diff --git a/mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcesser.java b/mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcessor.java
similarity index 99%
rename from mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcesser.java
rename to mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcessor.java
index 7179e460..e5127182 100644
--- a/mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcesser.java
+++ b/mybatis-flex-annotation/src/main/java/com/mybatisflex/processer/QueryEntityProcessor.java
@@ -40,7 +40,7 @@ import java.util.*;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
 
-public class QueryEntityProcesser extends AbstractProcessor {
+public class QueryEntityProcessor extends AbstractProcessor {
 
     private static final List<String> defaultSupportColumnTypes = Arrays.asList(
             int.class.getName(), Integer.class.getName(),
@@ -339,7 +339,7 @@ public class QueryEntityProcesser extends AbstractProcessor {
             if (writer != null) {
                 try {
                     writer.close();
-                } catch (IOException e) {
+                } catch (IOException ignored) {
                 }
             }
         }
@@ -409,7 +409,7 @@ public class QueryEntityProcesser extends AbstractProcessor {
             if (writer != null) {
                 try {
                     writer.close();
-                } catch (IOException e) {
+                } catch (IOException ignored) {
                 }
             }
         }
diff --git a/mybatis-flex-annotation/src/main/resources/META-INF/services/javax.annotation.processing.Processor b/mybatis-flex-annotation/src/main/resources/META-INF/services/javax.annotation.processing.Processor
index 27352fa0..1ba3560b 100644
--- a/mybatis-flex-annotation/src/main/resources/META-INF/services/javax.annotation.processing.Processor
+++ b/mybatis-flex-annotation/src/main/resources/META-INF/services/javax.annotation.processing.Processor
@@ -1 +1 @@
-com.mybatisflex.processer.QueryEntityProcesser
\ No newline at end of file
+com.mybatisflex.processer.QueryEntityProcessor
\ No newline at end of file
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/BaseMapper.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/BaseMapper.java
index ede1975e..bfc3d88f 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/BaseMapper.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/BaseMapper.java
@@ -201,11 +201,7 @@ public interface BaseMapper<T> {
      */
     default T selectOneByQuery(@Param(FlexConsts.QUERY) QueryWrapper queryWrapper) {
         List<T> entities = selectListByQuery(queryWrapper.limit(1));
-        if (entities == null || entities.isEmpty()) {
-            return null;
-        } else {
-            return entities.get(0);
-        }
+        return (entities == null || entities.isEmpty()) ? null : entities.get(0);
     }
 
     /**
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/MybatisFlexBootstrap.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/MybatisFlexBootstrap.java
index bdba6a67..122479f2 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/MybatisFlexBootstrap.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/MybatisFlexBootstrap.java
@@ -65,7 +65,7 @@ public class MybatisFlexBootstrap {
     protected SqlSessionFactory sqlSessionFactory;
     protected Class<? extends Log> logImpl;
 
-    private Map<Class<?>, Object> mapperObjects = new ConcurrentHashMap<>();
+    private final Map<Class<?>, Object> mapperObjects = new ConcurrentHashMap<>();
 
     /**
      * 虽然提供了 getInstance，但也允许用户进行实例化，