diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
index e008bfe..900c9b4 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/OOSpider.java
@@ -28,13 +28,15 @@ public class OOSpider extends Spider {
         this(ObjectPageProcessor.create(site, pageModels));
         this.objectPipeline = new ObjectPipeline();
         super.pipeline(objectPipeline);
-        for (Class pageModel : pageModels) {
-            this.objectPipeline.put(pageModel, pageModelPipeline);
+        if (pageModelPipeline!=null){
+            for (Class pageModel : pageModels) {
+                this.objectPipeline.put(pageModel, pageModelPipeline);
+            }
         }
     }
 
     public static OOSpider create(Site site, Class... pageModels) {
-        return new OOSpider(site, new ConsolePageModelPipeline(), pageModels);
+        return new OOSpider(site, null, pageModels);
     }
 
     public static OOSpider create(Site site, PageModelPipeline pageModelPipeline, Class... pageModels) {
diff --git a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ObjectPipeline.java b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ObjectPipeline.java
index f590384..41296f5 100644
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/model/ObjectPipeline.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/model/ObjectPipeline.java
@@ -35,14 +35,13 @@ public class ObjectPipeline implements Pipeline {
             Object o = resultItems.get(classPageModelPipelineEntry.getKey().getCanonicalName());
             if (o != null) {
                 Annotation annotation = classPageModelPipelineEntry.getKey().getAnnotation(ExtractBy.class);
-                ExtractBy extractBy = (ExtractBy) annotation;
-                if (extractBy.multi()) {
+                if (annotation == null || !((ExtractBy) annotation).multi()) {
+                    classPageModelPipelineEntry.getValue().process(o, task);
+                } else {
                     List<Object> list = (List<Object>) o;
                     for (Object o1 : list) {
                         classPageModelPipelineEntry.getValue().process(o1, task);
                     }
-                } else {
-                    classPageModelPipelineEntry.getValue().process(o, task);
                 }
             }
         }