添加注解`ExcelUnInheritable`,声明不可指定类的`Field`不进行继承,可避免继承结构中字段重复和`Converter`覆盖问题

easyexcel-core/src/main/java/com/alibaba/excel/annotation/ExcelUnInheritable.java

@@ -0,0 +1,16 @@
+package com.alibaba.excel.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Declare that this type of field is not inheritable
+ *
+ * @author ShuaiJu Sun
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ExcelUnInheritable {
+}

easyexcel-core/src/main/java/com/alibaba/excel/util/ClassUtils.java

@@ -13,11 +13,13 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
 import java.util.TreeMap;
+import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 
 import com.alibaba.excel.annotation.ExcelIgnore;
 import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
 import com.alibaba.excel.annotation.ExcelProperty;
+import com.alibaba.excel.annotation.ExcelUnInheritable;
 import com.alibaba.excel.annotation.format.DateTimeFormat;
 import com.alibaba.excel.annotation.format.NumberFormat;
 import com.alibaba.excel.annotation.write.style.ContentFontStyle;
@@ -306,8 +308,14 @@ public class ClassUtils {
         // level.
         while (tempClass != null) {
             Collections.addAll(tempFieldList, tempClass.getDeclaredFields());
+
             // Get the parent class and give it to yourself
             tempClass = tempClass.getSuperclass();
+            ExcelUnInheritable excelUnInheritable = Optional.ofNullable(tempClass)
+                    .map(item -> item.getAnnotation(ExcelUnInheritable.class)).orElse(null);
+            if (Objects.nonNull(excelUnInheritable)){
+                break;
+            }
         }
         // Screening of field
         Map<Integer, List<FieldWrapper>> orderFieldMap = new TreeMap<>();
@@ -580,4 +588,3 @@ public class ClassUtils {
         CONTENT_THREAD_LOCAL.remove();
     }
 }
-