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 = dic["code"]
            println("code:\(value)")

            NSNotificationCenter.defaultCenter().postNotificationName("WX_CODE", object: nil, userInfo: dic)

        }
    }

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 = NSData(contentsOfURL: requestURL, options: NSDataReadingOptions(), error: nil)

            dispatch_async(dispatch_get_main_queue(), {

                var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers, error: nil) as! NSDictionary

                println("Recevice Token: \(jsonResult)")

                SVProgressHUD.showSuccessWithStatus("获取到Token和openid", duration: 1)

                let token: String = jsonResult["access_token"] as! String
                let openid: String = jsonResult["openid"] as! String

                self.getUserInfo(token, openid: openid)

            })
        })
    }

    //获取用户信息 第四步
    func getUserInfo(token :String,openid:String){

        // https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID
        var requestUrl = "https://api.weixin.qq.com/sns/userinfo?

access_token=\(token)&openid=\(openid)"

        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), {

            var requestURL: NSURL = NSURL(string: requestUrl)!
            var data = NSData(contentsOfURL: requestURL, options: NSDataReadingOptions(), error: nil)

            dispatch_async(dispatch_get_main_queue(), {

                var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers, error: nil) as! NSDictionary

                println("Recevice UserInfo: \(jsonResult)")

                /*
                Recevice UserInfo:
                {
                city = Chaoyang;
                country = CN;
                headimgurl = "http://wx.qlogo.cn/mmopen/FrdAUicrPIibcpGzxuD0kjfssQogj3icL8QTJQYUCLpgzSnvY6rJFGORreicPUiaPCzojwNlsXq4ibbc8e3gGFricWqJU5ia7ibicLVhfT/0";
                language = "zh_CN";
                nickname = "\U706b\U9505\U6599";
                openid = "oyAaTjkR8T6kcKWyA4VPYDa_Wy_w";
                privilege =     (
                );
                province = Beijing;
                sex = 1;
                unionid = "o1A_Bjg52MglJiEjhLmB8SyYfZIY";
                }
                */

                SVProgressHUD.showSuccessWithStatus("获取到用户信息", duration: 1)

                let headimgurl: String = jsonResult["headimgurl"] as! String
                let nickname: String = jsonResult["nickname"] as! String

                self.headerImg.sd_setImageWithURL(NSURL(string: headimgurl))
                self.nicknameLbl.text = nickname
            })
        })
    }

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：