superlogin.java~34~

自己写的学生选课系统,多多关照.以后共同学习

package student;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Rectangle;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.*; //因为要用到ResultSet所以要引入sql包
import javax.swing.JOptionPane;
import java.awt.*;

public class SuperLogin extends JFrame {
    DBManager dbm = new DBManager();

    //定义结果集
    ResultSet rs;
    public SuperLogin() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        jLabel1.setFont(new java.awt.Font("宋体", Font.PLAIN, 15));
        jLabel1.setText("超级用户名：");
        jLabel1.setBounds(new Rectangle(55, 86, 110, 33));
        jLabel2.setFont(new java.awt.Font("宋体", Font.PLAIN, 15));
        jLabel2.setText("超级密码：");
        jLabel2.setBounds(new Rectangle(61, 142, 75, 34));
        jPasswordFieldPsw.setBounds(new Rectangle(147, 145, 151, 24));
        jButton1.setBounds(new Rectangle(92, 205, 79, 30));
        jButton1.setText("登陆");
        jButton1.addActionListener(new SuperLogin_jButton1_actionAdapter(this));
        jButton2.setBounds(new Rectangle(213, 205, 77, 30));
        jButton2.setText("退出");
        this.getContentPane().add(jLabel1);
        this.getContentPane().add(jTextFieldName);
        this.getContentPane().add(jPasswordFieldPsw);
        this.getContentPane().add(jLabel2);
        this.getContentPane().add(jButton1);
        this.getContentPane().add(jButton2);
        jTextFieldName.setBounds(new Rectangle(146, 89, 151, 24));
    }

    JLabel jLabel1 = new JLabel();
    JTextField jTextFieldName = new JTextField();
    JLabel jLabel2 = new JLabel();
    JPasswordField jPasswordFieldPsw = new JPasswordField();
    JButton jButton1 = new JButton();
    JButton jButton2 = new JButton();
    public void jButton1_actionPerformed(ActionEvent e) {

        if (jTextFieldName.getText().trim().equals("")) {
            JOptionPane.showMessageDialog(this, "用户名不能为空！");
        }
        //检查密码是否为空
        if (jPasswordFieldPsw.getText().trim().equals("")) {
            JOptionPane.showMessageDialog(this, "用户名密码不能为空！");
        }

        String sql = "select * from userLogin where userName = '" +
                     jTextFieldName.getText().trim() + "'and userPsw = '" +
                     jPasswordFieldPsw.getText().trim() + "'";
        boolean isexist = false;
        rs = dbm.getResult(sql);

        try {

            //next 方法将光标移动到下一行，如果返回为true 说明存在相应的用户
            isexist = rs.next();
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(this, "ERROR");
        }
        if (!isexist) { //如果不存在，则弹出登陆失败
            JOptionPane.showMessageDialog(this, "登陆失败！");
        } else { //如果存在，则弹出登陆成功 并设置相应的操作功能
            JOptionPane.showMessageDialog(this, "登陆成功！");
            MainFrame.jMenu2.setEnabled(true); //课程管理为激活状态
            MainFrame.jMenu4.setEnabled(true); //查找管理为激活状态
            MainFrame.jMenuItem11.setEnabled(true); //查找学生基本信息为激活状态
            MainFrame.jMenuItem13.setEnabled(true); //查找学生选课基本情况为激活状态
            MainFrame.jMenuItem14.setEnabled(false); //显示自己的选课情况为不可编辑
            // MainFrame.jMenu3.setEnabled(true);//选课管理为激活状态
            MainFrame.jMenu5.setEnabled(true); //信息一览状态为激活状态
            MainFrame.jMenu6.setEnabled(true); //成绩管理状态为激活状态

            this.dispose();
        }

    }


}


/***********************下面为监听类*******************************/
class SuperLogin_jButton1_actionAdapter implements ActionListener {
    private SuperLogin adaptee;
    SuperLogin_jButton1_actionAdapter(SuperLogin adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButton1_actionPerformed(e);
    }
}