java - 错误java : cannot find symbol when building with JHipster

Question

我正在关注 JHipster 教程 https://www.youtube.com/watch?time_continue=410&v=uQqlO3IGpTU&feature=emb_title

我按照建议使用 java 11。为什么我会遇到这个错误？

import javax.validation.constraints.Email;
import javax.validation.constraints.NotBlank;

Error:(8, 36) java: cannot find symbol
  symbol:   class Email
  location: package javax.validation.constraints
Error:(9, 36) java: cannot find symbol
  symbol:   class NotBlank
  location: package javax.validation.constraints

Answer 1

错误消息似乎引用了编译器无法理解的内容。检查是否缺少某些依赖项，例如必须将包含所需类的 jar 添加到项目的构建路径中。