feat(EnjoyTripKorea#6) : CORS filter 구현

EnjoyTripBackend/src/main/java/com/example/EnjoyTripBackend/filter/CorsFilter.java

@@ -0,0 +1,26 @@
+package com.example.EnjoyTripBackend.filter;
+
+import jakarta.servlet.*;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.IOException;
+
+@Slf4j
+public class CorsFilter implements Filter {
+
+    public void init(FilterConfig filterConfig) throws ServletException {}
+
+    public void destroy() {}
+
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
+        HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
+
+        httpResponse.setHeader("Access-Control-Allow-Origin", "http://127.0.0.1:5500");
+        httpResponse.setHeader("Access-Control-Allow-Credentials", "true");
+        httpResponse.setHeader("Access-Control-Allow-Methods", "POST, OPTIONS, GET, DELETE, PUT");
+        httpResponse.setHeader("Access-Control-Max-Age", "3600");
+        httpResponse.setHeader("Access-Control-Allow-Headers", "Authorization, x-requested-with, origin, content-type, accept");
+        chain.doFilter(servletRequest, servletResponse);
+    }
+}

EnjoyTripBackend/src/main/java/com/example/EnjoyTripBackend/filter/WebConfig.java

@@ -3,6 +3,7 @@
 import com.example.EnjoyTripBackend.util.SessionUserArgumentResolver;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.Filter;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.web.servlet.FilterRegistrationBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -11,6 +12,7 @@
 
 import java.util.List;
 
+@Slf4j
 @Configuration
 public class WebConfig implements WebMvcConfigurer {
 
@@ -27,4 +29,13 @@ public FilterRegistrationBean LoginCheckFilter() {
         filterRegistrationBean.addUrlPatterns("/*");
         return filterRegistrationBean;
     }
+
+    @Bean
+    public FilterRegistrationBean CorsFilter() {
+        FilterRegistrationBean<Filter> filterRegistrationBean = new FilterRegistrationBean<>();
+        filterRegistrationBean.setFilter(new CorsFilter());
+        filterRegistrationBean.setOrder(0);
+        filterRegistrationBean.addUrlPatterns("/*");
+        return filterRegistrationBean;
+    }
 }