IOS http(上传和下载)
HttpTool.h
#import <Foundation/Foundation.h> typedef void (^HttpToolProgressBlock)(CGFloat progress); typedef void (^HttpToolCompletionBlock)(NSError *error); @interface HttpTool : NSObject -(void)uploadData:(NSData *)data url:(NSURL *)url progressBlock : (HttpToolProgressBlock)progressBlock completion:(HttpToolCompletionBlock) completionBlock; /** 下载数据 */ -(void)downLoadFromURL:(NSURL *)url progressBlock : (HttpToolProgressBlock)progressBlock completion:(HttpToolCompletionBlock) completionBlock; -(NSString *)fileSavePath:(NSString *)fileName; @end
#import "HttpTool.h" #define kTimeOut 5.0 @interface HttpTool()<NSURLSessionDownloadDelegate,NSURLSessionTaskDelegate>{ //下载 HttpToolProgressBlock _dowloadProgressBlock; HttpToolCompletionBlock _downladCompletionBlock; NSURL *_downloadURL; //上传 HttpToolProgressBlock _uploadProgressBlock; HttpToolCompletionBlock _uploadCompletionBlock; } @end @implementation HttpTool #pragma mark - 上传 -(void)uploadData:(NSData *)data url:(NSURL *)url progressBlock:(HttpToolProgressBlock)progressBlock completion:(HttpToolCompletionBlock)completionBlock{ NSAssert(data != nil, @"上传数据不能为空"); NSAssert(url != nil, @"上传文件路径不能为空"); _uploadProgressBlock = progressBlock; _uploadCompletionBlock = completionBlock; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:kTimeOut]; request.HTTPMethod = @"PUT"; NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration]; //NSURLSessionDownloadDelegate NSURLSession *session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[[NSOperationQueue alloc] init]]; //定义下载操作 NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:data]; [uploadTask resume]; } #pragma mark - 上传代理 #pragma mark - 上传进度 -(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didSendBodyData:(int64_t)bytesSent totalBytesSent:(int64_t)totalBytesSent totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend{ if (_uploadProgressBlock) { CGFloat progress = (CGFloat) totalBytesSent / totalBytesExpectedToSend; _uploadProgressBlock(progress); } } #pragma mark - 上传完成 -(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error{ if (_uploadCompletionBlock) { _uploadCompletionBlock(error); _uploadProgressBlock = nil; _uploadCompletionBlock = nil; } } #pragma mark - 下载 -(void)downLoadFromURL:(NSURL *)url progressBlock:(HttpToolProgressBlock)progressBlock completion:(HttpToolCompletionBlock)completionBlock{ NSAssert(url != nil, @"下载URL不能传空"); _downloadURL = url; _dowloadProgressBlock = progressBlock; _downladCompletionBlock = completionBlock; NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:kTimeOut]; //session 大多数使用单例即可 NSURLResponse *response = nil; //发达同步请求 [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil]; //NSLog(@"%lld",response.expectedContentLength); if (response.expectedContentLength <= 0) { if (_downladCompletionBlock) { NSError *error =[NSError errorWithDomain:@"文件不存在" code:404 userInfo:nil]; _downladCompletionBlock(error); //清除block _downladCompletionBlock = nil; _dowloadProgressBlock = nil; } return; } NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration]; //NSURLSessionDownloadDelegate NSURLSession *session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[[NSOperationQueue alloc] init]]; //定义下载操作 NSURLSessionDownloadTask *downloadTask = [session downloadTaskWithRequest:request]; [downloadTask resume]; } #pragma mark -NSURLSessionDownloadDelegate #pragma mark 下载完成 -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location{ //图片保存在沙盒的Doucument下 NSString *fileSavePath = [self fileSavePath:[_downloadURL lastPathComponent]]; //文件管理 NSFileManager *fileManager = [NSFileManager defaultManager]; [fileManager copyItemAtURL:location toURL:[NSURL fileURLWithPath:fileSavePath] error:nil]; if (_downladCompletionBlock) { //通知下载成功,没有没有错误 _downladCompletionBlock(nil); //清空block _downladCompletionBlock = nil; _dowloadProgressBlock = nil; } } #pragma mark 下载进度 -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite{ if (_dowloadProgressBlock) { //已写数据字节数除以总字节数就是下载进度 CGFloat progress = (CGFloat)totalBytesWritten / totalBytesExpectedToWrite; _dowloadProgressBlock(progress); } } -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didResumeAtOffset:(int64_t)fileOffset expectedTotalBytes:(int64_t)expectedTotalBytes{ } #pragma mark -传一个文件名,返回一个在沙盒Document下的文件路径 -(NSString *)fileSavePath:(NSString *)fileName{ NSString *document = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; //图片保存在沙盒的Doucument下 return [document stringByAppendingPathComponent:fileName]; } @end