现在我需要一些序列化我的arraylist的帮助。现在我已经设法使序列化方面起作用（至少我认为），现在我的问题在于反序列化对象。我正在制作一个小型的地址簿程序。我有一个comboBox，用于存储用户输入的三个文本框的地址：姓名，地址和电话号码。出于测试目的，我有一个保存和加载按钮。保存按钮保存联系人，加载按钮加载以前的会话联系人。现在除了反序列化之外的一切都有效，我想知道如何继续它。
我的代码如下：
import java.awt.EventQueue;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
public class Address_Book {
private JFrame frame;
private JTextField newName;
private JTextField newAddress;
private JTextField newPhoneAddress;
ArrayList<Book> test = new ArrayList<Book>();
ArrayList<Book> array = new ArrayList<Book>();
File addBook = new File("addBook.txt");
final JComboBox<String> comboBox = new JComboBox<String>();
final DefaultComboBoxModel<String> model = new DefaultComboBoxModel<String>();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Address_Book window = new Address_Book();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public Address_Book() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 250);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
newName = new JTextField();
newName.setBounds(10, 29, 107, 20);
frame.getContentPane().add(newName);
newName.setColumns(10);
JLabel lbl1 = new JLabel("Enter New Name:");
lbl1.setBounds(10, 11, 107, 14);
frame.getContentPane().add(lbl1);
JLabel lbl2 = new JLabel("Enter New Address:");
lbl2.setBounds(136, 11, 130, 14);
frame.getContentPane().add(lbl2);
newAddress = new JTextField();
newAddress.setColumns(10);
newAddress.setBounds(136, 29, 107, 20);
frame.getContentPane().add(newAddress);
newPhoneAddress = new JTextField();
newPhoneAddress.setColumns(10);
newPhoneAddress.setBounds(262, 29, 162, 20);
frame.getContentPane().add(newPhoneAddress);
JLabel lbl3 = new JLabel("Enter New Phone number:");
lbl3.setBounds(262, 11, 162, 14);
frame.getContentPane().add(lbl3);
JButton btnAddNewContact = new JButton("Add new contact");
btnAddNewContact.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent arg0) {
test.add((new Book(newName.getText(), newAddress.getText(), newPhoneAddress.getText())));
//mergesort.mergesort(test, 0, test.size() - 1);
model.removeAllElements();
for(int i=0; i < test.size();i++){
model.addElement(test.get(i).getContact());
}
comboBox.setModel(model);
newName.setText("");
newAddress.setText("");
newPhoneAddress.setText("");
}
});
btnAddNewContact.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnAddNewContact.setBounds(10, 53, 414, 23);
frame.getContentPane().add(btnAddNewContact);
JLabel lbl4 = new JLabel("Current Contacts:");
lbl4.setBounds(10, 87, 107, 14);
frame.getContentPane().add(lbl4);
frame.getContentPane().add(comboBox);
comboBox.setModel(model);
comboBox.setBounds(10, 101, 414, 20);
comboBox.setSelectedIndex(test.size()-1);
JButton btnLoad = new JButton("Load");
btnLoad.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
try {
/* Read objects */
FileInputStream in = new FileInputStream(addBook);
ObjectInputStream readIn = new ObjectInputStream(in);
array = (ArrayList<Book>) readIn.readObject();
readIn.close();
for(int i=0; i < array.size();i++){
model.addElement(array.get(i).getContact());
}
comboBox.setModel(model);
}catch(Exception e1){
e1.printStackTrace();
}
}
});
btnLoad.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnLoad.setBounds(10, 132, 89, 23);
frame.getContentPane().add(btnLoad);
JButton btnSave = new JButton("Save");
btnSave.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent arg0) {
/* write objects */
try{
FileOutputStream out = new FileOutputStream(addBook);
ObjectOutputStream writeAdd = new ObjectOutputStream(out);
writeAdd.writeObject(test);
writeAdd.close();
}catch(Exception e){
}
}
});
btnSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnSave.setBounds(109, 132, 89, 23);
frame.getContentPane().add(btnSave);
}
}
这是我的目标：
public class Book implements Comparable {
private String flName, Address, pNumber;
public Book(String Name, String address, String phoneNumber ){
setFlName(Name);
setAddress(address);
setpNumber(phoneNumber);
}
public String getpNumber() {
return pNumber;
}
public void setpNumber(String pNumber) {
this.pNumber = pNumber;
}
public String getAddress() {
return Address;
}
public void setAddress(String address) {
Address = address;
}
public String getFlName() {
return flName;
}
public void setFlName(String flName) {
this.flName = flName;
}
public String getContact() {
return flName + ", " + Address + ", " + pNumber;
}
public int compareTo(Object c) {
Book testBook = (Book)c;
if (testBook.getFlName().compareTo(this.getFlName()) < 0){
return(-1);
}else if(testBook.getFlName().compareTo(this.getFlName()) == 0){
return(0);
}else{
return(1);
}
}
}
下一个代码的splotch在我的Address_Book类中，这是我给你的第一个代码，这只是为了让我更容易找到我从哪里加载它。
JButton btnLoad = new JButton("Load");
btnLoad.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
try {
/* Read objects */
FileInputStream in = new FileInputStream(addBook);
ObjectInputStream readIn = new ObjectInputStream(in);
array = (ArrayList<Book>) readIn.readObject();
readIn.close();
for(int i=0; i < array.size();i++){
model.addElement(array.get(i).getContact());
}
comboBox.setModel(model);
}catch(Exception e1){
e1.printStackTrace();
}
}
});
btnLoad.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnLoad.setBounds(10, 132, 89, 23);
frame.getContentPane().add(btnLoad);
感谢您的时间，如果您有任何疑问请不要犹豫。 ：）
答案 0 :(得分：1)
ArrayList<Book>失败的主要原因。