将转换哈希映射更改为映射时出错

Question

我是Spring MVC的新手，想看看我是否可以在这里得到一点建议。当我从HashMap更改为Map时，我看到错误。谢谢你的任何建议。

FROM:
HashMap<String, Object> schoolTeacherMap = (HashMap<String, Object>) teachersService.allSchoolTeachersget();
TO:    
Map<String, Object> schoolTeacherMap = (Map<String, Object>) teachersService.allSchoolTeachersget();

Answer 1

谢谢大家。我想通了。我改成了

Map<String, Object> schoolTeacherMap =

和左边的右边，它奏效了。