看代碼吧~
// Strval 獲取變量的字符串值
// 浮點型 3.0將會轉換成字符串3, "3"
// 非數值或字符類型的變量將會被轉換成JSON格式字符串
func Strval(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
}
補充：golang json 為map[string] interface{}
json字符串：
{"sn":1,"ls":false,"bg":0,"ed":0,"ws":[{"bg":0,"cw":[{"sc":0,"w":"還"}]},{"bg":0,"cw":[{"sc":0,"w":"有點"}]},{"bg":0,"cw":[{"sc":0,"w":"眼熟"}]}]}
需要將json格式中的w字段取出來，并且拼成結果串進行展示
1、從json數組中獲取ws
2、ws是數組，數組元素為object
3、cw是數組，數組元素為object
4、w是string
5、從cw遍歷獲取w字段
解析代碼：
func RecResultJsonToPlain() {
var recResult string
var dat map[string]interface{}
json.Unmarshal([]byte(json_str), dat)
if v, ok := dat["ws"]; ok {
ws := v.([]interface{})
for i, wsItem := range ws {
wsMap := wsItem.(map[string]interface{})
if vCw, ok := wsMap["cw"]; ok {
cw := vCw.([]interface{})
for i, cwItem := range cw {
cwItemMap := cwItem.(map[string]interface{})
if w, ok := cwItemMap["w"]; ok {
recResult = recResult + w.(string)
}
}
}
}
}
fmt.Println(recResult)
}
以上為個人經驗，希望能給大家一個參考，也希望大家多多支持腳本之家。如有錯誤或未考慮完全的地方，望不吝賜教。
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