如何在整个硬盘驱动器中搜索特定文件（Java Eclipse）？

Question

    public static void fileSearcher() throws IOException {
    File dire = new File ("C:/");
    String[] allFile = dire.list();
    for (int i = 0;i<10;i++) {            
        String FilIn = allFile[i];                   // here is where I need to scan entire pc for file
        if(FilIn.equals("eclipse.exe")){
            System.out.println("Found Eclipse!");
            break;
        }
        else {
            System.out.println("Eclipse not found on local drive.");
        }

是否有一种简单的方法可以扫描整个 HHD/SSD 以查找特定文件？

Answer 1

这将为您完成这项工作，并且在有多个驱动器或分区时也可以使用。它还将搜索具有相同名称的其他文件。

import java.io.File;
import javax.swing.filechooser.FileSystemView;

public class HardDiskSearcher {

    private static boolean fileFound = false;

    private static String searchTerm = "eclipse.exe";

    public static void main(String[] args) {

        fileFound = false;

        File[] systemRoots = File.listRoots();
        FileSystemView fsv = FileSystemView.getFileSystemView();

        for (File root: systemRoots) {
            if (fsv.getSystemTypeDescription(root).equals("Local Disk")) {
                File[] filesFromRoot = root.listFiles();
                recursiveSearch(searchTerm, filesFromRoot);
            }
        }

        System.out.println("File you searched for was found?  : " + fileFound);

    }

    private static void recursiveSearch(String searchTerm, File... files) {

        for (File file: files) {

            if (file.isDirectory()) {
                File[] filesInFolder = file.listFiles();

                if (filesInFolder != null) {
                    for (File f : filesInFolder) {
                        if (f.isFile()) {
                            if (isTheSearchedFile(f, searchTerm)) {
                                fileFound = true;
                            }
                        }   
                    }

                    for (File f : filesInFolder) {
                        if (f.isDirectory()) {
                            recursiveSearch(searchTerm, f);
                        }
                    }
                }
            }
            else if (isTheSearchedFile(file, searchTerm)) {
                fileFound = true;
            }
        }
    }

    private static boolean isTheSearchedFile(File file, String searchTerm) {
        if (file.isFile() && (searchTerm.equals(file.getName())) ) {
            System.out.println("The file you searched for has been found! " +
                    "It was found at: " + file.getAbsolutePath());
            return true;
        }
        return false;
    }

}

我不是 100% 确定为什么这里需要 if 语句 (filesInFolder != null)，但我怀疑 Windows 在尝试从特定系统文件夹或其他内容中列出文件时返回 null。