线程“main”中的异常 java.nio.file.InvalidPathException: Illegal char <:> at index 2:
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Exception in thread "main" java.nio.file.InvalidPathException: Illegal char <:> at index 2:
提问by Jay Smith
I have to copy classpath resource from one package to another.
我必须将类路径资源从一个包复制到另一个包。
My program is:
我的程序是：
public static void main(String[] args) throws IOException, URISyntaxException {
ClassLoader classLoader = CopyFileToDirectoryTest.class.getClassLoader();
InputStream in = classLoader.getResourceAsStream("com/stackoverflow/main/Movie.class");
URI uri = ClassLoader.getSystemResource("com/stackoverflow/json").toURI();
Path path = Paths.get(uri.getPath(),"Movie.class");
System.out.println(path);
long copy = Files.copy(in, path, StandardCopyOption.REPLACE_EXISTING);
System.out.println(copy);
}
At Files.copymethod I get exception:
在Files.copy方法我得到异常：
Exception in thread "main" java.nio.file.InvalidPathException: Illegal char <:> at index 2: /D:/Programs/workspaceEE/HibernateDemo/target/classes/com/stackoverflow/json
at sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:182)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:153)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
at java.nio.file.Paths.get(Paths.java:84)
at com.stackoverflow.main.CopyFileToDirectoryTest.main(CopyFileToDirectoryTest.java:34)
How to solve it?
如何解决？
Solution
解决方案
public static void main(String[] args) throws IOException, URISyntaxException {
ClassLoader classLoader = CopyFileToDirectoryTest.class.getClassLoader();
InputStream in = classLoader.getResourceAsStream("com//stackoverflow//main//Movie.class");
URI uri = ClassLoader.getSystemResource("com//stackoverflow//json").toURI();
String mainPath = Paths.get(uri).toString();
Path path = Paths.get(mainPath, "Movie.class");
System.out.println(path);
long copy = Files.copy(in, path, StandardCopyOption.REPLACE_EXISTING);
System.out.println(copy);
}
This code correctly copies Movie.classfrom package com/stackoverflow/maininto com/stackoverflow/json.
此代码正确地Movie.class从包复制com/stackoverflow/main到com/stackoverflow/json.
采纳答案by hunter
problem is that Paths.get()doesnt expect that kind of value which is generated from uri.getPath().
问题是Paths.get()不期望从uri.getPath().
Solution:
解决方案：
URI uri = ClassLoader.getSystemResource("com/stackoverflow/json").toURI();
String mainPath = Paths.get(uri).toString();
Path path = Paths.get(mainPath ,"Movie.class");
回答by techguy
I had the same issue and got the exception, noticed there was a space in the filename, so I had to trim it. After that, the issue is resolved.
我遇到了同样的问题并得到了异常，注意到文件名中有一个空格，所以我不得不修剪它。之后，问题就解决了。
Path filePath = Paths.get(dirPathStr, newFileName.trim());
回答by SUDIP SINGH
I have the same problem which I was facing from the past two days and finally, I got it Space causes such problem try to solve
我遇到了过去两天遇到的同样问题，最后，我明白了空间导致此类问题尝试解决
var fileName=YourFileName.trim();
Path filePath = Paths.get(dirPathStr, fileName);
回答by Fego
Try this:
尝试这个：
Path path = new File(getClass().getResource("/<path to the image in your build/classes folder>").getFile()).toPath();
Path path = new File(getClass().getResource("/<path to the image in your build/classes folder>").getFile()).toPath();
to get the correct path. Worked for me after several hours trying to find out why I couldn't get the file from the jar. THis works for NetBeans 8.02
以获得正确的路径。几个小时后为我工作，试图找出为什么我无法从 jar 中获取文件。这适用于 NetBeans 8.02
