将字典中的键值对按照一定顺序拼接成到get 请求的参数中
var signParmeters : [String:Any] = [
"client_id" : 67,
"idfa" : "lfgoebiehfhfihdilh",
"sn" : "khceilwgcidwlgcbdlwvc",
"timestamp" : 12345678,
"url" : "lgksjhdgdwcldwcvldvcdilvdk",
"version" : 1.50
]
//排序 - 根据字典 key 首字母
let arr = signParmeters.sorted{ (t1, t2) -> Bool in
return t1.0 < t2.0
}
//变形 - “k=v”
let strArr = arr.map{ (k:String,v:Any) -> String in
return String(format:"%@=%@",k,String(describing: v))
}
//拼接 - “k1=v1&k2=v2&k3=v3...”
let str = strArr.joined(separator:"&")
print(str)
