www.pudn.com > sjkjjwsu.store.rar > ReturnInfo.java

import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import java.sql.*; 
public class ReturnInfo extends JFrame implements ActionListener 
{ 
	DataBaseManager db=new DataBaseManager(); 
	ResultSet rs; 
	JPanel panel1,panel2; 
	Container c; 
	JLabel TipLabel=new JLabel("输入还书者姓名和书名点击确定，将调出此书的相关信息"); 
	JLabel ReturnedBookStudentLabel,ReturnedBookNameLabel, 
	       ReturnedDateLabel,ReturnedCommentLabel; 
	JTextField ReturnedBookStudentTextField,ReturnedBookNameTextField, 
	           ReturnedDateTextField,ReturnedCommentTextField; 
	JButton ClearBtn,YesBtn,UpdateBtn,CancelBtn; 
	public ReturnInfo() 
	{ 
		super("修改书籍还入信息"); 
		c=getContentPane(); 
		c.setLayout(new BorderLayout()); 
		c.add(TipLabel,BorderLayout.NORTH); 
		ReturnedBookStudentLabel=new JLabel("还书者姓名",JLabel.CENTER); 
		ReturnedBookNameLabel=new JLabel("书名",JLabel.CENTER); 
		ReturnedDateLabel=new JLabel("还书日期",JLabel.CENTER); 
		ReturnedCommentLabel=new JLabel("备注",JLabel.CENTER); 
		ReturnedBookStudentTextField=new JTextField(15); 
		ReturnedBookNameTextField=new JTextField(15); 
		ReturnedDateTextField=new JTextField(15); 
		ReturnedCommentTextField=new JTextField(15); 
		panel1=new JPanel(); 
		panel1.setLayout(new GridLayout(4,2)); 
		panel1.add(ReturnedBookStudentLabel); 
		panel1.add(ReturnedBookStudentTextField); 
		panel1.add(ReturnedBookNameLabel); 
		panel1.add(ReturnedBookNameTextField); 
		panel1.add(ReturnedDateLabel); 
		panel1.add(ReturnedDateTextField); 
		panel1.add(ReturnedCommentLabel); 
		panel1.add(ReturnedCommentTextField); 
		c.add(panel1,BorderLayout.CENTER); 
		panel2=new JPanel(); 
		panel2.setLayout(new GridLayout(1,4)); 
		ClearBtn=new JButton("清空"); 
		YesBtn=new JButton("确定"); 
		UpdateBtn=new JButton("更新"); 
		CancelBtn=new JButton("取消"); 
		ClearBtn.addActionListener(this); 
		YesBtn.addActionListener(this); 
		UpdateBtn.addActionListener(this); 
		UpdateBtn.setEnabled(false); 
		CancelBtn.addActionListener(this); 
		panel2.add(ClearBtn); 
		panel2.add(YesBtn); 
		panel2.add(UpdateBtn); 
		panel2.add(CancelBtn); 
		c.add(panel2,BorderLayout.SOUTH); 
	} 
	public void actionPerformed(ActionEvent e) 
	{ 
		if(e.getSource()==ClearBtn) 
		{ 
			ReturnedBookStudentTextField.setText(""); 
		        ReturnedBookNameTextField.setText(""); 
		        ReturnedDateTextField.setText(""); 
		        ReturnedCommentTextField.setText(""); 
		} 
		else if(e.getSource()==CancelBtn) 
		{ 
			this.dispose(); 
		} 
		else if(e.getSource()==YesBtn) 
		{ 
			try 
			{ 
				String strSQL="select studentName,bookName,borrowDate,com from BookBrowse where studentName='"+ 
			        ReturnedBookStudentTextField.getText().trim()+"'and bookName='"+ 
			        ReturnedBookNameTextField.getText().trim()+"'"; 
			        rs=db.getResult(strSQL); 
			        if(!rs.first()) 
			        { 
			        	JOptionPane.showMessageDialog(null,"此学生没有借过书！或者没有此书！"); 
			      
			        } 
			        else 
			        { 
			        	ReturnedBookStudentTextField.setText(rs.getString(1)); 
			        	ReturnedBookNameTextField.setText(rs.getString(2)); 
			        	ReturnedDateTextField.setText(rs.getString(3)); 
			        	ReturnedCommentTextField.setText(rs.getString(4)); 
			        	UpdateBtn.setEnabled(true); 
			        	 
			        } 
			        } 
			catch(Exception ex) 
		        { 
			    System.out.println(ex.toString()); 
		        } 
			 
			 
		} 
		else if(e.getSource()==UpdateBtn) 
		{ 
			String strSQL="update bookBrowse set returnDate=TO_DATE('"+ 
			ReturnedDateTextField.getText().trim()+"'),com='"+ 
			ReturnedCommentTextField.getText().trim()+"' where studentName='"+ 
			ReturnedBookStudentTextField.getText().trim()+"'and bookName='"+ 
			ReturnedBookNameTextField.getText().trim()+"'"; 
			if(db.updateSql(strSQL)) 
			{ 
				JOptionPane.showMessageDialog(null,"更新成功！"); 
				db.closeConnection(); 
				this.dispose(); 
			} 
			else 
			{ 
				JOptionPane.showMessageDialog(null,"更新失败！"); 
				db.closeConnection(); 
				this.dispose(); 
			} 
		} 
	} 
}