Mysql存储二进制对象数据问题

import Java.io.*;
 

public class BlobUtil {
 
    
    public static byte[] setObject(Object object) {
        ByteArrayOutputStream baos = null;
        ObjectOutputStream out = null;
        try {
            baos = new ByteArrayOutputStream();
            out = new ObjectOutputStream(baos);
            out.writeObject(object);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (baos != null) {
                try {
                    baos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return baos.toByteArray();
    }
 
    
    public static Object getObject(byte[] bytes) {
        Object obj = null;
        ByteArrayInputStream bais = null;
        ObjectInputStream in = null;
        try {
            bais = new ByteArrayInputStream(bytes);
            in = new ObjectInputStream(bais);
            obj = in.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (bais != null) {
                try {
                    bais.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return obj;
    }
}

import java.io.Serializable;
 

public class UserVO implements Serializable {
 
    private static final long serialVersionUID = 1L;
 
    private String userId;
 
    private String userName;
 
    private String passWord;
 
    public String getUserId() {
        return userId;
    }
 
    public void setUserId(String userId) {
        this.userId = userId;
    }
 
    public String getUserName() {
        return userName;
    }
 
    public void setUserName(String userName) {
        this.userName = userName;
    }
 
    public String getPassword() {
        return password;
    }
 
    public void setPassword(String password) {
        this.password = password;
    }
}

public class TestMain {
 
    public static void main(String[] args) {
        UserVO user = new UserVO();
        user.setUserId("123456");
        user.setUserName("张三");
        byte[] dataValue = BlobUtil.setObject(user);
        System.out.println("=====对象转换成blob类型数据====="+Arrays.toString(dataValue));
        UserVO userVO = (UserVO) BlobUtil.getObject(dataValue);
        System.out.println("=====blob类型数据转换成对象====="+ JSONObject.tojsONString(userVO));
    }
}