feat: CORS 에러 설정 코드 작성

src/main/java/com/endlesshorses/oot/custom/config/CorsFilter.java

@@ -0,0 +1,52 @@
+package com.endlesshorses.oot.custom.config;
+
+import java.io.IOException;
+
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+import jakarta.servlet.Filter;
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.FilterConfig;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.ServletRequest;
+import jakarta.servlet.ServletResponse;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+@Component
+@Order(Ordered.HIGHEST_PRECEDENCE)
+public class CorsFilter implements Filter {
+    private Object Ordered;
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        Filter.super.init(filterConfig);
+    }
+
+    @Override
+    public void destroy() {
+        Filter.super.destroy();
+    }
+
+    @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", "*");
+        response.setHeader("Access-Control-Allow-Credentials", "true");
+        response.setHeader("Access-Control-Allow-Methods", "*");
+        response.setHeader("Access-Control-Max-Age", "3600");
+        response.setHeader("Access-Control-Allow-Headers",
+                "Origin, X-Requested-With, Content-Type, Accept, Authorization");
+
+        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
+            response.setStatus(HttpServletResponse.SC_OK);
+        } else {
+            chain.doFilter(req, res);
+        }
+
+    }
+}