무중단 배포용 /health 200 응답 기능 추가

src/main/java/egovframework/main/web/MainController.java

@@ -32,6 +32,8 @@ import javax.servlet.http.HttpServletResponse;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.ModelMap;
 import org.springframework.web.bind.annotation.RequestMapping;
+import java.io.IOException;
+import org.springframework.web.bind.annotation.RequestMethod;
 
 @Controller
 public class MainController {
@@ -88,5 +90,12 @@ public class MainController {
         }
         return startPage;
     }
+
+    @RequestMapping(value = "/health", method = RequestMethod.GET)
+    public void health(HttpServletResponse response) throws IOException {
+        response.setStatus(HttpServletResponse.SC_OK);
+        response.setContentType("text/plain;charset=UTF-8");
+        response.getWriter().write("OK");
+    }
 }