Overview

This document provides an overview of SDK code samples related to generating pre-signed object links.

SDK API Reference

For the parameters and method descriptions of all the APIs in the SDK, please see SDK API Reference.

Generating a Pre-signed Object Link

Sample 1. Generating a pre-signed upload link

Objective-C

QCloudGetPresignedURLRequest* getPresignedURLRequest = [[QCloudGetPresignedURLRequest alloc] init];

// Bucket name in the format: `BucketName-APPID`
getPresignedURLRequest.bucket = @"examplebucket-1250000000";

// HTTP method of the request using a pre-signed URL. Valid values (case-sensitive): @"GET", @"PUT", @"POST", @"DELETE"
getPresignedURLRequest.HTTPMethod = @"PUT";

// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "dir1/object1"
getPresignedURLRequest.object = @"exampleobject";

[getPresignedURLRequest setFinishBlock:^(QCloudGetPresignedURLResult * _Nonnull result,
                                         NSError * _Nonnull error) {

    // Pre-signed URL
    NSString* presignedURL = result.presienedURL;

}];

[[QCloudCOSXMLService defaultCOSXML] getPresignedURL:getPresignedURLRequest];

Note：

For more samples, please visit GitHub.

Swift

let getPresign  = QCloudGetPresignedURLRequest.init();

// Bucket name in the format: `BucketName-APPID`
getPresign.bucket = "examplebucket-1250000000" ;

// HTTP method of the request using a pre-signed URL. Valid values (case-sensitive):
// @"GET", @"PUT", @"POST", @"DELETE"
getPresign.httpMethod = "PUT";

// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "dir1/object1"
getPresign.object = "exampleobject";
getPresign.setFinish { (result, error) in
    if let result = result {
        let url = result.presienedURL
    } else {
        print(error!);
    }
}
QCloudCOSXMLService.defaultCOSXML().getPresignedURL(getPresign);

Note：

For more samples, please visit GitHub.

Sample 2. Generating a pre-signed download link

Objective-C

QCloudGetPresignedURLRequest* getPresignedURLRequest = [[QCloudGetPresignedURLRequest alloc] init];

// Bucket name in the format: `BucketName-APPID`
getPresignedURLRequest.bucket = @"examplebucket-1250000000";

// HTTP method of the request using a pre-signed URL. Valid values (case-sensitive): @"GET", @"PUT", @"POST", @"DELETE"
getPresignedURLRequest.HTTPMethod = @"GET";

// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "dir1/object1"
getPresignedURLRequest.object = @"exampleobject";

[getPresignedURLRequest setFinishBlock:^(QCloudGetPresignedURLResult * _Nonnull result,
                                         NSError * _Nonnull error) {
    // Pre-signed URL
    NSString* presignedURL = result.presienedURL;

}];

[[QCloudCOSXMLService defaultCOSXML] getPresignedURL:getPresignedURLRequest];

Note：

For more samples, please visit GitHub.

Swift

let getPresign  = QCloudGetPresignedURLRequest.init();

// Bucket name in the format: `BucketName-APPID`
getPresign.bucket = "examplebucket-1250000000" ;

// HTTP method of the request using a pre-signed URL. Valid values (case-sensitive):
// @"GET", @"PUT", @"POST", @"DELETE"
getPresign.httpMethod = "GET";

// Object key, i.e. the full path of a COS object. If the object is in a directory, the path should be "dir1/object1"
getPresign.object = "exampleobject";
getPresign.setFinish { (result, error) in
    if let result = result {
        let url = result.presienedURL
    } else {
        print(error!);
    }
}
QCloudCOSXMLService.defaultCOSXML().getPresignedURL(getPresign);

Note：

For more samples, please visit GitHub.