextField(20);
num2.setBounds(100, 250, 150, 30);
}
return num2;
}

public JLabel getLblCbs() {
if(lblCbs==null)
{
lblCbs=new JLabel("出版社");
lblCbs.setBounds(50,300, 50, 30);
}
return lblCbs;
}

public JTextField getCbs() {
if(cbs==null)
{
cbs=new JTextField(20);
cbs.setBounds(100, 300, 150, 30);
}
return cbs;
}

public Book(String title)
{
super(title);
//JFrame frame=new JFrame();
Container cantainer=this.getContentPane();

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ImageIcon img = new ImageIcon("F:\\Java\\传习\\src\\Library\\d50735fae6cd7b8961e8eafd0f2442a7d8330ecc[1].jpg");//这是背景图片
JLabel imgLabel = new JLabel(img);//将背景图放在标签里。
this.getLayeredPane().add(imgLabel, new Integer(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(new BorderLayout());
imgLabel.setLayout(null);
imgLabel.add(getLblId());
imgLabel.add(getbId());
imgLabel.add(getLblBname());
imgLabel.add(getBname());
imgLabel.add(getLblWname());
imgLabel.add(getWname());
imgLabel.add(getLblnum1());
imgLabel.add(getNum1());
imgLabel.add(getLblnum2());
imgLabel.add(getNum2());
imgLabel.add(getLblCbs());
imgLabel.add(getCbs());
imgLabel.add(getTable());
imgLabel.add(getJbDel());
imgLabel.add(getjDel());
imgLabel.add(getJbAdd());
imgLabel.add(getJbSearch());
imgLabel.add(getJbUpdate());
imgLabel.add(getJabel());
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);
}

private void myEvent() {
// TODO Auto-generated method stub
jbAdd.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ee)
{
Connection conn=null;
Statement stm=null;
String id1=bId.getText();
String name1=bname.getText();
String name2=wname.getText();
String n1=num1.getText();
String n2=num2.getText();
String chubs=cbs.getText();
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/library","sa","123456");
stm=conn.createStatement();
String sql="insert into book values('"+id1+"','"+name1+"','"+name2+"','"+n1+"','"+n2+"','"+chubs+"')";
stm.executeUpdate(sql);
getbId().setText("");
getBname().setText("");
getWname().setText("");
getNum1().setText("");
getNum2().setText("");
getCbs().setText("");
}catch(ClassNotFoundException e)
{

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally { // 关闭Statement
try { stm.close();
} catch (Exception e) {}
// 关闭Connection
try { conn.close();
} catch (Exception e) {}
}
}
});

jbDel.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ee)
{
String id=jDel.getText();
Connection conn=null;
Statement stm=null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/library","sa","123456");

//String sql="select * from book";
String sql="delete from book where Bid='"+id+"'";
stm=conn.createStatement();
stm.executeUpdate(sql);
getjDel().setText("");
}catch(ClassNotFoundException e)
{

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally { // 关闭Statement
try { stm.close();
} catch (Exception e) {}
// 关闭Connection
try { conn.close();
} catch (Exception e) {}
}
}
});

jbSearch.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ee)
{
String id=jDel.getText();
Connection conn=null;
Statement stm=null;
ResultSet rst=null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/library","sa","123456");

//String sql="select * from book";
String sql="select * from book where Bid='"+id+"'";
stm=conn.createStatement();
rst=stm.executeQuery(sql);
if(rst.next())
{
getbId().setText(rst.getString("Bid"));
getBname().setText(rst.getString("Bname"));
getWname().setText(rst.getString("Wname"));
getNum1().setText(rst.getString("num1"));
getNum2().setText(rst.getString("num2"));
getCbs().setText(rst.getString("chubs"));
getjDel().setText("");
}
}catch(ClassNotFoundException e)
{

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally { // 关闭Statement
try { stm.close();
} catch (Exception e) {}
// 关闭Connection
try { conn.close();
} catch (Exception e) {}
}
}
});

jbUpdate.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ee)
{
String id1=bId.getText();
String name1=bname.getText();
String name2=wname.getText();
String n1=num1.getText();
String n2=num2.getText();
String chubs=cbs.getText();
Connection conn=null;
Statement stm=null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/library","sa","123456");
String sql="update library.book set Bname='"+name1+"',Wname='"+name2+"',num1='"+n1+"',num2='"+n2+"',chubs='"+chubs+"' where Bid='"+id1+"'";
stm=conn.createStatement();
stm.executeUpdate(sql);

}catch(ClassNotFoundException e)
{

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally { // 关闭Statement
try { stm.close();
} catch (Exception e) {}
// 关闭Connection
try { conn.close();
} catch (Exception e) {}
}
}
})