iOS开发 －"ASI"使用实例

ASI

#import "ViewController.h"
#import "ASIHTTPRequest.h"

@interface HMViewController () <ASIHTTPRequestDelegate>
@property (nonatomic, strong) ASIHTTPRequest *request;
@end

@implementation HMViewController

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

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

发送请求

#pragma mark - ASIHTTPRequestDelegate
/**
 *  1.开始发送请求
 */
- (void)requestStarted:(ASIHTTPRequest *)request
{
    NSLog(@"requestStarted");
}
/**
 *  2.接收到服务器的响应头信息
 */
- (void)request:(ASIHTTPRequest *)request didReceiveResponseHeaders:(NSDictionary *)responseHeaders
{
    NSLog(@"didReceiveResponseHeaders");
}
/**
 *  3.接收到服务器的实体数据（具体数据）
 *  只要实现了这个代理方法，responseData\responseString就没有值
 */
//- (void)request:(ASIHTTPRequest *)request didReceiveData:(NSData *)data
//{
//    NSLog(@"didReceiveData-%@", data);
//}
/**
 *  4.服务器的响应数据接收完毕
 */
- (void)requestFinished:(ASIHTTPRequest *)request
{
    NSLog(@"requestFinished--%@", [request responseData]);
}
/**
 *  5.请求失败
 */
- (void)requestFailed:(ASIHTTPRequest *)request
{
    NSLog(@"requestFailed");
}

发送异步的GET请求

/**
 *  异步的GET请求
 */
- (void)asynGet
{
    // 1.URL
    NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/video"];

    // 2.创建一个请求对象
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
    request.timeOutSeconds = 15; // 15秒后服务器还没有响应，就算超时
    // 设置代理
    request.delegate = self;

    // 3.开始请求
    [request startAsynchronous];

    self.request = request;
}

- (void)dealloc
{
    // 这句代码为了防止：控制器销毁了，request还回来调用控制器的代理方法，引发野指针
    [self.request clearDelegatesAndCancel];
}

发送同步的GET请求

/**
 *  同步的GET请求
 */
- (void)synGet
{
    // 1.URL
    NSURL *url = [NSURL URLWithString:@"http://localhost:8080/Server/video"];

    // 2.创建一个请求对象
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
    request.timeOutSeconds = 15; // 15秒后服务器还没有响应，就算超时

    // 3.开始请求(这行代码会卡主，等待服务器给数据)
    [request startSynchronous];

    // 4.请求完毕
    NSError *error = [request error];
    if (error) {
        NSLog(@"请求失败---%@", error);
    } else {
        NSData *data = [request responseData];
        //        NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        //        NSString *str = [request responseString];

        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
        NSLog(@"请求成功---%@", dict);
    }
}

监听ASI的block请求

监听ASI的请求
 1.成为代理，遵守ASIHTTPRequestDelegate协议，实现协议中的代理方法
 request.delegate = self;
 - (void)requestStarted:(ASIHTTPRequest *)request;
 - (void)request:(ASIHTTPRequest *)request didReceiveResponseHeaders:(NSDictionary *)responseHeaders;
 - (void)request:(ASIHTTPRequest *)request didReceiveData:(NSData *)data;
 - (void)requestFinished:(ASIHTTPRequest *)request;
 - (void)requestFailed:(ASIHTTPRequest *)request;

 2.成为代理，不遵守ASIHTTPRequestDelegate协议，自定义代理方法
 request.delegate = self;
 [request setDidStartSelector:@selector(start:)];
 [request setDidFinishSelector:@selector(finish:)];

 3.设置block
 [request setStartedBlock:^{
    NSLog(@"setStartedBlock");
 }];
 [request setHeadersReceivedBlock:^(NSDictionary *responseHeaders) {
    NSLog(@"setHeadersReceivedBlock--%@", responseHeaders);
 }];
 [request setDataReceivedBlock:^(NSData *data) {
    NSLog(@"setDataReceivedBlock--%@", data);
 }];
 [request setCompletionBlock:^{
    NSLog(@"setCompletionBlock");
 }];
 [request setFailedBlock:^{
    NSLog(@"setFailedBlock");
 }];

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

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    // 1.URL
    NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/video"];

    // 2.创建一个请求对象
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];

    // 3.开始请求
    [request startAsynchronous];

    // 4.设置监听方法
    request.delegate = self;
    [request setDidStartSelector:@selector(start:)];
    [request setDidFinishSelector:@selector(finish:)];
}

- (void)start:(ASIHTTPRequest *)request
{
    NSLog(@"start--%@", request);
}

- (void)finish:(ASIHTTPRequest *)request {
    NSLog(@"finish--%d %@ %@", [request responseStatusCode], [request responseStatusMessage], [request responseData]);
}

- (void)asyncBlock
{
    // 1.URL
    NSURL *url = [NSURL URLWithString:@"http://localhost:8080/Server/video"];

    // 2.创建一个请求对象
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];

    // 如果同时设置了block和实现了代理方法，请求过程中，block和代理方法都会调用，
    // 一般的调用顺序：代理方法 > block
    //    request.delegate = self;

    // 3.开始请求
    [request startAsynchronous];

    // 4.设置block监听
    [request setStartedBlock:^{
        NSLog(@"setStartedBlock");
    }];
    [request setHeadersReceivedBlock:^(NSDictionary *responseHeaders) {
        NSLog(@"setHeadersReceivedBlock--%@", responseHeaders);
    }];
    [request setDataReceivedBlock:^(NSData *data) {
        NSLog(@"setDataReceivedBlock--%@", data);

    }];
    [request setCompletionBlock:^{
        NSLog(@"setCompletionBlock");
    }];
    [request setFailedBlock:^{
        NSLog(@"setFailedBlock");
    }];
}

文件下载

#import "ViewController.h"
#import "ASIHTTPRequest.h"

@interface HMViewController () // <ASIProgressDelegate>
@property (weak, nonatomic) IBOutlet UIProgressView *progressView;
@property (nonatomic, assign) BOOL downloading;
@property (nonatomic, strong) ASIHTTPRequest *request;
@end

@implementation HMViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.
}

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

- (void)download
{
    if (self.downloading) {
        [self.request clearDelegatesAndCancel];

        self.downloading = NO;
    } else {
        // 1.URL
        NSURL *url = [NSURL URLWithString:@"http://localhost:8080/Server/resources/test.mp4"];

        // 2.创建一个请求对象
        ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];

        // 3.设置文件的缓存路径
        NSString *caches = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
        NSString *filepath = [caches stringByAppendingPathComponent:@"test.mp4"];
        request.downloadDestinationPath = filepath;

        // 4.设置进度监听的代理(要想成为进度监听代理，最好遵守ASIProgressDelegate协议)
        request.downloadProgressDelegate = self.progressView;

        // 这个属性设置为YES，就会支持断点下载
        request.allowResumeForFileDownloads = YES;

        // 如果要实现断点续传，需要设置一个文件的临时路径
        request.temporaryFileDownloadPath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"test.temp"];

        // 5.开始请求
        [request startAsynchronous];
        self.request = request;

        self.downloading = YES;
    }
}

- (void)setProgress:(float)newProgress
{
//    NSLog(@"下载进度--%f", newProgress);
    self.progressView.progress = newProgress;
}
@end

文件上传

#import "ViewController.h"
#import "ASIFormDataRequest.h"
#import "ASINetworkQueue.h"

@interface HMViewController ()
@property (weak, nonatomic) IBOutlet UIProgressView *progressView;
@end

@implementation HMViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

//    ASINetworkQueue *queue = [ASINetworkQueue queue];
//    queue.shouldCancelAllRequestsOnFailure = YES;
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    // 1.URL
    NSURL *url = [NSURL URLWithString:@"http://localhost:8080/Server/upload"];

    // 2.创建一个请求对象
    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];

    // 3.设置请求参数
    [request setPostValue:@"zhangsan" forKey:@"username"];
    [request setPostValue:@"123" forKey:@"pwd"];
    [request setPostValue:@"28" forKey:@"age"];
    [request setPostValue:@"1.89" forKey:@"height"];

    // 设置文件参数
    NSString *file = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"];
    // 如果知道文件路径，最好就用这个方法（因为简单）
    // ASI内部会自动识别文件的MIMEType
    [request setFile:file forKey:@"file"];
   [request setFile:file withFileName:@"basic.pptx" andContentType:@"application/vnd.openxmlformats-officedocument.presentationml.presentation" forKey:@"file"];

    // 如果文件数据是动态产生的，就用这个方法(比如刚拍照完获得的图片数据)
//    [request setData:<#(id)#> withFileName:<#(NSString *)#> andContentType:<#(NSString *)#> forKey:<#(NSString *)#>];

    // 4.设置监听上传进度的代理
    request.uploadProgressDelegate = self.progressView;

    // 5.开始请求
    [request startAsynchronous];

    // 6.监听完毕
    __weak typeof(request) weakRequest = request;
    [request setCompletionBlock:^{
        NSLog(@"%@", [weakRequest responseString]);
    }];
}
@end