通过网络路径读取文件 [英] Reading a file over a network path

问题描述

我有这个奇怪的问题，当我使用

  File FileToRead = new File（\\\\\ \\MYSERVER\\MYFOLDER\\MYFOLDER\\MYPICTURE.JPG）; 
  

通过网络读取文件，我得到的只是一个空指针异常。通常情况下，本地路径与此一起工作，但是当在网络路径上时，我无法设法使其工作。任何想法？

PS：哦，我的网络连接似乎工作，访问Windows资源管理器中的数据时没有问题...

更多代码：

 文件FileToRead =新文件（file：// DOKSERVICE / Somefolder / ProductImage /01001.JPG）; 
 // File FileToRead = new File（c：\\dog.jpg）;本地测试
 BufferedImage image = ImageIO.read（FileToRead）; 
 BufferedImage resizedimage = new BufferedImage（260，260，BufferedImage.TYPE_INT_RGB）; 
 Graphics2D g = resizedimage.createGraphics（）; 
 g.drawImage（image，0，0，260，260，null）; 
 g.dispose（）; 
 picture.setIcon（new ImageIcon（image））; 
  

解决方案

只需指定文件路径为URI：

  File FileToRead = new File（new URI（file：//MYSERVER/MYFOLDER/MYFOLDER/MYPICTURE.JPG））; 
  

编辑注意那个字符串是一个URI！它不能包含空格，所以你必须用％20替换它们才能工作。

I have this weird issue, when I use

File FileToRead = new File("\\\\MYSERVER\\MYFOLDER\\MYFOLDER\\MYPICTURE.JPG");

to read a file over a network, all I get is a null pointer exception. Normally a local path works with this, but when on a network path, I just couldn't manage to get it to work. Any ideas?

PS: oh and my network connection seems to work, no issues when accessing data in windows explorer...

More of the code:

File FileToRead = new File("file://DOKSERVICE/Somefolder/ProductImage/01001.JPG");
//File FileToRead = new File("c:\\dog.jpg"); local test
BufferedImage image = ImageIO.read(FileToRead);
BufferedImage resizedimage = new BufferedImage(260, 260,BufferedImage.TYPE_INT_RGB ); 
Graphics2D g = resizedimage.createGraphics();  
g.drawImage(image, 0, 0, 260, 260, null);  
g.dispose(); 
picture.setIcon(new ImageIcon(image));

解决方案

Just specify the file path as URI:

File FileToRead = new File(new URI("file://MYSERVER/MYFOLDER/MYFOLDER/MYPICTURE.JPG"));

EDIT note that that string is an URI! It cannot contain spaces so you have to replace them with "%20" to make it work.

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