diff --git a/src/org/redkale/convert/json/JsonReader.java b/src/org/redkale/convert/json/JsonReader.java
index 84a4cb875..e1e165e6a 100644
--- a/src/org/redkale/convert/json/JsonReader.java
+++ b/src/org/redkale/convert/json/JsonReader.java
@@ -217,6 +217,7 @@ public class JsonReader extends Reader {
      */
     @Override
     public int readArrayB(DeMember member, byte[] typevals, Decodeable componentDecoder) {
+        if (this.position <= this.text.length) return SIGN_NULL;
         char ch = this.text[++this.position];
         if (ch == '[') return SIGN_NOLENGTH;
         if (ch == '{') return SIGN_NOLENGTH;