AFNetworking 2.5.0版本的使用

http://cocoadocs.org/docsets/AFNetworking/2.5.0/

1. 下载源码并进行编译

2. 判断当前是否有网络,基准网址为 http://baidu.com/

源码:

可以用来监测WWAN或者WiFi或者断网状态;)

    // 基准baseURL
    NSURL *baseURL                         = [NSURL URLWithString:@"http://baidu.com/"];
    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];
    NSOperationQueue *operationQueue       = manager.operationQueue;
    [manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        switch (status) {
            case AFNetworkReachabilityStatusReachableViaWWAN:
            case AFNetworkReachabilityStatusReachableViaWiFi:
                [operationQueue setSuspended:NO];
                
                // 此处可以发送有网络通知
                NSLog(@"有网络");
                
                break;
            case AFNetworkReachabilityStatusNotReachable:
            default:
                [operationQueue setSuspended:YES];
                
                // 此处可以发送断网通知
                NSLog(@"断网了");
                
                break;
        }
    }];
    
    // 开始监测网络
    [manager.reachabilityManager startMonitoring];

3. 不带参数的GET请求

源码:

    // 初始化网址
    NSString *requestAddress = 
        @"http://api.openweathermap.org/data/2.5/forecast/daily?lat=39.88293652833437&lon=116.4621119300779&lang=zh_cn";
    
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    
    // 不带参数的GET请求
    [manager GET:requestAddress
      parameters:nil
         success:^(AFHTTPRequestOperation *operation, id responseObject) {
             NSLog(@"%@", responseObject);
    }
         failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             NSLog(@"%@", error);
    }];

4. 带参数GET的请求

源码:

    // 初始化网址
    NSString *requestAddress = 
        @"http://api.openweathermap.org/data/2.5/forecast/daily";
    
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    
    // 参数的GET请求
    [manager GET:requestAddress
      parameters:@{@"lat"  : @"39.88293652833437",
                   @"lon"  : @"116.4621119300779",
                   @"lang" : @"zh_cn"}
         success:^(AFHTTPRequestOperation *operation, id responseObject) {
             NSLog(@"%@", responseObject);
    }
         failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             NSLog(@"%@", error);
    }];

5. 不带参数的POST请求

源码:

    // 初始化网址
    NSString *cityName       = [@"北京" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSString *requestAddress = 
        [NSString stringWithFormat:@"http://apis.haoservice.com/weather?cityname=%@&key=1d309cc633984df791b51f48ddf09d4b", cityName];
    
    AFHTTPRequestOperationManager *manager            = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer.acceptableContentTypes = 
        [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];

    // 不带参数的POST请求
    [manager POST:requestAddress
       parameters:nil
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              NSLog(@"%@", responseObject);
          }
          failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              NSLog(@"%@", error);
          }];

6. 带参数的POST请求

源码:

    // 初始化网址
    NSString *cityName       = [@"北京" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSString *requestAddress = 
        [NSString stringWithFormat:@"http://apis.haoservice.com/weather"];
    
    AFHTTPRequestOperationManager *manager            = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer.acceptableContentTypes = 
        [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];

    // 带参数的POST请求
    [manager POST:requestAddress
       parameters:@{@"cityname" : cityName,
                    @"key"      : @"1d309cc633984df791b51f48ddf09d4b"}
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              NSLog(@"%@", responseObject);
          }
          failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              NSLog(@"%@", error);
          }];

附录:

基于URL-form-encodes Body方式的POST请求

    // 初始化网址
    NSString *cityName       = [@"北京" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSString *requestAddress = 
        [NSString stringWithFormat:@"http://apis.haoservice.com/weather"];
    
    AFHTTPRequestOperationManager *manager            = [AFHTTPRequestOperationManager manager];
    // 创建 URL-form-encodes HTTP message bodies
    manager.requestSerializer                         = [AFJSONRequestSerializer serializer];
    // 接受的数据类型
    manager.responseSerializer.acceptableContentTypes = 
        [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];


    // 带参数的POST请求
    [manager POST:requestAddress
       parameters:@{@"cityname" : cityName,
                    @"key"      : @"1d309cc633984df791b51f48ddf09d4b"}
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              NSLog(@"%@", responseObject);
          }
          failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              NSLog(@"%@", error);
          }];

7. 文件下载

//
//  ViewController.m
//  AFNetworking2.5.0
//
//  Created by XianMingYou on 15/2/14.
//  Copyright (c) 2015年 XianMingYou. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // 定义一个progress指针
    NSProgress *progress;
    
    // 创建一个URL链接
    NSURL *url = [NSURL URLWithString:@"http://41.duote.com.cn/2345explorer.exe"];
    
    // 初始化一个请求
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    // 获取一个Session管理器
    AFHTTPSessionManager *session = [AFHTTPSessionManager manager];
    
    // 开始下载任务
    NSURLSessionDownloadTask *downloadTask = 
        [session downloadTaskWithRequest:request
                                progress:&progress
                             destination:^NSURL *(NSURL *targetPath, NSURLResponse *response)
         {
             // 拼接一个文件夹路径
             NSURL *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory
                                                                                   inDomain:NSUserDomainMask
                                                                          appropriateForURL:nil
                                                                                     create:NO
                                                                                      error:nil];
             
             // 根据网址信息拼接成一个完整的文件存储路径并返回给block
             return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
             
         } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error)
         {
             // 结束后移除掉这个progress
             [progress removeObserver:self
                           forKeyPath:@"fractionCompleted"
                              context:nil];
         }];
    
    // 设置这个progress的唯一标示符
    [progress setUserInfoObject:@"someThing" forKey:@"Y.X."];
    [downloadTask resume];
    
    // 给这个progress添加监听任务
    [progress addObserver:self
               forKeyPath:@"fractionCompleted"
                  options:NSKeyValueObservingOptionNew
                  context:nil];
}

- (void)observeValueForKeyPath:(NSString *)keyPath
                      ofObject:(id)object
                        change:(NSDictionary *)change
                       context:(void *)context {
    if ([keyPath isEqualToString:@"fractionCompleted"] && [object isKindOfClass:[NSProgress class]]) {
        NSProgress *progress = (NSProgress *)object;
        NSLog(@"Progress is %f", progress.fractionCompleted);
    }
}

@end

8. 文件上传

单文件上传 - (没有办法做试验演示)

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];

NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];

NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
    if (error) {
        NSLog(@"Error: %@", error);
    } else {
        NSLog(@"Success: %@ %@", response, responseObject);
    }
}];
[uploadTask resume];

多文件上传 - (没有办法做试验演示)

NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"file://path/to/image.jpg"] name:@"file" fileName:@"filename.jpg" mimeType:@"image/jpeg" error:nil];
    } error:nil];

AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
NSProgress *progress = nil;

NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
    if (error) {
        NSLog(@"Error: %@", error);
    } else {
        NSLog(@"%@ %@", response, responseObject);
    }
}];

[uploadTask resume];

9. Request Serialization

Request serializers create requests from URL strings, encoding parameters as either a query string or HTTP body.

请求序列化是为了从URL字符串创建出编码后的参数,或者是序列字典,或者是HTTP实体.

NSString *URLString = @"http://example.com";
NSDictionary *parameters = @{@"foo": @"bar", @"baz": @[@1, @2, @3]};

QUERY STRING PARAMETER ENCODING

字符串序列编码

[[AFHTTPRequestSerializer serializer] requestWithMethod:@"GET" URLString:URLString parameters:parameters error:nil];

GET请求 http://example.com?foo=bar&baz[]=1&baz[]=2&baz[]=3

URL FORM PARAMETER ENCODING

URL表单编码

[[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];

POST请求 http://example.com/
Content-Type: application/x-www-form-urlencoded

foo=bar&baz[]=1&baz[]=2&baz[]=3

JSON PARAMETER ENCODING

JSON编码

[[AFJSONRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];

POST请求 http://example.com/
Content-Type: application/json

{"foo": "bar", "baz": [1,2,3]}

注: POST分为JSON或者URL表单编码