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89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
package util
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import (
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"reflect"
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"github.com/fatih/structs"
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"github.com/jinzhu/copier"
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"github.com/mitchellh/mapstructure"
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)
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var ConvertUtil = convertUtil{}
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// convertUtil 转换工具
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type convertUtil struct{}
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// StructToMap 结构体转换成map,深度转换
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func (c convertUtil) StructToMap(from interface{}) map[string]interface{} {
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// var m = map[string]interface{}{}
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// mapstructure.Decode(from, &m) //深度转换所有结构体
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m := structs.Map(from) // 需要tag:structs，深度转换
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return m
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}
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// StructsToMaps 将结构体转换成Map列表
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func (c convertUtil) StructsToMaps(from interface{}) (data []map[string]interface{}) {
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var objList []interface{}
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err := copier.Copy(&objList, from)
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if err != nil {
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// core.Logger.Errorf("convertUtil.StructsToMaps err: err=[%+v]", err)
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return nil
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}
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for _, v := range objList {
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data = append(data, c.StructToMap(v))
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}
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return data
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}
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// ShallowStructToMap 将结构体转换成map,浅转换
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func (c convertUtil) ShallowStructToMap(from interface{}) map[string]interface{} {
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m := make(map[string]interface{})
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v := reflect.ValueOf(from)
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t := v.Type()
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for i := 0; i < t.NumField(); i++ {
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field := t.Field(i)
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value := v.Field(i).Interface()
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m[field.Name] = value
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}
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return m
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}
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// ShallowStructsToMaps 将结构体列表转换成Map列表,浅转换
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func (c convertUtil) ShallowStructsToMaps(from interface{}) (data []map[string]interface{}) {
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var objList []interface{}
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err := copier.Copy(&objList, from)
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if err != nil {
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// core.Logger.Errorf("convertUtil.StructsToMaps err: err=[%+v]", err)
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return nil
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}
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for _, v := range objList {
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data = append(data, c.ShallowStructToMap(v))
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}
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return data
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}
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// MapToStruct 将map弱类型转换成结构体
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func (c convertUtil) MapToStruct(from interface{}, to interface{}) (err error) {
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err = mapstructure.WeakDecode(from, to) // 需要tag:mapstructure
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return err
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}
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// StructToStruct 将结构体from弱类型转换成结构体to
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func (c convertUtil) StructToStruct(from interface{}, to interface{}) (err error) {
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m := c.StructToMap(from)
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err = c.MapToStruct(m, to)
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return err
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}
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func (c convertUtil) Copy(toValue interface{}, fromValue interface{}) interface{} {
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if err := copier.Copy(toValue, fromValue); err != nil {
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// core.Logger.Errorf("Copy err: err=[%+v]", err)
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panic("SystemError")
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}
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return toValue
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}
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