AddBook 类的简单修改（增加注释文…

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.GridBagLayout;

import java.awt.Image;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InvalidClassException;

import java.io.NotSerializableException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import javax.swing.UnsupportedLookAndFeelException;

public class AddBook extends InitFrame

{

public AddBook(){

super("图书管理系统—添加书目","Library.png",460,340);

//设置布局

this.setLayout(new
BorderLayout());

//
设置大小不可调整

this.setResizable(false);

panel_north = new
JPanel();

panel_north.setLayout(new GridBagLayout());

this.add(panel_north,BorderLayout.CENTER);

panel_south = new
JPanel();

panel_south.setLayout(new
FlowLayout());

this.add(panel_south,BorderLayout.SOUTH);

this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

//设置标签

label_book_class = new
JLabel("分类：");

label_number = new
JLabel("编号：");

label_name = new
JLabel("书名：");

label_author = new
JLabel("作者：");

label_press = new
JLabel("出版社：");

label_count = new
JLabel("数量：");

//设置 下拉列表框 （书籍分类）

File file_Library= new
File("E:\\图书管理系统\\分类");

file_class =
file_Library.listFiles();

comBoBox= new
JComboBox(file_class);

// 设置接受输入的文本域

field_number = new
JTextField(WIDTH );

field_name =
new JTextField(WIDTH );

field_author = new
JTextField(WIDTH );

field_author = new
JTextField(WIDTH );

field_press = new
JTextField(WIDTH );

field_count = new
JTextField(WIDTH );

button_ok = new
JButton("确定",new ImageIcon("ok.png"));

button_ok.addActionListener(new
ActionListener(){

public void
actionPerformed(ActionEvent e)

{

//将屏幕的输入转换成Book
类型的对象并写入对应分类下的文件

Book book_add
= new
Book(AddBook.this.getNumber(),AddBook.this.getName(),AddBook.this.getAuthor(),AddBook.this.getPress(),AddBook.this.getCount());

addBook(
book_add);

}

});

//取消键

button_cancel = new
JButton("取消",new ImageIcon("cancel.png"));

button_cancel.addActionListener(new
ActionListener(){

public void
actionPerformed(ActionEvent e)

{

AddBook.this.setVisible(false);//隐藏窗体

AddBook.this.dispose();//释放窗体资源

}

});

// 将组件添加进面板

panel_north.add(label_book_class,new
GBC(0,0).setInsets(2));

panel_north.add(comBoBox,new
GBC(1,0).setInsets(2));

panel_north.add(label_number,new
GBC(0,1).setInsets(2));

panel_north.add(field_number,new
GBC(1,1).setInsets(2));

panel_north.add(label_name,new
GBC(0,2).setInsets(2));

panel_north.add(field_name,new
GBC(1,2).setInsets(2));

panel_north.add(label_author,new
GBC(0,3).setInsets(2));

panel_north.add(field_author,new
GBC(1,3).setInsets(2));

panel_north.add(label_press,new
GBC(0,4).setInsets(2));

panel_north.add(field_press,new
GBC(1,4).setInsets(2));

panel_north.add(label_count,new
GBC(0,5).setInsets(2));

panel_north.add(field_count,new
GBC(1,5).setInsets(2));

panel_south.add(button_ok);

panel_south.add(button_cancel);

}

public void addBook(Book book_add)

{

//f1表示的是分类文件夹下的各个分类文件夹（"文学","计算机"等等）

File f1
=AddBook.this.getClassName();

File file_write = new
File(f1.getPath()+"\"+"bookinfo.dat");//获取选中的分类的文件夹下
存放该类下书籍的文件

try {

//建立对该文件的文件流

FileOutputStream
fr = new FileOutputStream(file_write,true);

//用对象输出流包装该文件输出流

ObjectOutputStream
obo = new ObjectOutputStream(fr);

// 将该输入的对象写入对应分类的文本文件中

obo.writeObject(book_add);

// 关闭流

fr.close();

obo.close();

}catch(NotSerializableException
e3)

{

e3.printStackTrace();

}catch(InvalidClassException
e2)

{

e2.printStackTrace();

}

catch (IOException e1) {

System.out.println("写入异常");

e1.printStackTrace();

}

// 将该类下的书籍对象个数写入文件

File f3 = new
File(f1.getPath()+"\"+"booknum.dat");

try {

FileInputStream
fis = new FileInputStream(f3);

ObjectInputStream
oji = new ObjectInputStream(fis);

int temp_int
=oji.readInt();//该类下读出存放书籍对象个数的整数
fis.close();

oji.close();

temp_int++;//对其进行加加操作

System.out.println(temp_int);

// 将变化后的添加书籍对象个数，重新写入文件中

FileOutputStream
fos = new FileOutputStream(f3,false);

ObjectOutputStream
oos = new ObjectOutputStream(fos);

oos.writeInt(temp_int);

// 在这里需要特别特别注意！！

// oos必须先flush()才能关闭否则老报错！！

oos.flush();

fos.close();

oos.close();

} catch (FileNotFoundException
e1) {

e1.printStackTrace();

}catch (IOException e1) {

e1.printStackTrace();

}

JLabel label_result = new
JLabel("图书添加成功！！");

JOptionPane.showConfirmDialog(AddBook.this,
label_result,"图书管理系统-图书添加",
JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new
ImageIcon("succes.png"));

}

// 获取下拉列表选择的分类

public File getClassName()

{

return
(File)comBoBox.getSelectedItem();

}

// 获取输入编号

public int getNumber()

{

String num
=field_number.getText();

int number =
Integer.parseInt(num);

return number;

}

// 获取输入的书名

public String getName()

{

String name
=field_name.getText();

//判断书名是否为空，不为空返回为空弹出对话框进行提示

if(!name.isEmpty())

{

return name;

}else

{

JLabel
label_result = new JLabel("书名不可为空，请重新输入！！");

JOptionPane.showConfirmDialog(AddUserFrame.this,
label_result,"图书管理系统-添加图书", JOptionPane.WARNING_MESSAGE,JOptionPane.OK_OPTION
, new ImageIcon("result.png"));

}

}

// 获取输入的作者

public String getAuthor()

{

return
field_author.getText();

}

// 获取输入的出版社

public String getPress()

{

return
field_press.getText();

}

// 获取输入的书籍本数

public int getCount()

{

String cou =
field_count.getText();

int count =
Integer.parseInt(cou);

return
count;

}

private static final int WIDTH =
20;//文本域的宽度

private JPanel panel_north;

private JPanel panel_south;

private JLabel label_number;

private JLabel label_book_class;

private JLabel label_name;

private JLabel label_author;

private JLabel label_press;

private JLabel label_count;

private JTextField
field_number;

private JTextField field_name;

private JTextField field_author;

private JTextField field_press;

private JTextField field_count;

private File[] file_class;

private JComboBox comBoBox;

private JButton button_ok;

private JButton button_cancel;

}