学习mybatis3遇到关于integer的怪事

计算机编程是最讲究逻辑的事情，却遇到不可理喻的怪象！

改为int就可以了

package com.java.service;

import org.apache.ibatis.session.SqlSession; 
import com.java.mappers.StudentMapper;
import com.java.model.Student;
import com.java.util.SqlSessionFactoryUtil;

public class StudnetTest {
	public static void main(String[] args) {
		SqlSession sqlSession=SqlSessionFactoryUtil.openSession();
		StudentMapper studentMapper=(StudentMapper) sqlSession.getMapper(StudentMapper.class);
		Student student=new Student("上秀",11);
		int result=studentMapper.add(student);
		sqlSession.commit();
		if(result>0){
			System.out.println("添加成功！");
		}else{
			System.out.println("添加失败");
		}
	}
}