borrowbook.java

虚拟的图书管理系统

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 borrowBook
    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 jLabel4 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JButton jButtonCancel = new JButton();
  JTextField jTextborrowdate = new JTextField();
  JLabel jLabel1 = new JLabel();
  JButton jButtonOk = new JButton();
  JLabel jLabel3 = new JLabel();
  JTextField jTextcomment = new JTextField();
  JButton jButtonReset = new JButton();
  JTextField jTextstudentname = new JTextField();
  JComboBox jComboBoxbookname = new JComboBox();

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

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

  private void jbInit() throws Exception {
    jTextstudentname.setText("");
    jTextstudentname.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonReset.setText("清空");
    jButtonReset.addMouseListener(new borrowBook_jButtonReset_mouseAdapter(this));
    jButtonReset.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonReset.setEnabled(true);
    jTextcomment.setText("");
    jTextcomment.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setText("日期");
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonOk.setText("确定");
    jButtonOk.addMouseListener(new borrowBook_jButtonOk_mouseAdapter(this));
    jButtonOk.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("借阅者姓名");
    jLabel1.setRequestFocusEnabled(true);
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextborrowdate.setText("");
    jTextborrowdate.setFont(new java.awt.Font("Dialog", 0, 16));
    jButtonCancel.setText("取消");
    jButtonCancel.addMouseListener(new borrowBook_jButtonCancel_mouseAdapter(this));
    jButtonCancel.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setText("书名");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel4.setText("备注");
    jLabel4.setFont(new java.awt.Font("Dialog", 0, 16));
    xYLayout1.setWidth(484);
    xYLayout1.setHeight(307);
    this.getContentPane().setLayout(xYLayout1);
    this.setTitle("书籍出借");
    this.addWindowListener(new borrowBook_this_windowAdapter(this));
    this.getContentPane().add(jTextstudentname,
                              new XYConstraints(206, 23, 150, 26));
    this.getContentPane().add(jLabel4, new XYConstraints(77, 180, 63, 29));
    this.getContentPane().add(jLabel2, new XYConstraints(75, 77, 89, 35));
    this.getContentPane().add(jTextborrowdate,
                              new XYConstraints(205, 120, 153, -1));
    this.getContentPane().add(jLabel1, new XYConstraints(78, 19, 88, 33));
    this.getContentPane().add(jLabel3, new XYConstraints(75, 133, 87, 29));
    this.getContentPane().add(jTextcomment, new XYConstraints(206, 169, 154, -1));
    this.getContentPane().add(jButtonOk, new XYConstraints(189, 248, 101, 30));
    this.getContentPane().add(jButtonCancel,
                              new XYConstraints(315, 249, 100, 29));
    this.getContentPane().add(jButtonReset, new XYConstraints(56, 250, 104, 27));
    this.getContentPane().add(jComboBoxbookname,
                              new XYConstraints(206, 74, 122, 27));
  }

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

//清空所有文本框
  void jButtonReset_mouseClicked(MouseEvent e) {
    jTextstudentname.setText("");
    jComboBoxbookname.setSelectedItem("");
    jTextborrowdate.setText("");
    jTextcomment.setText("");
  }

  void jButtonOk_mouseClicked(MouseEvent e) {
    String sql;
    //借阅者姓名是否为空
    if (jTextstudentname.getText().trim().equals("")) {
      JOptionPane.showMessageDialog(null, "借阅者姓名不许为空！");
      return;
    }
    //书名是否为空
    if (jComboBoxbookname.getSelectedItem().toString().trim().equals("")) {
      JOptionPane.showMessageDialog(null, "书名不许为空！");
      return;
    }
    //借阅日期是否为空
    if (jTextborrowdate.getText().trim().equals("")) {
      JOptionPane.showMessageDialog(null, "借阅日期不许为空！");
      return;
    }
    //然后执行插入操作
    sql = "insert into BookBorrow(Studentname,Bookname,Borrowdate,Returndate,Comment)values(  ";
    sql = sql + "'" + jTextstudentname.getText() + "',";
    sql = sql + "'" + jComboBoxbookname.getSelectedItem().toString().trim() +
        "',";
    sql = sql + "'" + jTextborrowdate.getText() + "',";
    sql = sql + "'',";
    sql = sql + "'" + jTextcomment.getText() + "'";
    sql = sql + ")";
    //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(sql)) {
      JOptionPane.showMessageDialog(null, "成功添加！");
    }
    else {
      JOptionPane.showMessageDialog(null, " 添加失败，请重新操作！");
    }

  }

//窗体启动时自动调出数据库中书籍信息，因此操作员可以选择书籍
  void this_windowOpened(WindowEvent e) {
    String strSQL = "";
    strSQL = "select bookname from Books  ";
    rs = db.getResult(strSQL);
    boolean isexist = false;
    try {
      isexist = rs.first();
    }
    catch (SQLException ex1) {
    }
    //若用户名不存在，提示警告信息提醒用户从新输入
    if (!isexist) {
      JOptionPane.showMessageDialog(null,"书库中没有书目，请确认！");
      return;
    }
    else {
      try {
        //游标置到首位
        rs.beforeFirst();
        //循环遍历rs中的数据，将其加入到jComboBoxbookname下拉框中，用于用户选择
        while (rs.next()) {
          jComboBoxbookname.addItem(rs.getString("Bookname"));
        }
      }
      catch (SQLException ex) {
      }
    }
  }
}

class borrowBook_jButtonCancel_mouseAdapter
    extends java.awt.event.MouseAdapter {
  borrowBook adaptee;

  borrowBook_jButtonCancel_mouseAdapter(borrowBook adaptee) {
    this.adaptee = adaptee;
  }

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

class borrowBook_jButtonReset_mouseAdapter
    extends java.awt.event.MouseAdapter {
  borrowBook adaptee;

  borrowBook_jButtonReset_mouseAdapter(borrowBook adaptee) {
    this.adaptee = adaptee;
  }

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

class borrowBook_jButtonOk_mouseAdapter
    extends java.awt.event.MouseAdapter {
  borrowBook adaptee;

  borrowBook_jButtonOk_mouseAdapter(borrowBook adaptee) {
    this.adaptee = adaptee;
  }

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

class borrowBook_this_windowAdapter
    extends java.awt.event.WindowAdapter {
  borrowBook adaptee;

  borrowBook_this_windowAdapter(borrowBook adaptee) {
    this.adaptee = adaptee;
  }

  public void windowOpened(WindowEvent e) {
    adaptee.this_windowOpened(e);
  }
}