package utils;


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.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Calendar;


public class JdbcTest {




public static void main(String[] args) throws IOException {

People p = new People();
p.setName("测试");
p.setAge(10);
p.setBirthday(Calendar.getInstance().getTime());
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(p);

Connection con = null;
PreparedStatement stm = null;
ResultSet res =null;
try {

Class.forName("com.mysql.jdbc.Driver");
con  = DriverManager.getConnection("数据库url", "用户名", "密码");
stm = con.prepareStatement("insert into people (people) value(?)");
stm.setBytes(1, bos.toByteArray());
stm.executeUpdate();

stm = con.prepareStatement("select id,people from people limit 1");
res = stm.executeQuery();
while(res.next()){

System.out.println(res.getInt(1));
ByteArrayInputStream bis = new ByteArrayInputStream(res.getBytes(2));
ObjectInputStream ois = new ObjectInputStream(bis);
People pn = (People)ois.readObject();
System.out.println(pn.getName());
System.out.println(pn.getAge());
System.out.println(pn.getBirthday());
}

} catch (ClassNotFoundException e) {

e.printStackTrace();
} catch (SQLException e) {

e.printStackTrace();
}finally{

try {

res.close();
stm.close();
con.close();
} catch (SQLException e) {

e.printStackTrace();
}

}

}

}

package utils;

import java.io.Serializable;
import java.util.Date;
public class People implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private String name;
private int age;
private Date birthday;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}

MYSQL：字段设置为blob的格式即可。自己测试完全可以。