目标:尝试在 maven 项目中创建文本文件并将其写入目标文件夹
方法:
public synchronized void writeToFile(List<String> list, String file) {
String path = MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath();
try {
Path out = Paths.get( path + file);
Files.write(out, list, Charset.defaultCharset());
} catch (IOException e) {
e.printStackTrace();
}
}
问题:
java.nio.file.InvalidPathException error
应用程序将部署在不同的系统上,因此路径可能会更改
我不知道如何在不检索此错误的情况下返回这种情况的目标路径
错误:
Exception in thread "main" java.nio.file.InvalidPathException: Illegal char <:> at index 2: /C:/Users/jquinn/IdeaProjects/Exercise1/Word%20Scraper%20-%20Java/target/classes/exclusions.txt
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 FileManager.writeToFile(FileManager.java:58)
at Driver.main(Driver.java:21)
第一个/
导致字符串出现问题。如果没有它,您必须获得完整的字符串。
我已经尝试与我的班级一起实现它:
String path = Test.class.getProtectionDomain().getCodeSource().getLocation().getPath();
path = path.substring(1, path.length()) + "file.txt";
System.out.println(path);
Path out = Paths.get(path);
System.out.println(out.isAbsolute());
输出:
F:/software/workspace/file.txt
true
只需使用这个
String pathTemp=System.getProperty("user.dir"); //it will give the root directory of where your program runs
String pathTemp=pathTemp+"/target/"+fileName; //here file name from the argument
Path path=Paths.get(pathTemp);
Files.write(path,list,Charset.defaultCharset());