java – Spring安全警告：类AuthorityUtils是抽象的吗？

确切的警告是：

类’org.springframework.security.core.authority.AuthorityUtils’是抽象的

这是Spring文件的标题：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:springsecurity="http://www.springframework.org/schema/security"
    xmlns:jaxrs="http://cxf.apache.org/jaxrs" xmlns:cxf="http://cxf.apache.org/core"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.1.xsd
        http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.2.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
        http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">

配置的违规部分如下(意味着如果我删除此部分,则错误消失.具体来说,如果我删除springsecurity：authentication-provider节：

<springsecurity:authentication-manager alias="authenticationManager">
    <springsecurity:authentication-provider>
        <springsecurity:user-service>
            <springsecurity:user name="john" password="john"
                authorities="ROLE_USER" />
            <springsecurity:user name="admin" password="admin"
                authorities="ROLE_USER,ROLE_ADMIN" />
            <springsecurity:user name="guest" password="guest"
                authorities="ROLE_GUEST" />
        </springsecurity:user-service>
    </springsecurity:authentication-provider>
</springsecurity:authentication-manager>

关于这个根本原因的任何想法？我们的项目没有提出虚假警告,我不想禁用Spring bean验证.