// Mapper 接口保持原样用于 PageResult.Convert 方法type Mapper interface {NewRow() anyNewRows() []any}// Converter 泛型结构体T From/Source, D To/Destinationtype Converter[T any, D any] struct{}// 单条转换 // To: T - Dfunc (c Converter[T, D]) To(src T) D {var dst Dgconv.Struct(src, dst)return dst}// From: D - Tfunc (c Converter[T, D]) From(src D) T {var dst Tgconv.Struct(src, dst)return dst}// 列表转换 // ToList: []T - []Dfunc (c Converter[T, D]) ToList(src []T) []D {if len(src) 0 {return nil}dst : make([]D, len(src))for i, v : range src {dst[i] c.To(v)}return dst}// FromList: []D - []Tfunc (c Converter[T, D]) FromList(src []D) []T {if len(src) 0 {return nil}dst : make([]T, len(src))for i, v : range src {dst[i] c.From(v)}return dst}// 实现 Mapper 接口 func (c Converter[T, D]) NewRow() any {var d Dreturn d}func (c Converter[T, D]) NewRows() []any {return []any{}}// PageResult 转换包级函数类型安全 // PageTo: *PageResult[T] - *PageResult[D]func PageTo[T any, D any](p *PageResult[T], c Converter[T, D]) *PageResult[D] {var ret NewPageResult[D]()ret.FromPageResult(p.PageResult)if !p.ExistRecord() {return ret}ret.Data c.ToList(p.Data)return ret}// PageFrom: *PageResult[D] - *PageResult[T]func PageFrom[T any, D any](p *PageResult[D], c Converter[T, D]) *PageResult[T] {var ret NewPageResult[T]()ret.FromPageResult(p.PageResult)if !p.ExistRecord() {return ret}ret.Data c.FromList(p.Data)return ret}// PageResult 方法兼容旧接口返回 any func (p *PageResult[T]) Convert(m Mapper) *PageResult[any] {var ret NewPageResult[any]()ret.FromPageResult(p.PageResult)if !p.ExistRecord() {return ret}var data m.NewRows()for i : range p.Data {var row m.NewRow()err : gconv.Struct(p.Data[i], row)if err ! nil {golog.Error(PageResult Convert err:, err)ret.FailMsg(err.Error())return ret}data append(data, row)}ret.Data datareturn ret}