diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/cache/EntityCache.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/cache/EntityCache.java
index b59cd34..b3e0a50 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/cache/EntityCache.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/cache/EntityCache.java
@@ -2,6 +2,7 @@ package cc.smtweb.framework.core.db.cache;
 
 import cc.smtweb.framework.core.annotation.SwCache;
 import cc.smtweb.framework.core.cache.AbstractCache;
+import cc.smtweb.framework.core.common.SwConsts;
 import cc.smtweb.framework.core.db.DbEngine;
 import cc.smtweb.framework.core.db.EntityDao;
 import cc.smtweb.framework.core.db.impl.DefaultEntity;
@@ -38,10 +39,10 @@ public class EntityCache extends AbstractCache<DefaultEntity> {
                 String ret = "";
                 for (String s : StringUtils.split(cache.getFields(), ",")) {
                     if (StringUtils.isNotEmpty(s)) {
-                        ret += "_" + bean.getStr(s);
+                        ret += SwConsts.SPLIT_CHAR + bean.getStr(s);
                     }
                 }
-                return ret;
+                return ret.substring(1);
             };
             if (cache.isMapType()) {
                 regMap(cache.getName(), key);
diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/dao/AbstractEntityDao.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/dao/AbstractEntityDao.java
index c6ed70e..79b0e8e 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/dao/AbstractEntityDao.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/db/dao/AbstractEntityDao.java
@@ -313,6 +313,7 @@ public abstract class AbstractEntityDao<T> {
     }
 
     public Object readValue(T obj, String fieldName) {
+        if (obj == null) return null;
         EntityColumn beanColumn = getBeanColumn(fieldName);
 
         return beanColumn.readValue(obj);
diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultListHandler.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultListHandler.java
index 6369468..ca96b92 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultListHandler.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultListHandler.java
@@ -91,7 +91,11 @@ public class DefaultListHandler<T extends DefaultEntity> extends AbstractListHan
                         String sn = (String) dao.readValue(b, l.getLinkNameField());
                         if (StringUtils.isNotEmpty(sn)) names += "," + sn;
                     }
-                    row.put(l.getFieldName() + "_text", names.substring(1));
+                    if (StringUtils.isNotEmpty(names)) {
+                        row.put(l.getFieldName() + "_text", names.substring(1));
+                    } else {
+                        row.put(l.getFieldName() + "_text", "");
+                    }
                 } else {
                     List<String> list = mapIds.computeIfAbsent(l.getLinkTable().getName(), k -> new ArrayList<>());
                     Collections.addAll(list, ids);