1> GET 请求：
NSString *url = @"[http://gank.io/api/history/content/2/1](http://gank.io/api/history/content/2/1)";
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
[manager GET:url
parameters:nil
progress:^(NSProgress * _Nonnull downloadProgress)
{
}
success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
NSLog(@"这里打印请求成功要做的事");
// 获取所有数据报头信息
NSHTTPURLResponse *HTTPResponse = (NSHTTPURLResponse *)task.response;
NSDictionary *fields = [HTTPResponse allHeaderFields];// 原生NSURLConnection写法
NSLog(@"fields = %@", [fields description]);
// 获取cookie方法1
NSArray *cookies = [NSHTTPCookiecookiesWithResponseHeaderFields:fields forURL:[NSURLURLWithString:url]];
for(NSHTTPCookie *cookie in cookies)
{
NSLog(@"cookie1 －> %@", cookie);
}
// 获取cookie方法2
NSString *cookieString = [[HTTPResponse allHeaderFields] valueForKey:@"Set-Cookie"];
NSLog(@"cookie2 －> %@", cookieString);
// 获取cookie方法3
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStoragesharedHTTPCookieStorage];
for(NSHTTPCookie *cookie in [cookieJar cookies])
{
NSLog(@"cookie3 －> %@", cookie);
}
}
failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
{
NSLog(@"%@",error);// 这里打印错误信息
}];
2> POST请求：
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
NSMutableDictionary *parameters = @{@"":@"", @"":@""};
[manager POST:URL
parameters:parameters
progress:^(NSProgress * _Nonnull uploadProgress)
{
}
success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
}
failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
{
}];
3> 下载
// 1.创建管理者对象
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
manage.requestSerializer = [AFHTTPRequestSerializerserializer];
manage.requestSerializer.stringEncoding = NSUTF8StringEncoding;
manage.requestSerializer.timeoutInterval = 10;
manage.responseSerializer = [AFHTTPResponseSerializerserializer];
manage.responseSerializer.stringEncoding = NSUTF8StringEncoding;
manage.responseSerializer.acceptableContentTypes = [NSSetsetWithObject:@"text/html"];
// 2.确定请求的URL地址
NSURL *url = [NSURLURLWithString:@""];
// 3.创建请求对象
NSURLRequest *request = [NSURLRequestrequestWithURL:url];
// 下载任务
NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request
progress:^(NSProgress * _Nonnull downloadProgress)
{
// 打印下下载进度
NSLog(@"%lf",1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount);
}
destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response)
{
// 下载地址
NSLog(@"默认下载地址:%@",targetPath);
// 设置下载路径，通过沙盒获取缓存地址，最后返回 NSURL对象
NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject];
return [NSURLURLWithString:filePath];
}
completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error)
{
// 下载完成调用的方法
NSLog(@"下载完成：");
NSLog(@"%@--%@",response,filePath);
}];
// 开始启动任务
[task resume];
4> 上传
第一种方法是通过工程中的文件进行上传
// 1.创建管理者对象
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
// 2.上传文件
NSDictionary *dict = @{@"":@""};
NSString *urlString = @"";
[manager POST:urlString
parameters:dict
constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData)
{
// 上传文件参数
UIImage *iamge = [UIImageimageNamed:@"123.png"];
NSData *data = UIImagePNGRepresentation(iamge);
// 这个就是参数
[formData appendPartWithFileData:data name:@"file"fileName:@"123.png"mimeType:@"image/png"];
}
progress:^(NSProgress * _Nonnull uploadProgress)
{
// 打印下上传进度
NSLog(@"%lf", 1.0 * uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);
}
success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
// 请求成功
NSLog(@"请求成功：%@",responseObject);
}
failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
{
// 请求失败
NSLog(@"请求失败：%@",error);
}];
第二种是通过URL来获取路径，进入沙盒或者系统相册等等
// 1.创建管理者对象
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
// 2.上传文件
NSDictionary *dict = @{@"":@""};
NSString *urlString = @"";
[manager POST:urlString
parameters:dict
constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData)
{
[formData appendPartWithFileURL:[NSURLfileURLWithPath:@"文件地址"] name:@"file"fileName:@"1234.png"mimeType:@"application/octet-stream"error:nil];
}
progress:^(NSProgress * _Nonnull uploadProgress)
{
// 打印下上传进度
NSLog(@"%lf",1.0 * uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);
}
success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject)
{
// 请求成功
NSLog(@"请求成功：%@", responseObject);
}
failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error)
{
// 请求失败
NSLog(@"请求失败：%@", error);
}];
5> 设置 Cookie 中的值
方法1：
AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];
[manager.requestSerializersetHTTPShouldHandleCookies:YES];
[manager.requestSerializer setValue:[NSString stringWithFormat:@"%@=%@", [cookie name], [cookie value]] forHTTPHeaderField:@"Cookie"];
方法2：
NSMutableDictionary *cookieProperties = [NSMutableDictionarydictionary];
[cookieProperties setObject:@"username"forKey:NSHTTPCookieName];
[cookieProperties setObject:@"my ios cookie"forKey:NSHTTPCookieValue];
[cookieProperties setObject:@"[api.skyfox.org](http://api.skyfox.org/)"forKey:NSHTTPCookieDomain];
[cookieProperties setObject:@"[api.skyfox.org](http://api.skyfox.org/)"forKey:NSHTTPCookieOriginURL];
[cookieProperties setObject:@"/"forKey:NSHTTPCookiePath];
[cookieProperties setObject:@"0"forKey:NSHTTPCookieVersion];
[cookieProperties setObject:[NSDatedateWithTimeIntervalSinceNow:60*60] forKey:NSHTTPCookieExpires];//设置失效时间
[cookieProperties setObject:@"0"forKey:NSHTTPCookieDiscard]; //设置sessionOnly
NSHTTPCookie *cookie = [NSHTTPCookiecookieWithProperties:cookieProperties];
[[NSHTTPCookieStoragesharedHTTPCookieStorage] setCookie:cookie];
6> 清空Cookie
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStoragesharedHTTPCookieStorage];
NSArray *cookieArray = [NSArrayarrayWithArray:[cookieJar cookies]];
for(id obj in cookieArray)
{
[cookieJar deleteCookie:obj];
}
7> Cookie的本地缓存策略
// NSHTTPCookieAcceptPolicyAlways: 保存所有cookie，这个是默认值
// NSHTTPCookieAcceptPolicyNever: 不保存任何响应头中的cookie
// NSHTTPCookieAcceptPolicyOnlyFromMainDocumentDomain: 只保存域请求匹配的cookie
[[NSHTTPCookieStoragesharedHTTPCookieStorage]setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];
8> 手动保存和加载 Cookie
// 保存Cookie
- (void)saveCookies
{
NSData *cookiesData = [NSKeyedArchiverarchivedDataWithRootObject:[[NSHTTPCookieStoragesharedHTTPCookieStorage] cookies]];
NSUserDefaults *defaults = [NSUserDefaultsstandardUserDefaults];
[defaults setObject:cookiesData forKey:@"org.skyfox.cookie"];
[defaults synchronize];
}
// 加载Cookie 一般都是app刚刚启动的时候
- (void)loadCookies
{
NSArray *cookies = [NSKeyedUnarchiverunarchiveObjectWithData:[[NSUserDefaultsstandardUserDefaults] objectForKey:@"org.skyfox.cookie"]];
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStoragesharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in cookies)
{
[cookieStorage setCookie:cookie];
}
}
9> 检查网络状态
（1）开启网络监听，一般在程序启动时调用，可以放在 AppDelegate 中
[[AFNetworkReachabilityManagersharedManager] startMonitoring];
（2）在需要监测网络的地方调用该方法去获取当前网络状态
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManagersharedManager];
// 枚举里面四个状态 分别对应未知无网络数据 WiFi
// typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {
// AFNetworkReachabilityStatusUnknown = -1, 未知
// AFNetworkReachabilityStatusNotReachable = 0, 无网络
// AFNetworkReachabilityStatusReachableViaWWAN = 1, 蜂窝数据网络
// AFNetworkReachabilityStatusReachableViaWiFi = 2, WiFi
// };
[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status)
{
// 这里是监测到网络改变的block
switch (status)
{
caseAFNetworkReachabilityStatusUnknown:
NSLog(@"未知网络状态");
break;
caseAFNetworkReachabilityStatusNotReachable:
NSLog(@"无网络");
break;
caseAFNetworkReachabilityStatusReachableViaWWAN:
NSLog(@"蜂窝数据网");
break;
caseAFNetworkReachabilityStatusReachableViaWiFi:
NSLog(@"WiFi网络");
break;
default:
break;
}
}];
注：如果启动就去检测有可能得到的是 status == AFNetworkReachabilityStatusUnknown，建议延迟在调用或者 在收到监听网络状态回调以后再取
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