获取" java.nio.file.AccessDeniedException"当试图写入一个文件夹 [英] Getting "java.nio.file.AccessDeniedException" when trying to write to a folder

问题描述

由于某些原因，我每次尝试使用tomcat上的java webapp写入我的计算机上的文件夹时，都不断收到java.nio.file.AccessDeniedException。此文件夹的权限设置为完全控制我的计算机上的每个人（Windows）。所以我不知道为什么我会得到这个。任何人都知道为什么？

这里是我的代码。

  public void saveDocument （String name，String siteID，byte doc []）{
 try {
 
 Path path = Paths.get（rootDirectory + siteID）; 
 if（Files.exists（path））{
 System.out.println（Exists：+ path.toString（））; 
 Files.write（path，doc）; 
} else {
 System.out.println（不存在）; 
抛出新的异常（带有ID的站点的目录+ siteID +不存在）; 
 
 $ b $ catch（FileSystemException e）{
 System.out.println（Exception：+ e）; 
 e.printStackTrace（）; 
 catch（IOException e）{
 System.out.println（Exception：+ e）; 
 e.printStackTrace（）; 
} catch（Exception e）{
 System.out.println（Exception：+ e）; 
 e.printStackTrace（）; 
 
 
 
 
 
 
这里是错误。
 
 
 异常：java.nio.file.AccessDeniedException：C：\safesite_documents\site1 
 java.nio.file.AccessDeniedException：C：\safesite_documents\\ \\ site1 
 at sun.nio.fs.WindowsException.translateToIOException（WindowsException.java:83）
 at sun.nio.fs.WindowsException.rethrowAsIOException（WindowsException.java:97）
在sun .nio.fs.WindowsException.rethrowAsIOException（WindowsException.java:102）
 at sun.nio.fs.WindowsFileSystemProvider.newByteChannel（WindowsFileSystemProvider.java:230）
 at java.nio.file.spi.FileSystemProvider .newOutputStream（FileSystemProvider.java:430）
位于java.nio.file.Files.newOutputStream（Files.java:172）
位于java.nio.file.Files.write（Files.java:3092 ）
  
可能的原因： 
 
 
 < a href =https://superuser.com/questions/881348/cant-unset-read-only-only-applies-to-files-in-folder-in- windows-7>在超级用户上查看我的帖子，了解如何在Windows 7上无法取消选中只读文件夹。即使所有文件夹都不能读取除java以外的其他文件夹。 
解决方案
好的，事实证明我是在做一些愚蠢的事情。我没有将新的文件名添加到路径中。 
我有rootDirectory =C：\ safesite_documents，但它应该是rootDirectory =C：\safesite_documents\\\
ewFile.jpg。
 
 <对不起，这是一个愚蠢的错误一如既往。
 
For some reason I keep getting "java.nio.file.AccessDeniedException" every time I try to write to a folder on my computer using a java webapp on tomcat. This folder has permissions set to full control for everyone on my computer (Windows). So I don't know why I would be getting this. Anyone know why?

Here's my code.
 public void saveDocument(String name, String siteID, byte doc[]) {
    try {

        Path path = Paths.get(rootDirectory + siteID);
        if (Files.exists(path)) {
            System.out.println("Exists: " + path.toString());
            Files.write(path, doc);
        } else {
            System.out.println("DOesn't exist");
            throw new Exception("Directory for Site with ID " + siteID + "doesn't exist");
        }

    } catch (FileSystemException e) {
        System.out.println("Exception: " + e);
        e.printStackTrace();
    } catch (IOException e ) {
        System.out.println("Exception: " + e);
        e.printStackTrace();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
        e.printStackTrace();
    }
And here is the error.
Exception: java.nio.file.AccessDeniedException: C:\safesite_documents\site1
java.nio.file.AccessDeniedException: C:\safesite_documents\site1
at         sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83)
at     sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102)
at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:230)
at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:430)
at java.nio.file.Files.newOutputStream(Files.java:172)
at java.nio.file.Files.write(Files.java:3092)
Possible reason why: 

See my post on supersuser about how I can't uncheck 'Read Only' for any of my folders on windows 7. Even though all the folders aren't read only to anything but java.
解决方案
Ok it turns out I was doing something stupid. I hadn't appended the new file name to the path.
I had "rootDirectory = "C:\safesite_documents" but it should have been 'rootDirectory = "C:\safesite_documents\newFile.jpg". 

Sorry it was a stupid mistake as always.

                        
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