我正在制作 Vaadin 教程系列。
https://www.youtube.com/watch?v=k-DxZ1reIdM&list=PLcRrh9hGNallPtT2VbUAsrWqvkQ-XE22h&index=11
我正在尝试使用 Binding,但我的终端中出现以下错误:
2020-11-22 09:11:11.012 INFO 38103 --- [nio-8080-exec-2] c.vaadin.flow.spring.SpringInstantiator : The number of beans implementing 'I18NProvider' is 0. Cannot use Spring beans for I18N, falling back to the default behavior
2020-11-22 09:11:11.373 INFO 38103 --- [nio-8080-exec-2] com.vaadin.validator.BeanValidator : A JSR-303 bean validation implementation not found on the classpath or could not be initialized. BeanValidator cannot be used.
更多内容如下:
Unable to create a Configuration, because no Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.
如何添加 Bean Validation 提供商?我正在使用 vaadin 作为 Maven 项目,与教程中相同。
通过添加以下依赖解决
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
添加整个
spring-boot-starter-validation
有点矫枉过正了。
您可以简单地添加 hibernate 验证器,它将向您的项目添加最少量的库:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>yourHibernateVersion</version>
</dependency>
此方法是 Vaadin 本身建议的,您可以在 here
看到