允许map传入不存在的字段

structx.go

@@ -19,13 +19,21 @@ func AttactToStruct(structxx any, updateMap map[string]string) (map[string]Chang
 
 // StructProcessor 结构体处理器
 type StructProcessor struct {
+	options     *Options
 	fieldMapper FieldMapper
 	valueSetter ValueSetter
 }
 
 // NewStructProcessor 创建新的结构体处理器
-func NewStructProcessor() *StructProcessor {
+func NewStructProcessor(ops ...Option) *StructProcessor {
+
+	options := defaultOptions()
+	for _, op := range ops {
+		op(options)
+	}
+
 	return &StructProcessor{
+		options:     options,
 		fieldMapper: &defaultFieldMapper{},
 		valueSetter: &defaultValueSetter{},
 	}
@@ -55,13 +63,17 @@ func (sp *StructProcessor) AttactToStruct(structxx any, updateMap map[string]str
 	v = v.Elem()
 
 	t := v.Type()
-	
+
 	fieldMap := sp.fieldMapper.GetFieldMap(t)
 
 	for mapKey, mapValue := range updateMap {
 		fieldInfo, exists := fieldMap[mapKey]
 		if !exists {
-			return nil, fmt.Errorf("字段 %s 不存在", mapKey)
+			if sp.options.allowUnknownFields {
+				continue
+			} else {
+				return nil, fmt.Errorf("字段 %s 不存在", mapKey)
+			}
 		}
 
 		field, err := sp.getFieldByPath(v, fieldInfo.Index)