1 import java.io.Serializable;
 2 
 3 /**
 4 * <p>ClassName: Person<p>
 5 * <p>Description:测试对象序列化和反序列化<p>
 6 * @author xudp
 7 * @version 1.0 V
 8 * @createTime 2014-6-9 下午02:33:25
 9 */
10 public class Person implements Serializable {
11 
12   /**
13   * 序列化ID
14   */
15   private static final long serialVersionUID = -5809782578272943999L;
16   private int age;
17   private String name;
18   private String sex;
19 
20   public int getAge() {
21     return age;
22   }
23 
24   public String getName() {
25     return name;
26   }
27 
28   public String getSex() {
29     return sex;
30   }
31 
32   public void setAge(int age) {
33     this.age = age;
34   }
35 
36   public void setName(String name) {
37     this.name = name;
38   }
39 
40   public void setSex(String sex) {
41     this.sex = sex;
42   }
43 }

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;
import java.text.MessageFormat;

/**
 * <p>ClassName: TestObjSerializeAndDeserialize<p>
 * <p>Description: 测试对象的序列化和反序列<p>
 * @author xudp
 * @version 1.0 V
 * @createTime 2014-6-9 下午03:17:25
 */
public class TestObjSerializeAndDeserialize {

  public static void main(String[] args) throws Exception {
    SerializePerson();//序列化Person对象
    Person p = DeserializePerson();//反序列Perons对象
    System.out.println(MessageFormat.format("name={0},age={1},sex={2}",
                         p.getName(), p.getAge(), p.getSex()));
  }
  
  /**
   * MethodName: SerializePerson 
   * Description: 序列化Person对象
   * @author xudp
   * @throws FileNotFoundException
   * @throws IOException
   */
  private static void SerializePerson() throws FileNotFoundException,
      IOException {
    Person person = new Person();
    person.setName("gacl");
    person.setAge(25);
    person.setSex("男");
    // ObjectOutputStream 对象输出流，将Person对象存储到E盘的Person.txt文件中，完成对Person对象的序列化操作
    ObjectOutputStream oo = new ObjectOutputStream(new FileOutputStream(
        new File("E:/Person.txt")));
    oo.writeObject(person);
    System.out.println("Person对象序列化成功！");
    oo.close();
  }

  /**
   * MethodName: DeserializePerson 
   * Description: 反序列Perons对象
   * @author xudp
   * @return
   * @throws Exception
   * @throws IOException
   */
  private static Person DeserializePerson() throws Exception, IOException {
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
        new File("E:/Person.txt")));
    Person person = (Person) ois.readObject();
    System.out.println("Person对象反序列化成功！");
    return person;
  }

}

 1 import java.io.File;
 2 import java.io.FileInputStream;
 3 import java.io.FileNotFoundException;
 4 import java.io.FileOutputStream;
 5 import java.io.IOException;
 6 import java.io.ObjectInputStream;
 7 import java.io.ObjectOutputStream;
 8 import java.io.Serializable;
 9 
10 public class TestSerialversionUID {
11 
12   public static void main(String[] args) throws Exception {
13     SerializeCustomer();// 序列化Customer对象
14     Customer customer = DeserializeCustomer();// 反序列Customer对象
15     System.out.println(customer);
16   }
17 
18   /**
19   * MethodName: SerializeCustomer 
20   * Description: 序列化Customer对象
21   * @author xudp
22   * @throws FileNotFoundException
23   * @throws IOException
24   */
25   private static void SerializeCustomer() throws FileNotFoundException,
26       IOException {
27     Customer customer = new Customer("gacl",25);
28     // ObjectOutputStream 对象输出流
29     ObjectOutputStream oo = new ObjectOutputStream(new FileOutputStream(
30         new File("E:/Customer.txt")));
31     oo.writeObject(customer);
32     System.out.println("Customer对象序列化成功！");
33     oo.close();
34   }
35 
36   /**
37   * MethodName: DeserializeCustomer 
38   * Description: 反序列Customer对象
39   * @author xudp
40   * @return
41   * @throws Exception
42   * @throws IOException
43   */
44   private static Customer DeserializeCustomer() throws Exception, IOException {
45     ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
46         new File("E:/Customer.txt")));
47     Customer customer = (Customer) ois.readObject();
48     System.out.println("Customer对象反序列化成功！");
49     return customer;
50   }
51 }
52 
53 /**
54 * <p>ClassName: Customer<p>
55 * <p>Description: Customer实现了Serializable接口，可以被序列化<p>
56 * @author xudp
57 * @version 1.0 V
58 * @createTime 2014-6-9 下午04:20:17
59 */
60 class Customer implements Serializable {
61   //Customer类中没有定义serialVersionUID
62   private String name;
63   private int age;
64 
65   public Customer(String name, int age) {
66     this.name = name;
67     this.age = age;
68   }
69 
70   /*
71   * @MethodName toString
72   * @Description 重写Object类的toString()方法
73   * @author xudp
74   * @return string
75   * @see java.lang.Object#toString()
76   */
77   @Override
78   public String toString() {
79     return "name=" + name + ", age=" + age;
80   }
81 }

 1 class Customer implements Serializable {
 2   //Customer类中没有定义serialVersionUID
 3   private String name;
 4   private int age;
 5 
 6   //新添加的sex属性
 7   private String sex;
 8   
 9   public Customer(String name, int age) {
10     this.name = name;
11     this.age = age;
12   }
13   
14   public Customer(String name, int age,String sex) {
15     this.name = name;
16     this.age = age;
17     this.sex = sex;
18   }
19 
20   /*
21   * @MethodName toString
22   * @Description 重写Object类的toString()方法
23   * @author xudp
24   * @return string
25   * @see java.lang.Object#toString()
26   */
27   @Override
28   public String toString() {
29     return "name=" + name + ", age=" + age;
30   }
31 }

1 Exception in thread "main" java.io.InvalidClassException: Customer; 
2 local class incompatible: 
3 stream classdesc serialVersionUID = -88175599799432325, 
4 local class serialVersionUID = -5182532647273106745

class Customer implements Serializable {
  /**
   * Customer类中定义的serialVersionUID(序列化版本号)
   */
  private static final long serialVersionUID = -5182532647273106745L;
  private String name;
  private int age;

  //新添加的sex属性
  //private String sex;
  
  public Customer(String name, int age) {
    this.name = name;
    this.age = age;
  }
  
  /*public Customer(String name, int age,String sex) {
    this.name = name;
    this.age = age;
    this.sex = sex;
  }*/

  /*
   * @MethodName toString
   * @Description 重写Object类的toString()方法
   * @author xudp
   * @return string
   * @see java.lang.Object#toString()
   */
  @Override
  public String toString() {
    return "name=" + name + ", age=" + age;
  }
}

class Customer implements Serializable {
  /**
   * Customer类中定义的serialVersionUID(序列化版本号)
   */
  private static final long serialVersionUID = -5182532647273106745L;
  private String name;
  private int age;

  //新添加的sex属性
  private String sex;
  
  public Customer(String name, int age) {
    this.name = name;
    this.age = age;
  }
  
  public Customer(String name, int age,String sex) {
    this.name = name;
    this.age = age;
    this.sex = sex;
  }

  /*
   * @MethodName toString
   * @Description 重写Object类的toString()方法
   * @author xudp
   * @return string
   * @see java.lang.Object#toString()
   */
  @Override
  public String toString() {
    return "name=" + name + ", age=" + age;
  }
}