java遍历文件夹并复制文件到指定目录

最新推荐文章于 2022-11-25 15:52:57 发布

JAVA2010CZP

最新推荐文章于 2022-11-25 15:52:57 发布

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分类专栏： java 文章标签： java exception file string byte class

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该Java程序用于从源文件夹遍历并复制特定类型的文件（如.java, .xml等）到目标文件夹。用户输入源和目标路径，程序会创建目标文件夹（如果不存在），并显示复制进度。" 102630733,8300714,小程序云开发实践：云函数创建与测试,"['云开发', '小程序', '云函数', '测试工具', 'API']

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package com.czp;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Scanner;


public class CopyFolder {

	// 允许复制的文件类型
	public static String[] filterFile = { ".java", ".xml", ".xdl",
			".properties", ".sql", ".jupiter", ".wsdl" };
	private long total = 0l;

	public static void main(String[] args) throws Exception {

		Scanner scanner = new Scanner(System.in);
		String answer = null;
		do {
			System.out.println("Enter src folder:");
			String srcStr = scanner.next();
			String destStr;
			System.out.println("Now enter dest folder:");
			destStr = scanner.next();
			File src = new File(srcStr);
			File des = new File(destStr);
			new CopyFolder().copyFolder(src, des, filterFile);
			System.out.println("Continue ?y or n");
			answer = scanner.next();
		} while (answer.equalsIgnoreCase("Y"));
		scanner.close();
	}

	/** * * @param folder * @param filterFile * @throws Exception */
	public void copyFolder(File srcFolder, File destFolder, String[] filterFile)
			throws Exception {
		File[] files = srcFolder.listFiles();
		for (File file : files) {
			if (file.isFile()) {
				String pathname = destFolder + File.separator + file.getName();
				for (String suff : filterFile) {
					if (pathname.endsWith(suff)) {
						File dest = new File(pathname);
						File destPar = dest.getParentFile();
						destPar.mkdirs();
						if (!dest.exists()) {
							dest.createNewFile();
						}
						copyFile(file, dest);
					}
				}
			} else {
				copyFolder(file, destFolder, filterFile);
			}
		}
	}

	/***
	 * * copy file * * @param src * @param dest * @param status * @throws
	 * IOException
	 */
	private void copyFile(File src, File dest) throws Exception {
		FileInputStream input = null;
		FileOutputStream outstrem = null;
		try {
			 input = new FileInputStream(src);
			 outstrem = new FileOutputStream(dest);
			 outstrem.getChannel().transferFrom(input.getChannel(), 0,input.available());
			total++;
			String temp =String.format("\ncopy:%s size:%s to: %s complate: %s", src,src.length(),dest,total); 
			System.out.print(temp);
		} catch (Exception e) {
			throw e;
		} finally {
			outstrem.flush();
			outstrem.close();
			input.close();
		}
	}
}