关于序列化静态属性的问题 - 黑马程序员技术交流社区

import java.io.Serializable;
//这个类必须是实现了可序列化接口的
public class Fruit implements Serializable{
//自定义一个固定的序列化版本号
public static final long serialVersionUID = 30L;
private String apple;
private String orange;
private String watermelon;
private static String banana;
//constructor
public Fruit(String apple,String orange,String watermelon,String banana){
this.apple = apple;
this.orange = orange;
this.watermelon = watermelon;
this.banana = banana;
}
public String getBanana() {
return banana;
}
public void setBanana(String banana) {
this.banana = banana;
}
//setter and getter
public String getApple() {
return apple;
}
public void setApple(String apple) {
this.apple = apple;
}
public String getOrange() {
return orange;
}
public void setOrange(String orange) {
this.orange = orange;
}
public String getWatermelon() {
return watermelon;
}
public void setWatermelon(String watermelon) {
this.watermelon = watermelon;
}
}

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import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* 示例：目的是对堆内存中的对象进行持久化存储
* 因为是对对象进行操作，所以咱们采用对象流
* 源和目标都是文件，所以对象流包装文件输入输出流
* @author lt
*/
public class ObjectStreamDemo {
//序列化方法
public static void toSerial(Object obj,File saveFile) throws FileNotFoundException,IOException{
ObjectOutputStream oos = null;
oos = new ObjectOutputStream(new FileOutputStream(saveFile));
oos.writeObject(obj);
}
//反序列化方法
public static Object fromSerial(File saveFile) throws FileNotFoundException,IOException, ClassNotFoundException{
ObjectInputStream ois = null;
ois = new ObjectInputStream(new FileInputStream(saveFile));
Object getObj = ois.readObject();
return getObj;
}
public static void main(String[] args) {
Fruit fruit = new Fruit("苹果","橘子","西瓜","香蕉");
File file = new File("d://serial.txt");
if(file.exists()){
try {
// toSerial(fruit,file);
Fruit getFruit = (Fruit)fromSerial(file);
System.out.println(getFruit.getApple() + "---" +
getFruit.getOrange() + "---" +
getFruit.getWatermelon() + "---" +
getFruit.getBanana());
} catch (FileNotFoundException e) {
System.out.println("无法再当前路径下创建文件！");
} catch (IOException e) {
System.out.println("对象流操作的文件不存在！");
} catch (ClassNotFoundException e) {
System.out.println("序列化文件未找到！");
}
}else{
try {
file.createNewFile();
} catch (IOException e) {
System.out.println("serial.txt创建失败！");
}
}
}
}

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