Java 从NAS读取时发生FileNotFoundException，并出现内部错误

我们得到了一个奇怪的FileNotFoundException，我们知道文件在那里，但是Java抛出了一个FileNotFoundException（发生了一个内部错误）。出于某种原因，当我们尝试为文件创建FileInputStream时，会出现以下异常。更有趣的是，这是一个断断续续的问题。通常，如果我们等待一段时间，然后重新运行我们的作业，它就会工作。想知道是否有人见过这一点，并可以提供一些见解。任何人都会遇到一个事先没有收到感谢的文件

错误：

2017-07-24 22:21:53,838 [processorExecutor-47041-3-] ERROR FileReaderController - error while reading file: \\<some path to a nas>\2017-07-24\r_i_t_2808732.rdb
java.io.FileNotFoundException: \\<some path to a nas>\2017-07-24\r_i_t_2808732.rdb (An internal error occurred)
    at java.io.FileInputStream.open0(Native Method)
    at java.io.FileInputStream.open(FileInputStream.java:195)
    at java.io.FileInputStream.<init>(FileInputStream.java:138)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)

额外的日志输出。它清楚地表明文件就在那里。重试尝试也失败

2017-07-24 22:21:08,784 [processorExecutor-47041-3-] INFO  FileReaderController - File status:
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   exists:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   isFile:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   isHidden:false
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   canRead:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   length:7460
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   lastModified:2017-07-24T22:17:48.716
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController - Retrying in 5s

---

检查文件是否已被授予读取或写入权限。我建议使用

java.nio.file.Files.newInputStream（路径，OpenOption…

打开

InputStream

更新问题。如果我们等待并稍后再处理，它通常是有效的。此外，不要认为这是一个许可问题，因为它会说访问被拒绝。

2017-07-24 22:21:08,784 [processorExecutor-47041-3-] INFO  FileReaderController - File status:
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   exists:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   isFile:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   isHidden:false
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   canRead:true
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   length:7460
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController -   lastModified:2017-07-24T22:17:48.716
2017-07-24 22:21:08,800 [processorExecutor-47041-3-] INFO  FileReaderController - Retrying in 5s