returninfoupdate.java~3~

本源码主要是书籍借阅管理系统

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

  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel8 = new JLabel();
  JLabel jLabel4 = new JLabel();
  JTextField jTextbookname = new JTextField();
  JTextField jTextborrowdate = new JTextField();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JButton jButtonupdate = new JButton();
  JLabel jLabel2 = new JLabel();
  JButton jButtonexit = new JButton();
  JTextField jTextcomment = new JTextField();
  JButton jButtondicision = new JButton();
  JButton jButtonClear = new JButton();
  JTextField jTextstudentname = new JTextField();
  JTextField jTextreturndate = new JTextField();
  JLabel jLabel5 = new JLabel();

  public returnInfoUpdate() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  public static void main(String[] args) {
    returnInfoUpdate returnInfoUpdate = new returnInfoUpdate();
  }
  private void jbInit() throws Exception {
    jTextstudentname.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextstudentname.setText("");
    jButtonClear.setFont(new java.awt.Font("Dialog", 0, 16));
     jButtonClear.setText("清空");
    jButtonClear.addMouseListener(new returnInfoUpdate_jButtonClear_mouseAdapter(this));
    jButtondicision.setFont(new java.awt.Font("Dialog", 0, 16));
     jButtondicision.setText("确定");
    jButtondicision.addMouseListener(new returnInfoUpdate_jButtondicision_mouseAdapter(this));
    jTextcomment.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextcomment.setText("");
    jButtonexit.setFont(new java.awt.Font("Dialog", 0, 16));
      jButtonexit.setText("退出");
    jButtonexit.addMouseListener(new returnInfoUpdate_jButtonexit_mouseAdapter(this));
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setText("书名");
    jButtonupdate.setFont(new java.awt.Font("Dialog", 0, 16));
     jButtonupdate.setText("更新");
    jButtonupdate.addMouseListener(new returnInfoUpdate_jButtonupdate_mouseAdapter(this));
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setText("借阅日期");
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setRequestFocusEnabled(true);
    jLabel1.setText("借阅者姓名");
    jTextborrowdate.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextborrowdate.setText("");
    jTextbookname.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextbookname.setText("");
    jLabel4.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel4.setText("备注");
    jLabel8.setText("输入借阅者姓名或书名点击确定，将调出此书相关信息");
    jLabel8.setFont(new java.awt.Font("Dialog", 0, 16));
    this.getContentPane().setLayout(xYLayout1);
    jTextreturndate.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextreturndate.setText("");
    jLabel5.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel5.setText("还书日期");
    xYLayout1.setWidth(478);
    xYLayout1.setHeight(368);
    this.getContentPane().add(jTextborrowdate, new XYConstraints(201, 161, 153, -1));
    this.getContentPane().add(jLabel1, new XYConstraints(74, 60, 88, 33));
    this.getContentPane().add(jButtonupdate, new XYConstraints(229, 312, 74, 27));
    this.getContentPane().add(jButtonexit, new XYConstraints(303, 312, 75, 28));
    this.getContentPane().add(jButtondicision, new XYConstraints(163, 312, -1, 28));
    this.getContentPane().add(jButtonClear, new XYConstraints(96, 312, 66, 28));
    this.getContentPane().add(jTextstudentname, new XYConstraints(202, 64, 150, 26));
    this.getContentPane().add(jTextcomment, new XYConstraints(202, 246, 154, -1));
    this.getContentPane().add(jLabel4, new XYConstraints(73, 257, 63, 29));
    this.getContentPane().add(jLabel5, new XYConstraints(71, 210, 87, 29));
    this.getContentPane().add(jLabel8, new XYConstraints(15, 13, 435, 25));
    this.getContentPane().add(jTextbookname, new XYConstraints(201, 112, 154, 23));
    this.getContentPane().add(jLabel2, new XYConstraints(73, 106, 89, 35));
    this.getContentPane().add(jLabel3, new XYConstraints(70, 162, 87, 29));
    this.getContentPane().add(jTextreturndate, new XYConstraints(203, 204, 153, -1));
  }

  void jButtonexit_mouseClicked(MouseEvent e) {

  }

  void jButtonupdate_mouseClicked(MouseEvent e) {

  }

  void jButtondicision_mouseClicked(MouseEvent e) {
    String sql;
       //定义变量，用来判断是否是第一个查询条件
       boolean  isfirst =true;
       sql="select * from BookBorrow ";
         //如果款型的查询条件不为空
       if (jTextstudentname.getText().trim().length() ==0)
          {}
          else
          {
             sql=sql+"  where  studentname='"+jTextstudentname.getText().trim()+"'";
             isfirst=false;
          }
               //如果颜色的查询条件不为空
         if (jTextbookname.getText().trim().length()==0)
         {}
         else
         {    //如果是第一个查询条件
           if (isfirst)
           sql=sql+" where bookname='"+jTextbookname.getText().trim() +"'";
             //如果是第二个查询条件
           else
            sql=sql+" and bookname='"+jTextbookname.getText().trim() +"'";
         }
       //执行数据库的查询操作
       rs =db.getResult(sql);
        try {
               //判断返回的结果集是否为空，若不为空显示第一条记录
          if(! rs.equals(null) )
          {  rs.first();
           jTextstudentname.setText(rs.getString("studentname"));
           jTextbookname.setText(rs.getString("bookname"));
           jTextborrowdate.setText(rs.getString("borrowdate"));
           jTextreturndate.setText(rs.getString("returndate"));
           jTextcomment.setText(rs.getString("comment"));
          }
          else
          {   JOptionPane.showMessageDialog(null,"无次纪录!");              }
        }//若出现异常，弹出警告对话框
        catch (SQLException ex) { JOptionPane.showMessageDialog(null,"发生错误!");
        }

  }

  void jButtonClear_mouseClicked(MouseEvent e) {
            jTextstudentname.setText("");
            jTextbookname.setText("");
            jTextborrowdate.setText("");
            jTextreturndate.setText("");
            jTextcomment.setText("");

  }



}

class returnInfoUpdate_jButtonexit_mouseAdapter extends java.awt.event.MouseAdapter {
  returnInfoUpdate adaptee;

  returnInfoUpdate_jButtonexit_mouseAdapter(returnInfoUpdate adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonexit_mouseClicked(e);
  }
}

class returnInfoUpdate_jButtonupdate_mouseAdapter extends java.awt.event.MouseAdapter {
  returnInfoUpdate adaptee;

  returnInfoUpdate_jButtonupdate_mouseAdapter(returnInfoUpdate adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonupdate_mouseClicked(e);
  }
}

class returnInfoUpdate_jButtondicision_mouseAdapter extends java.awt.event.MouseAdapter {
  returnInfoUpdate adaptee;

  returnInfoUpdate_jButtondicision_mouseAdapter(returnInfoUpdate adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtondicision_mouseClicked(e);
  }
}

class returnInfoUpdate_jButtonClear_mouseAdapter extends java.awt.event.MouseAdapter {
  returnInfoUpdate adaptee;

  returnInfoUpdate_jButtonClear_mouseAdapter(returnInfoUpdate adaptee) {
    this.adaptee = adaptee;
  }
  public void mouseClicked(MouseEvent e) {
    adaptee.jButtonClear_mouseClicked(e);
  }
}