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");}}}