iOS用ASIHttpRequest上傳

1.新建一個single view工程，導入ASIHttpRequest庫，導入MobileCoreServices、CFNetwork、SystemConfiguration和libz1.2.5.dylib四個系統庫

2.隨便導入一張圖片，比如haoyou.png

3.ViewController.h

    #import <UIKit/UIKit.h>


#import "ASIHTTPRequest.h"  
#import "ASIFormDataRequest.h"  
@interface ViewController : UIViewController <ASIHTTPRequestDelegate>  
@property (nonatomic, copy)NSString *m_auth;  
@end  </pre> 


 4.ViewController.m 添加兩個按鈕
    - (void)viewDidLoad {

        [super viewDidLoad];


    UIButton *loginBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];  
    loginBtn.frame = CGRectMake(100, 20, 120, 40);  
    [loginBtn setTitle:@"登錄" forState:UIControlStateNormal];  
    [loginBtn addTarget:self action:@selector(login) forControlEvents:UIControlEventTouchUpInside];  
    [self.view addSubview:loginBtn];  

    UIButton *uploadBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];  
    uploadBtn.frame = CGRectMake(100, 80, 120, 40);  
    [uploadBtn setTitle:@"上傳" forState:UIControlStateNormal];  
    [uploadBtn   addTarget:self action:@selector(upload) forControlEvents:UIControlEventTouchUpInside];   
    [self.view addSubview:uploadBtn];  
}  </pre> 


 5.實現login和upload兩個方法
    - (void)login {

        NSURL url = [NSURL URLWithString:@"..."];//此處省略請求url

        //請求

        ASIHTTPRequest request = [ASIHTTPRequest requestWithURL:url];

        request.tag = 10;

        request.delegate = self;

        [request startAsynchronous];

    }


- (void)upload {  
    NSURL* url = [NSURL URLWithString:@"..."];//此處省略請求url  
    UIImage* img = [UIImage imageNamed:@"haoyou.png"];  
    NSData* data = UIImagePNGRepresentation(img);  
    //ASIFormDataRequest請求是post請求，可以查看其源碼  
    ASIFormDataRequest* request = [ASIFormDataRequest requestWithURL:url];  
    request.tag = 20;  
    request.delegate = self;  
    [request setPostValue:self.m_auth forKey:@"m_auth"];  
//    [request setFile:@"tabbar.png" forKey:@"haoyou"];//如果有路徑，上傳文件  
    [request setData:data  withFileName:@"tmp.png" andContentType:@"image/png" forKey:@"headimage"];  
//               數據                文件名,隨便起                 文件類型            設置key，要和服務端保持一致  
    [request startAsynchronous];  
}  </pre> 


 6.實現協議
    - (void)requestFailed:(ASIHTTPRequest *)request {

        NSLog(@"請求失敗");

    }


- (void)requestFinished:(ASIHTTPRequest *)request {  
    if (request.tag == 10) {  
        NSDictionary * dic = [NSJSONSerialization JSONObjectWithData:request.responseData options:0 error:nil];  
        self.m_auth = [dic objectForKey:@"m_auth"];  
        NSLog(@"%@", self.m_auth);  
    }  
    if (request.tag == 20) {  
        NSLog(@"%@", request.responseString);  
    }  
}  </pre>