AWS S3 对象存储服务

虽然亚马逊云非常牛逼,虽然亚马逊云财大气粗,虽然亚马逊用的人也非常多,可是这个文档我简直无法接受,特别是客服,令人发指的回复速度,瞬间让人无语,可是毕竟牛逼.忍了,躺一次坑而已

1.图片上传

1.1

S3 Java SDK 分两个版本,1.0和2.0 , 1.0 的S3对象是AmazonS3 ,2.0的忘记了,下面的示例代码,是1.0版本的

1.2导包

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.amazonaws</groupId>
                <artifactId>aws-java-sdk-bom</artifactId>
                <version>1.11.558</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-s3</artifactId>
        </dependency>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-s3control</artifactId>
        </dependency>
    </dependencies>

1.3代码,已经可以运行了,但是还需要配置Id和秘钥

public static void main(String[] args) throws Exception {
        String clientRegion = "ap-east-1";
        String bucketName = "hotupdates";
        String keyName = "abc/demo.txt";
        String filePath = "C:\Users\Owner\Desktop\demo.txt";

        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(clientRegion)
                    .withCredentials(new ProfileCredentialsProvider())
                    .build();
            TransferManager tm = TransferManagerBuilder.standard()
                    .withS3Client(s3Client)
                    .build();
            Upload upload = tm.upload(bucketName, keyName, new File(filePath));
            System.out.println("Object upload started");
            upload.waitForCompletion();
            tm.shutdownNow();
            System.out.println("Object upload complete");
        }
        catch(AmazonServiceException e) {
            e.printStackTrace();
        }
        catch(SdkClientException e) {
            e.printStackTrace();
        }
    }

1.4 配置ID和秘钥

Windows 在C:Usersxxx.aws这个文件下面创建两个文件,没有后缀的哟
文件1:config

[default]
region = ap-east-1

文件2:credentials

[default]
aws_access_key_id=xxxxxxxxxxxxxxxxxxx
aws_secret_access_key=xxxxxxxxxxxxxxxxxxx

1.5 到这就可以运行了

1.6 想要在上传的时候打印进度条

public class HighLevelMultipartUpload2 {

    public static void main(String[] args) throws Exception {
        String clientRegion = "ap-east-1";
        String bucketName = "hotupdates";
        String keyName = "abc/demo.txt";
        String filePath = "C:\Users\Owner\Desktop\demo.txt";

        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(clientRegion)
                    .withCredentials(new ProfileCredentialsProvider())
                    .build();
            TransferManager tm = TransferManagerBuilder.standard()
                    .withS3Client(s3Client)
                    .build();

            // TransferManager processes all transfers asynchronously,
            // so this call returns immediately.
            Upload upload = tm.upload(bucketName, keyName, new File(filePath));
            System.out.println("Object upload started");

            // Optionally, wait for the upload to finish before continuing.
            upload.waitForCompletion();


            tm.shutdownNow();
//            XferMgrProgress.showTransferProgress(upload);
//            XferMgrProgress.waitForCompletion(upload);


            System.out.println("Object upload complete");
        }
        catch(AmazonServiceException e) {
            e.printStackTrace();
        }
        catch(SdkClientException e) {
            e.printStackTrace();
        }
    }
}

public class XferMgrProgress
{
    // waits for the transfer to complete, catching any exceptions that occur.
    public static void waitForCompletion(Transfer xfer)
    {
        try {
            xfer.waitForCompletion();
        } catch (AmazonServiceException e) {
            System.err.println("Amazon service error: " + e.getMessage());
            System.exit(1);
        } catch (AmazonClientException e) {
            System.err.println("Amazon client error: " + e.getMessage());
            System.exit(1);
        } catch (InterruptedException e) {
            System.err.println("Transfer interrupted: " + e.getMessage());
            System.exit(1);
        }
    }

    // Prints progress while waiting for the transfer to finish.
    public static void showTransferProgress(Transfer xfer)
    {
        // print the transfer's human-readable description
        System.out.println(xfer.getDescription());
        // print an empty progress bar...
        printProgressBar(0.0);
        // update the progress bar while the xfer is ongoing.
        do {
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                return;
            }
            // Note: so_far and total aren't used, they're just for
            // documentation purposes.
            TransferProgress progress = xfer.getProgress();
            long so_far = progress.getBytesTransferred();
            long total = progress.getTotalBytesToTransfer();
            double pct = progress.getPercentTransferred();
            eraseProgressBar();
            printProgressBar(pct);
        } while (xfer.isDone() == false);
        // print the final state of the transfer.
        Transfer.TransferState xfer_state = xfer.getState();
        System.out.println(": " + xfer_state);
    }

    // Prints progress of a multiple file upload while waiting for it to finish.
    public static void showMultiUploadProgress(MultipleFileUpload multi_upload)
    {
        // print the upload's human-readable description
        System.out.println(multi_upload.getDescription());

        Collection<? extends Upload> sub_xfers = new ArrayList<Upload>();
        sub_xfers = multi_upload.getSubTransfers();

        do {
            System.out.println("
Subtransfer progress:
");
            for (Upload u : sub_xfers) {
                System.out.println("  " + u.getDescription());
                if (u.isDone()) {
                    Transfer.TransferState xfer_state = u.getState();
                    System.out.println("  " + xfer_state);
                } else {
                    TransferProgress progress = u.getProgress();
                    double pct = progress.getPercentTransferred();
                    printProgressBar(pct);
                    System.out.println();
                }
            }

            // wait a bit before the next update.
            try {
                Thread.sleep(200);
            } catch (InterruptedException e) {
                return;
            }
        } while (multi_upload.isDone() == false);
        // print the final state of the transfer.
        Transfer.TransferState xfer_state = multi_upload.getState();
        System.out.println("
MultipleFileUpload " + xfer_state);
    }

    // prints a simple text progressbar: [#####     ]
    public static void printProgressBar(double pct)
    {
        // if bar_size changes, then change erase_bar (in eraseProgressBar) to
        // match.
        final int bar_size = 40;
        final String empty_bar = "                                        ";
        final String filled_bar = "########################################";
        int amt_full = (int)(bar_size * (pct / 100.0));
        System.out.format("  [%s%s]", filled_bar.substring(0, amt_full),
                empty_bar.substring(0, bar_size - amt_full));
    }

    // erases the progress bar.
    public static void eraseProgressBar()
    {
        // erase_bar is bar_size (from printProgressBar) + 4 chars.
        final String erase_bar = "";
        System.out.format(erase_bar);
    }

    public static void uploadFileWithListener(String file_path,
                                              String bucket_name, String key_prefix, boolean pause)
    {
        System.out.println("file: " + file_path +
                (pause ? " (pause)" : ""));

        String key_name = null;
        if (key_prefix != null) {
            key_name = key_prefix + '/' + file_path;
        } else {
            key_name = file_path;
        }

        File f = new File(file_path);
        TransferManager xfer_mgr = TransferManagerBuilder.standard().build();
        try {
            Upload u = xfer_mgr.upload(bucket_name, key_name, f);
            // print an empty progress bar...
            printProgressBar(0.0);
            u.addProgressListener(new ProgressListener() {
                public void progressChanged(ProgressEvent e) {
                    double pct = e.getBytesTransferred() * 100.0 / e.getBytes();
                    eraseProgressBar();
                    printProgressBar(pct);
                }
            });
            // block with Transfer.waitForCompletion()
            XferMgrProgress.waitForCompletion(u);
            // print the final state of the transfer.
            Transfer.TransferState xfer_state = u.getState();
            System.out.println(": " + xfer_state);
        } catch (AmazonServiceException e) {
            System.err.println(e.getErrorMessage());
            System.exit(1);
        }
        xfer_mgr.shutdownNow();
    }

    public static void uploadDirWithSubprogress(String dir_path,
                                                String bucket_name, String key_prefix, boolean recursive,
                                                boolean pause)
    {
        System.out.println("directory: " + dir_path + (recursive ?
                " (recursive)" : "") + (pause ? " (pause)" : ""));

        TransferManager xfer_mgr = new TransferManager();
        try {
            MultipleFileUpload multi_upload = xfer_mgr.uploadDirectory(
                    bucket_name, key_prefix, new File(dir_path), recursive);
            // loop with Transfer.isDone()
            XferMgrProgress.showMultiUploadProgress(multi_upload);
            // or block with Transfer.waitForCompletion()
            XferMgrProgress.waitForCompletion(multi_upload);
        } catch (AmazonServiceException e) {
            System.err.println(e.getErrorMessage());
            System.exit(1);
        }
        xfer_mgr.shutdownNow();
    }

    public static void main(String[] args)
    {
        final String USAGE = "
" +
                "Usage:
" +
                "    XferMgrProgress [--recursive] [--pause] <s3_path> <local_path>

" +
                "Where:
" +
                "    --recursive - Only applied if local_path is a directory.
" +
                "                  Copies the contents of the directory recursively.

" +
                "    --pause     - Attempt to pause+resume the upload. This may not work for
" +
                "                  small files.

" +
                "    s3_path     - The S3 destination (bucket/path) to upload the file(s) to.

" +
                "    local_path  - The path to a local file or directory path to upload to S3.

" +
                "Examples:
" +
                "    XferMgrProgress public_photos/cat_happy.png my_photos/funny_cat.png
" +
                "    XferMgrProgress public_photos my_photos/cat_sad.png
" +
                "    XferMgrProgress public_photos my_photos

";

        if (args.length < 2) {
            System.out.println(USAGE);
            System.exit(1);
        }

        int cur_arg = 0;
        boolean recursive = false;
        boolean pause = false;

        // first, parse any switches
        while (args[cur_arg].startsWith("--")) {
            if (args[cur_arg].equals("--recursive")) {
                recursive = true;
            } else if (args[cur_arg].equals("--pause")) {
                pause = true;
            } else {
                System.out.println("Unknown argument: " + args[cur_arg]);
                System.out.println(USAGE);
                System.exit(1);
            }
            cur_arg += 1;
        }

        // only the first '/' character is of interest to get the bucket name.
        // Subsequent ones are part of the key name.
        String s3_path[] = args[cur_arg].split("/", 2);
        cur_arg += 1;

        String bucket_name = s3_path[0];
        String key_prefix = null;
        if (s3_path.length > 1) {
            key_prefix = s3_path[1];
        }

        String local_path = args[cur_arg];

        // check to see if local path is a directory or file...
        File f = new File(args[cur_arg]);
        if (f.exists() == false) {
            System.out.println("Input path doesn't exist: " + args[cur_arg]);
            System.exit(1);
        }
        else if (f.isDirectory()) {
            uploadDirWithSubprogress(local_path, bucket_name, key_prefix,
                    recursive, pause);
        } else {
            uploadFileWithListener(local_path, bucket_name, key_prefix, pause);
        }
    }
}

参考官网:https://docs.aws.amazon.com/zh_cn/sdk-for-java/v1/developer-guide/credentials.html

2.其余的一些配置

2.1跨域

<CORSConfiguration>
 <CORSRule>
   <AllowedOrigin>*</AllowedOrigin>
   <AllowedMethod>PUT</AllowedMethod>
   <AllowedMethod>POST</AllowedMethod>
   <AllowedMethod>DELETE</AllowedMethod>
   <AllowedMethod>GET</AllowedMethod>
   <AllowedMethod>HEAD</AllowedMethod>
   <AllowedHeader>*</AllowedHeader>
  <MaxAgeSeconds>3000</MaxAgeSeconds>
 </CORSRule>
</CORSConfiguration>

2.2 存储桶策略

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt1546506260886",
            "Effect": "Allow",
            "Principal": {
                "AWS": "*"
            },
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::apk-online/*"
        }
    ]
}

apk-online 是桶名