Swift3.0蛋蛋忧伤的邂逅之网络请求
2016-09-29 本文已影响156人
Easy_VO
前言：
swift这个不稳定，真的是蛋疼无比，尤其是语法变更。第三方更新不及时，也导致很多问题。anyway闲暇之余手里不忙来“深入浅出”的学习一下皮毛。
zm.jpg
接昨天做的Swift中自定义cell，来进一步模仿着项目的进行~
在swift中再不想oc一样.h/.m分明，讲道理最开始接触oc的时候觉得这样才好啊，声明和实现分开写。不过后来写swift又觉得写在一个.swift里这么写也很爽。
具体实现步骤：
1.新建一个类，姑且取名为VDNetTools吧
2.在其中进行网络请求的书写吧
GET请求
//单例
static let share = VDNetTools()
func getWithPath(path: String,paras: Dictionary<String,Any>?,success: @escaping ((_ result: Any) -> ()),failure: @escaping ((_ error: Error) -> ())) {
var i = 0
var address = path
if let paras = paras {
for (key,value) in paras {
if i == 0 {
address += "?\(key)=\(value)"
}else {
address += "&\(key)=\(value)"
}
i += 1
}
}
let url = URL(string: address.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)!)
let session = URLSession.shared
let dataTask = session.dataTask(with: url!) { (data, respond, error) in
if let data = data {
if let result = try? JSONSerialization.jsonObject(with: data, options: .allowFragments){
success(result)
}
}else {
failure(error!)
}
}
dataTask.resume()
}
POST请求
func postWithPath(path: String,paras: Dictionary<String,Any>?,success: @escaping ((_ result: Any) -> ()),failure: @escaping ((_ error: Error) -> ())) {
var i = 0
var address: String = ""
if let paras = paras {
for (key,value) in paras {
if i == 0 {
address += "\(key)=\(value)"
}else {
address += "&\(key)=\(value)"
}
i += 1
}
}
let url = URL(string: path)
var request = URLRequest.init(url: url!)
request.httpMethod = "POST"
print(address)
request.httpBody = address.data(using: .utf8)
let session = URLSession.shared
let dataTask = session.dataTask(with: request) { (data, respond, error) in
if let data = data {
if let result = try? JSONSerialization.jsonObject(with: data, options: .allowFragments) {
success(result)
}
}else {
failure(error!)
}
}
dataTask.resume()
}
怎么使用呢
@objc fileprivate func loadData() {
let path = "请求的地址"
// let dict = ["userid":1]
VDNetTools.share.getWithPath(path: path, paras: nil, success: { (result) in
// print(result)
//如果设置options为JSONSerialization.WritingOptions.prettyPrinted，则打印格式更好阅读
let data = try? JSONSerialization.data(withJSONObject: result, options: JSONSerialization.WritingOptions.prettyPrinted)
//Data转换成String打印输出
let str = String(data:data!, encoding: String.Encoding.utf8)
//输出json字符串
print("Json Str:"); print(str)
}) { (error) in
print(error)
}
}
