diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/ResultItems.java b/webmagic-core/src/main/java/us/codecraft/webmagic/ResultItems.java
index 7b543613d7ac786972829eb65e776c891dd9f441..a984105ed83fd2c1a339b061fdffd61e2e4ff1b3 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/ResultItems.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/ResultItems.java
@@ -26,7 +26,7 @@ public class ResultItems {
         if (o == null) {
             return null;
         }
-        return (T) fields.get(key);
+        return (T)o;
     }
 
     public Map<String, Object> getAll() {