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(1) 首先是java自己内部实现的对象序列化机制 其实就是ObjectInputStream 和 ObjectOutputStream
首先实现一个实体对象 记住必须实现Serializable 接口
package com.rpc;
import java.io.Serializable;
public class Student implements Serializable{
private static final long serialVersionUID = 5915058853403173212L;
private String id;
private String name;
private String sex;
private int age;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
然后是将对象以文件的形式保存
package com.rpc;
import java.io.File;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
public class ObjectChuanshu {
public static void main(String[] args) {
Student student = new Student();
student.setAge(23);
student.setId("123");
student.setName("张三");
student.setSex("男");
FileOutputStream fout = null;
ObjectOutputStream oos = null;
try{
fout = new FileOutputStream(new File("d:/1.object"));
oos = new ObjectOutputStream(fout);
oos.writeObject(student);
oos.flush();
fout.flush();
}catch(Exception e){
System.out.println(e.getMessage());
e.printStackTrace();
}finally{
try{
oos.close();
fout.close();
}catch(Exception e){}
}
}
}
然后是从文件中读出对象
package com.rpc;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
public class ReadObject {
public static void main(String[] args) {
FileInputStream fin = null;
ObjectInputStream ois = null;
try{
fin = new FileInputStream(new File("d:/1.object"));
ois = new ObjectInputStream(fin);
Student student = (Student)ois.readObject();
System.out.println(student.getName());
}catch(Exception e){
System.out.println(e.getMessage());
e.printStackTrace();
}finally{
try{
fin.close();
ois.close();
}catch(Exception e){}
}
}
}
输出结果
张三
Hessian 的对象 序列化 需要添加 hessian.jar
package com.rpc;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import com.caucho.hessian.io.Hessian2Input;
import com.caucho.hessian.io.Hessian2Output;
public class HessianObject {
private String filePath;
public HessianObject(String filePath){
this.filePath = filePath;
}
/**
* 将对象保存到指定的文件中
* @param filePath
* @throws Exception
*/
public byte[] writeObject(Student student) throws Exception{
Hessian2Output hout = null;
ByteArrayOutputStream baos = null;
try{
baos = new ByteArrayOutputStream();
hout = new Hessian2Output(baos);
hout.writeObject(student);
hout.flush();
}catch(Exception e){
throw e;
}finally{
}
return baos.toByteArray();
}
/**
* 读取文件中的对象
* @param filePath
* @throws Exception
*/
public Student readObject(byte[] buffer)throws Exception{
Hessian2Input hin = null;
Student student = null;
ByteArrayInputStream bais = null;
try{
bais = new ByteArrayInputStream(buffer);
hin = new Hessian2Input(bais);
student = (Student)hin.readObject();
}catch(Exception e){
throw e;
}finally{
}
return student;
}
public static void main(String[] args) {
HessianObject hessianObject = new HessianObject("d:/2.object");
Student student = new Student();
student.setAge(18);
student.setId("12345");
student.setName("李四");
student.setSex("女");
try{
byte[] buffer = hessianObject.writeObject(student);
Student s = hessianObject.readObject(buffer);
System.out.println(s.getName());
}catch(Exception e){
System.out.println(e.getMessage());
e.printStackTrace();
}
}
}
输出结果
李四
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原文地址：http://www.cnblogs.com/dbqjava/p/5905779.html
