源码0603-03-掌握-NSURLSession

//
//  ViewController.m
//  03-掌握-NSURLSession

#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSLog(@"%@", [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]);
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [self download];
}

- (void)download
{
    // 获得NSURLSession对象
    NSURLSession *session = [NSURLSession sharedSession];
    
    // 获得下载任务
    NSURLSessionDownloadTask *task = [session downloadTaskWithURL:[NSURL URLWithString:@"http://120.25.226.186:32812/resources/videos/minion_01.mp4"] completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {
        // 文件将来存放的真实路径
        NSString *file = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:response.suggestedFilename];
        
        // 剪切location的临时文件到真实路径
        NSFileManager *mgr = [NSFileManager defaultManager];
        [mgr moveItemAtURL:location toURL:[NSURL fileURLWithPath:file] error:nil];
    }];
    
    // 启动任务
    [task resume];
}

- (void)post
{
    // 获得NSURLSession对象
    NSURLSession *session = [NSURLSession sharedSession];
    
    // 创建请求
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://120.25.226.186:32812/login"]];
    request.HTTPMethod = @"POST"; // 请求方法
    request.HTTPBody = [@"username=520it&pwd=520it" dataUsingEncoding:NSUTF8StringEncoding]; // 请求体
    
    // 创建任务
    NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil]);
    }];
    
    // 启动任务
    [task resume];
}

- (void)get2
{
    // 获得NSURLSession对象
    NSURLSession *session = [NSURLSession sharedSession];
    
    // 创建任务
    NSURLSessionDataTask *task = [session dataTaskWithURL:[NSURL URLWithString:@"http://120.25.226.186:32812/login?username=123&pwd=4324"] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil]);
    }];
    
    // 启动任务
    [task resume];
}

- (void)get
{
    // 获得NSURLSession对象
    NSURLSession *session = [NSURLSession sharedSession];
    
    // 创建任务
    NSURLSessionDataTask *task = [session dataTaskWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://120.25.226.186:32812/login?username=123&pwd=4324"]] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil]);
    }];
    
    // 启动任务
    [task resume];
}

@end

 

04-掌握-NSURLSession-代理方法

//
//  ViewController.m
//  04-掌握-NSURLSession-代理方法
#import "ViewController.h"

@interface ViewController () <NSURLSessionDataDelegate, NSURLConnectionDataDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    // 获得NSURLSession对象
    NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[[NSOperationQueue alloc] init]];
    
    // 创建任务
    NSURLSessionDataTask *task = [session dataTaskWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://120.25.226.186:32812/login?username=123&pwd=4324"]]];
    
    // 启动任务
    [task resume];
}

#pragma mark - <NSURLSessionDataDelegate>
/**
 * 1.接收到服务器的响应
 */
- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveResponse:(NSURLResponse *)response completionHandler:(void (^)(NSURLSessionResponseDisposition))completionHandler
{
    NSLog(@"%s", __func__);
    
    // 允许处理服务器的响应，才会继续接收服务器返回的数据
    completionHandler(NSURLSessionResponseAllow);
    
    // void (^)(NSURLSessionResponseDisposition)
}

/**
 * 2.接收到服务器的数据（可能会被调用多次）
 */
- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data
{
    NSLog(@"%s", __func__);
}

/**
 * 3.请求成功或者失败（如果失败，error有值）
 */
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error
{
    NSLog(@"%s", __func__);
}

@end