diff --git a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/system/query/QueryCondition.java b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/system/query/QueryCondition.java
index 6ca4e165..5581543a 100644
--- a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/system/query/QueryCondition.java
+++ b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/system/query/QueryCondition.java
@@ -16,7 +16,7 @@ public class QueryCondition implements Serializable {
 	private String dbType;
 	private String rule;
 	private String val;
-	
+
 	public String getField() {
 		return field;
 	}
@@ -59,7 +59,7 @@ public class QueryCondition implements Serializable {
 
 	@Override
 	public String toString(){
-		StringBuffer sb =new StringBuffer();
+		StringBuilder sb =new StringBuilder();
 		if(field == null || "".equals(field)){
 			return "";
 		}