fix:公用方法

util/utils.go

@@ -1 +1,95 @@
 package util
+
+import (
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"sort"
+)
+
+// 排序 排序键必须为数字类型
+type SortBy struct {
+	Data    []map[string]interface{}
+	Sortkey string
+}
+
+func (a SortBy) Len() int { return len(a.Data) }
+
+func (a SortBy) Swap(i, j int) {
+	a.Data[i], a.Data[j] = a.Data[j], a.Data[i]
+}
+
+func (a SortBy) Less(i, j int) bool {
+	//return Float64(a.Data[i][a.Sortkey]) < Float64(a.Data[j][a.Sortkey])
+	m := a.Data[i][a.Sortkey]
+	n := a.Data[j][a.Sortkey]
+	w := reflect.ValueOf(m)
+	v := reflect.ValueOf(n)
+	switch v.Kind() {
+	case reflect.String:
+		return w.String() < v.String()
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return w.Int() < v.Int()
+	case reflect.Float64, reflect.Float32:
+		return w.Float() < v.Float()
+	default:
+		return fmt.Sprintf("%v", w) < fmt.Sprintf("%v", v)
+	}
+}
+
+// data 转换成ret
+func Bind(data interface{}, ret interface{}) error {
+	v := reflect.ValueOf(ret)
+	if v.Kind() != reflect.Ptr {
+		return fmt.Errorf("ptr input ret needed as type as input type %s", v.Kind())
+	}
+	havdata := false
+	var bk interface{}
+	if v.Elem().Kind() == reflect.Slice {
+		t := reflect.Zero(reflect.TypeOf(v.Elem().Interface()))
+		bk = v.Elem().Interface()
+		v.Elem().Set(t)
+		havdata = true
+	}
+	_data, _ := json.MarshalIndent(data, "", "    ")
+	err := json.Unmarshal(_data, ret)
+	if err != nil {
+		fmt.Println(err)
+		if havdata {
+			v.Elem().Set(reflect.ValueOf(bk))
+		}
+		return err
+	}
+	return nil
+}
+
+//根据指定字符排序
+//m := []map[string]int{
+//	{"k": 2},
+//	{"k": 1},
+//	{"k": 3},
+//}
+//
+//customer.SortData(&m, "k", true)
+// ture  倒序3, 2, 1
+//fmt.Println(m)
+func SortData(data interface{}, sortkey string, reverse bool) {
+	//func SortData(data interface{}, sortkey string, reverse bool) {
+	var db []map[string]interface{}
+	err := Bind(data, &db)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	stb := SortBy{db, sortkey}
+	if !reverse {
+		sort.Sort(stb)
+	} else {
+		sort.Sort(sort.Reverse(stb))
+	}
+	err = Bind(stb.Data, data)
+	if err != nil {
+		fmt.Println(err)
+	}
+
+}