mybatis中的多条件查询

使用Map集合和索引号

接口：

/** * 多条件查询Map集合 * @param map * @return */public List<Student> findByManyCondition(Map<String,Object> map);

/** * 多参数查询使用索引 * @param name * @param age * @return */public List<Student> findStudentByCondition(String name,int age);

xml文件（小配置）

<!--多条件查询Map集合--><select id="findByManyCondition" resultType="student">   SELECT  *from Student WHERE  name LIKE ‘%‘ #{name } ‘%‘ AND age>#{age}</select>

<!--多参数查询使用索引--><select id="findStudentByCondition" resultType="student">    SELECT  *from Student WHERE  name LIKE ‘%‘ #{0} ‘%‘ AND age>#{1}</select>

测试类

/** * 多条件查询Map集合 */@Testpublic  void findByManyCondition(){    SqlSession session = MyBatisUtil.getSession();    IStudentDAO mapper = session.getMapper(IStudentDAO.class);   Map<String,Object>  map=new HashMap<String,Object>();    map.put("name","张");    map.put("age",20);    List<Student> list = mapper.findByManyCondition(map);    for (Student item:list){        System.out.println(item.getName());    }    session.commit();    session.close();}

/** * 多条件查询使用索引号 */@Testpublic  void findStudentByCondition(){    SqlSession session = MyBatisUtil.getSession();    IStudentDAO mapper = session.getMapper(IStudentDAO.class);    List<Student> list = mapper.findStudentByCondition("张", 20);    for (Student item:list){        System.out.println(item.getName());    }    session.commit();    session.close();}