将文件从源复制到目标 java 时出错
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Error while copying files from source to destination java
提问by user2136160
//original file
Path original = Paths.get("C:\Users\Laksahan\Desktop\bg.jpg");
File f = new File("C:\Users\Laksahan\Desktop\bg.jpg");
// new file
Path destination = Paths.get("C:\Program Files\Tour v0.1\image\"+f.getName());
try {
Files.copy(original, destination, LinkOption.NOFOLLOW_LINKS);
} catch (IOException x) {
x.printStackTrace();
}
i tried above method to copy files, it wont work and it prints this error
我试过上面的方法来复制文件，它不起作用，它打印了这个错误
java.nio.file.NoSuchFileException: C:\Users\Laksahan\Desktop\bg.jpg -> C:\Program Files\Tour v0.1\image\bg.jpg
please help
请帮忙
回答by user2136160
Try
尝试
Path original = Paths.get("C:\Users\Laksahan\Desktop\bg.jpg");
instead of
代替
Path original = Paths.get("C:\Users\Laksahan\Desktop\bg.jpg");
Create a folder programmatically for example -
例如，以编程方式创建一个文件夹 -
Path from = Paths.get("C:\Users\Laksahan\Desktop\bg.jpg");
Path to = Paths.get("C:\Program Files\Tour v0.1\image\");
Path destination;
File f = new File("C:\Users\Laksahan\Desktop\bg.jpg");
if (!Files.exists(to)) {
try {
Files.createDirectories(to);
} catch (IOException ioe) {
ioe.printStackTrace();
}
destination = Paths.get(to.toString() + "\" + f.getName());
try {
Files.copy(from, destination, LinkOption.NOFOLLOW_LINKS);
} catch (FileAlreadyExistsException faee) {
faee.printStackTrace();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
回答by Sotirios Delimanolis
Java 7's NIO will not create a folder if it doesn't exist when usingFiles.copy().
Java 7 的 NIO在使用Files.copy().
The best you can do is check for the folder and create it if it doesn't exist before you call copy.
您能做的最好的事情是检查文件夹并在您调用之前创建它，如果它不存在copy。
回答by Ankit
I am not sure about your work environment, but if it is anything newer than windows-XP the location "C:\\Program Files\\"is inaccessible by anyone except installer service, or unless you explicitly provide the permission through security settings.
我不确定您的工作环境，但如果它比 windows-XP 更新，"C:\\Program Files\\"则除了安装程序服务外，任何人都无法访问该位置，或者除非您通过安全设置明确提供权限。
you try copying to any other location. it should work
您尝试复制到任何其他位置。它应该工作
