JSP Failed to load OOO: Response to preflight request doesn't pass access control check: No 'Access-Co

[운영자]

Failed to load OOO: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'OOO' is therefore not allowed access.

web.xml에 아래 내용을 추가하고 JSP페이지에서 Access-Control-Allow-Origin 헤더 세팅하는 부분은 없앤 후, 톰캣 재가동 후 시도해 보자.

<filter>

  <filter-name>CorsFilter</filter-name>

  <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>

  <init-param>

    <param-name>cors.allowed.origins</param-name>

    <param-value>*</param-value>

  </init-param>

  <init-param>

    <param-name>cors.allowed.methods</param-name>

    <param-value>GET,POST,PUT</param-value>

  </init-param>

  <init-param>

    <param-name>cors.allowed.headers</param-name>

    <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers</param-value>

  </init-param>

  <init-param>

    <param-name>cors.exposed.headers</param-name>

    <param-value>*</param-value>

  </init-param>

  <init-param>

    <param-name>cors.support.credentials</param-name>

    <param-value>true</param-value>

  </init-param>

  <init-param>

    <param-name>cors.preflight.maxage</param-name>

    <param-value>18000</param-value>

  </init-param>

</filter>

<filter-mapping>

<filter-name>CorsFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

파일 업로드 progress 바 설정 할 때 CROS 문제가 발생했을 때 해당 방법으로 해결하였다.