java ZipUtils压缩文件

你可以使用 Java 中的 ZipOutputStream 类来压缩文件。

以下是一个简单的示例代码，可以将一个文件夹压缩成一个 zip 文件：

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

public class ZipUtils {
    public static void main(String[] args) throws Exception {
        String sourceFolder = "path/to/source/folder";
        String zipFile = "path/to/zip/file.zip";
        zipFolder(sourceFolder, zipFile);
    }

    public static void zipFolder(String sourceFolder, String zipFile) throws Exception {
        FileOutputStream fos = new FileOutputStream(zipFile);
        ZipOutputStream zos = new ZipOutputStream(fos);

        addFolderToZip("", sourceFolder, zos);

        zos.close();
        fos.close();
    }

    private static void addFileToZip(String path, String srcFile, ZipOutputStream zip) throws Exception {
        File folder = new File(srcFile);
        if (folder.isDirectory()) {
            addFolderToZip(path, srcFile, zip);
        } else {
            byte[] buf = new byte[1024];
            int len;
            FileInputStream in = new FileInputStream(srcFile);
            zip.putNextEntry(new ZipEntry(path + "/" + folder.getName()));
            while ((len = in.read(buf)) > 0) {
                zip.write(buf, 0, len);
            }
        }
    }

    private static void addFolderToZip(String path, String srcFolder, ZipOutputStream zip) throws Exception {
        File folder = new File(srcFolder);
        for (String fileName : folder.list()) {
            if (path.equals("")) {
                addFileToZip(folder.getName(), srcFolder + "/" + fileName, zip);
            } else {
                addFileToZip(path + "/" + folder.getName(), srcFolder + "/" + fileName, zip);
            }
        }
    }
}

这个示例代码将会压缩 `sourceFolder` 文件夹并将其保存为 `zipFile.zip`。你只需要修改这两个变量的值来适应你的需求。