Java MyBatis 多表查询详解

public void testOne2One() {
      sqlSession sqlSession = MyBatisUtil. getSqlSession();
      // 最终返回的是一个学生的集合，但是Student里面是有一个banji对象，里面保存了这个学生对应的班级信息
       List<Student> list = sqlSession. selectList( "student.findStudentBanjiInfo");
       for (Student student : list) {
         System. out.println( student);
      }
   }
Student [id=1, name=张三, age=21,  gender=男, banji=Banji [id=1,  name=java1 807] ]
Student [id=2, name=zhangsan,  age=12, gender=男, banji=Banji  [id=1, name= java1807] ]
Student [id=4, name=王五2, age=12,  gender=男, banji=Banji [id=2,  name=java1812]]
${student.banji.id}
${student.banji.name}