returning content-type for robots.txt

Author: wowasa

curation-web/src/main/java/eu/clarin/cmdi/curation/web/controller/CurateCtl.java

@@ -13,13 +13,13 @@
 import org.apache.commons.io.FileUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
@@ -233,15 +233,19 @@ private Path curate(Path inFilePath) {
     * @return the robots txt
     */
    @GetMapping("/robots.txt")
-   @ResponseBody
-   public String getRobotsTxt() {     
-      return """
-               User-agent: *
-               Disallow: /download
-               Disallow: /record
-               
-               User-agent: CLARIN Linkchecker: https://www.clarin.eu/linkchecker
-               Allow: /
-               """;
+   public ResponseEntity<String> getRobotsTxt() {     
+      return ResponseEntity
+            .ok()
+            .contentType(MediaType.TEXT_PLAIN)
+            .body(
+               """
+                  User-agent: *
+                  Disallow: /download
+                  Disallow: /record
+                  
+                  User-agent: CLARIN Linkchecker: https://www.clarin.eu/linkchecker
+                  Allow: /
+                  """
+               );
    }
 }