解決:javax.validation.ValidationException

錯誤原因:pom缺少數據持久化依賴
解決方法:
        在pom中添加依賴:
<dependency>  
    <groupId>javax.validation</groupId>  
    <artifactId>validation-api</artifactId>  
    <version>1.1.0.Final</version>  
</dependency>  
<dependency>  
    <groupId>org.hibernate</groupId>  
    <artifactId>hibernate-validator</artifactId>  
    <version>5.2.4.Final</version>  
</dependency>