http://localhost:8080/swagger-ui.html의 Whitelabel Error Page

에러

---

• Swagger 적용 후 브라우저에서 http://localhost:8080/swagger-ui.html 접속하면 Whitelabel Error Page 발생

2023-04-14 19:28:50.703 DEBUG 32252 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : GET "/swagger-ui.html", parameters={}
2023-04-14 19:28:50.709 DEBUG 32252 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/], ServletContext [/]]
2023-04-14 19:28:50.714 DEBUG 32252 --- [nio-8080-exec-1] o.s.w.s.r.ResourceHttpRequestHandler     : Resource not found
2023-04-14 19:28:50.714 DEBUG 32252 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2023-04-14 19:28:50.718 DEBUG 32252 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}
2023-04-14 19:28:50.719 DEBUG 32252 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2023-04-14 19:28:50.742 DEBUG 32252 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, text/html;q=0.8]
2023-04-14 19:28:50.746 DEBUG 32252 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 404

• build.gradle

dependencies {
	implementation 'io.springfox:springfox-swagger-ui:3.0.0'
	implementation 'io.springfox:springfox-swagger2:3.0.0'
}

 

해결방법

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• http://localhost:8080/v2/api-docs → 정상적으로 작동

• http://localhost:8080/swagger-resources → 정상적으로 작동

 

• build.gradle에 아래 코드 추가

implementation 'io.springfox:springfox-boot-starter:3.0.0'

• http://localhost:8080/swagger-ui/index.html 접속

• Swagger이 3.0.0을 사용하면 URL 주소가 이전에 사용하던 http://localhost:8080/swagger-ui.html와 다르고, build.gradle에도 다른 dependency를 추가해야 한다.

 

참고 사이트

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• https://stackoverflow.com/questions/50618350/swagger-with-spring-boot-2-0-leads-to-404-error-page
• https://stackoverflow.com/questions/46151540/added-springfox-swagger-ui-and-its-not-working-what-am-i-missing/64333853#64333853