OAuth Authorization Callback Accesstoken

For details, see Sina official documentsHttp://open.weibo.com/wiki/Oauth2/access_token Concrete Implementation

The first step is to open the callback page

Macro Definition client_id

#define KCLIENTID @ "XXX"

Macro Definition Callback Address

#define Kredirect_uri @"xxx"

Macro Definition Client_secret

#define Kclient_secret @ "XXX"

1. Add WebView

UIWebView *webview = [[UIWebView alloc] initWithFrame:self.view.bounds];

Webview.delegate = self;

[Self.view Addsubview:webview];

2. Loading Authorization page

NSString *oauthpath = [NSString stringwithformat:@ "https://api.weibo.com/oauth2/authorize?client_id=%@& redirect_uri=%@ ", Kclientid, Kredirect_uri];

Nsurl *url = [Nsurl Urlwithstring:oauthpath];

Nsurlrequest *request = [Nsurlrequest Requestwithurl:url];

[WebView Loadrequest:request];

/**

* This method is called before WebView sends a request, asking if the agent can load the page (request)

*

* @return YES: Can load page, no: Can not load page

*/

-(BOOL) WebView: (UIWebView *) WebView shouldstartloadwithrequest: (nsurlrequest *) Request Navigationtype: ( Uiwebviewnavigationtype) Navigationtype {

Second step to get request parameters

1. The absolute path of the URL returned by the request HTTP://WWW.BAIDU.COM/?CODE=A0872F25A06ACF714A4067266A2EEAF4

NSString *requesturlpath = Request. url.absolutestring;

2. Access to the scope of the code=

Nsrange range = [Requesturlpath rangeofstring:@ "? code="];

3. If found in Requesturlpath? code= to intercept

if (range.length) {//if (range.location! = Nsnotfound) Same as Left

Add the code= length to the code= position? string after code=

int loc = range.location + range.length;

NSString *code = [Requesturlpath substringfromindex:loc];

The third step is to get the Accesstoken by the post transfer parameter body

Afnetworking Frame

　　Create a Request Management object

Afhttprequestoperationmanager *manager = [Afhttprequestoperationmanager manager];

//Post mode access needs to pass the parameter body, stitching the parameters that need to be passed

nsmutabledictionary *askparams = [nsmutabledictionary dictionary];

askparams[@ "client_id"] = Kclientid;

askparams[@ "Client_secret"] = Kclient_secret;

askparams[@ "Grant_type"] = @ "Authorization_code";

askparams[@ "Code" = code;

askparams[@ "Redirect_uri"] = Kredirect_uri;

//Send POST request

[manager post:@ "Https://api.weibo.com/oauth2/access_token" Parameters:askparams success:^ ( Afhttprequestoperation *operation, id responseobject) {

Xylog (@ "%@--responseobject", responseobject);

} failure:^ (Afhttprequestoperation *operation, Nserror *error) {

Xylog (@ "%@--error", error);

}];

}

return YES;

}

The parameters for the post request to be stitched include

/**

client_idString The Appkey that is assigned when the application is applied.

Client_secretString The Appsecret that is assigned when the application is applied.

Grant_typetype of string request, fill in Authorization_code

Code string calls the code value obtained by authorize.

The Redirect_uristring callback address needs to match the callback address in the registration application.

*/(see Http://open.weibo.com/wiki/Oauth2/access_token)

The return value example is as follows

{

"Access_token": "Access_token",

"Expires_in": 1234,

"Remind_in": "798114",

"UID": "12341234"

}

OAuth Authorization Callback Accesstoken