比较文件名

我想比较位于两个不同文件夹中的文件。 我希望仅比较这两个不同文件夹中具有相同名称的文件。

我想要做的是比较两个不同版本的软件，并找出已更改的文件数量。

Answer 1

这将帮助您获取两个路径的文件：

 import java.io.File; import java.util.*; public class ListFiles { public static void main(String[] args) { // First directory path here. String path1 = "."; // Second directory path here. String path2 = "."; // File class is very important. // If you did a simple Google search // Then you would have seen this class mentioned. File folder1 = new File(path1); File folder2 = new File(path2); // It gets the list of files for you. File[] listOfFiles1 = folder1.listFiles(); File[] listOfFiles2 = folder2.listFiles(); // We'll need these to store the file names as Strings. ArrayList fileNames1 = new ArrayList(); ArrayList fileNames2 = new ArrayList(); // Get file names from first directory. for (int i = 0; i < listOfFiles1.length; i++) { if (listOfFiles1[i].isFile()) { fileNames1.add(listOfFiles1[i].getName()); } } // Get file names from second directory. for (int i = 0; i < listOfFiles2.length; i++) { if (listOfFiles2[i].isFile()) { fileNames2.add(listOfFiles2[i].getName()); } } // Now compare // Loop through the two array lists and add your own logic. } } 

您需要添加自己的逻辑进行比较。 资源

Answer 2

我有这个代码，它将目录中的所有文件与特定文件进行比较，以检查目录中是否存在该文件，可以根据您的需要稍微调整一下。它使用commons-io.jar

 import java.io.File; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; import org.apache.commons.io.FileUtils; public class CompareFile { String directory; File file; public CompareFile(String directory, File file) { this.directory = directory; this.file = file; } public boolean doesFileExist() { boolean indicatorFileExist = true; List files = null; try { files = getFiles(); files = files.stream().filter(fileMatch -> { try { if(fileMatch.isFile()){ return FileUtils.contentEquals(fileMatch, file); }else{ return false; } } catch (Exception excep) { excep.printStackTrace(); return false; } }).collect(Collectors.toList()); if(files.isEmpty()){ indicatorFileExist = false; } } catch (Exception excep) { excep.printStackTrace(); } finally { if (files != null) { files = null; } } return indicatorFileExist; } private List getFiles() { List fileList = null; try { if(directory!=null && directory.trim().length()>0 && file!=null){ File dir = new File(directory); if(dir.isDirectory() && dir.exists() && dir.canRead()){ fileList = Arrays.asList(dir.listFiles()); } } } catch (Exception excep) { excep.printStackTrace(); } return fileList; } }