gateway 异常

ClassNotFoundException: javax.validation.ValidationException

 

三、问题

nested exception is java.lang.NoClassDefFoundError: javax/validation/ValidationException

原因：项目中没有引用 spring-boot-starter-validation 包

As of #19550, 
Web and WebFlux starters do not depend on the validation starter by default anymore. 
If your application is using validation features, you’ll need to manually add back a dependency on spring-boot-starter-validation in your build file.

解决方案：

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