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java-IllegalArgumentException:调用现有文件夹时URI不分层

作者:互联网

我正在这样做:

private boolean createCopy(String targetDirectory, String[] dataSet, String fileName, boolean overwrite) throws IOException, URISyntaxException
{
    fileName = "file:" + fileName.replace(" ","%20");
    URI uri = new URI("file:" + targetDirectory);
    Path dPath = Paths.get(uri);
    //code
 }

我得到这个异常:

Exception in thread "main" java.lang.IllegalArgumentException: URI is not hierarchical
at sun.nio.fs.WindowsUriSupport.fromUri(WindowsUriSupport.java:122)
at sun.nio.fs.WindowsFileSystemProvider.getPath(WindowsFileSystemProvider.java:92)
at java.nio.file.Paths.get(Paths.java:138)
...

Path dPath = Paths.get(uri);

线.有人知道为什么吗? targetDirectory只是一个简单的文件夹,既不是JAR文件也不是WAR文件;如果我取消

URI uri = new URI("file:" + targetDirectory);

我刚得到

Exception in thread "main" java.nio.file.FileSystemNotFoundException: Provider "DRIVE_LETTER" not installed
at java.nio.file.Paths.get(Paths.java:147)
...

“ DRIVE_LETTER”最终类似于“ C”或“ D”或“ E”.这是targetDirectory所在的驱动器.

编辑:

public static void main(String... args)
{
    Path path = null;
    try
    {
        Paths.get(new URI("file:E://HTML%20Processor//test//copies//"));
    }
    catch (URISyntaxException e)
    {
        e.printStackTrace();
    }
}

引发完全相同的异常,因为您想知道确切的调用.

编辑:将文件放在任何其他驱动器上没有区别; USB或SATA驱动器也没有区别.

解决方法:

它应该是file://而不是file:

标签:java-nio-file,uri,java
来源: https://codeday.me/bug/20191111/2017292.html