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(Objective-C) Upload File with User-Defined MetadataDemonstrates how to upload a file with user-defined metadata to the Amazon S3 service.
#import <CkoHttp.h> #import <NSString.h> // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkoHttp *http = [[CkoHttp alloc] init]; // Insert your AWS keys here: http.AwsAccessKey = @"AWS_ACCESS_KEY"; http.AwsSecretKey = @"AWS_SECRET_KEY"; NSString *bucketName = @"chilkat.ocean"; NSString *objectName = @"seahorse.jpg"; NSString *localFilePath = @"qa_data/jpg/seahorse.jpg"; NSString *contentType = @"image/jpg"; // User-defined metadata are name/value pairs, and are added to the HTTP request header. // Header names must begin with "x-amz-meta-" to distinguish them from other HTTP headers. // Note that Amazon S3 stores user-defined metadata keys in lowercase. // For example, to add genus=Hippocampus, we do this: [http SetRequestHeader: @"x-amz-meta-genus" value: @"Hippocampus"]; // Add a few more user-metadata key pairs. [http SetRequestHeader: @"x-amz-meta-species" value: @"big-belly seahorse"]; [http SetRequestHeader: @"x-amz-meta-habitat" value: @"shallow tropical and temperate waters"]; BOOL success = [http S3_UploadFile: localFilePath contentType: contentType bucketName: bucketName ObjectName: objectName]; if (success != YES) { NSLog(@"%@",http.LastErrorText); } else { NSLog(@"%@",@"File uploaded."); } |
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