test.java

这是我做的一个收发邮件的软件

package source;

import java.awt.Dimension;
import java.awt.Toolkit;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.swing.JOptionPane;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class Test {

	public static void main(String[] args) 
	{
		Test test=new Test();
		test.open();
	}
	public void open(){

	     final Display display=new Display();
		 final Shell shell=new Shell();
		 shell.setText("登陆页面");
		 shell.setSize(365, 248);
	     shell.setLayout(null);
	     int width,height;
	        width=365;
	        height= 248;
	        shell.setSize(width, height);
	        shell.setCapture(true);
	        shell.setLayout(null);
	        Toolkit kit=Toolkit.getDefaultToolkit();
	        Dimension screenSize=kit.getScreenSize();
	        shell.setBounds((screenSize.width-width)/2, (screenSize.height-height)/2, width,height);
		 DataBase db=new DataBase();
		 db.connectToDB();
		 ResultSet rs=null;
		 rs=db.executeQuery("select top 1 * from config");
	
		 try
		 {
			if(!rs.next())
			{
				db.executeInsert("insert into config(id) values(1)");
				Config config=new Config(null,display);
				config.open();
    	        ShowMail showmail=new ShowMail(shell,display);
    		    showmail.open();
			}
			else
			{
		        final Text text = new Text(shell, SWT.BORDER);
		        text.setBounds(98, 33, 170, 19);

		        final Text text_1 = new Text(shell, SWT.PASSWORD | SWT.BORDER);
		        text_1.setBounds(98, 79, 170, 19);

		        final Label label = new Label(shell, SWT.NONE);
		        label.setText("用户名");
		        label.setBounds(40, 35, 57, 19);

		        final Label label_1 = new Label(shell, SWT.NONE);
		        label_1.setText("密  码");
		        label_1.setBounds(40, 85, 36, 19);

		        final Button button = new Button(shell, SWT.NONE);
		        button.setText("确定");
		        button.addMouseListener(new MouseAdapter(){
		        	public void mouseUp(MouseEvent   e){
		        		DataBase db=new DataBase();
		        		db.connectToDB();
		        		ResultSet rs=null;
		        		rs=db.executeQuery("select * from config where id=1");

		        		String local_username="";
		        		String local_password="";
		        		try {
		            		rs.next();
							local_username=rs.getString("local_username");
			        		local_password=rs.getString("local_password");
						} catch (SQLException e1) {
							e1.printStackTrace();
						}
		        		if(text.getText().equals(local_username)&&text_1.getText().equals(local_password))
		        		{
		        			shell.close();
		        	        ShowMail showmail=new ShowMail(shell,display);
		        		    showmail.open();
		        		}
		        		else
		        		{
		        			MessageDialog.openError(null, "登陆错误", "用户名或密码错误！");
		        		}
		        	}
		        });
		        button.setBounds(104, 135, 48, 22);
		        final Button button_1 = new Button(shell, SWT.NONE);
		        button_1.setText("取消");
		        button_1.addMouseListener(new MouseAdapter(){
		        	public void mouseUp(MouseEvent   e){
		        		System.exit(0);
		        	}
		        });
		        button_1.setBounds(192, 135, 48, 22);
		        shell.open();
		        while (!shell.isDisposed()) {
		            if (!display.readAndDispatch())
		                display.sleep();
		        }
			}
			db.stmt.close();
			db.conn.close();
		} 
		 catch (SQLException e) {
		}
	}
}