java将文件夹压缩成指定目录下zip

文件

以下是Java将文件夹压缩成指定目录下zip文件的示例代码：

import java.io.*;
import java.util.zip.*;

public class ZipFolder {
    public static void main(String[] args) {
        String sourceFolder = "C:/sourceFolder";
        String outputZipFile = "C:/output.zip";
        zipFolder(sourceFolder, outputZipFile);
    }

    public static void zipFolder(String sourceFolder, String outputZipFile) {
        try {
            FileOutputStream fos = new FileOutputStream(outputZipFile);
            ZipOutputStream zos = new ZipOutputStream(fos);
            zipSubFolder(zos, sourceFolder, sourceFolder.length());
            zos.close();
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void zipSubFolder(ZipOutputStream zos, String folderPath, int basePathLength) throws IOException {
        File folder = new File(folderPath);
        File[] fileList = folder.listFiles();
        byte[] buffer = new byte[4096];
        int bytesRead;
        for (File file : fileList) {
            if (file.isDirectory()) {
                zipSubFolder(zos, file.getAbsolutePath(), basePathLength);
            } else {
                FileInputStream fis = new FileInputStream(file);
                String entryPath = file.getAbsolutePath().substring(basePathLength + 1);
                ZipEntry ze = new ZipEntry(entryPath);
                zos.putNextEntry(ze);
                while ((bytesRead = fis.read(buffer)) != -1) {
                    zos.write(buffer, 0, bytesRead);
                }
                fis.close();
            }
        }
    }
}

在上面的示例代码中，将文件夹压缩成指定目录下的zip文件的过程主要由`zipFolder()`方法和`zipSubFolder()`方法实现。`zipFolder()`方法用于创建ZipOutputStream对象并调用`zipSubFolder()`方法对指定文件夹进行压缩。`zipSubFolder()`方法递归遍历指定文件夹下的所有文件和子文件夹，将文件压缩到zip文件中。