<dependency>
????<groupId>org.springframework.boot</groupId>
????<artifactId>spring-boot-starter-validation</artifactId>
</dependency>

使用這個(gè)依賴，不要用

<dependency>
????<groupId>javax.validation</groupId>
????<artifactId>validation-api</artifactId>
</dependency>

此依賴無效