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======================================Emoloyee实体类 package JavaHeigth.serializableTest; import java.io.Serializable; public class Employee implements Serializable{ private static final long serialVersionUID = 3593458869057048152L; public String name ; public String address; public [color=red]transient [/color]int SSN; //不可序列化状态 瞬态 public int number; public void mailCheck(){ System.out.println("Mailing a check to " +name +" "+address ); } } ======================================序列化 package JavaHeigth.serializableTest; import java.io.FileOutputStream; import java.io.ObjectOutputStream; public class SerializeDemo { public static void main(String[] args) { Employee e = new Employee(); e.name="kaige"; e.address="北京海淀"; e.SSN=112233; e.number=101; try { FileOutputStream fos = new FileOutputStream("f://employee.ser"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(e); oos.close(); fos.close(); System.out.println("序列化保存在f://employee.ser中"); } catch (Exception e2) { // TODO: handle exception System.out.println("异常"); e2.printStackTrace(); } } } =============================反序列化 package JavaHeigth.serializableTest; import java.io.FileInputStream; import java.io.IOException; import java.io.ObjectInputStream; public class DeserializeDemo { public static void main(String [] args) { Employee e = null; try { FileInputStream fileIn = new FileInputStream("f://employee.ser"); ObjectInputStream in = new ObjectInputStream(fileIn); e = (Employee) in.readObject(); in.close(); fileIn.close(); }catch(IOException i) { i.printStackTrace(); return; }catch(ClassNotFoundException c) { System.out.println("Employee class not found"); c.printStackTrace(); return; } System.out.println("Deserialized Employee..."); System.out.println("Name: " + e.name); System.out.println("Address: " + e.address); System.out.println("SSN: " + e.SSN); System.out.println("Number: " + e.number); } } [color=red]SSN=0；原因是transient 变量不能被序列化[/color]

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