pojo的序列化和反序列化

实例代码：

package com.lky.pojo;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.UnsupportedEncodingException;

import org.junit.Test;

/**
* @Title: Serializer.java
* @Package com.lky.pojo
* @Description:将数据类型T序列化和反序列化(T 类型要实现 Serializable接口)
* @author lky
* @date 2015年10月20日 上午11:38:12
* @version V1.0
 */
public class Serializer<T> {

    public byte[] ObjectToByteArray(T obj) {
        byte[] bytes = null;
        ByteArrayOutputStream baos = null;//用来缓存数据，向它的内部缓冲区写入数据，缓冲区自动增长(字节流----->字节数组)
        ObjectOutputStream oos = null;
        try {
            baos = new ByteArrayOutputStream();// 声明一个字节数组输出流
            oos = new ObjectOutputStream(baos);// 声明对象字节输出流

            oos.writeObject(obj);
            oos.flush();
            bytes = baos.toByteArray();// 转化为字节数组
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (oos != null) {
                    oos.close();
                }
                if (baos != null) {
                    baos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return bytes;
    }

    @SuppressWarnings("unchecked")
    public T ByteArrayToObject(byte[] obj) {
        T student = null;
        ByteArrayInputStream bais = null;//从字节数组中读入到字节流(字节数组------->字节流)
        ObjectInputStream ois = null;

        try {
            bais = new ByteArrayInputStream(obj);
            ois = new ObjectInputStream(bais);
            student = (T) ois.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (ois != null) {
                    ois.close();
                }
                if (bais != null) {
                    bais.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return student;
    }

    @Test
    public void testSerializer() throws UnsupportedEncodingException {
        Student student = new Student();
        student.setEmail("[email protected]");
        student.setName("lky");
        student.setPassword("lky");
//        byte[] result = new Serializer<Student>().ObjectToByteArray(student);
//        System.out.println(new Serializer<Student>().ByteArrayToObject(result).toString());
//        byte[] result = new Serializer<String>().ObjectToByteArray("lky");
//        System.out.println(new Serializer<String>().ByteArrayToObject(result).toString());

        byte[] result = new Serializer<Integer>().ObjectToByteArray(Integer.valueOf(100));
        System.out.println(new Serializer<Integer>().ByteArrayToObject(result).toString());
    }
}