mail.java

没有什么难的

package UI;
import SendMail.*;
import DB.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;

import java.sql.*;

public class Mail extends JPanel implements ActionListener
{
	Properties pro = new Properties();
	JLabel re = new JLabel("收信人");
	JLabel sub = new JLabel("主题");
	JLabel mess = new JLabel("内容");

	JTextField receiver = new JTextField();
	JTextField title = new JTextField();
	JTextArea body = new JTextArea();
	
	DefaultListModel listModel = new DefaultListModel();
	JList list;

	JButton template = new JButton("载入模板");
	JButton saveTemplate = new JButton("保存模板");
	JButton send = new JButton("发送");
	JButton clear = new JButton("清空");
	JComboBox combo;
	Info info;
	String sReceiver =  null;
	String sTitle = null;
	String sBody = null;

	DB db;
	ResultSet rs;
	Vector v = new Vector();
	String sql1 = "select deptName from department";
	
	JFileChooser fc;
	File f;
	int flag;

	public Mail(Info info)
	{
		db = new DB();
		fc = new JFileChooser();

		this.setLayout(null);
		this.setSize(800,600);
		re.setBounds(10,50,60,35);
		sub.setBounds(10,100,60,35);
		mess.setBounds(10,150,60,35);
		receiver.setBounds(70,50,400,35);
		title.setBounds(70,100,400,35);		
		JScrollPane  sbody = new JScrollPane(body);
		sbody.setBounds(70,150,400,350);
		
		list = new JList(listModel);
		JScrollPane sList = new JScrollPane(list);		
		sList.setBounds(500,100,250,300);
	
		try
		{
			rs = db.search(sql1);
			while(rs.next())
			{
				v.add(rs.getString("deptName"));
			}
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		combo = new JComboBox(v);
		combo.setBounds(500,50,250,35);
		combo.addActionListener(this);

		template.setBounds(500,430,90,30);
		template.addActionListener(this);
		saveTemplate.setBounds(630,430,90,30);
		saveTemplate.addActionListener(this);
		send.setBounds(500,470,90,30);
		send.addActionListener(this);
		clear.setBounds(630,470,90,30);
		clear.addActionListener(this);

		this.add(re); this.add(sub); this.add(mess);
		this.add(receiver);
		this.add(title);
		this.add(sbody);
		this.add(sList);
		this.add(template);
		this.add(saveTemplate);
		this.add(send);
		this.add(clear);
		this.add(combo);

		this.info = info;
	}
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource() == clear)
		{
			receiver.setText("");
			title.setText("");
			body.setText("");
		}
		if(e.getSource() == send)
		{
			sReceiver = receiver.getText();
			sTitle = title.getText();
			sBody = body.getText();
			String [] receiveList = sReceiver.split(";");
			new SendMail(sTitle,sBody,receiveList,info);

		}
		
		if(e.getSource() == template)
		{
			try
			{
				fc.setDialogTitle("Open Templete");
				flag=fc.showOpenDialog(this);
			}
			catch (Exception tempException)
			{
				tempException.printStackTrace();
			}
            if(flag==JFileChooser.APPROVE_OPTION)    
            {    
             //获得该文件    
            	f = fc.getSelectedFile();    
            	System.out.println("open file----"+f.getName()); 
            	try {
					FileReader fr = new FileReader(f);
					BufferedReader br = new BufferedReader(fr);
					String line = null;
					while((line = br.readLine())!=null)
					{
						body.append(line+"\n");
					}
					br.close();
					fr.close();
				} catch (Exception e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
					
				}
             }
		}
		
		if(e.getSource() == saveTemplate)
		{
			fc.setDialogTitle("load Template"); 
			//String fileName = null;
			flag=fc.showSaveDialog(this);
			if(flag==JFileChooser.APPROVE_OPTION)    
            {    
                f=fc.getSelectedFile();   
       			try {       				
	    			FileWriter fw = new FileWriter(f);    			
	    			String saveTemp = null;
	    			saveTemp = body.getText();
	    			String []line = saveTemp.split("\n");
	    			for(int i = 0; i < line.length; i++)
	    			{
	    				fw.write(line[i]+"\r\n");
	    			}
	    		
	    			fw.close();
       			} catch (IOException e1) {    				
    				e1.printStackTrace();
    			}
            }  

			
			//String sqlSave = "updata template set template = '"+saveTemp+"' where 
		}
		if(e.getSource() == combo)
		{
			receiver.setText("");
			String sReceiver = "";
			String sDept = (String)combo.getSelectedItem();
			String sql ="select * from department a, employee b where a.deptName=b.deptName and b.deptName='"+sDept+"'";
			//String sqlEmail ="select email from department a, employee b where a.deptName=b.deptName and b.deptName='"+sDept+"'";
			listModel.removeAllElements();
			try
			{
				rs.close();	
				rs = db.search(sql);
				while(rs.next())
				{
					listModel.addElement(rs.getString("name"));
					sReceiver += rs.getString("email") + ";";
				}
				receiver.setText(sReceiver);
			}
			catch (Exception sqlException)
			{
				sqlException.printStackTrace();
			}			
		}		
	}
	public static void main(String args[])
	{
		JFrame f = new JFrame();
		f.add(new Mail(new Info()));
		f.setSize(800,600);
		f.setVisible(true);
	}
}