[serving] Treat empty HTTP parameter as absent (#429)

deepjavalibrary · Jan 18, 2023 · 5507d89 · 5507d89
1 parent d86b22e
commit 5507d89
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/serving/src/main/java/ai/djl/serving/util/NettyUtils.java b/serving/src/main/java/ai/djl/serving/util/NettyUtils.java
@@ -386,7 +386,11 @@ public static byte[] getBytes(ByteBuf buf) {
     public static String getParameter(QueryStringDecoder decoder, String key, String def) {
         List<String> param = decoder.parameters().get(key);
         if (param != null && !param.isEmpty()) {
-            return param.get(0);
+            String ret = param.get(0);
+            if (ret.isEmpty()) {
+                return def;
+            }
+            return ret;
         }
         return def;
     }