userlogin.java

本源码主要有主界面模块,操作员管理,产品信息管理,入库操作,出库操作,库存信息管理,数据操作模块组成,数据库为ACCESS2003.

package Manager;

import java.awt.*;
import javax.swing.*;

import com.borland.jbcl.layout.*;
import java.awt.event.*;
import java.sql.*;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class userLogin extends JDialog {
 ResultSet rs;    //定义结果集
 private DBManager db =new DBManager();//定义数据库操作对象
 MainFrame myMain;  //定义主窗口类，用于操作父窗体

  JPanel panel1 = new JPanel();
  BorderLayout borderLayout1 = new BorderLayout();
  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel2 = new JLabel();
  JButton jButtonCancel = new JButton();
  JLabel jLabel1 = new JLabel();
  JTextField jTextFieldusername = new JTextField();
  JButton jButtonOK = new JButton();
  JPasswordField jPasswordold = new JPasswordField();

  public userLogin(Frame frame, String title, boolean modal) {
    super(frame, title, modal);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public userLogin() {
    this(null, "", false);
  }

  public userLogin(MainFrame  pmain) {
     this(null, "", false);
      myMain=pmain;
 }

  private void jbInit() throws Exception {
    panel1.setLayout(borderLayout1);
    this.getContentPane().setLayout(xYLayout1);
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setText("密码");
    jButtonCancel.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonCancel.setText("取消");
    jButtonCancel.addMouseListener(new userLogin_jButtonCancel_mouseAdapter(this));
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("用户名");
    jTextFieldusername.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldusername.setText("");
    jButtonOK.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonOK.setText("确定");
    jButtonOK.addMouseListener(new userLogin_jButtonOK_mouseAdapter(this));
    jPasswordold.setText("");
    xYLayout1.setWidth(410);
    xYLayout1.setHeight(239);
    this.setTitle("用户登录");
    getContentPane().add(panel1,  new XYConstraints(0, 0, -1, -1));
    this.getContentPane().add(jLabel1,  new XYConstraints(86, 49, 99, 34));
    this.getContentPane().add(jLabel2, new XYConstraints(88, 98, 80, 34));
    this.getContentPane().add(jTextFieldusername,   new XYConstraints(203, 50, 111, 31));
    this.getContentPane().add(jPasswordold,  new XYConstraints(204, 93, 110, 33));
    this.getContentPane().add(jButtonCancel,  new XYConstraints(201, 162, 94, 32));
    this.getContentPane().add(jButtonOK,  new XYConstraints(89, 163, 91, 31));
  }

  void jButtonCancel_mouseClicked(MouseEvent e) {
            this.dispose();
  }
//操作员登陆
  void jButtonOK_mouseClicked(MouseEvent e) {
    //检验用户名是否为空
    if(jTextFieldusername.getText().toString().trim().equals("") )
               { JOptionPane.showMessageDialog(null,"用户名不可为空！");
                    return;}
    //检验密码是否为空
       if(jPasswordold.getText().toString().trim().equals("") )
               {JOptionPane.showMessageDialog(null,"密码不可为空！");
                   return;}
      //定义字符串对象,代表sql语句
    String strSQL ;
    //生成sql语句，用户名和密码从相应文本框取得
     strSQL="select * from user where Username='"+jTextFieldusername.getText().toString().trim() +"' and Password='"+jPasswordold.getText().toString().trim()+"'";
       //由DBManager对象执行查询过程
     rs=db.getResult(strSQL) ;
      //判断结果集是否为空
                 boolean  isexist=false;
                try {
                  isexist = rs.first();
                }
                catch (SQLException ex1) {
                }
        //若为空，则说明用户名不存在或密码不正确，弹出警告信息，并设定主窗体权限为无
         if(!isexist )
            {JOptionPane.showMessageDialog(null,"用户名不存在，或密码不正确！");
               myMain.setEnable(false,false);

            }
       //若不为空，则说明用户名存在且密码正确，设定主窗体权限为有
          else
            {
              try {
                rs.first();
                //若为管理员...
                if (rs.getString("Power").equals("管理员")) {
                  myMain.setEnable(true, true);
                  this.dispose();
                 }
                 //若为操作员
                else {
                  myMain.setEnable(true, false);
                  this.dispose();
                }
              }
              catch (SQLException ex) {
              }

        }

  }

}

class userLogin_jButtonCancel_mouseAdapter extends java.awt.event.MouseAdapter {
  userLogin adaptee;

  userLogin_jButtonCancel_mouseAdapter(userLogin adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonCancel_mouseClicked(e);
  }
}

class userLogin_jButtonOK_mouseAdapter extends java.awt.event.MouseAdapter {
  userLogin adaptee;

  userLogin_jButtonOK_mouseAdapter(userLogin adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonOK_mouseClicked(e);
  }
}