golang的JSON处理

解析到结构体

主要是把JSON数据解析到结构体，再去处理结构体数据，就会变得简单，例如有以下的JSON请求数据

Req:{
"data":{
"PlayingNumber" : "number" ,
"WaitingNumber" : "number" ,
"PlayingUsers" : [{
"OpenId" : "string"
} ...],
"WaitingUsers" : [{
"OpenId" : "string"
} ...]
}
}

在后台解析时，就要利用以下的结构体来解析数据：

type OnlinePlayer struct {
OpenId string
}
type Obj struct {
PlayingNumber int64
WaitingNumber int64
PlayingUsers  []OnlinePlayer
WaitingUsers  []OnlinePlayer
}

在函数体里调用

json.Unmarshal(this.Ctx.Input.RequestBody, &ob)

，如此就可以解析请求体JSON中的数据看。

完整版代码：

func (this *StatusAPIController) OnlineCount() {
var ob Obj
json.Unmarshal(this.Ctx.Input.RequestBody, &ob)
PlayingUsersNumber := ob.PlayingNumber
WaitingUsersNumber := ob.WaitingNumber
players_id := ob.PlayingUsers
for _, v := range players_id {
var player_temp *models.User
player_temp, _ = models.UserGetByOpenId(v.OpenId)
PlayingUsers = append(PlayingUsers, player_temp)
}
waits_id := ob.WaitingUsers
for _, v := range waits_id {
var wait_temp *models.User
wait_temp, _ = models.UserGetByOpenId(v.OpenId)
WaitingUsers = append(WaitingUsers, wait_temp)
}
beego.Debug(PlayingUsersNumber, WaitingUsersNumber)
}

参考：JS
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ON处理