diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/request/SieveAddRequest.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/request/SieveAddRequest.java
index 9fbbb2b..0207a12 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/request/SieveAddRequest.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/request/SieveAddRequest.java
@@ -3,6 +3,7 @@ package com.lyms.platform.operate.web.request;
 import com.lyms.platform.common.base.IBasicRequestConvert;
 import com.lyms.platform.pojo.SieveModel;
 import com.lyms.platform.pojo.SieveResultModel;
+import org.apache.commons.lang.StringUtils;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -113,16 +114,16 @@ public class SieveAddRequest implements IBasicRequestConvert<SieveResultModel> {
     public Integer getMax(){
         List<Integer> list =new ArrayList<>();
 
-        if(null!=tszhz){
+        if(StringUtils.isNotEmpty(tszhz)){
             list.add(Integer.valueOf(tszhz));
         }
-        if(null!=sjgjx){
+        if(StringUtils.isNotEmpty(sjgjx)){
             list.add(Integer.valueOf(sjgjx));
         }
-        if(null!=sbst){
+        if(StringUtils.isNotEmpty(sbst)){
             list.add(Integer.valueOf(sbst));
         }
-        if(null!=dzhpx){
+        if(StringUtils.isNotEmpty(dzhpx)){
             list.add(Integer.valueOf(dzhpx));
         }
         return Collections.max(list);