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基于Swift语言开发微信、QQ和微博的SSO授权登录代码分析
前言
Swift 语言，怎么说呢，有一种先接受后排斥。又欢迎的感觉，纵观国外大牛开源框架或项目演示，Swift差点儿占领了多半，而国内尽管出现非常多相关技术介绍和教程，可是在真正项目开发中使用的占领非常少部分。原因一是眼下熟练它的开发人员并不多，二是版本号不太稳定，还须要更成熟可靠的版本号支持，但总之未来还是非常有前景的。深有体会。无论是代码量还是编译效率。以及语言特性。现代性都优于Object-C，预计兴许会被苹果作为官方开发语言，值得期待。
走起
鉴于此，笔者将之前用Object-C写的SSO授权登录：微信，QQ和微博。又一次用Swift语言写一遍，以便须要的朋友參考。算是SSO授权登录的姊妹篇；
一，整体架构
1，引入第三方库
除了必须引入相应的登录SDK外，额外引入了SDWebImage。SVProgressHUD。看名字大家都明确吧。引入登录SDK请各自看官方的开发文档，须要增加什么系统库文件。须要配置Other Linker Flags 等，请參考各自官方文档就可以。
2，配置连接桥文件
由于创建的project是基于Swift语言，眼下官方SDK和其他三方库都是用OC写的，所以为了在swift中调用oc代码。须要配置连接桥文件Bridging-Header.h，搜索objective-C bridging Header健，然后在值里面输入XXXLogin/Bridging-Header.h，注意是绝对路径。里面能够输入须要调用的头文件。如
#import "WXApi.h" #import "SVProgressHUD.h" #import "UIImageView+WebCache.h"
3，配置project
由于是SSO跳转方式，须要配置URL Schemes，以便程序返回识别宿主程序。配置方法非常easy，參考各自文档就可以。在info里面能够可视化加入。各自的key值採用官方demo所提供。
二，微信
1。注冊
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
//向微信注冊
WXApi.registerApp(kWXAPP_ID)
return true
}2，授权登录
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
NSNotificationCenter.defaultCenter().addObserver(self, selector:"onRecviceWX_CODE_Notification:", name: "WX_CODE", object: nil)
let sendBtn:UIButton = UIButton()
sendBtn.frame = CGRectMake(30, 100, kIPHONE_WIDTH-60, 40)
sendBtn.backgroundColor = UIColor.redColor()
sendBtn.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal)
sendBtn.setTitle("Swift版本号之微信授权登录", forState: UIControlState.Normal)
sendBtn.addTarget(self, action: "sendBtnClick:", forControlEvents: UIControlEvents.TouchUpInside)
self.view.addSubview(sendBtn)
headerImg = UIImageView(frame: CGRectMake(30, 160, 120, 120))
headerImg.backgroundColor = UIColor.yellowColor()
self.view.addSubview(headerImg)
nicknameLbl.frame = CGRectMake(170, 160, kIPHONE_WIDTH-60-140, 40)
nicknameLbl.backgroundColor = UIColor.lightGrayColor()
nicknameLbl.textColor = UIColor.purpleColor()
nicknameLbl.textAlignment = NSTextAlignment.Center
self.view.addSubview(nicknameLbl)
}
func sendBtnClick(sneder:UIButton)
{
sendWXAuthRequest()
}
//微信登录 第一步
func sendWXAuthRequest(){
let req : SendAuthReq = SendAuthReq()
req.scope = "snsapi_userinfo,snsapi_base"
WXApi .sendReq(req)
}3，回调
func onResp(resp: BaseResp!) {
/*
ErrCode ERR_OK = 0(用户允许)
ERR_AUTH_DENIED = -4（用户拒绝授权）
ERR_USER_CANCEL = -2（用户取消）
code 用户换取access_token的code，仅在ErrCode为0时有效
state 第三方程序发送时用来标识其请求的唯一性的标志，由第三方程序调用sendReq时传入。由微信终端回传。state字符串长度不能超过1K
lang 微信client当前语言
country 微信用户当前国家信息
*/
// var aresp resp :SendAuthResp!
var aresp = resp as! SendAuthResp
// var aresp1 = resp as? SendAuthResp
if (aresp.errCode == 0)
{
println(aresp.code)
//031076fd11ebfa5d32adf46b37c75aax
var dic:Dictionary<String,String>=["code":aresp.code];
let value = http://www.mamicode.com/dic["code"]>
4，获取用户信息
//微信回调通知,获取code 第二步
func onRecviceWX_CODE_Notification(notification:NSNotification)
{
SVProgressHUD.showSuccessWithStatus("获取到code", duration: 1)
var userinfoDic : Dictionary = notification.userInfo!
let code: String = userinfoDic["code"] as! String
println("Recevice Code: \(code)")
self.getAccess_token(code)
}
//获取token 第三步
func getAccess_token(code :String){
//https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code
var requestUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=\(kWXAPP_ID)&secret=\(kWXAPP_SECRET)&code=\(code)&grant_type=authorization_code"
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), {
var requestURL: NSURL = NSURL(string: requestUrl)!
var data = http://www.mamicode.com/NSData(contentsOfURL: requestURL, options: NSDataReadingOptions(), error: nil)>
access_token=\(token)&openid=\(openid)"
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), {
var requestURL: NSURL = NSURL(string: requestUrl)!
var data = http://www.mamicode.com/NSData(contentsOfURL: requestURL, options: NSDataReadingOptions(), error: nil)>
5，跳转
//微信的跳转回调
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
return WXApi.handleOpenURL(url, delegate: self)
}
func application(application: UIApplication, handleOpenURL url: NSURL) -> Bool <span style="white-space:pre"> </span>{
return WXApi.handleOpenURL(url, delegate: self)
}
三。QQ
1，注冊
func sendBtnClick(sneder:UIButton)
{
sendQQAuthRequest()
}
//第一步 QQ登录
func sendQQAuthRequest(){
tencentOAuth = TencentOAuth(appId: kQQAPP_ID, andDelegate: self)
var permissions = [kOPEN_PERMISSION_GET_INFO,kOPEN_PERMISSION_GET_USER_INFO,kOPEN_PERMISSION_GET_SIMPLE_USER_INFO]
tencentOAuth.authorize(permissions, inSafari: false)
}
2，授权登录
如上
3。回调
//第二步 登录成功回调
func tencentDidLogin() {
let accessToken = tencentOAuth.accessToken
println("accessToken:\(accessToken)") //641B23508B62392C52D6DFADF67FAA9C
getUserInfo()
}
//失败
func tencentDidNotLogin(cancelled: Bool) {
println("登录失败了")
}
//无网络
func tencentDidNotNetWork() {
println("没有网络")
}
4。获取用户信息
//第三步 获取用户信息
func getUserInfo()
{
SVProgressHUD.showWithStatus("正在获取用户信息...")
tencentOAuth.getUserInfo()
}
//第四步 在获取用户回调中获取用户信息
func getUserInfoResponse(response: APIResponse!) {
SVProgressHUD.dismissWithSuccess("获取用户信息成功", afterDelay: 1)
var dic:Dictionary = response.jsonResponse
println("dic:\(dic)")
// [is_lost: 0, figureurl: http://qzapp.qlogo.cn/qzapp/222222/C5527A2F775D9EA7C20317128FAC202B/30, vip: 0, is_yellow_year_vip: 0, province: 北京, ret: 0, is_yellow_vip: 0, figureurl_qq_1: http://q.qlogo.cn/qqapp/222222/C5527A2F775D9EA7C20317128FAC202B/40, yellow_vip_level: 0, level: 0, figureurl_1: http://qzapp.qlogo.cn/qzapp/222222/C5527A2F775D9EA7C20317128FAC202B/50, city: 海淀, figureurl_2: http://qzapp.qlogo.cn/qzapp/222222/C5527A2F775D9EA7C20317128FAC202B/100, nickname: 竹中雨滴, msg: , gender: 男, figureurl_qq_2: http://q.qlogo.cn/qqapp/222222/C5527A2F775D9EA7C20317128FAC202B/100]
refeshUserInfo(dic)
}
//第五步 刷新用户界面
func refeshUserInfo(dic : NSDictionary){
let headimgurl: String = dic["figureurl_qq_2"] as! String
let nickname: String = dic["nickname"] as! String
self.headerImg.sd_setImageWithURL(NSURL(string: headimgurl))
self.nicknameLbl.text = nickname
}
5。跳转
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
return TencentOAuth.HandleOpenURL(url)
}
func application(application: UIApplication, handleOpenURL url: NSURL) -> Bool {
return TencentOAuth.HandleOpenURL(url)
}
四，微博
1。注冊
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
WeiboSDK.registerApp(kAppKey)
return true
}2。授权登录
func sendBtnClick(sneder:UIButton)
{
sendSinaAuthRequest()
}
//第一步 微博登录
func sendSinaAuthRequest(){
var request : WBAuthorizeRequest = WBAuthorizeRequest.request() as! WBAuthorizeRequest
request.redirectURI = kRedirectURI
request.scope = "all"
request.userInfo = ["SSO_Key":"SSO_Value"]
WeiboSDK.sendRequest(request)
}3。回调
func didReceiveWeiboRequest(request: WBBaseRequest!) {
}
func didReceiveWeiboResponse(response: WBBaseResponse!) {
if response.isKindOfClass(WBAuthorizeResponse){
if (response.statusCode == WeiboSDKResponseStatusCode.Success) {
var authorizeResponse : WBAuthorizeResponse = response as! WBAuthorizeResponse
var userID = authorizeResponse.userID
var accessToken = authorizeResponse.accessToken
println("userID:\(userID)\naccessToken:\(accessToken)")
var userInfo = response.userInfo as Dictionary
NSNotificationCenter.defaultCenter().postNotificationName("SINA_CODE", object: nil, userInfo: userInfo)
}
}
}
4。获取用户信息
//第二步 通过通知得到登录后获取的用户信息
func onRecviceSINA_CODE_Notification(notification:NSNotification)
{
SVProgressHUD.showSuccessWithStatus("获取到用户信息", duration: 1)
var userinfoDic : Dictionary = notification.userInfo!
println("userInfo:\(userinfoDic)")
/*
userID:2627289515
accessToken:2.002BqnrCyY87OC80500cab28Ofqd3B
userInfo:
[uid: 2627289515, remind_in: 647057, scope: invitation_write, refresh_token: 2.002BqnrCyY87OC10f7877765yPietB,
app: {
logo = "http://ww1.sinaimg.cn/square/65745bf7jw1ea399us692j2028028glf.jpg";
name = "SDK\U5fae\U535a\U5e94\U7528demo";
},
access_token: 2.002BqnrCyY87OC80500cab28Ofqd3B, expires_in: 647057
]
*/
var userAppInfo: Dictionary<String,String> = userinfoDic["app"] as! Dictionary
refeshUserInfo(userAppInfo)
}
//第三步 刷新用户界面
func refeshUserInfo(dic : NSDictionary){
let headimgurl: String = dic["logo"] as! String
let nickname: String = dic["name"] as! String
self.headerImg.sd_setImageWithURL(NSURL(string: headimgurl))
self.nicknameLbl.text = nickname
}
5，跳转
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
return WeiboSDK.handleOpenURL(url, delegate: self)
}
func application(application: UIApplication, handleOpenURL url: NSURL) -> Bool {
return WeiboSDK.handleOpenURL(url, delegate: self)
}
五，对照分析
1。demo情况
微博demo代码工整度完爆微信。QQ。看着非常舒服，心情也不错。另外微博放在了github上面。适合pod管理。凝视也极好，微信文档写的挺不错，QQ写的简直丧心病狂，须要极度耐心才干看明确，表示非常无语，另外本三种方式授权登录的源码有偿提供，如需能够邮件mmw05@163.com联系就可以。
2，嵌入时间
微信算是非常easy嵌入SDK，QQ也还能够。微博须要注意boundID有限制。微信的逻辑算是比較冗余繁琐。从授权到获取到用户信息须要非常多接口，而QQ和微博能够直接从授权登陆回调中获取到。是比較便捷的。从上面代码能够看出来；
后记
从objective-C到Swift，苹果力求简约，但又不简单，现代化的语言，必定在性能各方面优于传统，仅仅是须要时间和很多其它的考验，作为开发人员。多一个选择，岂不更好。
附图：
基于Swift语言开发微信、QQ和微博的SSO授权登录代码分析