在 spring-boot 中从 application.yaml 文件读取 SSH 私钥？

Question

我有一个骆驼应用程序，它使用 SSH 私钥连接到 SFTP 服务器。如果我从文件中读取 id_rsa 文件，我就能够连接到服务器。如本例所示，它正在处理从文件加载。

registry.put("privateKey", getBytesFromFile("./src/main/resources/id_rsa"));

private byte[] getBytesFromFile(String filename) throws IOException {
    InputStream input;
    input = new FileInputStream(new File(filename));
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    IOHelper.copyAndCloseInput(input, output);
    return output.toByteArray();
}

我想在运行时动态提供私钥。这意味着在 spring-boot 应用程序中的 application.yaml 中，它将被 docker 容器环境变量替换。

@Value("${sftp_private_key}")
private String privateKey;

registry.put("privateKey", privateKey.getBytes());

我收到此异常

org.apache.camel.component.file.GenericFileOperationFailedException: Cannot connect to sftp://<user>@<sftp_server>:22
    at org.apache.camel.component.file.remote.SftpOperations.connect(SftpOperations.java:146) ~[camel-ftp-2.19.1.jar:2.19.1]
    at org.apache.camel.component.file.remote.RemoteFileConsumer.connectIfNecessary(RemoteFileConsumer.java:203) [camel-ftp-2.19.1.jar:2.19.1]
    at org.apache.camel.component.file.remote.RemoteFileConsumer.recoverableConnectIfNecessary(RemoteFileConsumer.java:171) [camel-ftp-2.19.1.jar:2.19.1]
    at org.apache.camel.component.file.remote.RemoteFileConsumer.prePollCheck(RemoteFileConsumer.java:59) [camel-ftp-2.19.1.jar:2.19.1]
    at org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:110) [camel-core-2.19.1.jar:2.19.1]
    at org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:174) [camel-core-2.19.1.jar:2.19.1]
    at org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:101) [camel-core-2.19.1.jar:2.19.1]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_121]
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_121]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_121]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_121]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
Caused by: com.jcraft.jsch.JSchException: invalid privatekey: [B@5e200110
    at com.jcraft.jsch.KeyPair.load(KeyPair.java:757) ~[jsch-0.1.54.jar:na]
    at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.java:46) ~[jsch-0.1.54.jar:na]
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:442) ~[jsch-0.1.54.jar:na]
    at org.apache.camel.component.file.remote.SftpOperations.createSession(SftpOperations.java:220) ~[camel-ftp-2.19.1.jar:2.19.1]
    at org.apache.camel.component.file.remote.SftpOperations.connect(SftpOperations.java:115) ~[camel-ftp-2.19.1.jar:2.19.1]
    ... 13 common frames omitted

经过一些调试后，我明白这是\n characters. 如果我从文件中读取私钥包含 \n 个字符。但是如果我从 .yaml 文件中读取，它没有 \n 字符。我将所有新行替换为 \n 字符并将其转换为单行。还是不行。

我如何提供application.yaml相当于从该文件中读取的值？

Answer 1

正如这里所解释的，它正在与|

示例application.yaml：

sftp_private_key: |
                  ----BEGIN RSA PRIVATE KEY-----
                     Remaining part of key
                  -----END RSA PRIVATE KEY-----