七牛云储存理解

来源：互联网发布：o2o网络便利店系统编辑：程序博客网时间：2024/06/01 08:09

1.获取用户编辑之后的图片

 if (editedImage) {        photoPath = [CacheUtil cachePhoto:editedImage];        [self uploadPhoto];    }

2.通过缓存工具取出路径
2.1获取缓存文件的路径

 `+ (NSString *)fileDirectory{    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);    NSString *documentDirectory = [paths objectAtIndex:0];    NSString * path = [NSString stringWithFormat:@"/%@",@"photoCache"];    NSString * fileDirectory = [documentDirectory stringByAppendingPathComponent:path];    NSFileManager * fileManager = [NSFileManager defaultManager];    if (![fileManager fileExistsAtPath:fileDirectory]) {        [fileManager createDirectoryAtPath:fileDirectory withIntermediateDirectories:YES attributes:nil error:nil];    }    return fileDirectory;}`

2.2
新建一个图片的路径，将图片压缩0.5 之后存进一个nsdata 里面。
将这个data写道指定路径的位置，返回这个路径。

+ (NSString *)cachePhoto:(UIImage *)photo{    NSString * photoPath = [[self fileDirectory ] stringByAppendingPathComponent:[photo imageDataMd5]];    //具体这段代码的意义需要再考证    NSData * data = UIImageJPEGRepresentation(photo, 0.5);    [data writeToFile:photoPath atomically:YES];    data = nil;    return photoPath;}

3.上传这个路径下的文件
3.1 首先从服务端获取token凭证

- (void)uploadFilePath:(NSString *)filePath formatType:(NSString *)formatType sender:(CompletionHandler)handler{    requestHander = handler;    [self requestToken];    m_filePath = filePath;    m_formatType = formatType;}

3.2
请求token之后执行上传

- (void)requestToken{    [AFHttpTool getTokenSuccess:^(AFHTTPRequestOperation *operation, id response) {        token = response[@"token"];        [self uploadFile];        //上传    } failure:^(id err) {        AFHTTPRequestOperation * op = err;        NSDictionary * response = [op.responseString jsonValue];        if (response[@"error"][@"message"]) {            [[[UIAlertView alloc] initWithTitle:nil message:response[@"error"][@"message"] delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil, nil] show];        }    }];}

3.3 上传图片到七牛

- (void)uploadFile{    QNUploadManager *upManager = [[QNUploadManager alloc] init];    NSData* data = [NSData dataWithContentsOfFile:m_filePath];    NSArray * tempQinniuStr = [m_filePath componentsSeparatedByString:@"/"];    //将上传过来的路径名分割成数组    //取出最后一个元素作为上传时候的key（相当于在七牛里面的唯一ID）；    NSString * qiniuFilePath2 = [NSString stringWithFormat:@"%@",[tempQinniuStr lastObject]];    [upManager putData:data key:qiniuFilePath2 token:token              complete: ^(QNResponseInfo *info, NSString *key, NSDictionary *resp) {                  NSLog(@"%@", info);                  NSLog(@"%@", key);                  qiniuFilePath = [NSString stringWithFormat:@"%@%@",kQiNiuDomain,key];                  requestHander(YES, qiniuFilePath);                  //上传成功block返回七牛里面的路径              } option:nil];}

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