CORS 적용

서비스 API CORS 적용

• CORS 요청 종류 : Simple/Preflight, Credential/Non-Credential
• 서비스 api는 Custom Header가 존재하여 Preflight 적용 됨
• Preflight 요청은 OPTIONS 메소드로 예비요청 후 (POST, GET, HEAD, PUT ,DELETE)인 본 요청 처리 (브라우저에 의해 자동으로 요청됨)

1.tomcat 설정

• 참고url : https://tomcat.apache.org/tomcat-8.5-doc/config/filter.html#CORS_Filter

<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>https://www.apache.org</param-value>
  </init-param>
  <init-param>
    <param-name>cors.allowed.methods</param-name>
    <param-value>GET,POST,HEAD,OPTIONS,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>Access-Control-Allow-Origin,Access-Control-Allow-Credentials</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>10</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

2. 서비스 설정

• Spring MVC CORS

• 참고url: https://docs.spring.io/spring-framework/docs/current/reference/html/web.html#mvc-cors

  1) CrossOrigin annotation 설정 (Controller 개별허용)
  @CrossOrigin(origins = https://test.com) 특정 url 설정 가능

@Override
 @CrossOrigin(origins = "*")
 public ResponseVo svcMainGets(HeaderVo headerVo, HttpServletRequest httpServletRequest) throws Exception {
 ...
}

2) WebConfig 설정 (전역설정)

@Configuration
@EnableWebMvc

public class WebMvcConfig implements WebMvcConfigurer , Filter{
 @Override
 public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
        .allowedOrigins("*")
        .allowedMethods("*")
        .allowedHeaders("*");
 }

3) Filter 설정

@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
   throws IOException, ServletException {
  HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT, PATCH");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "Content-Type, Accept, X-Requested-With, remember-me");
        chain.doFilter(req, res);
  
 }