iOS開發——網路編程OC篇&（八）檔案壓縮與解壓

標籤：

檔案壓縮與解壓

 

一、技術方案
1.第三方架構：SSZipArchive
2.依賴的動態庫：libz.dylib

二、壓縮1
1.第一個方法
/**
 zipFile ：產生的zip檔案的最終路徑
 directory ： 需要進行的壓縮的檔案夾路徑
 */
[SSZipArchive createZipFileAtPath:zipFile withContentsOfDirectory:directory];

2.第一個方法
/**
 zipFile ：產生的zip檔案的最終路徑
 files ： 這是一個數組，數組裡面存放的是需要壓縮的檔案的路徑
 files = @[@"/Users/apple/Destop/1.png", @"/Users/apple/Destop/3.txt"]
 */
[SSZipArchive createZipFileAtPath:zipFile withFilesAtPaths:files];

三、解壓縮
/**
 zipFile ：需要解壓的zip檔案的路徑
 dest ： 解壓到什麼地方
 */
[SSZipArchive unzipFileAtPath:zipFile toDestination:dest];

 

一：檔案壓縮

 1 - (NSString *)MIMEType:(NSURL *)url 2 { 3     // 1.建立一個請求 4     NSURLRequest *request = [NSURLRequest requestWithURL:url]; 5     // 2.發送請求（返迴響應） 6     NSURLResponse *response = nil; 7     [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil]; 8     // 3.獲得MIMEType 9     return response.MIMEType;10 }11 12 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event13 {14     NSString *caches = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];15 16     // 0.獲得需要壓縮的檔案夾17     NSString *images = [caches stringByAppendingPathComponent:@"images"];18     19     // 1.建立一個zip檔案（壓縮）20     NSString *zipFile = [caches stringByAppendingPathComponent:@"images.zip"];21 22     BOOL result = [SSZipArchive createZipFileAtPath:zipFile withContentsOfDirectory:images];23     if(result) {24         NSString *MIMEType = [self MIMEType:[NSURL fileURLWithPath:zipFile]];25         NSData *data = [NSData dataWithContentsOfFile:zipFile];26         [self upload:@"images.zip" mimeType:MIMEType fileData:data params:@{@"username" : @"lisi"}];27     }28 }29 30 31 - (void)upload:(NSString *)filename mimeType:(NSString *)mimeType fileData:(NSData *)fileData params:(NSDictionary *)params32 {33     // 1.請求路徑34     NSURL *url = [NSURL URLWithString:@"http://192.168.15.172:8080/MJServer/upload"];35     36     // 2.建立一個POST請求37     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];38     request.HTTPMethod = @"POST";39     40     // 3.佈建要求體41     NSMutableData *body = [NSMutableData data];42     43     // 3.1.檔案參數44     [body appendData:iCocosEncode(@"--")];45     [body appendData:iCocosEncode(iCocosFileBoundary)];46     [body appendData:iCocosEncode(iCocosNewLien)];47     48     NSString *disposition = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"file\"; filename=\"%@\"", filename];49     [body appendData:iCocosEncode(disposition)];50     [body appendData:iCocosEncode(iCocosNewLien)];51     52     NSString *type = [NSString stringWithFormat:@"Content-Type: %@", mimeType];53     [body appendData:iCocosEncode(type)];54     [body appendData:iCocosEncode(iCocosNewLien)];55     56     [body appendData:iCocosEncode(iCocosNewLien)];57     [body appendData:fileData];58     [body appendData:iCocosEncode(iCocosNewLien)];59     60     // 3.2.非檔案參數61     [params enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {62         [body appendData:iCocosEncode(@"--")];63         [body appendData:iCocosEncode(iCocosFileBoundary)];64         [body appendData:iCocosEncode(iCocosNewLien)];65         66         NSString *disposition = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"", key];67         [body appendData:iCocosEncode(disposition)];68         [body appendData:iCocosEncode(iCocosNewLien)];69         70         [body appendData:iCocosEncode(iCocosNewLien)];71         [body appendData:iCocosEncode([obj description])];72         [body appendData:iCocosEncode(iCocosNewLien)];73     }];74     75     // 3.3.結束標記76     [body appendData:iCocosEncode(@"--")];77     [body appendData:iCocosEncode(iCocosFileBoundary)];78     [body appendData:iCocosEncode(@"--")];79     [body appendData:iCocosEncode(iCocosNewLien)];80     81     request.HTTPBody = body;82     83     // 4.佈建要求頭(告訴伺服器這次傳給你的是檔案資料，告訴伺服器現在發送的是一個檔案上傳請求)84     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", iCocosFileBoundary];85     [request setValue:contentType forHTTPHeaderField:@"Content-Type"];86     87     // 5.發送請求88     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {89         NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];90         NSLog(@"%@", dict);91     }];92 }

 

二：檔案解壓

1 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event2 {3     NSURL *url = [NSURL URLWithString:@"http://localhost:8080/MJServer/resources/images.zip"];4     NSURLSessionDownloadTask *task = [[NSURLSession sharedSession] downloadTaskWithURL:url completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {5         NSString *caches = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];6         [SSZipArchive unzipFileAtPath:location.path toDestination:caches];7     }];8     [task resume];9 }

 

   

iOS開發——網路編程OC篇&（八）檔案壓縮與解壓