iOS-SDK之如何实现管理文件?

罗列Bucket所有Object

1. OSSGetBucketRequest * getBucket = [OSSGetBucketRequest new];
2. getBucket.bucketName = @"<bucketName>";
4. // 可选参数，具体含义参考：https://docs.aliyun.com/#/pub/oss/api-reference/bucket&GetBucket
5. // getBucket.marker = @"";
6. // getBucket.prefix = @"";
7. // getBucket.delimiter = @"";
9. OSSTask * getBucketTask = [client getBucket:getBucket];
11. [getBucketTask continueWithBlock:^id(OSSTask *task) {
12.     if (!task.error) {
13.         OSSGetBucketResult * result = task.result;
14.         NSLog(@"get bucket success!");
15.         for (NSDictionary * objectInfo in result.contents) {
16.             NSLog(@"list object: %@", objectInfo);
17.         }
18.     } else {
19.         NSLog(@"get bucket failed, error: %@", task.error);
20.     }
21.     return nil;
22. }];

1. NSError * error = nil;
2. BOOL isExist = [client doesObjectExistInBucket:TEST_BUCKET withObjectKey:@"file1m" withError:&error];
3. if (!error) {
4.     if(isExist) {
5.         NSLog(@"File exists.");
6.     } else {
7.         NSLog(@"File not exists.");
8.     }
9. } else {
10.     NSLog(@"Error!");
11. }

1. OSSCopyObjectRequest * copy = [OSSCopyObjectRequest new];
2. copy.bucketName = @<bucketName>;
3. copy.objectKey = @"<objectKey>";
4. copy.sourceCopyFrom = [NSString stringWithFormat:@"/%@/%@", @"<bucketName>, @"<objectKey_copyFrom>"];
6. OSSTask * task = [client copyObject:copy];
8. [task continueWithBlock:^id(OSSTask *task) {
9.     if (!task.error) {
10.         // ...
11.     }
12.     return nil;s
13. }];

• 源Object和目标Object必须属于同一个数据中心。
• 如果拷贝操作的源Object地址和目标Object地址相同，可以修改已有Object的meta信息。
• 拷贝文件大小不能超过1G，超过1G需使用Multipart Upload操作。

1. OSSDeleteObjectRequest * delete = [OSSDeleteObjectRequest new];
2. delete.bucketName = @"<bucketName>";
3. delete.objectKey = @"<objectKey>";
5. OSSTask * deleteTask = [client deleteObject:delete];
7. [deleteTask continueWithBlock:^id(OSSTask *task) {
8.     if (!task.error) {
9.         // ...
10.     }
11.     return nil;
12. }];
14. // [deleteTask waitUntilFinished];

1. OSSHeadObjectRequest * head = [OSSHeadObjectRequest new];
2. head.bucketName = @"<bucketName>";
3. head.objectKey = @"<objectKey>";
5. OSSTask * headTask = [client headObject:head];
7. [headTask continueWithBlock:^id(OSSTask *task) {
8.     if (!task.error) {
9.         OSSHeadObjectResult * headResult = task.result;
10.         NSLog(@"all response header: %@", headResult.httpResponseHeaderFields);
12.         // some object properties include the 'x-oss-meta-*'s
13.         NSLog(@"head object result: %@", headResult.objectMeta);
14.     } else {
15.         NSLog(@"head object error: %@", task.error);
16.     }
17.     return nil;
18. }];