tushuchaxun.java

一个简单的图书管理系统

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
import javax.swing.table.*;
import java.util.Vector;
public class TushuChaxun extends JFrame implements ActionListener{
	ShuJuKu db=new ShuJuKu();
	ResultSet rs;
	JPanel p1,p2,p3,p4,p5;
	JLabel label;
	JRadioButton rb[];
	String rbnames[]={"图书编号","书名","图书作者","出版社","字数","责任编辑","主题分类","借阅分类","总册数","库存量"},bnames[]={"查询按钮","借阅或修改","删除按钮"},chaxun;
	ButtonGroup radioGroup;
	JTextField field;
	JTable table=null;
	DefaultTableModel defaultModel=null;
	JButton buttons[];
	public TushuChaxun(){
		super("图书查询与借阅");
		label=new JLabel("查询条件：");
		field=new JTextField(15);
		p1=new JPanel();
		p1.add(label);
		p1.add(field);
		p2=new JPanel();
		radioGroup=new ButtonGroup();
		rb=new JRadioButton[10];
		for(int i=0;i<10;i++){
			rb[i]=new JRadioButton(rbnames[i],false);
			radioGroup.add(rb[i]);
			p2.add(rb[i]);
		}
		rb[0].setSelected(true);
		p3=new JPanel();
		p3.setLayout(new GridLayout(2,1,0,0));
		p3.add(p1);
		p3.add(p2);
		p4=new JPanel();
		String[] name={"图书编号","书名","图书作者","出版社","字数","责任编辑","主题分类","借阅分类","总册数","库存量","备注"};
		String[][] data=new String[0][0];
		defaultModel=new DefaultTableModel(data,name);
		table=new JTable(defaultModel);
		table.setPreferredScrollableViewportSize(new Dimension(800,100));
		JScrollPane s=new JScrollPane(table);
		p4.add(s);
		p5=new JPanel();
		buttons=new JButton[3];
		for(int i=0;i<3;i++){
			buttons[i]=new JButton(bnames[i]);
			buttons[i].addActionListener(this);
			p5.add(buttons[i]);
		}
		Container c=getContentPane();
        c.add(p3,BorderLayout.NORTH);
        c.add(p4,BorderLayout.CENTER);
        c.add(p5,BorderLayout.SOUTH);;	
	} 
	public void actionPerformed(ActionEvent e){   
	    //--查询按钮功能--
		if(e.getSource()==buttons[0]){	
		    if(rb[0].isSelected())chaxun="tushuhao";
		    else if(rb[1].isSelected())chaxun="tushuming";
		    else if(rb[2].isSelected())chaxun="zuozhe";
		    else if(rb[3].isSelected())chaxun="chubansheming";
		    else if(rb[4].isSelected())chaxun="zishu";
		    else if(rb[5].isSelected())chaxun="zerenbianji";
		    else if(rb[6].isSelected())chaxun="zhutifenlei";
		    else if(rb[7].isSelected())chaxun="jieyuefenlei";
		    else if(rb[8].isSelected())chaxun="zongceshu";
		    else if(rb[9].isSelected())chaxun="kucunliang";
		    
	        if(e.getSource()==buttons[0]){   
	            String strSQL;
                strSQL="select tushuhao,tushuming,zuozhe,chubansheming,zishu,zerenbianji,zhutifenlei,jieyuefenlei,zongceshu,kucunliang,tushujianjie From tushuxinxi where "+chaxun+" like '"+field.getText()+"%'";
	            try{
	               //首先要删除table中的数据先：
	                int rowCount=defaultModel.getRowCount()-1;//取得table中的数据行；
	                int j=rowCount;
	                for(int i=0;i<=rowCount;i++){
	             	defaultModel.removeRow(j);   //删除rowCount行的数据；
	        	    defaultModel.setRowCount(j); //重新设置行数；
	        	    j=j-1;
	                }
		            rs=db.getResult(strSQL);
		            while(rs.next()){
		               Vector data=new Vector();
			           data.addElement(rs.getString(1));
			           data.addElement(rs.getString(2));
			           data.addElement(rs.getString(3));
			           data.addElement(rs.getString(4));
		 	           data.addElement(rs.getString(5));
		 	           data.addElement(rs.getString(6));
		 	           data.addElement(rs.getString(7));
		 	           data.addElement(rs.getString(8));
		 	           data.addElement(rs.getString(9));
		 	           data.addElement(rs.getString(10));
		 	           data.addElement(rs.getString(11));
			           defaultModel.addRow(data);
		           }
		           table.revalidate();
	          } catch(SQLException sqle){
			    System.out.println(sqle.toString());
		      }
	            catch(Exception ex){
			    System.out.println(ex.toString());
		      }
	      }
	  }
	  //--修改按钮功能--
	  else if(e.getSource()==buttons[1]){
	 	if(table.getSelectedRow()==-1){
		  JOptionPane.showMessageDialog(null,"请选择要修改的行！");
		  return;
		}						
	 	String str[]=new String[11];
	 	int row=table.getSelectedRow();
	 	for(int i=0;i<11;i++){
	 	   str[i]=(String)table.getValueAt(row,i);
	 	}
	 	TushuTianjia tsset1=new TushuTianjia(2);
		Dimension FrameSize=tsset1.getPreferredSize();
		Dimension MainFrameSize=getSize();
		Point loc=getLocation();
		tsset1.setLocation((MainFrameSize.width-FrameSize.width)/2+loc.x,
		(MainFrameSize.height-FrameSize.height)/2+loc.y);
		for(int i=0;i<10;i++){
		  tsset1.fields[i].setText(str[i]);	
		}
		tsset1.textArea.setText(str[10]);
		tsset1.pack();
		tsset1.show();  
	 }
	 //--删除按钮功能--
	 else if(e.getSource()==buttons[2]){
	 	int rows[];
	 	rows=new int[table.getSelectedRows().length];
	 	
	 	for(int i=0;i<table.getSelectedRows().length;i++){
	        rows[i]=table.getSelectedRows()[i];
	 	    String xno=(String)table.getValueAt(rows[i],0);
	    	String strSql="delete from tushuxinxi where tushuhao='"+xno.trim()+"'";
	    	try{
		        if(db.updateSql(strSql)) {
			       JOptionPane.showMessageDialog(null,"删除信息成功！");
			       this.dispose();
		        }
		        else{
		           JOptionPane.showMessageDialog(null,"添加信息失败请认真填写各项信息!");
		           this.dispose();
	        	}
	
		   }catch(Exception ex){
	           System.out.println(ex.toString());
	       }
	  }
	   db.closeConnection();
   }
  }
}