表结构如下

package entity;

import java.io.Serializable;

public class Person implements Serializable{

private int id;

private String name;

private String sex;

private int age;

private Person soulMate;

public int getId() {

return id;

}

public void setId(int 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;

}

public Person getSoulMate() {

return soulMate;

}

public void setSoulMate(Person soulMate) {

this.soulMate = soulMate;

}

@Override

public String toString() {

return "Person[" + "id=" + id + " ,name=" + name + " ,sex=" + sex + " ,age=" + age + "]";

}

}

上面的是实现了序列化的一个对象，我要将其写入到数据库中去。

具体的操作代码如下：

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.SQLException;

import entity.Person;

import util.DBUtil;

public class Main {

public static void main(String[] args) {

Person boy = new Person();

boy.setId(10);

boy.setName("litten");

boy.setAge(22);

boy.setSex("男");

Person girl = new Person();

girl.setId(11);

girl.setName("litten's soul mate");

girl.setAge(21);

girl.setSex("女");

ByteArrayOutputStream baos = new ByteArrayOutputStream();

ObjectOutputStream oos;

try {

oos = new ObjectOutputStream(baos);

oos.writeObject(boy);

ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

Connection conn = DBUtil.getConn();

PreparedStatement ps = conn.prepareStatement("insert into testBlob (id, blob) values(?,?)");

ps.setInt(1, 2);

ps.setBlob(2, bais, bais.available());

System.out.println(ps.executeUpdate());

} catch (IOException | ClassNotFoundException | SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

但是却报错了？ 不知道是为什么？求教。