java – 如何根据操作系统更改文件路径

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我有一个类,它读取特定位置的可用列表,

以下是我的代码,

@H_502_7@import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; public class ExceptionInFileHandling { @SuppressWarnings({ "rawtypes","unchecked" }) public static void GetDirectory(String a_Path,List a_files,List a_folders) throws IOException { try { File l_Directory = new File(a_Path); File[] l_files = l_Directory.listFiles(); for (int c = 0; c < l_files.length; c++) { if (l_files[c].isDirectory()) { a_folders.add(l_files[c].getName()); } else { a_files.add(l_files[c].getName()); } } } catch (Exception ex){ ex.printStackTrace(); } } @SuppressWarnings("rawtypes") public static void main(String args[]) throws IOException { String filesLocation = "asdfasdf/sdfsdf/"; List l_Files = new ArrayList(),l_Folders = new ArrayList(); GetDirectory(filesLocation,l_Files,l_Folders); System.out.println("Files"); System.out.println("---------------------------"); for (Object file : l_Files) { System.out.println(file); } System.out.println("Done"); } }

在这个文件路径可以作为参数传递,应该根据操作系统,

@H_502_7@filePath.replaceAll("\\\\|/","\\" + System.getProperty("file.separator"))

它是否正确?

最佳答案
有更好的方法来使用文件路径……

@H_502_7@// Don't do this filePath.replaceAll("\\\\|/","\\" + System.getProperty("file.separator"))

使用java.nio.file.path

@H_502_7@import java.nio.file.*; @H_502_7@Path path = Paths.get(somePathString); // Here is your system independent path path.toAbsolutePath(); // Or this works too Paths.get(somePathString).toAbsolutePath();

使用File.seperator

@H_502_7@// You can also input a String that has a proper file seperator like so String filePath = "SomeDirectory" + File.separator; // Then call your directory method try{ ExceptionInFileHandling.GetDirectory(filePath,...,...); } catch (Exception e){}

因此,对您的方法进行简单更改现在可以跨平台工作:

@H_502_7@@SuppressWarnings({ "rawtypes",List a_folders) throws IOException { try { // File object is instead constructed // with a URI by using Path.toUri() // Change is done here File l_Directory = new File(Paths.get(a_Path).toUri()); File[] l_files = l_Directory.listFiles(); for (int c = 0; c < l_files.length; c++) { if (l_files[c].isDirectory()) { a_folders.add(l_files[c].getName()); } else { a_files.add(l_files[c].getName()); } } } catch (Exception ex){ ex.printStackTrace(); } }

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