booklist.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.sql.*; //引入包java.sql.*;
import javax.swing.table.*; //引入包sqljavax.swing.table.*;
import java.util.*; //引入包sqljava.util*;
import java.awt.event.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class bookList
    extends JFrame {
  //定义结果集
  ResultSet rs;
  //定义数据库操作对象
  private DBManager db = new DBManager();

  Vector tempvector = new Vector(1, 1);
  //定义DefaultTableModel模型
  DefaultTableModel model = new DefaultTableModel();
  //定义JTable为DefaultTableModel的实例model模式
  JTable jTableResult = new JTable(model);

  XYLayout xYLayout1 = new XYLayout();
  JScrollPane jScrollPane1 = new JScrollPane();
  JButton jButtonSearch = new JButton();
  JLabel jLabel1 = new JLabel();
  JTextField jTextFieldname = new JTextField();
  JLabel jLabel2 = new JLabel();
  JTextField jTextFieldpress = new JTextField();
  JLabel jLabel3 = new JLabel();
  JTextField jTextFieldauthor = new JTextField();

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

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

  private void jbInit() throws Exception {
    xYLayout1.setWidth(564);
    xYLayout1.setHeight(374);
    this.getContentPane().setLayout(xYLayout1);
    jButtonSearch.setText("查询");
    jButtonSearch.addMouseListener(new bookList_jButtonSearch_mouseAdapter(this));
    jButtonSearch.setFont(new java.awt.Font("Dialog", 0, 16));
    // model中加入列名
    model.addColumn("书名");
    model.addColumn("出版社");
    model.addColumn("作者");
    model.addColumn("地址");
    model.addColumn("出版日期");
    model.addColumn("定价");
    model.addColumn("评论");

    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("名称");
    jTextFieldname.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldname.setText("");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setText("出版社");
    jTextFieldpress.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldpress.setText("");
    jLabel3.setText("作者");
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldauthor.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextFieldauthor.setText("");

    this.setTitle("书籍信息查询");
    this.getContentPane().add(jScrollPane1, new XYConstraints(18, 102, 530, 253));
    this.getContentPane().add(jLabel1, new XYConstraints(27, 21, 92, 27));
    this.getContentPane().add(jTextFieldname,
                              new XYConstraints(138, 22, 116, -1));
    this.getContentPane().add(jTextFieldauthor,
                              new XYConstraints(384, 20, 139, 27));
    this.getContentPane().add(jLabel3, new XYConstraints(305, 23, 62, -1));
    this.getContentPane().add(jLabel2, new XYConstraints(24, 67, 91, -1));
    this.getContentPane().add(jTextFieldpress,
                              new XYConstraints(137, 59, 117, 28));
    this.getContentPane().add(jButtonSearch, new XYConstraints(385, 59, 136, 28));
    jScrollPane1.getViewport().add(jTableResult, null);
  }

//加载数据
  void jButtonSearch_mouseClicked(MouseEvent e) {
    String strSQL;
    //
    boolean isFirst = true;
    //检验书目是否存在
    strSQL = "select * from Books ";
    if (!jTextFieldname.getText().trim().equals("")) {
      strSQL = strSQL + " where Bookname='" + jTextFieldname.getText().trim() +
          "'";
      isFirst = false;
    }
    if (!jTextFieldpress.getText().trim().equals("")) {
      if (isFirst) {
        strSQL = strSQL + " where Press='" + jTextFieldpress.getText().trim() +
            "'";
        isFirst = false;
      }
      else {
        strSQL = strSQL + " and Press='" + jTextFieldpress.getText().trim() +
            "'";
      }
    }
    if (!jTextFieldauthor.getText().trim().equals("")) {
      if (isFirst) {
        strSQL = strSQL + " where Author='" + jTextFieldauthor.getText().trim() +
            "'";
        isFirst = false;
      }
      else {
        strSQL = strSQL + " and Author='" + jTextFieldauthor.getText().trim() +
            "'";
      }

    }
    rs = db.getResult(strSQL);
    boolean isexist = false;
    try {
      isexist = rs.first();
    }
    catch (SQLException ex1) {
      JOptionPane.showMessageDialog(null, "ex1.toString() " + ex1.toString());
    }
    //若书目不存在，提示警告信息提醒用户
    if (!isexist) {
      JOptionPane.showMessageDialog(null, "书库中没有书目，请确认！");
      return;
    }
    //若存在，执行以下操作
    //清空model中的对象
    for (int n = model.getRowCount() - 1; n >= 0; n--)
      model.removeRow(n);

    try {
      rs.beforeFirst();
      while (rs.next()) {
        tempvector = new Vector(1, 1);
        tempvector.add(rs.getString("Bookname"));
        tempvector.add(rs.getString("Press"));
        tempvector.add(rs.getString("Author"));
        tempvector.add(rs.getString("Address"));
        tempvector.add(rs.getString("Pressdate"));
        tempvector.add(rs.getString("Price"));
        tempvector.add(rs.getString("Comment"));
        model.addRow(tempvector);
      }
    }
    catch (SQLException ex) {
      JOptionPane.showMessageDialog(null, "ex.toString() :" + ex.toString());
    }

  }
}

class bookList_jButtonSearch_mouseAdapter
    extends java.awt.event.MouseAdapter {
  bookList adaptee;

  bookList_jButtonSearch_mouseAdapter(bookList adaptee) {
    this.adaptee = adaptee;
  }

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