IOS网络篇------微博三方登录

大家在使用一款新的软件时都会让注册,不过你嫌账号太多麻烦也可以点击下面的第三方登录,例如微博、微信、QQ、人人等等.以微博三方登录为例,利用微博开放平台暴露的接口来实现一下微博的三方登录

1.首先打开网页登录http://open.weibo.com

2.接下来是在文档中找到对应的授权接口

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2.png

3.png

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注:
①.这个请求的的地址不能拿AF来请求,只能是通过webView加载
②.为了避免三方登陆接触到自身的用户名和密码,通过网页解决这个问题,所以更安全,登录成功信息通过回调查看是否登陆成功

3.请求参数找必选的(client_id, redirect_uri)
注:地址与参数之间用?连接参数与参数之间用&
eg:https://api.weibo.com/oauth2/authorize?client_id=&redirect_uri=http://www.xxxxx.com

4.在我的应用中创建应用,提取App Key和App Secret
eg:
App Key：123456789
App Secret：a6a6e8e254c3c13372fd6b556c1b4837
https://api.weibo.com/oauth2/authorize?client_id=123456789&redirect_uri=http://www.xxxxx.com

5.通过网页加载url进行测试
授权错误

5.png

解决办法:

6.png

请求正确:

7.png

6.实现webView代理协议,在开始加载时查看请求URL的的详细信息

#import "LoginViewController.h"
#import "WeiboTool.h"

#define AccountPath  [NSHomeDirectory() stringByAppendingString:@"Documents/Account.plist"]
@interface LoginViewController ()
@end

@implementation LoginViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIWebView *wv = [[UIWebView alloc]initWithFrame:self.view.bounds];
    wv.delegate = self;
    [self.view addSubview:wv];
    
    NSURL *url = [NSURL URLWithString:@"https://api.weibo.com/oauth2/authorize?client_id=123456789&redirect_uri=http://www.xxxxx.com"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [wv loadRequest:request];
    
}
//拦截URL请求，拦截带code的URL
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
    
    NSString *path = [request.URL description];
   
    NSLog(@"-------%@",path);
    //调用该方法相当于调用rangeOfString看看里面是否有code
    if ([path containsString:@"code"]) {
        NSString *code = [[path componentsSeparatedByString:@"="]lastObject];
        [WeiboTool requestTokenWithCode:code andWithBlock:^(id obj) {
            
            NSDictionary *dic = obj;
            //用户登录后一次后不再进行登录
            [dic writeToFile:AccountPath atomically:YES];
            NSLog(@"登录成功！");
            [self dismissViewControllerAnimated:YES completion:nil];
        }];
        return NO;
    }
    return YES;
}

@end

7.创建工具类利用AF进行请求

8.png

WeiboTool.h

#import 
#import "AFNetworking.h"

@interface WeiboTool : NSObject

+ (void)requestTokenWithCode:(NSString *)code andWithBlock:(void(^)(id obj))datablock;

@end

WeiboTool.m

#import "WeiboTool.h"

@implementation WeiboTool

+(void)requestTokenWithCode:(NSString *)code andWithBlock:(void (^)(id obj))datablock {
    NSString *path = @"https://api.weibo.com/oauth2/access_token";
    NSDictionary *params = @{@"client_id":@"123456789",
                             @"client_secret":@"a6a6e8e254c3c13372fd6b556c1b4837",
                             @"grant_type":@"authorization_code",
                             @"redirect_uri":@"http://www.baidu.com",
                             @"code":code};
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    [manager POST:path parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseObject options:0 error:nil];
        NSLog(@"%@",dic);
        datablock(dic);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"请求失败：%@",error);
    }];
    
}

@end

8.用code换token(令牌)最终在日志显示返回数据和文档一致

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