diff --git a/client-adapter/es7x/src/main/java/com/alibaba/otter/canal/client/adapter/es7x/support/ESConnection.java b/client-adapter/es7x/src/main/java/com/alibaba/otter/canal/client/adapter/es7x/support/ESConnection.java
index 26e9c492..3382f6fa 100644
--- a/client-adapter/es7x/src/main/java/com/alibaba/otter/canal/client/adapter/es7x/support/ESConnection.java
+++ b/client-adapter/es7x/src/main/java/com/alibaba/otter/canal/client/adapter/es7x/support/ESConnection.java
@@ -132,14 +132,14 @@ public class ESConnection {
                 logger.error(e.getMessage(), e);
                 return null;
             }
-            
+
             // 通过别名查询mapping返回的是真实索引名称，mappings.get(index)返回null，为兼容别名情况修改如下：
             mappingMetaData = mappings.get(index);
             if (mappingMetaData == null && !mappings.isEmpty()) {
                 // 如果通过索引名找不到，可能是别名，取第一个映射
                 mappingMetaData = mappings.values().iterator().next();
             }
-            
+
             // 如果还是null，说明索引不存在或没有mapping
             if (mappingMetaData == null) {
                 throw new IllegalArgumentException("Not found the mapping info of index: " + index);
diff --git a/client-adapter/es8x/src/main/java/com/alibaba/otter/canal/client/adapter/es8x/support/ESConnection.java b/client-adapter/es8x/src/main/java/com/alibaba/otter/canal/client/adapter/es8x/support/ESConnection.java
index 367d6c47..11285b1b 100644
--- a/client-adapter/es8x/src/main/java/com/alibaba/otter/canal/client/adapter/es8x/support/ESConnection.java
+++ b/client-adapter/es8x/src/main/java/com/alibaba/otter/canal/client/adapter/es8x/support/ESConnection.java
@@ -142,14 +142,14 @@ public class ESConnection {
             logger.error(e.getMessage(), e);
             return null;
         }
-        
+
         // 通过别名查询mapping返回的是真实索引名称，mappings.get(index)返回null，为兼容别名情况修改如下：
         mappingMetaData = mappings.get(index);
         if (mappingMetaData == null && !mappings.isEmpty()) {
             // 如果通过索引名找不到，可能是别名，取第一个映射
             mappingMetaData = mappings.values().iterator().next();
         }
-        
+
         // 如果还是null，说明索引不存在或没有mapping
         if (mappingMetaData == null) {
             throw new IllegalArgumentException("Not found the mapping info of index: " + index);