Android应用程序无法下载S3禁止（服务：Amazon S3；状态代码：403；错误代码：null）

我正在尝试读取s3存储桶的元数据（版本），然后决定是否需要下载sqlite.db文件

代码

private void downloadLatestSEZDBFile() {
        Object result;
        String finalDatabasePath = getFinalDatabasePath();
        s3client = new AmazonS3Client(
                new ClasspathPropertiesFileCredentialsProvider());
        try {
-->Exception here--> newVersion = Integer.valueOf((String) s3client.getObjectMetadata(
                    bucketName, sezDB).getRawMetadataValue(versionMetadata));
        } catch (NumberFormatException e) {

        }
        Log.d("myapp", "SEZDB version returned " + newVersion);
        File finalDatabase = new File(finalDatabasePath);
        if (newVersion == 1 || !finalDatabase.exists()) {
            copyVersion1FromAssets(finalDatabase);
            result = finalDatabase.getAbsolutePath();
        } else if (newVersion != God.getSEZDBVersion(context)) {
            GetObjectRequest objectRequest = new GetObjectRequest(bucketName,
                    sezDB);
            s3client.getObject(objectRequest, finalDatabase);
            result = finalDatabase.getAbsolutePath();
        } else
            result = null;

        if (result != null) {
            God.setSEZDBVersion(context, newVersion);
            sqliteDatabase = SQLiteDatabase.openOrCreateDatabase(
                    finalDatabasePath, null);
            God.initializeCityVariables(context);
        }
    }

我已将

AwsCredentials.properties

复制到我的

src

文件夹中

secretKey=<mysecretkey>
accessKey=<myaccesskey>

我错过了什么

编辑

我试着从这个代码，并没有改变相同的异常如上所述

我还尝试将AwsCredentials.properties的位置移动到libs文件夹。在这里，我得到了一个不同的异常，它暗示AwsCredentials.properties文件的位置应该在项目的src文件夹中，而不是libs文件夹中

03-09 19:19:57.109:E/AndroidRuntime（14502）：com.amazonaws.AmazonClientException:无法从类路径上的/AwsCredentials.properties文件加载AWS凭据

我使用IAM用户登录AWS，可以查看对象的元数据

---

@Praneet Sharma这个问题仍然没有解决。。

com.amazonaws.services.s3.model.AmazonS3Exception: Forbidden (Service: Amazon S3; Status Code: 403; Error Code: null; Request ID: DE30A17F3E9E3B1C), S3 Extended Request ID: fdl02MUW0qzC6WPzO52nUBCw4+LYxAPlUuPOWN2lJd+LRJLC/nUoM2AJip5yWxeG2fGhy7HIbLQ=
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.http.AmazonHttpClient.executeHelper(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.http.AmazonHttpClient.execute(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.services.s3.AmazonS3Client.invoke(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.services.s3.AmazonS3Client.getObjectMetadata(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.amazonaws.services.s3.AmazonS3Client.getObjectMetadata(Unknown Source)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.myapp.support.ActiveSEZDB.downloadLatestSEZDBFile(ActiveSEZDB.java:262)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.myapp.support.ActiveSEZDB.access$0(ActiveSEZDB.java:256)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at com.myapp.support.ActiveSEZDB$1.run(ActiveSEZDB.java:43)
03-09 09:26:34.195: E/AndroidRuntime(31116):    at java.lang.Thread.run(Thread.java:1019)
03-09 09:26:34.203: E/(1490): Dumpstate > /data/log/dumpstate_app_error
03-09 09:26:39.625: E/Launcher(1588): setWindowOpaque()