Could not resolve XML entity [http://www.springframework.org/schema/security/spring-security.xsd] through URL [https://www.springframework.org/schema/security/spring-security.xsd] (Spring 5.2)

Spring Framework 5.2 는 context 에 url 이 http가 아니라 https (ssl)로 시작된다.

spring-security-config.jar/META-INF/spring-schemas에 정의됨(이전 버전들은 spring-context.jar 에 정의됨)

xmlns:security="http://www.springframework.org/schema/security" 을 사용하기 위해서는 아래와 같이 정의해야 함.

http://www.springframework.org/schema/security  https://www.springframework.org/schema/security/spring-security.xsdhttps://www.springframework.org/schema/security/spring-security.xsd]