下载地址：https://github.com/samsoffes/ssziparchive
注意：需要引入libz.dylib框架
// Unzipping
NSString *zipPath = @"path_to_your_zip_file";
NSString *destinationPath = @"path_to_the_folder_where_you_want_it_unzipped";
[SSZipArchive unzipFileAtPath:zipPath toDestination:destinationPath];
// Zipping
NSString *zippedPath = @"path_where_you_want_the_file_created";
NSArray *inputPaths = [NSArray arrayWithObjects:
[[NSBundle mainBundle] pathForResource:@"photo1" ofType:@"jpg"],
[[NSBundle mainBundle] pathForResource:@"photo2" ofType:@"jpg"]
nil];
[SSZipArchive createZipFileAtPath:zippedPath withFilesAtPaths:inputPaths];
Content-Type multipart/form-data; boundary=本次上传标示字符串(不能中文)
--本次上传标示字符串
Content-Disposition: form-data; name="服务端字段"; filename="上传文件名"
Content-Type: 上传文件MIMEType
要上传的二进制数据
--本次上传标示字符串
Content-Disposition: form-data; name="submit"
Submit
--本次上传标示字符串--
|
类型 |
文件拓展名 |
MIMEType |
|
图片 |
png |
image/png |
|
bmpdib |
image/bmp |
|
|
jpejpegjpg |
image/jpeg |
|
|
gif |
image/gif |
|
|
多媒体 |
mp3 |
audio/mpeg |
|
mp4mpg4m4vmp4v |
video/mp4 |
|
|
文本 |
js |
application/javascript |
|
|
application/pdf |
|
|
text xt |
text/plain |
|
|
json |
application/json |
|
|
xml |
text/xml |
post上传
// // UploadFile.m // 02.Post上传 #import "UploadFile.h" @implementation UploadFile // 拼接字符串 static NSString *boundaryStr = @"--"; // 分隔字符串 static NSString *randomIDStr; // 本次上传标示字符串 static NSString *uploadID; // 上传(php)脚本中，接收文件字段 - (instancetype)init { self = [super init]; if (self) { randomIDStr = @"itcast"; uploadID = @"uploadFile"; } return self; } #pragma mark - 私有方法 - (NSString *)topStringWithMimeType:(NSString *)mimeType uploadFile:(NSString *)uploadFile { NSMutableString *strM = [NSMutableString string]; [strM appendFormat:@"%@%@ ", boundaryStr, randomIDStr]; [strM appendFormat:@"Content-Disposition: form-data; name="%@"; filename="%@" ", uploadID, uploadFile]; [strM appendFormat:@"Content-Type: %@ ", mimeType]; NSLog(@"%@", strM); return [strM copy]; } - (NSString *)bottomString { NSMutableString *strM = [NSMutableString string]; [strM appendFormat:@"%@%@ ", boundaryStr, randomIDStr]; [strM appendString:@"Content-Disposition: form-data; name="submit" "]; [strM appendString:@"Submit "]; [strM appendFormat:@"%@%@-- ", boundaryStr, randomIDStr]; NSLog(@"%@", strM); return [strM copy]; } #pragma mark - 上传文件 - (void)uploadFileWithURL:(NSURL *)url data:(NSData *)data { // 1> 数据体 NSString *topStr = [self topStringWithMimeType:@"image/png" uploadFile:@"头像1.png"]; NSString *bottomStr = [self bottomString]; NSMutableData *dataM = [NSMutableData data]; [dataM appendData:[topStr dataUsingEncoding:NSUTF8StringEncoding]]; [dataM appendData:data]; [dataM appendData:[bottomStr dataUsingEncoding:NSUTF8StringEncoding]]; // 1. Request NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:2.0f]; // dataM出了作用域就会被释放,因此不用copy request.HTTPBody = dataM; // 2> 设置Request的头属性 request.HTTPMethod = @"POST"; // 3> 设置Content-Length NSString *strLength = [NSString stringWithFormat:@"%ld", (long)dataM.length]; [request setValue:strLength forHTTPHeaderField:@"Content-Length"]; // 4> 设置Content-Type NSString *strContentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", randomIDStr]; [request setValue:strContentType forHTTPHeaderField:@"Content-Type"]; // 3> 连接服务器发送请求 [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"%@", result); }]; } @end
// // MJViewController.m // 02.Post上传 #import "MJViewController.h" #import "UploadFile.h" @interface MJViewController () @end @implementation MJViewController - (void)viewDidLoad { [super viewDidLoad]; UploadFile *upload = [[UploadFile alloc] init]; NSString *urlString = @"http://localhost/upload.php"; NSString *path = [[NSBundle mainBundle] pathForResource:@"头像1.png" ofType:nil]; NSData *data = [NSData dataWithContentsOfFile:path]; [upload uploadFileWithURL:[NSURL URLWithString:urlString] data:data]; } @end
文件下载
// // FileDownload.m // 01.文件下载 // #import "FileDownload.h" #import "NSString+Password.h" #define kTimeOut 2.0f // 每次下载的字节数 #define kBytesPerTimes 20250 @interface FileDownload() @property (nonatomic, strong) NSString *cacheFile; @property (nonatomic, strong) UIImage *cacheImage; @end @implementation FileDownload /** 为了保证开发的简单,所有方法都不使用多线程,所有的注意力都保持在文件下载上 在开发中如果碰到比较绕的计算问题时,建议: 1> 测试数据不要太大 2> 测试数据的数值变化,能够用笔算计算出准确的数值 3> 编写代码对照测试 */ //- (NSString *)cacheFile //{ // if (!_cacheFile) { // NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; // _cacheFile = [cacheDir stringByAppendingPathComponent:@"123.png"]; // } // return _cacheFile; //} - (UIImage *)cacheImage { if (!_cacheImage) { _cacheImage = [UIImage imageWithContentsOfFile:self.cacheFile]; } return _cacheImage; } - (void)setCacheFile:(NSString *)urlStr { NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; urlStr = [urlStr MD5]; _cacheFile = [cacheDir stringByAppendingPathComponent:urlStr]; } - (void)downloadFileWithURL:(NSURL *)url completion:(void (^)(UIImage *image))completion { // GCD中的串行队列异步方法 dispatch_queue_t q = dispatch_queue_create("cn.itcast.download", DISPATCH_QUEUE_SERIAL); dispatch_async(q, ^{ NSLog(@"%@", [NSThread currentThread]); // 把对URL进行MD5加密之后的结果当成文件名 self.cacheFile = [url absoluteString]; // 1. 从网络下载文件,需要知道这个文件的大小 long long fileSize = [self fileSizeWithURL:url]; // 计算本地缓存文件大小 long long cacheFileSize = [self localFileSize]; if (cacheFileSize == fileSize) { dispatch_async(dispatch_get_main_queue(), ^{ completion(self.cacheImage); }); NSLog(@"文件已经存在"); return; } // 2. 确定每个数据包的大小 long long fromB = 0; long long toB = 0; // 计算起始和结束的字节数 while (fileSize > kBytesPerTimes) { // 20480 + 20480 // toB = fromB + kBytesPerTimes - 1; // 3. 分段下载文件 [self downloadDataWithURL:url fromB:fromB toB:toB]; fileSize -= kBytesPerTimes; fromB += kBytesPerTimes; } [self downloadDataWithURL:url fromB:fromB toB:fromB + fileSize - 1]; dispatch_async(dispatch_get_main_queue(), ^{ completion(self.cacheImage); }); }); } #pragma mark 下载指定字节范围的数据包 /** NSURLRequestUseProtocolCachePolicy = 0, // 默认的缓存策略,内存缓存 NSURLRequestReloadIgnoringLocalCacheData = 1, // 忽略本地的内存缓存 NSURLRequestReloadIgnoringCacheData */ - (void)downloadDataWithURL:(NSURL *)url fromB:(long long)fromB toB:(long long)toB { NSLog(@"数据包:%@", [NSThread currentThread]); NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:kTimeOut]; // 指定请求中所要GET的字节范围 NSString *range = [NSString stringWithFormat:@"Bytes=%lld-%lld", fromB, toB]; [request setValue:range forHTTPHeaderField:@"Range"]; NSLog(@"%@", range); NSURLResponse *response = nil; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:NULL]; // 写入文件,覆盖文件不会追加 // [data writeToFile:@"/Users/aplle/Desktop/1.png" atomically:YES]; [self appendData:data]; NSLog(@"%@", response); } #pragma mark - 读取本地缓存文件大小 - (long long)localFileSize { // 读取本地文件信息 NSDictionary *dict = [[NSFileManager defaultManager] attributesOfItemAtPath:self.cacheFile error:NULL]; NSLog(@"%lld", [dict[NSFileSize] longLongValue]); return [dict[NSFileSize] longLongValue]; } #pragma mark - 追加数据到文件 - (void)appendData:(NSData *)data { // 判断文件是否存在 NSFileHandle *fp = [NSFileHandle fileHandleForWritingAtPath:self.cacheFile]; // 如果文件不存在创建文件 if (!fp) { [data writeToFile:self.cacheFile atomically:YES]; } else { // 如果文件已经存在追加文件 // 1> 移动到文件末尾 [fp seekToEndOfFile]; // 2> 追加数据 [fp writeData:data]; // 3> 写入文件 [fp closeFile]; } } #pragma mark - 获取网络文件大小 - (long long)fileSizeWithURL:(NSURL *)url { // 默认是GET NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:kTimeOut]; // HEAD 头,只是返回文件资源的信息,不返回具体是数据 // 如果要获取资源的MIMEType,也必须用HEAD,否则,数据会被重复下载两次 request.HTTPMethod = @"HEAD"; // 使用同步方法获取文件大小 NSURLResponse *response = nil; [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:NULL]; // expectedContentLength文件在网络上的大小 NSLog(@"%lld", response.expectedContentLength); return response.expectedContentLength; } @end
// // MJViewController.m // 01.文件下载 // // Created by apple on 14-4-29. // Copyright (c) 2014年 itcast. All rights reserved. // #import "MJViewController.h" #import "FileDownload.h" @interface MJViewController () @property (nonatomic, strong) FileDownload *download; @property (weak, nonatomic) IBOutlet UIImageView *imageView; @end @implementation MJViewController - (void)viewDidLoad { [super viewDidLoad]; self.download = [[FileDownload alloc] init]; [self.download downloadFileWithURL:[NSURL URLWithString:@"http://localhost/itcast/images/head4.png"] completion:^(UIImage *image) { self.imageView.image = image; }]; } @end
Post Json解析数据
// // MJViewController.m // 03.Post JSON // #import "MJViewController.h" #import "Person.h" @interface MJViewController () @end @implementation MJViewController /** 序列化: 将字典或数组变成顺序(序列的)二进制数据流,以便于网络传输 反序列化: 将从网络接收到的二进制数据流,转换成数据和字典的过程 */ - (void)viewDidLoad { [super viewDidLoad]; [self postObj]; } - (void)postObj { // 1. URL NSURL *url = [NSURL URLWithString:@"http://localhost/postjson.php"]; // 2. Request NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:2.0f]; request.HTTPMethod = @"POST"; Person *p = [[Person alloc] init]; p.name = @"zhang"; p.age = 19; // KVC给对象赋值 // p setValuesForKeysWithDictionary:<#(NSDictionary *)#> // 使用KVC把对象变成字典 // 需要指定对象的属性的键值数组 // 数组中指定的键值,必须是对象的属性 // 错误示例1 // id obj = [p dictionaryWithValuesForKeys:@[@"name", @"age1"]]; // 键值数组中,不一定要包含全部的属性 id obj = [p dictionaryWithValuesForKeys:@[@"name"]]; // id obj = [p dictionaryWithValuesForKeys:@[@"name", @"age"]]; // 提示dataWithJSONObject只能对NSDictionary和NSArray进行序列化 request.HTTPBody = [NSJSONSerialization dataWithJSONObject:obj options:0 error:NULL]; // 3. Connection [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc]init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"%@", result); }]; } - (void)postJSON { // 1. URL NSURL *url = [NSURL URLWithString:@"http://localhost/postjson.php"]; // 2. Request NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:2.0f]; request.HTTPMethod = @"POST"; // 在iOS中JSON就是Dict/Array // 使用NSDictionary & NSArray可以各种灵活组合 NSDictionary *dict = @{ @"name": @"zhangsan", @"age" : @18, @"book" : @[ @"iOS 1", @"iOS 2" ], @"zoom" : @1 }; NSDictionary *dict1 = @{ @"name": @"lisi", @"age" : @24, @"book" : @[ @"iOS 7", @"iOS 6" ], @"zoom" : @2 }; NSArray *array = @[dict, dict1]; // 把字典转换成二进制数据流, 序列化 request.HTTPBody = [NSJSONSerialization dataWithJSONObject:array options:0 error:NULL]; // 将data转换成NSDictionary 反序列化 // [NSJSONSerialization JSONObjectWithData:<#(NSData *)#> options:<#(NSJSONReadingOptions)#> error:<#(NSError *__autoreleasing *)#>] // 3. Connection [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc]init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"%@", result); }]; } @end
URLSessin文件上传
// // MJViewController.m // 04.URLSessin Upload // #import "MJViewController.h" @interface MJViewController () @end @implementation MJViewController - (void)viewDidLoad { [super viewDidLoad]; [self uploadFile]; } #pragma mark - 用Session上传头像 - (void)uploadFile { // 1. NSURL NSString *urlString = @"http://localhost/uploads/测试一下.png"; urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *url = [NSURL URLWithString:urlString]; // NSURL *url = [NSURL URLWithString:@"http://localhost/uploads/测试一下.png"]; // 2. Request NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:2.0]; request.HTTPMethod = @"PUT"; // 设置用户授权 // 1> "admin:123456" NSString *authStr = @"admin:123456"; // 2> result = 对字符串进行BASE64编码(网络传输中常用的一种编码格式,NSData) NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding]; NSString *result = [authData base64EncodedStringWithOptions:0]; // 3> "Basic result" => 提交给服务器的验证字符串,用来验证身份 NSString *authString = [NSString stringWithFormat:@"Basic %@", result]; // 设置HTTP请求头的数值,设置用户授权 [request setValue:authString forHTTPHeaderField:@"Authorization"]; // 3. Session,有一个单例,是全局共享的 NSURLSession *session = [NSURLSession sharedSession]; // 4. 文件上传 NSURL *bundleURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil]; // 所有任务默认都是挂起的 NSURLSessionUploadTask *task = [session uploadTaskWithRequest:request fromFile:bundleURL completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { // 上传完成操作 NSLog(@"%@", response); }]; [task resume]; } @end