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AndroidでUTF-8-MACなファイル名をS3からCognito経由でダウンロードするとAccess Deniedになる問題

Last updated at Posted at 2017-10-30

概要

UTF-8-MACなファイル(いわゆるOSXで濁点とかがついているファイル)をS3にアップロードして、Cognito経由でダウンロードしようとするとAccess Deniedとなる問題

Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied

↓OSXで作ったこういうファイル
image.png

↓実際のソースにコピペするとこんな感じ
image.png

結論

  • aws-android-sdk-s3のバージョンを2.3.+にする(2.4.+以上だと起きる)
  • 最新版2.6.6でも起きる(2017/10/30現在)
build.gradle
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    // AWS
    // 2.3.+系では動く
    compile 'com.amazonaws:aws-android-sdk-core:2.3.+'
    compile 'com.amazonaws:aws-android-sdk-s3:2.3.+'
    // 2.4.+系以上では動かない
    //compile 'com.amazonaws:aws-android-sdk-core:2.4.+'
    //compile 'com.amazonaws:aws-android-sdk-s3:2.4.+'
}

補足

一応issue立てたのでそのうち治るかもしれないですが、現状はバージョンを下げて対応しています。
ちなみにiOS版では起きないです。AndroidのSDKのバグです。

(そもそもそんな名前のファイルあげるなよって意見もあるかもですが)

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