Java原生序列化和反序列化代码实例

这篇文章主要介绍了Java原生序列化和反序列化代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

写一个Java原生的序列化和反序列化的DEMO。

需序列化的类：

package com.nicchagil.nativeserialize;

import java.io.Serializable;

public class User implements Serializable {

private static final long serialVersionUID = 1L;

private Integer id;
 private String userName;

public User(Integer id, String userName) {
   super();
   this.id = id;
   this.userName = userName;
 }

public Integer getId() {
   return id;
 }

public void setId(Integer id) {
   this.id = id;
 }

public String getUserName() {
   return userName;
 }

public void setUserName(String userName) {
   this.userName = userName;
 }

public static long getSerialversionuid() {
   return serialVersionUID;
 }

@Override
 public int hashCode() {
   final int prime = 31;
   int result = 1;
   result = prime * result + ((id == null) ? 0 : id.hashCode());
   result = prime * result
       + ((userName == null) ? 0 : userName.hashCode());
   return result;
 }

@Override
 public boolean equals(Object obj) {
   if (this == obj)
     return true;
   if (obj == null)
     return false;
   if (getClass() != obj.getClass())
     return false;
   User other = (User) obj;
   if (id == null) {
     if (other.id != null)
       return false;
   } else if (!id.equals(other.id))
     return false;
   if (userName == null) {
     if (other.userName != null)
       return false;
   } else if (!userName.equals(other.userName))
     return false;
   return true;
 }

@Override
 public String toString() {
   return "User [id=" + id + ", userName=" + userName + "]";
 }

}

工具类：

package com.nicchagil.nativeserialize;

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.io.Serializable;

public class NativeSerializeTools {

/**
  * 序列化
  * @param filePath 序列化的路径
  * @param s 序列化的对象
  */
 public static void write(String filePath, Serializable s) throws FileNotFoundException, IOException {
   if (filePath == null || filePath.length() == 0) {
     throw new RuntimeException("请传入序列化路径");
   }

if (s == null) {
     throw new RuntimeException("请传入序列化对象");
   }

File f = new File(filePath);

ObjectOutputStream oos = null;
   FileOutputStream fos = null;
   try {
     fos = new FileOutputStream(f);
     oos = new ObjectOutputStream(fos);
     oos.writeObject(s);
     System.out.println("finish.");
   } finally {
     if (oos != null) {
       oos.close();
     }
     if (fos != null) {
       fos.close();
     }
     System.out.println("close the resource.");
   }
 }

/**
  * 反序列化
  * @param filePath 反序列化的路径
  * @return 反序列化的对象
  */
 public static Object read(String filePath) throws ClassNotFoundException, FileNotFoundException, IOException {
   if (filePath == null || filePath.length() == 0) {
     throw new RuntimeException("请传入反序列化路径");
   }

File f = new File(filePath);

ObjectInputStream ois = null;
   FileInputStream fis = null;
   Object o = null;
   try {
     fis = new FileInputStream(f);
     ois = new ObjectInputStream(fis);
     o = ois.readObject();
     System.out.println("finish.");
   } finally {
     if (ois != null) {
       ois.close();
     }
     if (fis != null) {
       fis.close();
     }
     System.out.println("close the resource.");
   }

return o;
 }

}

测试类：

package com.nicchagil.nativeserialize;

import java.io.FileNotFoundException;
import java.io.IOException;

import org.junit.Assert;
import org.junit.Test;

public class HowToUse {

private User user = new User(100, "Nick Huang");
 private String filePath = "d:/user.txt";

@Test
 public void c1() throws FileNotFoundException, IOException {
   NativeSerializeTools.write(filePath, user);
 }

@Test
 public void c2() throws FileNotFoundException, IOException, ClassNotFoundException {
   Object o = NativeSerializeTools.read(filePath);

System.out.println(o);
   Assert.assertTrue(user.equals(o));
 }

}

日志：

finish.
close the resource.
finish.
close the resource.
User [id=100, userName=Nick Huang]

来源：https://www.cnblogs.com/nick-huang/p/5674785.html