diff --git a/go/appbuilder/dataset_test.go b/go/appbuilder/dataset_test.go
index 5d7d7ada..17f56a3e 100644
--- a/go/appbuilder/dataset_test.go
+++ b/go/appbuilder/dataset_test.go
@@ -15,8 +15,8 @@
 package appbuilder
 
 import (
-	"bytes"
-	"fmt"
+	// "bytes"
+	// "fmt"
 	"os"
 	"testing"
 )
diff --git a/java/src/main/java/com/baidubce/appbuilder/console/knowledgebase/Knowledgebase.java b/java/src/main/java/com/baidubce/appbuilder/console/knowledgebase/Knowledgebase.java
index 23b071d1..dc540b27 100644
--- a/java/src/main/java/com/baidubce/appbuilder/console/knowledgebase/Knowledgebase.java
+++ b/java/src/main/java/com/baidubce/appbuilder/console/knowledgebase/Knowledgebase.java
@@ -736,6 +736,25 @@ public QueryKnowledgeBaseResponse queryKnowledgeBase(QueryKnowledgeBaseRequest r
         QueryKnowledgeBaseResponse respBody = response.getBody();
         return respBody;
     }
+
+    public QueryKnowledgeBaseResponse queryKnowledgeBase(String query, String type, Integer top, Integer skip,
+            String[] knowledgebaseIDs, QueryKnowledgeBaseRequest.MetadataFilters filters,
+            QueryKnowledgeBaseRequest.QueryPipelineConfig pipelineConfig) 
+            throws IOException, AppBuilderServerException {
+                
+        float rank_score_threshold = 0.4f;
+
+        String url = AppBuilderConfig.QUERY_KNOWLEDGEBASE_URL;
+        QueryKnowledgeBaseRequest request = new QueryKnowledgeBaseRequest(query, type, rank_score_threshold, top, skip, knowledgebaseIDs, filters, pipelineConfig);
+        String jsonBody = JsonUtils.serialize(request);
+        ClassicHttpRequest postRequest = httpClient.createPostRequestV2(url,
+                new StringEntity(jsonBody, StandardCharsets.UTF_8));
+        postRequest.setHeader("Content-Type", "application/json");
+        HttpResponse<QueryKnowledgeBaseResponse> response = httpClient.execute(postRequest,
+                QueryKnowledgeBaseResponse.class);
+        QueryKnowledgeBaseResponse respBody = response.getBody();
+        return respBody;
+    }
     
     public QueryKnowledgeBaseResponse queryKnowledgeBase(String query, String type, Float rank_score_threshold, Integer top, Integer skip,
             String[] knowledgebaseIDs, QueryKnowledgeBaseRequest.MetadataFilters filters,
@@ -746,7 +765,7 @@ public QueryKnowledgeBaseResponse queryKnowledgeBase(String query, String type,
         }
 
         String url = AppBuilderConfig.QUERY_KNOWLEDGEBASE_URL;
-        QueryKnowledgeBaseRequest request = new QueryKnowledgeBaseRequest(query, type, rank_score_threshold,top, skip, knowledgebaseIDs, filters, pipelineConfig);
+        QueryKnowledgeBaseRequest request = new QueryKnowledgeBaseRequest(query, type, rank_score_threshold, top, skip, knowledgebaseIDs, filters, pipelineConfig);
         String jsonBody = JsonUtils.serialize(request);
         ClassicHttpRequest postRequest = httpClient.createPostRequestV2(url,
                 new StringEntity(jsonBody, StandardCharsets.UTF_8));