实验目的：掌握数据库编程技术。能正确连接数据库，能对数据库中信息进行查询、插入、删除、修改。

实验内容：在数据库中创建一张书目信息表，包括书名、作者、出版社、出版日期、书号、价格字段。设计一个GUI界面进行书目管理。在该界面上有四个选项卡，分别是查询、插入、删除、修改。点击查询选项卡，出现的界面上有书名、作者、出版社、书号四个文本框，一个按钮和一个只读文本区。文本框内容可以为空，输入相应的查询信息后（例如根据书名查询可以仅输入书名），点击界面上的“查询”按钮，可以在界面下方的文本区中显示出符合条件的书目详细信息。点击插入选项卡，出现的界面上有书名、作者、出版社、出版日期、书号、价格文本框，一个按钮。在文本框中输入信息后，点击“插入”按钮，该书目信息插入数据库表中。点击删除选项卡，出现的界面上有书名文本框和一个按钮，输入书名后点击“删除”按钮，该书目信息从数据库表中删除。点击修改选项卡，出现的界面上有书名、作者、出版社、出版日期、书号、价格文本框，一个按钮。输入的书名必须是已存在的，否则会弹出消息框显示出错信息。输入信息后，点击“修改”按钮，数据库表中的相应书目信息被修改为新值。

实验源码：

BookInfo.java

<strong>/</strong>* * 项目名称:图书管理系统 * 版本:    1.0 * 创建者:  张俊强 * 创建时间:2016/5/26 * */package librarySystem;import java.awt.*;import javax.swing.*;import java.awt.event.*;import java.sql.*;@SuppressWarnings("serial")public class BookInfo extends JFrame implements ActionListener{ //主角面上的控件 private JLabel inputLabel; private JTextField inputText; private JButton searchBut; private JTable bookTable; private JScrollPane bookScroll; private JButton addBut; private JButton modifyBut; private JButton deleteBut; private JButton refreshBut; private BookTableModel bookTableModel; public static void main(String[] args) throws SQLException {  // TODO Auto-generated method stub  BookInfo bookInfo=new BookInfo();  bookInfo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  bookInfo.setBounds(350, 150, 600, 400);  bookInfo.setVisible(true);//  bookInfo.importSQL();//导出数据  bookInfo.setMinWindowLayout();//设置数据 } public BookInfo() throws SQLException{  //创建主界面上的控件  inputLabel=new JLabel("请输入书名:");  inputText=new JTextField(10);  searchBut=new JButton("查询");  bookTableModel=new BookTableModel();    bookTable=new JTable(bookTableModel);  bookScroll=new JScrollPane(bookTable);    addBut=new JButton("添加");  modifyBut=new JButton("修改");  deleteBut=new JButton("删除");  refreshBut=new JButton("刷新");  searchBut.addActionListener(this);  addBut.addActionListener(this);  refreshBut.addActionListener(this);  modifyBut.addActionListener(this);  deleteBut.addActionListener(this); } void setMinWindowLayout(){  //主界面布局  Container con1=new Container();  con1.setLayout(new FlowLayout());  con1.add(inputLabel);  con1.add(inputText);  con1.add(searchBut);  con1.add(refreshBut);  Container con2=new Container();  con2.setLayout(new FlowLayout());  con2.add(addBut);  con2.add(modifyBut);  con2.add(deleteBut);  this.setLayout(new BorderLayout());  this.add(con1,BorderLayout.NORTH);  this.add(bookScroll,BorderLayout.CENTER);  this.add(con2,BorderLayout.SOUTH);  this.validate(); } @Override public void actionPerformed(ActionEvent e) {  // TODO Auto-generated method stub  if(e.getSource()==searchBut){   if(!this.inputText.getText().equals("")){      String bookName=this.inputText.getText();      String sql="SELECT * FROM book_info WHERE book_name ='"+bookName+"'";      try {       bookTableModel=new BookTableModel(sql);    bookTable.setModel(bookTableModel);   } catch (SQLException e1) {    // TODO Auto-generated catch block    e1.printStackTrace();   }         }else{    JOptionPane.showMessageDialog(this,"输入不能为空", "提示",JOptionPane.PLAIN_MESSAGE);   }  }  else if(e.getSource()==addBut){   @SuppressWarnings("unused")   AddBookDialog addWin=new AddBookDialog(this,"添加图书",true);   this.refreshTable();  }  else if(e.getSource()==refreshBut){   this.refreshTable();  }  else if(e.getSource()==deleteBut){   int rowNum=bookTable.getSelectedRow();   if(rowNum<0||rowNum>bookTable.getRowCount()){        JOptionPane.showMessageDialog(this,"未选中", "提示",JOptionPane.PLAIN_MESSAGE);   }   else{    //System.out.print(bookName);    int n = JOptionPane.showConfirmDialog(null, "确认删除吗?", "确认删除框", JOptionPane.YES_NO_OPTION);    if (n == JOptionPane.YES_OPTION) {     String bookNum=(String) bookTable.getValueAt(rowNum, 0);     String sql="DELETE FROM book_info WHERE book_num= '"+bookNum+"'";     bookTableModel.deleteBook(sql);     this.refreshTable();     JOptionPane.showMessageDialog(this,"删除成功", "提示",JOptionPane.PLAIN_MESSAGE);    } else if (n == JOptionPane.NO_OPTION) {     return;    }   }  }  else if(e.getSource()==modifyBut){   bookTable.setModel(bookTableModel);   int rowNum=bookTable.getSelectedRow();   if(rowNum<0||rowNum>bookTable.getRowCount()){        JOptionPane.showMessageDialog(this,"未选中", "提示",JOptionPane.PLAIN_MESSAGE);   }   else{    @SuppressWarnings("unused")    ModifyBook modifyWin=new ModifyBook(this,"修改信息",true,bookTableModel,rowNum);       this.refreshTable();   }  }   } public void refreshTable(){  BookTableModel searchBook;  try {   searchBook = new BookTableModel("SELECT * FROM book_info");   bookTable.setModel(searchBook);   bookTableModel=searchBook;  } catch (SQLException e1) {   // TODO Auto-generated catch block   e1.printStackTrace();  } }}

BookTableModel.java

package librarySystem;import java.sql.*;import java.util.*;/* * 图书表模型 * */import javax.swing.table.*;@SuppressWarnings("serial")public class BookTableModel extends AbstractTableModel{ //表的元素 private Vector<Vector<String>> rowData; private Vector<String> colName;    // 数据库    private PreparedStatement stmt;    private ResultSet result; public BookTableModel(String sql) throws SQLException{  this.initData(sql); } public BookTableModel() throws SQLException{  this.initData("SELECT * FROM book_info"); } public void initData(String sql) throws SQLException{  setRowData(new Vector<Vector<String>>());  setColName(new Vector<String>());  getColName().add("书号");  getColName().add("书名");  getColName().add("作者");  getColName().add("出版社");  getColName().add("出版时间");  getColName().add("价格");  /*   * 数据库的导入   * */  try {   Class.forName("com.mysql.jdbc.Driver");  } catch (ClassNotFoundException e) {   // TODO Auto-generated catch block   e.printStackTrace();  }  String url= "jdbc:mysql://localhost:3306/device";  String user="root";  String password="123456";  Connection con=DriverManager.getConnection(url,user,password);     stmt = con.prepareStatement(sql);     result=stmt.executeQuery();     importSQL(); } void importSQL() throws SQLException{  // TODO Auto-generated method stub  @SuppressWarnings("unused")  boolean signNull=true;  while(result.next()){   Vector<String> item=new Vector<String>();   for(int i=1;i<7;i++){    item.add(result.getString(i));   }   getRowData().add(item);   signNull=false;  }  result.close(); } @Override public int getColumnCount() {//得到列数  // TODO Auto-generated method stub  return this.colName.size(); } @Override public int getRowCount() {//得到行数  // TODO Auto-generated method stub  return this.rowData.size(); } @Override public Object getValueAt(int row, int col) {//得到某行某列的数据  // TODO Auto-generated method stub  return (this.rowData.get(row)).get(col); } @Override public String getColumnName(int column) {  // TODO Auto-generated method stub  return this.colName.get(column); }  public Vector<Vector<String>> getRowData() {  return rowData; } public void setRowData(Vector<Vector<String>> rowData) {  this.rowData = rowData; } public Vector<String> getColName() {  return colName; } public void setColName(Vector<String> colName) {  this.colName = colName; } public void addBook(String sql){  try {   stmt.executeUpdate(sql);  } catch (SQLException e) {   // TODO Auto-generated catch block   e.printStackTrace();  }//  initData("SELECT * FROM book_info"); } public void deleteBook(String sql){  try {   stmt.executeUpdate(sql);  } catch (SQLException e1) {   // TODO Auto-generated catch block   e1.printStackTrace();  } }}

AddBookDialog.java

package librarySystem;import java.awt.*;import java.awt.event.*;import java.sql.SQLException;import javax.swing.*;@SuppressWarnings("serial")public class AddBookDialog extends JDialog implements ActionListener{ private JLabel bookNumLabel; private JLabel bookNameLabel; private JLabel bookWriterLabel; private JLabel bookPublishLabel; private JLabel bookPriceLabel; private JLabel bookTimeLabel; private JTextField bookNumText; private JTextField bookNameText; private JTextField bookWriterText; private JTextField bookPublishText; private JTextField bookPriceText; private JTextField bookTimeText;  private JButton submitBut; private JButton cancelBut; public AddBookDialog(Frame owner,String title,boolean model){  //父窗口,窗口名,是否是模式窗口  super(owner,title,model);  bookNumLabel=new JLabel("书    号:");  bookNameLabel=new JLabel("书    名:");  bookWriterLabel=new JLabel("作    者:");  bookPublishLabel=new JLabel("出版社:");  bookPriceLabel=new JLabel("价    格:");  bookTimeLabel=new JLabel("出版时间:");    bookNumText=new JTextField(10);  bookNameText=new JTextField(10);  bookWriterText=new JTextField(10);  bookPublishText=new JTextField(10);  bookPriceText=new JTextField(10);  bookTimeText=new JTextField(9);    submitBut=new JButton("确认");  cancelBut=new JButton("取消");  submitBut.addActionListener(this);  cancelBut.addActionListener(this);  this.setBounds(350,150,400,260);  this.setResizable(false);  this.setLayout(new BorderLayout());  initLayout(); } public void initLayout(){  Container[] con1=new Container[6];  for(int i=0;i<6;i++) con1[i]=new Container();  con1[0].setLayout(new FlowLayout());  con1[0].add(bookNumLabel);  con1[0].add(bookNumText);    con1[1].setLayout(new FlowLayout());  con1[1].add(bookNameLabel);  con1[1].add(bookNameText);    con1[2].setLayout(new FlowLayout());  con1[2].add(bookWriterLabel);  con1[2].add(bookWriterText);    con1[3].setLayout(new FlowLayout());  con1[3].add(bookPublishLabel);  con1[3].add(bookPublishText);    con1[4].setLayout(new FlowLayout());  con1[4].add(bookPriceLabel);  con1[4].add(bookPriceText);    con1[5].setLayout(new FlowLayout());  con1[5].add(bookTimeLabel);  con1[5].add(bookTimeText);    Container con2=new Container();  con2.setLayout(new BorderLayout());  con2.add(con1[0],BorderLayout.NORTH);  con2.add(con1[1],BorderLayout.CENTER);  con2.add(con1[2],BorderLayout.SOUTH);    Container con3=new Container();  con3.setLayout(new BorderLayout());  con3.add(con1[3],BorderLayout.NORTH);  con3.add(con1[4],BorderLayout.CENTER);  con3.add(con1[5],BorderLayout.SOUTH);    Container con4=new Container();  con4.setLayout(new FlowLayout());  con4.add(submitBut);  con4.add(cancelBut);  Container con5=new Container();  con5.setLayout(new BorderLayout());  con5.add(con2,BorderLayout.NORTH);  con5.add(con3,BorderLayout.CENTER);  con5.add(con4,BorderLayout.SOUTH);    this.add(con5,BorderLayout.CENTER);  this.validate();  this.setVisible(true); } @Override public void actionPerformed(ActionEvent e) {  // TODO Auto-generated method stub  if(e.getSource()==submitBut){   if(bookNumText.getText().equals("")||bookNameText.getText().equals("")||     bookWriterText.getText().equals("")||bookPublishText.getText().equals("")||     bookPriceText.getText().equals("")||bookTimeText.getText().equals("")){    //System.out.println("输入失败");       JOptionPane.showMessageDialog(this,"输入不能有空", "提示",JOptionPane.PLAIN_MESSAGE);   }   else{    //System.out.println("输入成功");    String sql="insert into "      + "book_info(book_num,book_name,book_writer,publish_house,book_price,publish_time)"      + "values('"+bookNumText.getText()+"','"+bookNameText.getText()+"','"+bookWriterText.getText()+"','"+bookPublishText.getText()+"','"+bookPriceText.getText()+"','"+bookTimeText.getText()+"')";    try {     BookTableModel book=new BookTableModel();     book.addBook(sql);    } catch (SQLException e1) {     // TODO Auto-generated catch block     e1.printStackTrace();    }    JOptionPane.showMessageDialog(this,"添加成功", "提示",JOptionPane.PLAIN_MESSAGE);       this.setVisible(false);   }  }  if(e.getSource()==cancelBut){   this.setVisible(false);  } }}

ModifyBook.java

package librarySystem;import java.awt.*;import java.awt.event.*;import java.sql.SQLException;import javax.swing.*;@SuppressWarnings("serial")public class ModifyBook extends JDialog implements ActionListener{ private JLabel bookNumLabel; private JLabel bookNameLabel; private JLabel bookWriterLabel; private JLabel bookPublishLabel; private JLabel bookPriceLabel; private JLabel bookTimeLabel; private JTextField bookNumText; private JTextField bookNameText; private JTextField bookWriterText; private JTextField bookPublishText; private JTextField bookPriceText; private JTextField bookTimeText; private JButton submitBut; private JButton cancelBut; private BookTableModel bookModel; private int rowNum; public ModifyBook(Frame owner,String title,boolean type,BookTableModel model,int row){  super(owner,title,type);  bookModel=model;  rowNum=row;  bookNumLabel=new JLabel("书    号:");  bookNameLabel=new JLabel("书    名:");  bookWriterLabel=new JLabel("作    者:");  bookPublishLabel=new JLabel("出版社:");  bookPriceLabel=new JLabel("价    格:");  bookTimeLabel=new JLabel("出版时间:");    bookNumText=new JTextField(10);  bookNameText=new JTextField(10);  bookWriterText=new JTextField(10);  bookPublishText=new JTextField(10);  bookPriceText=new JTextField(10);  bookTimeText=new JTextField(9);    submitBut=new JButton("确认修改");  cancelBut=new JButton("取消");  submitBut.addActionListener(this);  cancelBut.addActionListener(this);  this.setBounds(350,150,400,260);  this.setResizable(false);  this.setLayout(new BorderLayout());  this.setValue();  this.initLayout();   } public void initLayout(){  Container[] con1=new Container[6];  for(int i=0;i<6;i++) con1[i]=new Container();  con1[0].setLayout(new FlowLayout());  con1[0].add(bookNumLabel);  con1[0].add(bookNumText);    con1[1].setLayout(new FlowLayout());  con1[1].add(bookNameLabel);  con1[1].add(bookNameText);    con1[2].setLayout(new FlowLayout());  con1[2].add(bookWriterLabel);  con1[2].add(bookWriterText);    con1[3].setLayout(new FlowLayout());  con1[3].add(bookPublishLabel);  con1[3].add(bookPublishText);    con1[4].setLayout(new FlowLayout());  con1[4].add(bookPriceLabel);  con1[4].add(bookPriceText);    con1[5].setLayout(new FlowLayout());  con1[5].add(bookTimeLabel);  con1[5].add(bookTimeText);    Container con2=new Container();  con2.setLayout(new BorderLayout());  con2.add(con1[0],BorderLayout.NORTH);  con2.add(con1[1],BorderLayout.CENTER);  con2.add(con1[2],BorderLayout.SOUTH);    Container con3=new Container();  con3.setLayout(new BorderLayout());  con3.add(con1[3],BorderLayout.NORTH);  con3.add(con1[4],BorderLayout.CENTER);  con3.add(con1[5],BorderLayout.SOUTH);    Container con4=new Container();  con4.setLayout(new FlowLayout());  con4.add(submitBut);  con4.add(cancelBut);  Container con5=new Container();  con5.setLayout(new BorderLayout());  con5.add(con2,BorderLayout.NORTH);  con5.add(con3,BorderLayout.CENTER);  con5.add(con4,BorderLayout.SOUTH);  this.add(con5,BorderLayout.CENTER);  this.validate();  this.setVisible(true); } public void setValue(){  this.bookNumText.setText((String) bookModel.getValueAt(rowNum, 0));  this.bookNumText.setEditable(false);    this.bookNameText.setText((String) bookModel.getValueAt(rowNum, 1));  this.bookWriterText.setText((String) bookModel.getValueAt(rowNum, 2));  this.bookPublishText.setText((String) bookModel.getValueAt(rowNum, 3));  this.bookTimeText.setText((String) bookModel.getValueAt(rowNum, 4));  this.bookPriceText.setText((String) bookModel.getValueAt(rowNum, 5));  this.validate(); } @Override public void actionPerformed(ActionEvent e) { // System.out.println(bookPriceText.getText());  // TODO Auto-generated method stub  if(e.getSource()==submitBut){   if(bookNumText.getText().equals("")||bookNameText.getText().equals("")||     bookWriterText.getText().equals("")||bookPublishText.getText().equals("")||     bookPriceText.getText().equals("")||bookTimeText.getText().equals("")){    //System.out.println("输入失败");       JOptionPane.showMessageDialog(this,"修改不能有空", "提示",JOptionPane.PLAIN_MESSAGE);   }   else{    int n = JOptionPane.showConfirmDialog(null, "确认修改吗?", "确认修改框", JOptionPane.YES_NO_OPTION);    if (n == JOptionPane.YES_OPTION) {     String sql="UPDATE book_info SET book_name ='"+bookNameText.getText()+"', book_writer= '"+bookWriterText.getText()+"',publish_house='"+bookPublishText.getText()+"',book_price='"+bookPriceText.getText()+"',publish_time='"+bookTimeText.getText()+"' WHERE book_num = '"+bookNumText.getText()+"' ";     try {      BookTableModel book=new BookTableModel();      book.addBook(sql);     } catch (SQLException e1) {      // TODO Auto-generated catch block      e1.printStackTrace();     }     JOptionPane.showMessageDialog(this,"修改成功", "提示",JOptionPane.PLAIN_MESSAGE);        this.setVisible(false);    } else if (n == JOptionPane.NO_OPTION) {     return;    }   }  }  if(e.getSource()==cancelBut){   this.setVisible(false);  } } }

程序运行结果：
主界面：

查询界面：

添加图书界面：

修改界面：

删除操作：

数据库界面：