diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/AbstractSaveHandler.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/AbstractSaveHandler.java
index c665e2e..990d10e 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/AbstractSaveHandler.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/AbstractSaveHandler.java
@@ -1,11 +1,8 @@
 package cc.smtweb.framework.core.mvc.service;
 
 import cc.smtweb.framework.core.R;
-import cc.smtweb.framework.core.SwException;
-import cc.smtweb.framework.core.SwMap;
 import cc.smtweb.framework.core.db.DbEngine;
 import cc.smtweb.framework.core.db.jdbc.AbsDbWorker;
-import cc.smtweb.framework.core.session.UserSession;
 import lombok.extern.slf4j.Slf4j;
 
 /**
@@ -29,6 +26,9 @@ public abstract class AbstractSaveHandler<T> extends AbstractHandler {
             bean = loadComp(id);
         }
         readFromPage();
+        if (isNew) {
+            setNewId();
+        }
         checkValid();
         DbEngine.getInstance().doTrans(new AbsDbWorker() {
             @Override
@@ -57,6 +57,7 @@ public abstract class AbstractSaveHandler<T> extends AbstractHandler {
     protected long readId() {
         return params.readLong("id", 0L);
     }
+    protected abstract void setNewId();
 
     //从页面读取数据
     protected abstract void readFromPage();
diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultSaveHandler.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultSaveHandler.java
index f814c09..131a42a 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultSaveHandler.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/mvc/service/DefaultSaveHandler.java
@@ -47,6 +47,11 @@ public class DefaultSaveHandler<T extends DefaultEntity> extends AbstractSaveHan
     }
 
     @Override
+    protected void setNewId() {
+        bean.setEntityId(DbEngine.getInstance().nextId());
+    }
+
+    @Override
     protected T loadComp(long id) {
         return new DefaultProvider<T>(tableName).getBean(id);
     }
diff --git a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/util/jackson/LongSerializer.java b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/util/jackson/LongSerializer.java
index ca2c0ea..8dac914 100644
--- a/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/util/jackson/LongSerializer.java
+++ b/smtweb-framework/sw-framework-core/src/main/java/cc/smtweb/framework/core/util/jackson/LongSerializer.java
@@ -13,7 +13,7 @@ public class LongSerializer extends JsonSerializer<Long> {
         if (value == null) {
             gen.writeNull();
         } else {
-            gen.writeString(value.toString());
+            gen.writeNumber(value);
         }
     }
 }