diff --git a/src/main/java/org/ntlab/acanthus_server/models/Gallery.java b/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
index 58e3023..ef99fa0 100644
--- a/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
+++ b/src/main/java/org/ntlab/acanthus_server/models/Gallery.java
@@ -48,11 +48,17 @@
     }
 
     //作品名で作品情報を返す。
-    public Animation getAnimationByAnimationName(String animationName){
-        return animationHashMap.get(animationName);
+    public ArrayList<Animation> getAnimationByAnimationName(String animationName){
+        var animationList = new ArrayList<Animation>();
+        for(var animation : animationHashMap.values()){
+            if(animation.getName().equals(animationName)) animationList.add(animation);
+        }
+        return animationList;
     }
 
 
+
+
     //-----------------------------------------------------------------
     // 作品を作る
 
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/GalleryRest.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/GalleryRest.java
index a9195b1..fdeaa31 100644
--- a/src/main/java/org/ntlab/acanthus_server/resources/gallery/GalleryRest.java
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/GalleryRest.java
@@ -24,11 +24,23 @@
     @Produces(MediaType.APPLICATION_JSON)
 
     //すべての作品情報を返す。
-    public Collection<AnimationJson> getGallery(){
+    public Collection<AnimationJson> getGallery(@QueryParam("animationName") String animationName){
         //変数にAnimation型のArrayListを代入
         var animationJsonList = new ArrayList<AnimationJson>();
+        var searchAnimation = gallery.getAnimationByAnimationName(animationName);
+        var response = Response.status(Response.Status.NO_CONTENT);
+
+        //クエリパラメータがなくても判別可能。
         //拡張for文で上記のListに作品を追加。
-        for (var animation : gallery.getAllAnimation()) animationJsonList.add(new AnimationJson(animation));
+        if(animationName == null) {
+            for (var animation : gallery.getAllAnimation()) animationJsonList.add(new AnimationJson(animation));
+        }
+        //インスタンスが生成されるとnullではなくなる。要素は0。だからsize()をつかう。
+        else if(searchAnimation.size() == 0){
+            response = Response.status(404).entity("この作品名に該当する作品がありません。");
+            throw new WebApplicationException(response.build());
+        }
+        else for(var animation : searchAnimation) animationJsonList.add(new AnimationJson(animation));
         return animationJsonList;
     }
     //public Animation getGallery(){return ;}
@@ -43,14 +55,16 @@
         //Uidをとりアカウント検索
 
         var searchAccounts = Accounts.getInstance().getAccountByUid(uid);
+        var response = Response.status(Response.Status.NO_CONTENT);
+
         if(searchAccounts == null){
-            var response=Response.status(404).entity("該当アカウントが存在しません");
+            response=Response.status(404).entity("該当アカウントが存在しません");
             throw new WebApplicationException(response.build());
         }
 
         //トークン認証　これもクリアするとcreateAnimationが返され作品が作られる。
         if(!searchAccounts.isCollectToken(token)){
-            var response = Response.status(400).entity("トークンが違います。");
+            response = Response.status(400).entity("トークンが違います。");
             throw new WebApplicationException(response.build());
         }
         else {