diff --git a/dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/JSONUtils.java b/dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/JSONUtils.java
index 4ab04997d8..73af57929b 100644
--- a/dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/JSONUtils.java
+++ b/dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/JSONUtils.java
@@ -211,25 +211,13 @@ public class JSONUtils {
/**
* json to map
- *
* {@link #toMap(String, Class, Class)}
*
* @param json json
* @return json to map
*/
public static Map toMap(String json) {
- if (StringUtils.isEmpty(json)) {
- return null;
- }
-
- try {
- return objectMapper.readValue(json, new TypeReference