新版AFNetworking2.5使用
2015-06-10 16:19
465 查看
官网下载2.5版本：http://afnetworking.com/
此文章是基于AFNetworking2.5版本的，需要看AFNetworking2.0版本的请看上一篇文章：AFNetworking2.0使用
1.检测网络状态
[objc] view
plaincopy
+ (void)netWorkStatus
{
/**
AFNetworkReachabilityStatusUnknown = -1, // 未知
AFNetworkReachabilityStatusNotReachable = 0, // 无连接
AFNetworkReachabilityStatusReachableViaWWAN = 1, // 3G 花钱
AFNetworkReachabilityStatusReachableViaWiFi = 2, // WiFi
*/
// 如果要检测网络状态的变化,必须用检测管理器的单例的startMonitoring
[[AFNetworkReachabilityManager sharedManager] startMonitoring];
// 检测网络连接的单例,网络变化时的回调方法
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
NSLog(@"%ld", status);
}];
}
可以用来监测WWAN或者WiFi或者断网状态;)
2.JSON方式获取数据
[objc] view
plaincopy
+ (void)JSONDataWithUrl:(NSString *)url success:(void (^)(id json))success fail:(void (^)())fail;
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *dict = @{@"format": @"json"};
// 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情
[manager GET:url parameters:dict success:^(AFHTTPRequestOperation *operation,
id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
3.xml方式获取数据
[objc] view
plaincopy
+ (void)XMLDataWithUrl:(NSString *)urlStr success:(void (^)(id xml))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// 返回的数据格式是XML
manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
NSDictionary *dict = @{@"format": @"xml"};
// 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情
[manager GET:urlStr parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
4.post提交json数据
[objc] view
plaincopy
+ (void)postJSONWithUrl:(NSString *)urlStr parameters:(id)parameters success:(void (^)(id responseObject))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// 设置请求格式
manager.requestSerializer = [AFJSONRequestSerializer serializer];
// 设置返回格式
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager POST:urlStr parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
// NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
5.下载文件
[objc] view
plaincopy
+ (void)sessionDownloadWithUrl:(NSString *)urlStr success:(void (^)(NSURL *fileURL))success fail:(void (^)())fail
{
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];
NSString *urlString = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
// 指定下载文件保存的路径
// NSLog(@"%@ %@", targetPath, response.suggestedFilename);
// 将下载文件保存在缓存路径中
NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *path = [cacheDir stringByAppendingPathComponent:response.suggestedFilename];
// URLWithString返回的是网络的URL,如果使用本地URL,需要注意
// NSURL *fileURL1 = [NSURL URLWithString:path];
NSURL *fileURL = [NSURL fileURLWithPath:path];
// NSLog(@"== %@ |||| %@", fileURL1, fileURL);
if (success) {
success(fileURL);
}
return fileURL;
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
NSLog(@"%@ %@", filePath, error);
if (fail) {
fail();
}
}];
[task resume];
}
6.文件上传－自定义上传文件名
[objc] view
plaincopy
+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL fileName:(NSString *)fileName fileType:(NSString *)fileTye success:(void (^)(id responseObject))success fail:(void (^)())fail
{
// 本地上传给服务器时,没有确定的URL,不好用MD5的方式处理
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
//@"http://localhost/demo/upload.php"
[manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];
// 要上传保存在服务器中的名称
// 使用时间来作为文件名 2014-04-30 14:20:57.png
// 让不同的用户信息,保存在不同目录中
// NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// // 设置日期格式
// formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
// NSString *fileName = [formatter stringFromDate:[NSDate date]];
//@"image/png"
[formData appendPartWithFileURL:fileURL name:@"uploadFile" fileName:fileName mimeType:fileTye error:NULL];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (fail) {
fail();
}
}];
}
7.文件上传－随机生成文件名
[objc] view
plaincopy
+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL success:(void (^)(id responseObject))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// AFHTTPResponseSerializer就是正常的HTTP请求响应结果:NSData
// 当请求的返回数据不是JSON,XML,PList,UIImage之外,使用AFHTTPResponseSerializer
// 例如返回一个html,text...
//
// 实际上就是AFN没有对响应数据做任何处理的情况
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
// formData是遵守了AFMultipartFormData的对象
[manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// 将本地的文件上传至服务器
// NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];
[formData appendPartWithFileURL:fileURL name:@"uploadFile" error:NULL];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
// NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
//
// NSLog(@"完成 %@", result);
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"错误 %@", error.localizedDescription);
if (fail) {
fail();
}
}];
AFNetworking 2.5.0版本的使用
http://afnetworking.com/
http://cocoadocs.org/docsets/AFNetworking/2.5.0/
1. 下载源码并进行编译
源码地址 http://pan.baidu.com/s/1jG24w3W
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;)
3. 不带参数的GET请求
源码:
4. 带参数GET的请求
源码:
5. 不带参数的POST请求
源码:
6. 带参数的POST请求
源码:
附录:
基于URL-form-encodes Body方式的POST请求
7. 文件下载
8. 文件上传
单文件上传 - (没有办法做试验演示)
多文件上传 - (没有办法做试验演示)
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.
QUERY STRING PARAMETER
ENCODING
字符串序列编码
URL FORM PARAMETER ENCODING
URL表单编码
JSON PARAMETER ENCODING
JSON编码
注: POST分为JSON或者URL表单编码
此文章是基于AFNetworking2.5版本的，需要看AFNetworking2.0版本的请看上一篇文章：AFNetworking2.0使用
1.检测网络状态
[objc] view
plaincopy
+ (void)netWorkStatus
{
/**
AFNetworkReachabilityStatusUnknown = -1, // 未知
AFNetworkReachabilityStatusNotReachable = 0, // 无连接
AFNetworkReachabilityStatusReachableViaWWAN = 1, // 3G 花钱
AFNetworkReachabilityStatusReachableViaWiFi = 2, // WiFi
*/
// 如果要检测网络状态的变化,必须用检测管理器的单例的startMonitoring
[[AFNetworkReachabilityManager sharedManager] startMonitoring];
// 检测网络连接的单例,网络变化时的回调方法
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
NSLog(@"%ld", status);
}];
}
可以用来监测WWAN或者WiFi或者断网状态;)
// 基准baseURL
BOOL isExistenceNetwork = YES;
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:isExistenceNetwork = YES;
break；
case AFNetworkReachabilityStatusReachableViaWiFi: isExistenceNetwork = YES; break; case AFNetworkReachabilityStatusNotReachable:
default: [operationQueue setSuspended:YES]; // 此处可以发送断网通知
isExistenceNetwork = NO;
break; }
if (!isExistenceNetwork) {
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
//MBProgressHUD为第三方库，不需要可以省略或使用AlertView
hud.removeFromSuperViewOnHide =YES;
hud.mode = MBProgressHUDModeText;
hud.labelText = NSLocalizedString(INFO_NetNoReachable, nil);
hud.minSize = CGSizeMake(132.f, 108.0f);
[hud hide:YES afterDelay:3];
}
}];2.JSON方式获取数据
[objc] view
plaincopy
+ (void)JSONDataWithUrl:(NSString *)url success:(void (^)(id json))success fail:(void (^)())fail;
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *dict = @{@"format": @"json"};
// 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情
[manager GET:url parameters:dict success:^(AFHTTPRequestOperation *operation,
id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
3.xml方式获取数据
[objc] view
plaincopy
+ (void)XMLDataWithUrl:(NSString *)urlStr success:(void (^)(id xml))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// 返回的数据格式是XML
manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
NSDictionary *dict = @{@"format": @"xml"};
// 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情
[manager GET:urlStr parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
4.post提交json数据
[objc] view
plaincopy
+ (void)postJSONWithUrl:(NSString *)urlStr parameters:(id)parameters success:(void (^)(id responseObject))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// 设置请求格式
manager.requestSerializer = [AFJSONRequestSerializer serializer];
// 设置返回格式
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
[manager POST:urlStr parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
// NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@", error);
if (fail) {
fail();
}
}];
}
5.下载文件
[objc] view
plaincopy
+ (void)sessionDownloadWithUrl:(NSString *)urlStr success:(void (^)(NSURL *fileURL))success fail:(void (^)())fail
{
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];
NSString *urlString = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
// 指定下载文件保存的路径
// NSLog(@"%@ %@", targetPath, response.suggestedFilename);
// 将下载文件保存在缓存路径中
NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString *path = [cacheDir stringByAppendingPathComponent:response.suggestedFilename];
// URLWithString返回的是网络的URL,如果使用本地URL,需要注意
// NSURL *fileURL1 = [NSURL URLWithString:path];
NSURL *fileURL = [NSURL fileURLWithPath:path];
// NSLog(@"== %@ |||| %@", fileURL1, fileURL);
if (success) {
success(fileURL);
}
return fileURL;
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
NSLog(@"%@ %@", filePath, error);
if (fail) {
fail();
}
}];
[task resume];
}
6.文件上传－自定义上传文件名
[objc] view
plaincopy
+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL fileName:(NSString *)fileName fileType:(NSString *)fileTye success:(void (^)(id responseObject))success fail:(void (^)())fail
{
// 本地上传给服务器时,没有确定的URL,不好用MD5的方式处理
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
//@"http://localhost/demo/upload.php"
[manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];
// 要上传保存在服务器中的名称
// 使用时间来作为文件名 2014-04-30 14:20:57.png
// 让不同的用户信息,保存在不同目录中
// NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// // 设置日期格式
// formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
// NSString *fileName = [formatter stringFromDate:[NSDate date]];
//@"image/png"
[formData appendPartWithFileURL:fileURL name:@"uploadFile" fileName:fileName mimeType:fileTye error:NULL];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (fail) {
fail();
}
}];
}
7.文件上传－随机生成文件名
[objc] view
plaincopy
+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL success:(void (^)(id responseObject))success fail:(void (^)())fail
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// AFHTTPResponseSerializer就是正常的HTTP请求响应结果:NSData
// 当请求的返回数据不是JSON,XML,PList,UIImage之外,使用AFHTTPResponseSerializer
// 例如返回一个html,text...
//
// 实际上就是AFN没有对响应数据做任何处理的情况
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
// formData是遵守了AFMultipartFormData的对象
[manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// 将本地的文件上传至服务器
// NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];
[formData appendPartWithFileURL:fileURL name:@"uploadFile" error:NULL];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
// NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
//
// NSLog(@"完成 %@", result);
if (success) {
success(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"错误 %@", error.localizedDescription);
if (fail) {
fail();
}
}];
AFNetworking 2.5.0版本的使用
http://afnetworking.com/
http://cocoadocs.org/docsets/AFNetworking/2.5.0/
1. 下载源码并进行编译
源码地址 http://pan.baidu.com/s/1jG24w3W
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);
}
}
@end8. 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
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