params.go

package util

import (
	"encoding/json"
	"strconv"
)

// Params map[string]interface{}
type Params map[string]interface{}

// Set 设置值
func (p Params) Set(k string, v interface{}) Params {
	p[k] = v

	return p
}

// Get 获取值
func (p Params) Get(k string) (v interface{}) {
	v, _ = p[k]

	return
}

// GetString 强制获取k对应的v string类型
func (p Params) GetString(k string) string {
	v, _ := p[k]

	return InterfaceToString(v)
}

// Exists 判断是否存在
func (p Params) Exists(k string) bool {
	_, ok := p[k]

	return ok
}

// InterfaceToString 不定类型强制装换为string
func InterfaceToString(value interface{}) string {
	var key string
	if value == nil {
		return key
	}

	switch value.(type) {
	case float64:
		ft := value.(float64)
		key = strconv.FormatFloat(ft, 'f', -1, 64)
	case float32:
		ft := value.(float32)
		key = strconv.FormatFloat(float64(ft), 'f', -1, 64)
	case int:
		it := value.(int)
		key = strconv.Itoa(it)
	case uint:
		it := value.(uint)
		key = strconv.Itoa(int(it))
	case int8:
		it := value.(int8)
		key = strconv.Itoa(int(it))
	case uint8:
		it := value.(uint8)
		key = strconv.Itoa(int(it))
	case int16:
		it := value.(int16)
		key = strconv.Itoa(int(it))
	case uint16:
		it := value.(uint16)
		key = strconv.Itoa(int(it))
	case int32:
		it := value.(int32)
		key = strconv.Itoa(int(it))
	case uint32:
		it := value.(uint32)
		key = strconv.Itoa(int(it))
	case int64:
		it := value.(int64)
		key = strconv.FormatInt(it, 10)
	case uint64:
		it := value.(uint64)
		key = strconv.FormatUint(it, 10)
	case string:
		key = value.(string)
	case []byte:
		key = string(value.([]byte))
	default:
		newValue, _ := json.Marshal(value)
		key = string(newValue)
	}

	return key
}