AFNetWorking的使用方法

AFN需要注意的是,默认提交请求的数据是二进制的,返回格式是JSON

请求格式

AFHTTPRequestSerializer            二进制格式
AFJSONRequestSerializer            JSON格式
AFPropertyListRequestSerializer    PList(是一种特殊的XML,解析起来相对容易)

返回格式

AFHTTPResponseSerializer           二进制格式
AFJSONResponseSerializer           JSON格式
AFXMLParserResponseSerializer      XML,只能返回XMLParser,还需要自己通过代理方法解析
AFXMLDocumentResponseSerializer (Mac OS X)
AFPropertyListResponseSerializer   PList格式
AFImageResponseSerializer          Image格式
AFCompoundResponseSerializer       组合格式

//网络监测

//AFN提供了四种网络状态：

/*

AFNetworkReachabilityStatusUnknown = -1, // 未知

AFNetworkReachabilityStatusNotReachable = 0, // 无连接

AFNetworkReachabilityStatusReachableViaWWAN = 1, // 3G 花钱

AFNetworkReachabilityStatusReachableViaWiFi = 2, // 局域网络,不花钱

*/

//判断网络连接状态的方法:

- (void)netWorkStatues

{

//创建AFNetworkReachabilityManager

//AFNetworkReachabilityManager *manager = [[AFNetworkReachabilityManager alloc] init];

//获得AFNetworkReachabilityManager
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];

//开启网络监测
[manager startMonitoring];

//监测到网络状态更改后的block回调
[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

switch (status)
{
case -1:
{
//未知网络
NSLog(@"当前网络为 未知网络");
}
break;
case 0:
{
//无网络
NSLog(@"当前无网络连接");
}
break;

case 1:
{
//移动网络
NSLog(@"当前网络为 蜂窝移动网络");
}
break;

case 2:
{
//WiFi
NSLog(@"当前网络为 无线网络");
}
break;

default:
break;
}

}];

}

//发送GET请求

//所有的网络请求都是由AFHTTPRequestOperationManager发起的

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

NSString *urlStr = @"http://localhost:8080/RoyLoginAndRegisterService/LoginAndRegisterServlet";

//假如URL有中文需要编码(ios 9.0 以前可用)
//NSString *encodeStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//iOS 9.0以后可用的编码方法
// NSString *encodeStr = [urlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

//1，假如提交的数据格式不是二进制，需要申明请求的数据格式
//申明请求的数据格式，默认二进制格式

// manager.requestSerializer = [AFHTTPRequestSerializer serializer];

//假如请求的数据格式是json
//manager.requestSerializer = [AFJSONRequestSerializer serializer];

//2，获取的数据格式默认支持json，所以假如获取的数据格式不是json，需要申明一下

//申明获取的数据格式为二进制格式
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

//添加一种可以接受的数据格式
//manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", nil];

//设置请求头
//[manager.requestSerializer setValue:@"image/jpg" forHTTPHeaderField:@"Content-Type"];

/*
//1,无参数的get请求

//发送get请求的方法
//第一个参数：请求的资源路径（URL）的字符串
//第二个参数：请求的参数
//第三个参数：成功后的回调
//第四个参数：失败后的回调
[manager GET:urlStr parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

NSLog(@"请求成功了 %@",operation.responseString);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

NSLog(@">>>>>> %@",operation.responseString);

NSLog(@"请求失败了:%@",error.localizedDescription);
}];
*/

//2,有参数的get请求

//AFN的get请求，参数是按照键值的方式存放在以一个字典，请求的parameters参数就是这个参数字典
NSDictionary *parameterDic = @{@"name":@"roy",@"psw":@"123456",@"command":@"1"};

[manager GET:urlStr parameters:parameterDic success:^(AFHTTPRequestOperation *operation, id responseObject) {

NSLog(@"====== %@",operation.responseString);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

NSLog(@"error ====== %@",error.localizedDescription);
}];

//发送POST请求

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

//申明一下接收的数据格式为二进制数据
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

NSString *urlStr = @"http://localhost:8080/RoyLoginAndRegisterService/LoginAndRegisterServlet";

//1,普通的表单数据

//post请求的参数部分也是按照键值进行上传的
NSDictionary *parameterDic = @{@"name":@"roy",@"psw":@"123456",@"command":@"1"};

//发送post请求
[manager POST:urlStr parameters:parameterDic success:^(AFHTTPRequestOperation *operation, id responseObject) {

NSLog(@">>>>>>> %@",operation.responseString);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

NSLog(@"err === %@",error.localizedDescription);
}];

// 2,multi-part 数据请求（不光是表单参数，还有额外的文件数据，比如新浪微博的发送微博和图片的接口）

UIImage *image = [UIImage imageNamed:@"xxx.png"];

NSData *imgData = UIImagePNGRepresentation(image);

//第一个block块提供了一个AFMultipartFormData参数，就是用来提交额外文件数据（multi-part）的参数
[manager POST:urlStr parameters:parameterDic constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

//往formData参数后边追加额外的文件数据
//第一个参数：文件数据
//第二个参数：上传的文件数据，对应服务器请求参数的字段名
//第三个参数：上传的文件名。注意：文件名不可为空，并且最好文件的后缀不要省去，后缀根据上传的文件格式而定
//第四个参数：上传文件的格式，不可为空。参考请求头的Content-Type字段。比如：image/jpg
[formData appendPartWithFileData:imgData name:@"pic" fileName:@"xxx.png" mimeType:@"image/png"];

//[formData appendPartWithFormData:<#(NSData *)#> name:<#(NSString *)#>]

} success:^(AFHTTPRequestOperation *operation, id responseObject) {

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

}];

}

//上传请求UPLOAD

//创建AFHTTPSessionManager

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

//[manager.requestSerializer setValue:@"image/png" forHTTPHeaderField:@"Content-Type"];

//申明获取的数据格式
manager.responseSerializer = [AFHTTPResponseSerializer serializer];

NSURL *url = [NSURL URLWithString:@"http://localhost:8080/RoyUploadFileServer/RoyUploadServlet"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

//设置请求的方式（必填）
[request setHTTPMethod:@"POST"];

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"123" ofType:@"mp4"];

NSData *imgData = [NSData dataWithContentsOfFile:filePath];

//设置执行上传任务时回调的block，在这个回调里边可以获取上传的进度信息
[manager setTaskDidSendBodyDataBlock:^(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend) {

//回到主队列，进行进度刷新
dispatch_async(dispatch_get_main_queue(), ^{

_slider.value = (float)totalBytesSent/totalBytesExpectedToSend;

});

NSLog(@"当前线程是%@",[[NSThread currentThread] isMainThread]?@"主线程":@"分线程");

}];

//upload请求，并且获取上传的任务
//第一个参数：请求对象
//第二个参数：上传的数据
//第三个参数:进度信息
//第四个参数：结束的回调block

NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromData:imgData progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {

//把response转化为NSHTTPURLResponse类型
NSHTTPURLResponse *newResponse = (NSHTTPURLResponse *)response;

NSLog(@">>>>> %d  %@ %@",newResponse.statusCode,responseObject,error.localizedDescription);

NSLog(@"====== %@",[[NSString alloc] initWithData:(NSData *)responseObject encoding:NSUTF8StringEncoding]);

}];

//[manager uploadTaskWithRequest:<#(NSURLRequest *)#> fromFile:<#(NSURL *)#> progress:<#(NSProgress *__autoreleasing *)#> completionHandler:<#^(NSURLResponse *response, id responseObject, NSError *error)completionHandler#>]

//开始执行任务
[uploadTask resume];

//下载DOWNLOAD请求

/*

这样也可以进行下载任务

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

[manager downloadTaskWithRequest:<#(NSURLRequest *)#> progress:<#(NSProgress *__autoreleasing *)#> destination:<#^NSURL *(NSURL *targetPath, NSURLResponse *response)destination#> completionHandler:<#^(NSURLResponse *response, NSURL *filePath, NSError *error)completionHandler#>]
*/
NSURL *url = [NSURL URLWithString:@"http://localhost:8080/RoyUploadFileServer/ybsh.mov"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

//创建AFHTTPRequestOperation，并且初始化请求
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

NSString *filePath = [NSString stringWithFormat:@"%@/Documents/download.mov",NSHomeDirectory()];

NSLog(@"filePath === %@",filePath);

// 设置文件保存路径
[operation setOutputStream:[NSOutputStream outputStreamToFileAtPath:filePath append:YES]];

[operation setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {

NSLog(@"当前线程是%@",[[NSThread currentThread] isMainThread]?@"主线程":@"分线程");

_slider.value = (float)totalBytesRead / totalBytesExpectedToRead;

}];

//设置操作执行结束后的回调block
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

NSLog(@"下载成功了");

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

NSLog(@"下载失败了");
}];

//开始执行操作
[operation start];