searmajinfobymajnamehandler.java

在本系统中

package jin.handler;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import java.util.*;

import jin.dao.*;
import jin.bean.*;
import jin.view.*;
import jin.internalFrame.*;


//可以按照专业编号、专业名称、院系名称分别查询专业信息，也可以查询所有的专业信息。
//显示的专业信息包括：专业编号、专业名称、院系名称三个数据项。

//按照专业编号查询

public class SearMajInfoByMajNameHandler extends JInternalFrame
{
	private JTable table;
	
	
	private SearMajInfoByMajName searMajInfoByMajName;
	private JTextField field;	
	
	public SearMajInfoByMajNameHandler(SearMajInfoByMajName searMajInfoByMajNa)  //,String Id
	{
		this.searMajInfoByMajName=searMajInfoByMajNa;
		field=searMajInfoByMajName.getField();
	
		searMajInfoByMajName.getButtonsPanel().getButton(0).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					String[] ccolumnNames={"专业编号","专业名称","院系名称"
					};
		
					DefaultTableModel tableModel=new DefaultTableModel(ccolumnNames,0);		
					
					String sql1="select * from majorInfo";
					
					MajorInfoDAO majorInfoDAO=new MajorInfoDAO();
					ArrayList majorlist=majorInfoDAO.excuteQuery(sql1);
					MajorInfoBean majorInfoBean=null;
					
					int flag=0;
					
					for(int i=0;i<majorlist.size();i++)
					{
						majorInfoBean=(MajorInfoBean)majorlist.get(i);
						if(majorInfoBean.getMajorName().trim().equals(field.getText().trim()) && majorInfoBean.getState().trim().equals("在编"))
						{
							String[] object={majorInfoBean.getMajorID(),majorInfoBean.getMajorName(),majorInfoBean.getBelongTo()
							};	
							tableModel.addRow(object);	
							flag=1;					
						}
					}					
					
					
					if(flag==0)
					{
						JOptionPane.showMessageDialog(null,"没有该名称的专业!");
					}
					
					if(flag==1)
					{
						table=new JTable(tableModel);
					
						JScrollPane scrollPanel=new JScrollPane(table,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
						searMajInfoByMajName.add(scrollPanel,BorderLayout.CENTER);
						searMajInfoByMajName.setSize(450,451);		
					}			
							
				}
			}
		);	
		
		searMajInfoByMajName.getButtonsPanel().getButton(1).addActionListener
		(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
					searMajInfoByMajName.setVisible(false);
				}
			}
		);

	}

}