我在使用 Spring Security 时遇到了一些奇怪的问题。当我尝试启动我的 tomcat 服务器时，会引发以下异常：
Couldn't locate: org.springframework.ldap.core.support.BaseLdapPathContextSource. If you are using LDAP with Spring Security, please ensure that you include the spring-ldap jar file in your application;
我的 Maven 依赖项中几乎包含了所有 Spring 库：
spring-security-web-3.1.4.RELEASE.jar
spring-security-core-3.1.4.RELEASE.jar
spring-security-config-3.1.4.RELEASE.jar
spring-security-ldap-3.1.4.RELEASE .jar
spring-security-acl-3.1.4.RELEASE.jar
spring-security-taglibs-3.1.4.RELEASE.jar
spring-ldap-core-1.3.2.RELEASE.jar
spring-core-3.1.4.RELEASE .jar
spring-beans-3.1.4.RELEASE.jar
spring-aop-3.1.4.RELEASE.jar
spring-web-3.1.4.RELEASE.jar
spring-context-3.1.4.RELEASE.jar
spring-jdbc- 3.1.4.RELEASE.jar
spring-tx-3.1.4.RELEASE.jar
spring-asm-3.1.4.RELEASE.jar
spring-expression-3.0.7.RELEASE.jar
什么可能导致这个问题？提前致谢。