userdelete.java

教材管理系统

package bookmanager;

import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.awt.*;
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 userDelete
    extends JFrame {
  //定义结果集
  ResultSet rs;
  //定义数据库操作对象
  private DBManager db = new DBManager();

  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();
  JLabel jLabel3 = new JLabel();
  JTextField jTextFieldprofessional = new JTextField();
  JLabel jLabel4 = new JLabel();
  JTextField jTextFielddepartment = new JTextField();
  JLabel jLabel5 = new JLabel();
  JTextField jTextFieldtel = new JTextField();
  JLabel jLabel6 = new JLabel();
  JTextField jTextFieldpnum = new JTextField();
  JLabel jLabel7 = new JLabel();
  JTextField jTextFieldadmissiontime = new JTextField();
  JLabel jLabel10 = new JLabel();
  JButton jButtonsearch = new JButton();
  JLabel jLabel8 = new JLabel();
  JTextField jTextFieldpower = new JTextField();
  JLabel jLabel9 = new JLabel();

  public userDelete() {
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public static void main(String[] args) {
    userDelete userDelete = new userDelete();
  }

  private void jbInit() throws Exception {
    jPasswordold.setText("");
    jButtonOK.setBackground(UIManager.getColor("InternalFrame.inactiveTitleForeground"));
    jButtonOK.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonOK.setActionCommand("确定");
    jButtonOK.setText("确定");
    jButtonOK.addMouseListener(new userDelete_jButtonOK_mouseAdapter(this));
    jTextFieldusername.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldusername.setText("");
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("用户名");
    jButtonCancel.setBackground(UIManager.getColor("InternalFrame.inactiveTitleForeground"));
    jButtonCancel.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonCancel.setText("取消");
    jButtonCancel.addMouseListener(new userDelete_jButtonCancel_mouseAdapter(this));
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setText("密码");
    this.getContentPane().setLayout(xYLayout1);
    xYLayout1.setWidth(559);
    xYLayout1.setHeight(372);
    this.getContentPane().setBackground(UIManager.getColor("InternalFrame.inactiveTitleForeground"));
    this.setTitle("删除用户");
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setText("所在专业");
    jTextFieldprofessional.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldprofessional.setText("");
    jLabel4.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel4.setText("所属院系");
    jTextFielddepartment.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFielddepartment.setText("");
    jLabel5.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel5.setText("联系电话");
    jTextFieldtel.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldtel.setSelectionStart(11);
    jTextFieldtel.setText("");
    jLabel6.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel6.setText("专业人数");
    jTextFieldpnum.setFont(new java.awt.Font("Dialog", 0, 14));
    jTextFieldpnum.setText("");
    jLabel7.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel7.setText("入学时间");
    jTextFieldadmissiontime.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel10.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel10.setText("形如：2007-09-01");
    jButtonsearch.setBackground(UIManager.getColor("InternalFrame.inactiveTitleForeground"));
    jButtonsearch.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonsearch.setText("查询");
     jButtonsearch.addMouseListener(new userDelete_jButtonsearch_mouseAdapter(this));
    jLabel8.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel8.setText("登陆权限");
    jTextFieldpower.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel9.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel9.setText("输入用户名点击查询显示用户信息");
    this.getContentPane().add(jTextFieldusername,     new XYConstraints(128, 67, 147, 28));
    this.getContentPane().add(jLabel1,   new XYConstraints(45, 69, 60, 34));
    this.getContentPane().add(jTextFieldprofessional,     new XYConstraints(128, 118, 147, 28));
    this.getContentPane().add(jLabel2, new XYConstraints(300, 63, 49, 34));
    this.getContentPane().add(jLabel4, new XYConstraints(300, 118, 68, 28));
    this.getContentPane().add(jPasswordold,  new XYConstraints(371, 67, 147, 28));
    this.getContentPane().add(jTextFielddepartment,  new XYConstraints(372, 114, 147, 28));
    this.getContentPane().add(jTextFieldtel,    new XYConstraints(128, 168, 147, 28));
    this.getContentPane().add(jLabel6, new XYConstraints(291, 171, 76, 26));
    this.getContentPane().add(jTextFieldpnum,   new XYConstraints(372, 164, 147, 28));
    this.getContentPane().add(jLabel7, new XYConstraints(283, 212, 74, 34));
    this.getContentPane().add(jLabel10,  new XYConstraints(372, 256, 140, 27));
    this.getContentPane().add(jTextFieldadmissiontime,  new XYConstraints(374, 211, 147, 28));
    this.getContentPane().add(jLabel5,  new XYConstraints(45, 170, 82, 27));
    this.getContentPane().add(jLabel8,   new XYConstraints(45, 220, 64, 31));
    this.getContentPane().add(jTextFieldpower,   new XYConstraints(128, 218, 147, 28));
    this.getContentPane().add(jLabel9,   new XYConstraints(49, 24, 273, 31));
    this.getContentPane().add(jLabel3, new XYConstraints(45, 117, 67, 37));
    this.getContentPane().add(jButtonCancel, new XYConstraints(302, 292, 77, 32));
    this.getContentPane().add(jButtonOK,    new XYConstraints(225, 292, 77, 32));
    this.getContentPane().add(jButtonsearch,   new XYConstraints(148, 292, 77, 32));
  }

  void jButtonCancel_mouseClicked(MouseEvent e) {
    this.dispose();
  }

  void jButtonOK_mouseClicked(MouseEvent e) {
    String strSQL;
// 校验用户名是否为空
    if (jTextFieldusername.getText().trim().equals("")) {
      JOptionPane.showMessageDialog(null, "用户名不许为空！");
      return;
   }
    //生成sql操作语句，查询要删除的用户名是否存在，若存在执行删除，若不存在提示并返回
    strSQL = "select * from user where Username='" +
        jTextFieldusername.getText().trim() + "' and Password='" +
        jPasswordold.getText().trim() + "'";
    rs = db.getResult(strSQL);
    boolean isexist = false;
    try {
      isexist = rs.first();
    }
    catch (SQLException ex1) {
    }
    //若用户名不存在，提示警告信息
    if (!isexist)

    {
      JOptionPane.showMessageDialog(null, "用户名不存在，或原密码不正确！");
    }
    else {
      strSQL = "delete from user where username='" +
          jTextFieldusername.getText().trim() + "'";
      //由数据库操作对象执行数据库操作，并返回操作成功失败的提示信息
      if (db.executeSql(strSQL)) {
        JOptionPane.showMessageDialog(null, "成功删除！");
      }
      else {
        JOptionPane.showMessageDialog(null, " 删除失败，请重新操作！");
      }
    }
  }

  void jButtonsearch_mouseClicked(MouseEvent e) {
   String strSQL;
  //校验用户名是否为空
  if (jTextFieldusername.getText().trim().equals("")) {
     JOptionPane.showMessageDialog(null, "用户名不许为空！");
     return;
   }

 //生成sql操作语句，查询要删除的用户名是否存在，若存在执行删除，若不存在提示并返回
 strSQL = "select * from user where Username='" +
     jTextFieldusername.getText().trim() + "' and Password='" +
     jPasswordold.getText().trim() + "'";
 rs = db.getResult(strSQL);
 boolean isexist = false;
 try {
   isexist = rs.first();
 }
 catch (SQLException ex1) {
 }
 //若此用户不存在，提示警告信息
 if (!isexist) {
   JOptionPane.showMessageDialog(null, "用户名不存在或密码不正确！");
 }
 else {
   try {
     //将游标移动到首位置
     rs.first();
     //在文本框中显示数据集中的数据
     jTextFieldprofessional.setText(rs.getString("professional"));
     jTextFielddepartment.setText(rs.getString("department"));
     jTextFieldtel.setText(rs.getString("tel"));
     jTextFieldpnum.setText(rs.getString("pnum"));
     jTextFieldadmissiontime.setText(rs.getString("admissiontime"));
      jTextFieldpower.setText(rs.getString("pnum"));

      }
   catch (SQLException ex) {
   }
 }

}










}
class userDelete_jButtonsearch_mouseAdapter
    extends java.awt.event.MouseAdapter {
  userDelete adaptee;

  userDelete_jButtonsearch_mouseAdapter(userDelete adaptee) {
    this.adaptee = adaptee;
  }

  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonsearch_mouseClicked(e);
  }
}




class userDelete_jButtonCancel_mouseAdapter
    extends java.awt.event.MouseAdapter {
  userDelete adaptee;

  userDelete_jButtonCancel_mouseAdapter(userDelete adaptee) {
    this.adaptee = adaptee;
  }

  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonCancel_mouseClicked(e);
  }
}

class userDelete_jButtonOK_mouseAdapter
    extends java.awt.event.MouseAdapter {
  userDelete adaptee;

  userDelete_jButtonOK_mouseAdapter(userDelete adaptee) {
    this.adaptee = adaptee;
  }

  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonOK_mouseClicked(e);
  }
}