diff --git a/README.md b/README.md
index 10045ee5fe7b697d60f6e7afc1550af5e5223494..0cfe25e8dfc300415c559226641b989c7ca97d2d 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ springboot-mybatis-wr-separation is a Maven project based on SpringBoot and Myba
         <dependency>
             <groupId>com.gitee.sunchenbin</groupId>
             <artifactId>springboot-mybatis-wr-separation</artifactId>
-            <version>0.0.3.RELEASE</version>
+            <version>0.0.4.RELEASE</version>
         </dependency>
 	
 2. application.properties中需要做如下配置
diff --git a/pom.xml b/pom.xml
index 6531d9f0078c64b394a450dc2ae9c4e1db1e6d8d..86d630e48842b99038466e4b44ffc08e480c845f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.gitee.sunchenbin</groupId>
 	<artifactId>springboot-mybatis-wr-separation</artifactId>
-	<version>0.0.3.RELEASE</version>
+	<version>0.0.4.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<parent>
diff --git a/src/main/java/com/gitee/sunshine/bean/MyRoutingDataSource.java b/src/main/java/com/gitee/sunshine/bean/MyRoutingDataSource.java
index 77281842d4a6a65ea2a16143d50f78e1227d8f5b..ea5b3641fbebceb49fc520a0a457192f76e47e38 100644
--- a/src/main/java/com/gitee/sunshine/bean/MyRoutingDataSource.java
+++ b/src/main/java/com/gitee/sunshine/bean/MyRoutingDataSource.java
@@ -13,7 +13,7 @@ public class MyRoutingDataSource extends AbstractRoutingDataSource {
     protected Object determineCurrentLookupKey() {
     	DBTypeEnum dbTypeEnum = DBContextHolder.get();
     	LOGGER.info("dbtype:{}",dbTypeEnum);
-        return dbTypeEnum;
+        return dbTypeEnum == null ? DBTypeEnum.WRITE : dbTypeEnum;
     }
 
 }
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