序列化和反序列化，使用commons-io 包

package com.qing.qing.test;

import com.qing.qing.entity.CertBdcInfo;
import org.apache.commons.io.FileUtils;

import java.io.*;
import java.text.ParseException;

public class Test {
    public static void main(String[] args) throws ParseException {
        try {
            CertBdcInfo bdcInfo = null;
            //序列化 实体类需实现序列化接口java.io.Serializable

            bdcInfo = new CertBdcInfo();
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
            objectOutputStream.writeObject(bdcInfo);
            FileUtils.writeByteArrayToFile(new File("D:\ytzz\copy\bdcInfo"),byteArrayOutputStream.toByteArray());

            //反序列化
            byte[] byteArray = FileUtils.readFileToByteArray(new File("D:\ytzz\copy\bdcInfo"));
            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(byteArray));
            bdcInfo = (CertBdcInfo) in.readObject();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }
}