数据结构支持设置默认值能力

validate.go

@@ -15,6 +15,7 @@ import (
 	dynamicStructGenerate "git.zhangdeman.cn/zhangdeman/dynamic-struct"
 	"git.zhangdeman.cn/zhangdeman/json_filter/gjson_hack"
 	"git.zhangdeman.cn/zhangdeman/serialize"
+	"github.com/creasty/defaults"
 	"github.com/go-playground/validator/v10"
 	"github.com/tidwall/gjson"
 	"github.com/tidwall/sjson"
@@ -101,6 +102,10 @@ func (h *handle) Run() ([]byte, error) {
 	if err := serialize.JSON.UnmarshalWithNumber([]byte(h.formatVal), &val); nil != err {
 		return nil, err
 	}
+	if err := defaults.Set(&val); nil != err {
+		// 默认值设置失败
+		return nil, err
+	}
 	if err := validatorInstance.Struct(val); nil != err {
 		return nil, GetValidateErr(val, err, TagErrMsg)
 	}
@@ -231,6 +236,9 @@ func (h *handle) generateTag(field StructField) string {
 	// 验证规则tag
 	tagList = append(tagList, fmt.Sprintf(`%s:"%s"`, TagValidate, strings.Join(validateRuleList, ",")))
 	// 默认值
+	if field.DefaultValue == "-" && (field.Type == consts.DataTypeString || field.Type == consts.DataTypeStringPtr) {
+		field.DefaultValue = ""
+	}
 	tagList = append(tagList, fmt.Sprintf(`%s:"%s"`, TagDefaultValue, field.DefaultValue))
 	return strings.Join(tagList, " ")
 }