如何在Java中实现Zip文件的自动化处理

在Java中实现Zip文件的自动化处理，可以使用Java标准库中的java.util.zip包。以下是一个简单的示例，展示了如何创建一个ZIP文件，将多个文件添加到ZIP文件中，以及从ZIP文件中提取文件。

创建ZIP文件

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

public class ZipFileExample {
    public static void main(String[] args) {
        // 要压缩的文件列表
        File[] filesToZip = new File[]{
            new File("file1.txt"),
            new File("file2.txt"),
            new File("file3.txt")
        };

        // 压缩文件的名称
        String zipFileName = "example.zip";

        try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFileName))) {
            for (File file : filesToZip) {
                addFileToZip(file, zos);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void addFileToZip(File file, ZipOutputStream zos) throws IOException {
        try (FileInputStream fis = new FileInputStream(file)) {
            ZipEntry zipEntry = new ZipEntry(file.getName());
            zos.putNextEntry(zipEntry);

            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = fis.read(buffer)) != -1) {
                zos.write(buffer, 0, bytesRead);
            }

            zos.closeEntry();
        }
    }
}

从ZIP文件中提取文件

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

public class UnzipFileExample {
    public static void main(String[] args) {
        // ZIP文件名称
        String zipFileName = "example.zip";

        // 提取文件的目录
        File destDirectory = new File("extracted");
        destDirectory.mkdirs();

        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFileName))) {
            ZipEntry zipEntry;
            while ((zipEntry = zis.getNextEntry()) != null) {
                File newFile = new File(destDirectory, zipEntry.getName());

                if (!zipEntry.isDirectory()) {
                    extractFile(zis, newFile);
                } else {
                    new File(newFile.getParent()).mkdirs();
                }
            }
            zis.closeEntry();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void extractFile(ZipInputStream zis, File newFile) throws IOException {
        try (FileOutputStream fos = new FileOutputStream(newFile)) {
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = zis.read(buffer)) != -1) {
                fos.write(buffer, 0, bytesRead);
            }
        }
    }
}

自动化处理

要实现ZIP文件的自动化处理，可以将上述代码封装到一个方法中，并通过命令行参数或配置文件来控制文件的压缩和提取。例如：

public class ZipFileAutomation {
    public static void main(String[] args) {
        if (args.length < 2) {
            System.out.println("Usage: ZipFileAutomation <command> [options]");
            System.exit(1);
        }

        String command = args[0];

        switch (command) {
            case "zip":
                zipFiles(args.length - 1, args, "example.zip");
                break;
            case "unzip":
                unzipFiles(args.length - 1, args, "example.zip", "extracted");
                break;
            default:
                System.out.println("Unknown command: " + command);
                System.exit(1);
        }
    }

    private static void zipFiles(int fileCount, String[] files, String zipFileName) {
        File[] fileArray = new File[fileCount];
        for (int i = 0; i < fileCount; i++) {
            fileArray[i] = new File(files[i]);
        }

        try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFileName))) {
            for (File file : fileArray) {
                addFileToZip(file, zos);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void unzipFiles(int fileCount, String[] files, String zipFileName, String destDirectory) {
        File destDir = new File(destDirectory);
        destDir.mkdirs();

        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFileName))) {
            ZipEntry zipEntry;
            while ((zipEntry = zis.getNextEntry()) != null) {
                File newFile = new File(destDir, zipEntry.getName());

                if (!zipEntry.isDirectory()) {
                    extractFile(zis, newFile);
                } else {
                    new File(newFile.getParent()).mkdirs();
                }
            }
            zis.closeEntry();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void addFileToZip(File file, ZipOutputStream zos) throws IOException {
        try (FileInputStream fis = new FileInputStream(file)) {
            ZipEntry zipEntry = new ZipEntry(file.getName());
            zos.putNextEntry(zipEntry);

            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = fis.read(buffer)) != -1) {
                zos.write(buffer, 0, bytesRead);
            }

            zos.closeEntry();
        }
    }

    private static void extractFile(ZipInputStream zis, File newFile) throws IOException {
        try (FileOutputStream fos = new FileOutputStream(newFile)) {
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = zis.read(buffer)) != -1) {
                fos.write(buffer, 0, bytesRead);
            }
        }
    }
}

通过这种方式，你可以通过命令行参数来控制文件的压缩和提取：

java ZipFileAutomation zip file1.txt file2.txt file3.txt
java ZipFileAutomation unzip example.zip extracted