用户登陆_Java_完整版

这是一个用SWT做的用户登陆程序：

----------------------可视化用户登陆系统----------------------------

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
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 Swt_Check {

    public static void main(String[] args) {
        Display mianWindow = new Display();
        //创建一个主窗口
        final Shell window = new Shell();
        //打开主窗口大小
        window.setBounds(30, 75, 300, 400);
        //设置主窗口的标题
        window.setText("登陆界面");

        //创建触发按钮以及按钮的显示文字和大小位置
        Button surebutton = new Button(window,SWT.NONE);
        Button nosurebutton = new Button(window,SWT.NONE);
        surebutton.setText("确定");
        nosurebutton.setText("取消");
        surebutton.setBounds(160, 235, 75, 30);
        nosurebutton.setBounds(60, 235, 75, 30);

        //创建输入Text框及其位置
        final Text nameText = new Text(window,SWT.NONE);
        final Text passNumber = new Text(window,SWT.PASSWORD);
        nameText.setBounds(100, 100, 110, 20);
        passNumber.setBounds(100, 160, 110, 20);

        //创建标签
        Label nameLabel = new Label(window,SWT.NONE);
        nameLabel.setText("账号：");
        nameLabel.setBounds(60, 105, 40,20);

        Label passLabel = new Label(window,SWT.NONE);
        passLabel.setText("密码：");
        passLabel.setBounds(60, 165, 40, 20);

        //输入后单击确定后的操作
        surebutton.addSelectionListener(new SelectionAdapter(){
            public void widgetSelected(SelectionEvent e){
                //创建一个adm数组
                Admin[] admin = new Admin[3];

                //实例化三个账号
                admin[0] = new Admin("admin", "admin");
                admin[1] = new Admin("admin1", "pastNumber");
                admin[2] = new Admin("admin2", "pastNumber");


                //新建一个布尔型和整型数据，布尔值用于判断，整型判断是那个账号登陆
                boolean past = false;
                int pastN = 0;

                //判断账号密码是否正确
                for(int i=0;i<admin.length;i++){
                    if(admin[i].getName().equals(nameText.getText())&&admin[i].getPastNumber().equals(passNumber.getText())){
                        past = true;
                        pastN = i;
                        break;
                    }
                }

                //输出账号密码是否正确
                if(past){
                    //从新打开一个界面输出欢迎用户
                    Shell welWindow = new Shell(window);
                    welWindow.setBounds(120, 130, 450, 200);
                    Label welText = new Label(welWindow,SWT.NONE);
                    welText.setText("欢迎 " +admin[pastN].getName() + "用户登陆！");
                    welText.setBounds(140, 60, 180, 90);
                    welWindow.open();
                }
                else{
                    Shell noPassWindow = new Shell(window);
                    noPassWindow.setBounds(120, 130, 450, 200);
                    Label noPassText = new Label(noPassWindow,SWT.NONE);
                    noPassText.setText("对不起，您输入的账号或密码有误！");
                    noPassText.setBounds(140, 60, 180, 90);
                    noPassWindow.open();
                }
            }


        }

        );


        nosurebutton.addSelectionListener(new SelectionAdapter(){
            public void widgetSelected(SelectionEvent e){{
                window.close();
            }}});
        //打开窗体
        window.open();
        while(!window.isDisposed()){//如果主窗体没有关闭则一直循环
            if(!mianWindow.readAndDispatch()){//如果display不忙
                mianWindow.sleep();//休眠
            }
        }
        mianWindow.dispose();

    }

}

class Admin{
    private String name;
    private String pastNumber;

    Admin(String name, String pastNumber){
        this.name = name;
        this.pastNumber = pastNumber;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPastNumber() {
        return pastNumber;
    }

    public void setPastNumber(String pastNumber) {
        this.pastNumber = pastNumber;
    }



}

=========================程序的运行结果如下==============================
打开时，用户的登陆界面