Selenium下载文件后重命名：实用教程

import io.github.bonigarcia.wdm.WebDriverManager;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

public class SeleniumDownloadConfig {

    public static String downloadFilepath; // 定义为静态变量，方便后续方法访问

    public static WebDriver setupDriverWithDownloadPath() {
        WebDriverManager.chromedriver().setup();
        ChromeOptions options = new ChromeOptions();

        // 设置下载文件路径为当前项目目录下的"downloads"文件夹
        downloadFilepath = System.getProperty("user.dir") + File.separator + "downloads" + File.separator;
        System.out.println("Chrome Download path set to: " + downloadFilepath);

        // 确保下载目录存在，如果不存在则创建
        File downloadtoFolder = new File(downloadFilepath);
        if (!downloadtoFolder.exists()) {
            downloadtoFolder.mkdir();
        }

        Map<String, Object> prefs = new HashMap<>();
        prefs.put("credentials_enable_service", false);
        prefs.put("profile.password_manager_enabled", false);
        prefs.put("profile.default_content_settings.popups", 0);
        // 禁止浏览器弹出下载保存对话框，文件将自动保存到指定目录
        prefs.put("download.prompt_for_download", false);
        // 设置默认下载目录
        prefs.put("download.default_directory", downloadFilepath);
        prefs.put("profile.default_content_setting_values.notifications", 1);
        prefs.put("profile.default_content_settings.cookies", 1);

        options.setExperimentalOption("prefs", prefs);

        return new ChromeDriver(options);
    }

    public static void main(String[] args) {
        WebDriver driver = setupDriverWithDownloadPath();
        // 示例：导航到需要下载文件的页面
        // driver.get("https://example.com/download-page");
        // 执行下载操作...
        // driver.quit();
    }
}

import java.io.File;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.Optional;

public class FileRenamer {

    /**
     * 重命名下载目录中的最新文件。
     * 注意：此方法假设目录中只有一个或最新下载的文件是目标文件。
     *
     * @param newFileName 目标文件名（包含扩展名，如 "my_receipt.pdf"）
     * @param folderPath 下载目录的路径
     * @return true 如果成功重命名，否则 false
     */
    public static boolean renameLatestDownloadedFile(String newFileName, String folderPath) {
        File folder = new File(folderPath);
        if (!folder.isDirectory()) {
            System.err.println("Error: Provided path is not a directory: " + folderPath);
            return false;
        }

        File[] files = folder.listFiles();
        if (files == null || files.length == 0) {
            System.out.println("No files found in download directory: " + folderPath);
            return false;
        }

        // 找到最新修改的文件
        Optional<File> latestFile = Arrays.stream(files)
                .filter(File::isFile) // 确保是文件而不是子目录
                .max(Comparator.comparingLong(File::lastModified));

        if (latestFile.isPresent()) {
            File originalFile = latestFile.get();
            String newFilePath = folderPath + newFileName;
            File newFile = new File(newFilePath);

            System.out.println(String.format("Attempting to rename '%s' to '%s'", originalFile.getName(), newFileName));

            boolean isRenamed = originalFile.renameTo(newFile);
            if (isRenamed) {
                System.out.println(String.format("Successfully renamed file from '%s' to '%s'", originalFile.getName(), newFileName));
            } else {
                System.err.println(String.format("Failed to rename file '%s' to '%s'. It might be in use or permissions are insufficient.", originalFile.getName(), newFileName));
            }
            return isRenamed;
        } else {
            System.out.println("No files found to rename in: " + folderPath);
            return false;
        }
    }

    // 原始问答中提供的重命名方法，此处保留作为参考，但更推荐上面的`renameLatestDownloadedFile`
    // 因为它考虑了目录中可能存在的多个文件
    private static void fileRename(String newFileName, String folder) {
        File file = new File(folder);
        System.out.println("Reading this " + file.toString());
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            List<File> filelist = Arrays.asList(files);
            filelist.forEach(f -> {
                System.out.println(f.getAbsolutePath());
                String newName = folder + newFileName;
                System.out.println(newName);
                boolean isRenamed = f.renameTo(new File(newName));
                if (isRenamed)
                    System.out.println(String.format("Renamed this file %s to  %s", f.getName(), newName));
                else
                    System.out.println(String.format("%s file is not renamed to %s", f.getName(), newName));

            });

        }
    }

    public static void main(String[] args) {
        // 示例使用：
        // 假设已经通过Selenium下载了一个文件到 SeleniumDownloadConfig.downloadFilepath
        // 然后调用重命名方法
        // String newDesiredFileName = "my_receipt_20231027.pdf";
        // boolean success = renameLatestDownloadedFile(newDesiredFileName, SeleniumDownloadConfig.downloadFilepath);
        // System.out.println("Renaming successful: " + success);
    }
}