diff --git a/core/src/server/web_impl/handler/WebRequestHandler.cpp b/core/src/server/web_impl/handler/WebRequestHandler.cpp
index 7e633f8b9be267913eda4db9055794bbafbb975e..c5b8c59f06f57b849ed5708ba800e215fcfabe20 100644
--- a/core/src/server/web_impl/handler/WebRequestHandler.cpp
+++ b/core/src/server/web_impl/handler/WebRequestHandler.cpp
@@ -78,58 +78,6 @@ WebErrorMap(ErrorCode code) {
 }
 
 /////////////////////////////////// Private methods ///////////////////////////////////////
-Status
-WebRequestHandler::ParseQueryInteger(const OQueryParams& query_params, const std::string& key, int64_t& value,
-                                     bool nullable) {
-    auto query = query_params.get(key.c_str());
-    if (nullptr != query.get() && query->getSize() > 0) {
-        std::string value_str = query->std_str();
-        if (!ValidationUtil::ValidateStringIsNumber(value_str).ok()) {
-            return Status(ILLEGAL_QUERY_PARAM,
-                          "Query param \'offset\' is illegal, only non-negative integer supported");
-        }
-
-        value = std::stol(value_str);
-    } else if (!nullable) {
-        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
-    }
-
-    return Status::OK();
-}
-
-Status
-WebRequestHandler::ParseQueryStr(const OQueryParams& query_params, const std::string& key, std::string& value,
-                                 bool nullable) {
-    auto query = query_params.get(key.c_str());
-    if (nullptr != query.get() && query->getSize() > 0) {
-        value = query->std_str();
-    } else if (!nullable) {
-        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
-    }
-
-    return Status::OK();
-}
-
-Status
-WebRequestHandler::ParseQueryBool(const OQueryParams& query_params, const std::string& key, bool& value,
-                                  bool nullable) {
-    auto query = query_params.get(key.c_str());
-    if (nullptr != query.get() && query->getSize() > 0) {
-        std::string value_str = query->std_str();
-        if (!ValidationUtil::ValidateStringIsBool(value_str).ok()) {
-            return Status(ILLEGAL_QUERY_PARAM, "Query param \'all_required\' must be a bool");
-        }
-        value = value_str == "True" || value_str == "true";
-        return Status::OK();
-    }
-
-    if (!nullable) {
-        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
-    }
-
-    return Status::OK();
-}
-
 void
 WebRequestHandler::AddStatusToJson(nlohmann::json& json, int64_t code, const std::string& msg) {
     json["code"] = (int64_t)code;
diff --git a/core/src/server/web_impl/handler/WebRequestHandler.h b/core/src/server/web_impl/handler/WebRequestHandler.h
index 6c1c689a309428f65c70d845925c0b54b2af94ea..df6b234e6d5acc5858bcdaf7e09ba981f1605b1d 100644
--- a/core/src/server/web_impl/handler/WebRequestHandler.h
+++ b/core/src/server/web_impl/handler/WebRequestHandler.h
@@ -77,16 +77,6 @@ class WebRequestHandler {
         return context_ptr;
     }
 
- private:
-    Status
-    ParseQueryInteger(const OQueryParams& query_params, const std::string& key, int64_t& value, bool nullable = true);
-
-    Status
-    ParseQueryStr(const OQueryParams& query_params, const std::string& key, std::string& value, bool nullable = true);
-
-    Status
-    ParseQueryBool(const OQueryParams& query_params, const std::string& key, bool& value, bool nullable = true);
-
  private:
     void
     AddStatusToJson(nlohmann::json& json, int64_t code, const std::string& msg);
diff --git a/core/src/server/web_impl/utils/Util.cpp b/core/src/server/web_impl/utils/Util.cpp
index 0108e8ab99b22d4ad4be801d50673a12a1f9b24b..aa1a1820b33999f7de780cbffac855ed83fa7fac 100644
--- a/core/src/server/web_impl/utils/Util.cpp
+++ b/core/src/server/web_impl/utils/Util.cpp
@@ -11,6 +11,8 @@
 
 #include "server/web_impl/utils/Util.h"
 
+#include "utils/ValidationUtil.h"
+
 namespace milvus {
 namespace server {
 namespace web {
@@ -54,6 +56,55 @@ CopyBinRowRecords(const OList<OList<OInt64>::ObjectWrapper>::ObjectWrapper& reco
     return Status::OK();
 }
 
+Status
+ParseQueryInteger(const OQueryParams& query_params, const std::string& key, int64_t& value, bool nullable) {
+    auto query = query_params.get(key.c_str());
+    if (nullptr != query.get() && query->getSize() > 0) {
+        std::string value_str = query->std_str();
+        if (!ValidationUtil::ValidateStringIsNumber(value_str).ok()) {
+            return Status(ILLEGAL_QUERY_PARAM,
+                          "Query param \'offset\' is illegal, only non-negative integer supported");
+        }
+
+        value = std::stol(value_str);
+    } else if (!nullable) {
+        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
+    }
+
+    return Status::OK();
+}
+
+Status
+ParseQueryStr(const OQueryParams& query_params, const std::string& key, std::string& value, bool nullable) {
+    auto query = query_params.get(key.c_str());
+    if (nullptr != query.get() && query->getSize() > 0) {
+        value = query->std_str();
+    } else if (!nullable) {
+        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
+    }
+
+    return Status::OK();
+}
+
+Status
+ParseQueryBool(const OQueryParams& query_params, const std::string& key, bool& value, bool nullable) {
+    auto query = query_params.get(key.c_str());
+    if (nullptr != query.get() && query->getSize() > 0) {
+        std::string value_str = query->std_str();
+        if (!ValidationUtil::ValidateStringIsBool(value_str).ok()) {
+            return Status(ILLEGAL_QUERY_PARAM, "Query param \'all_required\' must be a bool");
+        }
+        value = value_str == "True" || value_str == "true";
+        return Status::OK();
+    }
+
+    if (!nullable) {
+        return Status(QUERY_PARAM_LOSS, "Query param \"" + key + "\" is required");
+    }
+
+    return Status::OK();
+}
+
 }  // namespace web
 }  // namespace server
 }  // namespace milvus
diff --git a/core/src/server/web_impl/utils/Util.h b/core/src/server/web_impl/utils/Util.h
index fe3721e6e8bc7f4ebff72e788f0e2edbaa58e762..9ceaa37ace406eb0cac198465053169750118982 100644
--- a/core/src/server/web_impl/utils/Util.h
+++ b/core/src/server/web_impl/utils/Util.h
@@ -28,6 +28,15 @@ CopyRowRecords(const OList<OList<OFloat32>::ObjectWrapper>::ObjectWrapper& recor
 Status
 CopyBinRowRecords(const OList<OList<OInt64>::ObjectWrapper>::ObjectWrapper& records, std::vector<uint8_t>& vectors);
 
+Status
+ParseQueryInteger(const OQueryParams& query_params, const std::string& key, int64_t& value, bool nullable = true);
+
+Status
+ParseQueryStr(const OQueryParams& query_params, const std::string& key, std::string& value, bool nullable = true);
+
+Status
+ParseQueryBool(const OQueryParams& query_params, const std::string& key, bool& value, bool nullable = true);
+
 }  // namespace web
 }  // namespace server
 }  // namespace milvus