diff --git a/README-zh.md b/README-zh.md
index 0b4ed54..8a3f2d2 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -12,9 +12,6 @@
   <a href="https://central.sonatype.com/artifact/com.github.yulichang/mybatis-plus-join-boot-starter">
     <img alt="Maven central" src="https://img.shields.io/maven-central/v/com.github.yulichang/mybatis-plus-join-boot-starter.svg?style=flat-square">
   </a>
-  <a href="https://oss.sonatype.org/content/repositories/snapshots/com/github/yulichang/mybatis-plus-join-boot-starter/">
-    <img alt="Sonatype Nexus (Snapshots)" src="https://img.shields.io/nexus/s/https/oss.sonatype.org/com.github.yulichang/mybatis-plus-join-boot-starter.svg">
-  </a>
   <a href="https://www.apache.org/licenses/LICENSE-2.0">
     <img alt="code style" src="https://img.shields.io/badge/license-Apache%202-4EB1BA.svg?style=flat-square">
   </a>
@@ -49,12 +46,12 @@
   <dependency>
       <groupId>com.github.yulichang</groupId>
       <artifactId>mybatis-plus-join-boot-starter</artifactId>
-      <version>1.5.3</version>
+      <version>1.5.4</version>
   </dependency>
   ```
 - Gradle
   ```
-   implementation 'com.github.yulichang:mybatis-plus-join-boot-starter:1.5.3'
+   implementation 'com.github.yulichang:mybatis-plus-join-boot-starter:1.5.4'
   ```
   或者clone代码到本地执行 `mvn install`, 再引入以上依赖  
   <br>
diff --git a/README.md b/README.md
index 1d28832..a938205 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,6 @@
   <a href="https://central.sonatype.com/artifact/com.github.yulichang/mybatis-plus-join-boot-starter">
     <img alt="Maven central" src="https://img.shields.io/maven-central/v/com.github.yulichang/mybatis-plus-join-boot-starter.svg?style=flat-square">
   </a>
-  <a href="https://oss.sonatype.org/content/repositories/snapshots/com/github/yulichang/mybatis-plus-join-boot-starter/">
-    <img alt="Sonatype Nexus (Snapshots)" src="https://img.shields.io/nexus/s/https/oss.sonatype.org/com.github.yulichang/mybatis-plus-join-boot-starter.svg">
-  </a>
   <a href="https://www.apache.org/licenses/LICENSE-2.0">
     <img alt="code style" src="https://img.shields.io/badge/license-Apache%202-4EB1BA.svg?style=flat-square">
   </a>
@@ -49,12 +46,12 @@
   <dependency>
       <groupId>com.github.yulichang</groupId>
       <artifactId>mybatis-plus-join-boot-starter</artifactId>
-      <version>1.5.3</version>
+      <version>1.5.4</version>
   </dependency>
   ```
 - Gradle
   ```
-   implementation 'com.github.yulichang:mybatis-plus-join-boot-starter:1.5.3'
+   implementation 'com.github.yulichang:mybatis-plus-join-boot-starter:1.5.4'
   ```
   或者clone代码到本地执行 `mvn install`, 再引入以上依赖  
   <br>
diff --git a/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/MPJBaseMethod.java b/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/MPJBaseMethod.java
index 3b6757d..99ab99f 100644
--- a/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/MPJBaseMethod.java
+++ b/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/MPJBaseMethod.java
@@ -17,6 +17,7 @@ import java.net.URLEncoder;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Objects;
+import java.util.Optional;
 
 import static java.util.stream.Collectors.joining;
 
@@ -127,9 +128,10 @@ public interface MPJBaseMethod extends Constants {
         if (fieldStrategy == FieldStrategy.NEVER) {
             return null;
         }
+        FieldStrategy strategy = Optional.ofNullable(fieldStrategy).orElse(FieldStrategy.DEFAULT);
         if (AdapterHelper.getAdapter().mpjIsPrimitive(tableFieldInfo)
-                || fieldStrategy.name().equalsIgnoreCase("ALWAYS")
-                || fieldStrategy.name().equalsIgnoreCase("IGNORED")) {
+                || strategy.name().equalsIgnoreCase("ALWAYS")
+                || strategy.name().equalsIgnoreCase("IGNORED")) {
             return sqlScript;
         }
         if (fieldStrategy == FieldStrategy.NOT_EMPTY && tableFieldInfo.isCharSequence()) {
diff --git a/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/UpdateJoin.java b/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/UpdateJoin.java
index 40571a1..bb434b8 100644
--- a/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/UpdateJoin.java
+++ b/mybatis-plus-join-core/src/main/java/com/github/yulichang/method/UpdateJoin.java
@@ -8,6 +8,8 @@ import com.github.yulichang.adapter.AdapterHelper;
 import org.apache.ibatis.mapping.MappedStatement;
 import org.apache.ibatis.mapping.SqlSource;
 
+import java.util.Optional;
+
 /**
  * copy {@link com.baomidou.mybatisplus.core.injector.methods.Update}
  *
@@ -65,9 +67,10 @@ public class UpdateJoin extends MPJAbstractMethod {
         if (fieldStrategy == FieldStrategy.NEVER) {
             return null;
         }
+        FieldStrategy strategy = Optional.ofNullable(fieldStrategy).orElse(FieldStrategy.DEFAULT);
         if (AdapterHelper.getAdapter().mpjIsPrimitive(tableFieldInfo)
-                || fieldStrategy.name().equalsIgnoreCase("ALWAYS")
-                || fieldStrategy.name().equalsIgnoreCase("IGNORED")) {
+                || strategy.name().equalsIgnoreCase("ALWAYS")
+                || strategy.name().equalsIgnoreCase("IGNORED")) {
             return sqlScript;
         }
         if (fieldStrategy == FieldStrategy.NOT_EMPTY && tableFieldInfo.isCharSequence()) {