想了一下,还是不那么玩,只优化一下

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/handlers/MetaObjectHandler.java

@@ -15,8 +15,6 @@
  */
 package com.baomidou.mybatisplus.core.handlers;
 
-import java.util.function.Supplier;
-
 import org.apache.ibatis.reflection.MetaObject;
 import org.apache.ibatis.reflection.SystemMetaObject;
 
@@ -53,42 +51,20 @@ public interface MetaObjectHandler {
      * <p>
      * 如果包含前缀 et 使用该方法，否则可以直接 metaObject.setValue(fieldName, fieldVal);
      * </p>
-     * <p>
-     * 以后会删除这个方法,请转用下面的方法
-     * </p>
      *
      * @param fieldName  java bean property name
      * @param fieldVal   java bean property value
      * @param metaObject meta object parameter
      */
-    @Deprecated
     default MetaObjectHandler setFieldValByName(String fieldName, Object fieldVal, MetaObject metaObject) {
-        return setFieldValByName(() -> fieldVal, metaObject, fieldName);
-    }
-
-    /**
-     * <p>
-     * Common method to set value for java bean.
-     * </p>
-     * <p>
-     * 如果包含前缀 et 使用该方法，否则可以直接 metaObject.setValue(fieldName, fieldVal);
-     * </p>
-     *
-     * @param fieldVal   java bean property value
-     * @param metaObject meta object parameter
-     * @param fieldNames java bean property names
-     */
-    default MetaObjectHandler setFieldValByName(Supplier<Object> fieldVal, MetaObject metaObject, String... fieldNames) {
-        for (String fieldName : fieldNames) {
-            if (metaObject.hasSetter(fieldName) && metaObject.hasGetter(fieldName)) {
-                metaObject.setValue(fieldName, fieldVal.get());
-            } else if (metaObject.hasGetter(Constants.ENTITY)) {
-                Object et = metaObject.getValue(Constants.ENTITY);
-                if (et != null) {
-                    MetaObject etMeta = SystemMetaObject.forObject(et);
-                    if (etMeta.hasSetter(fieldName)) {
-                        etMeta.setValue(fieldName, fieldVal.get());
-                    }
+        if (metaObject.hasSetter(fieldName)) {
+            metaObject.setValue(fieldName, fieldVal);
+        } else if (metaObject.hasGetter(Constants.ENTITY)) {
+            Object et = metaObject.getValue(Constants.ENTITY);
+            if (et != null) {
+                MetaObject etMeta = SystemMetaObject.forObject(et);
+                if (etMeta.hasSetter(fieldName)) {
+                    etMeta.setValue(fieldName, fieldVal);
                 }
             }
         }