一个文件工具类

package com.dsfa.bi.dp.web.fun.tools;

import com.dsfa.platform.starter.session.kit.DateKit;
import lombok.extern.slf4j.Slf4j;

import java.io.*;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * @author Hunag Zicai
 * @date 2022/8/10 18:00
 * @desc
 **/
@Slf4j
public class DPFileTools {

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

        //DPFileTools.stringContentToFile("code> print('hello world!')", "test.py", "F:\\temp\\df\\dgdfg\\dgfdsfg", false);
        //String folder = DPFileTools.addFolder("F:\\temp", "python");
        //DPFileTools.stringContentToFile("sidfhkasfhkasf","xxx.py",folder,false);
        //DPFileTools.deleteFolder("F:\\temp");
        //DPFileTools.unzip("F:\\temp\\python.zip", "F:\\temp\\generate");


    }


    /**
     * 将绝对路径下的压缩包文件解压到指定路径,如果之前存在文件夹，则覆盖
     *
     * @param filePath 文件绝对路径
     * @param toPath   指定路径
     */
    public static void unzip(String filePath, String toPath) throws IOException {
        File file = new File(filePath);
        if (!file.exists() || file.isDirectory()) {
            throw new RuntimeException(filePath + "文件不存在");
        }
        ZipFile zip = new ZipFile(file, Charset.forName("GBK"));
        File pathFile = new File(toPath );
        if (!pathFile.exists()) {
            pathFile.mkdirs();
        }
        for (Enumeration<? extends ZipEntry> entries = zip.entries(); entries.hasMoreElements(); ) {
            ZipEntry entry = (ZipEntry) entries.nextElement();
            String zipEntryName = entry.getName();
            InputStream in = zip.getInputStream(entry);
            String outPath = (toPath  + File.separator + zipEntryName).replaceAll("\\*", File.separator);
            // 判断解压目标路径是否存在,不存在则创建文件路径
            File toPathFile = new File(outPath.substring(0, outPath.lastIndexOf('/')));
            if (!toPathFile.exists()) {
                toPathFile.mkdirs();
            }
            // 判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
            if (new File(outPath).isDirectory()) {
                continue;
            }
            FileOutputStream out = new FileOutputStream(outPath);
            byte[] bytes = new byte[1024];
            int len;
            while ((len = in.read(bytes)) > 0) {
                out.write(bytes, 0, len);
            }
            in.close();
            out.close();
        }
        log.debug("\n解压完成\n");
    }


    /**
     * 删除指定路径的文件夹及其子文件
     *
     * @param path 指定路径
     */
    public static void deleteFolder(String path) {
        File file = new File(path);
        if (!file.exists()) {
            return;
        } else if (!file.isDirectory()) {
            //非目录即文件，直接删除
            file.delete();
            return;
        }

        //递归删除子文件
        String[] tempList = file.list();
        File tempFile = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                tempFile = new File(path + tempList[i]);
            } else {
                tempFile = new File(path + File.separator + tempList[i]);
            }
            if (tempFile.isFile()) {
                tempFile.delete();
            }
            if (tempFile.isDirectory()) {
                deleteFolder(path + File.separator + tempList[i]);//再删除空文件夹
            }
        }
        file.delete();
    }

    /**
     * 在指定路径生成一个文件夹
     *
     * @param path       指定路径
     * @param folderName 要生成的文件夹名称
     */
    public static String addFolder(String path, String folderName) {
        String folderPath = path + File.separator + folderName;
        File file = new File(folderPath);
        if (file.exists()) {
            log.debug("该路径已存在：{}", folderPath);
        } else {
            file.mkdirs();
        }
        return folderPath;
    }

    /**
     * 将string内容保存成文件到指定路径
     *
     * @param content  字符内容
     * @param fileName 生成的文件名
     * @param path     保存的路径
     * @param append   如果路径存在同名文件内容是否追加到后面
     */
    public static void stringContentToFile(String content, String fileName, String path, boolean append) throws IOException {
        File file = new File(path);
        if (!file.exists()) {
            file.mkdirs();
        }

        StringBuilder code = new StringBuilder();
        code.append("######  Path:" + path + "\n");
        code.append("######  Date:" + DateKit.getNowTime() + "\n\n");
        code.append(content);
        code.append("\n\n###############################################################################\n");

        FileWriter fileWriter = null;
        if (append) {
            fileWriter = new FileWriter(path + File.separator + fileName, true);
        } else {
            fileWriter = new FileWriter(path + File.separator + fileName);
        }
        fileWriter.write(code.toString());
        fileWriter.flush();
        fileWriter.close();
    }
}