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HeadObject.m
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#import <XCTest/XCTest.h>
#import <QCloudCOSXML/QCloudCOSXML.h>
#import <QCloudCOSXML/QCloudUploadPartRequest.h>
#import <QCloudCOSXML/QCloudCompleteMultipartUploadRequest.h>
#import <QCloudCOSXML/QCloudAbortMultipfartUploadRequest.h>
#import <QCloudCOSXML/QCloudMultipartInfo.h>
#import <QCloudCOSXML/QCloudCompleteMultipartUploadInfo.h>
@interface HeadObject : XCTestCase <QCloudSignatureProvider, QCloudCredentailFenceQueueDelegate>
@property (nonatomic) QCloudCredentailFenceQueue* credentialFenceQueue;
@end
@implementation HeadObject
- (void)setUp {
// 注册默认的 COS 服务
QCloudServiceConfiguration* configuration = [QCloudServiceConfiguration new];
configuration.appID = @"1250000000";
configuration.signatureProvider = self;
QCloudCOSXMLEndPoint* endpoint = [[QCloudCOSXMLEndPoint alloc] init];
endpoint.regionName = @"ap-guangzhou";//服务地域名称,可用的地域请参考注释
configuration.endpoint = endpoint;
[QCloudCOSXMLService registerDefaultCOSXMLWithConfiguration:configuration];
[QCloudCOSTransferMangerService registerDefaultCOSTransferMangerWithConfiguration:configuration];
// 脚手架用于获取临时密钥
self.credentialFenceQueue = [QCloudCredentailFenceQueue new];
self.credentialFenceQueue.delegate = self;
}
- (void) fenceQueue:(QCloudCredentailFenceQueue * )queue requestCreatorWithContinue:(QCloudCredentailFenceQueueContinue)continueBlock
{
QCloudCredential* credential = [QCloudCredential new];
//在这里可以同步过程从服务器获取临时签名需要的 secretID,secretKey,expiretionDate 和 token 参数
credential.secretID = @"COS_SECRETID";
credential.secretKey = @"COS_SECRETKEY";
credential.token = @"COS_TOKEN";
/*强烈建议返回服务器时间作为签名的开始时间,用来避免由于用户手机本地时间偏差过大导致的签名不正确 */
credential.startDate = [[[NSDateFormatter alloc] init] dateFromString:@"startTime"]; // 单位是秒
credential.experationDate = [[[NSDateFormatter alloc] init] dateFromString:@"expiredTime"];
QCloudAuthentationV5Creator* creator = [[QCloudAuthentationV5Creator alloc]
initWithCredential:credential];
continueBlock(creator, nil);
}
- (void) signatureWithFields:(QCloudSignatureFields*)fileds
request:(QCloudBizHTTPRequest*)request
urlRequest:(NSMutableURLRequest*)urlRequst
compelete:(QCloudHTTPAuthentationContinueBlock)continueBlock
{
[self.credentialFenceQueue performAction:^(QCloudAuthentationCreator *creator,
NSError *error) {
if (error) {
continueBlock(nil, error);
} else {
QCloudSignature* signature = [creator signatureForData:urlRequst];
continueBlock(signature, nil);
}
}];
}
/**
* 1:HEAD Object 接口请求可以判断指定对象是否存在和有权限,并在指定对象可访问时获取其元数据。
* 该 API 的请求者需要对目标对象有读取权限,或者目标对象向所有人开放了读取权限(公有读)。
*
* 2:当启用版本控制时,该 HEAD 操作可以使用 versionId 请求参数指定要返回的版本 ID,此时将返回
* 指定版本的元数据,如指定版本为删除标记则返回 HTTP 响应码404(Not Found),否则将返回最新
* 版本的元数据。
*/
- (void)headObject {
//.cssg-snippet-body-start:[objc-head-object]
QCloudHeadObjectRequest* headerRequest = [QCloudHeadObjectRequest new];
// 对象键,是对象在 COS 上的完整路径,如果带目录的话,格式为 "dir1/object1"
headerRequest.object = @"exampleobject";
// versionId 当启用版本控制时,指定要查询的版本 ID,如不指定则查询对象的最新版本
headerRequest.versionID = @"versionID";
// 存储桶名称,格式为 BucketName-APPID
headerRequest.bucket = @"examplebucket-1250000000";
[headerRequest setFinishBlock:^(NSDictionary* result, NSError *error) {
// result 返回具体信息
}];
[[QCloudCOSXMLService defaultCOSXML] HeadObject:headerRequest];
//.cssg-snippet-body-end
}
// .cssg-methods-pragma
- (void)testHeadObject {
// 获取对象信息
[self headObject];
// .cssg-methods-pragma
}
@end