diff --git a/backend/src/main/java/com/yfd/platform/env/service/impl/SdWtMonitorServiceImpl.java b/backend/src/main/java/com/yfd/platform/env/service/impl/SdWtMonitorServiceImpl.java
index 43acd6f..8e83a91 100644
--- a/backend/src/main/java/com/yfd/platform/env/service/impl/SdWtMonitorServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/env/service/impl/SdWtMonitorServiceImpl.java
@@ -57,8 +57,8 @@ public class SdWtMonitorServiceImpl implements SdWtMonitorService {
                 .append("wt.STTP AS sttpCode, ")
                 .append("wt.STCD AS stcd, ")
                 .append("wt.RSTCD AS rstcd, ")
-                .append("CAST(NULL AS VARCHAR2(200)) AS stCode, ")
-                .append("CAST(NULL AS VARCHAR2(200)) AS stName, ")
+                .append("NULL AS stCode, ")
+                .append("NULL AS stName, ")
                 .append("eng.DVTP AS dvtp, ")
                 .append("hb.ORDER_INDEX AS baseStepSort, ")
                 .append("eng.HBRVCD AS hbrvcd, ")
@@ -69,7 +69,7 @@ public class SdWtMonitorServiceImpl implements SdWtMonitorService {
                 .append("LEFT JOIN SD_HYDROBASE hb ON hb.BASEID = eng.BASE_ID ")
                 .append("LEFT JOIN (SELECT DISTINCT STCD FROM SD_WTRV_R WHERE IS_DELETED = 0 AND TM >= SYSDATE - 1) rvRecent ON rvRecent.STCD = wt.STCD ")
                 .append("LEFT JOIN (SELECT DISTINCT STCD FROM SD_WTVT_R WHERE IS_DELETED = 0 AND TM >= SYSDATE - 1) vtRecent ON vtRecent.STCD = wt.STCD ")
-                .append("WHERE wt.IS_DELETED = 0 AND wt.DTIN_TYPE = 0");
+                .append("WHERE wt.IS_DELETED = 0 AND wt.DTIN_TYPE = 0 ");
 
         Map<String, Object> paramMap = new HashMap<>();
         if (mway != null && !mway.isBlank()) {
diff --git a/backend/src/main/java/com/yfd/platform/utils/QgcQueryWrapperUtil.java b/backend/src/main/java/com/yfd/platform/utils/QgcQueryWrapperUtil.java
index bdbb6ac..9db62f6 100644
--- a/backend/src/main/java/com/yfd/platform/utils/QgcQueryWrapperUtil.java
+++ b/backend/src/main/java/com/yfd/platform/utils/QgcQueryWrapperUtil.java
@@ -116,8 +116,7 @@ public class QgcQueryWrapperUtil {
                 }
 
                 if (columnName != null && columnName.equals(fieldName)) {
-                    if (StrUtil.isEmpty((CharSequence) value)) {
-                        StringBuffer var9 = null;
+                    if (value == null || (value instanceof String && StrUtil.isEmpty((String) value))) {
                         return;
                     }