java 解压指定目录

以下是使用Java API实现解压指定目录的示例代码：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class UnzipDirectory {
    public static void main(String[] args) {
        String zipFilePath = "path/to/your/zip/file.zip";
        String destDirectory = "path/to/your/destination/directory";

        try {
            unzip(zipFilePath, destDirectory);
            System.out.println("Unzip completed successfully.");
        } catch (IOException e) {
            System.out.println("Error occurred while unzipping the directory: " + e.getMessage());
        }
    }

    public static void unzip(String zipFilePath, String destDirectory) throws IOException {
        File destDir = new File(destDirectory);
        if (!destDir.exists()) {
            destDir.mkdir();
        }

        ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
        ZipEntry entry = zipIn.getNextEntry();

        while (entry != null) {
            String filePath = destDirectory + File.separator + entry.getName();
            if (!entry.isDirectory()) {
                extractFile(zipIn, filePath);
            } else {
                File dir = new File(filePath);
                dir.mkdir();
            }
            zipIn.closeEntry();
            entry = zipIn.getNextEntry();
        }
        zipIn.close();
    }

    private static void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
        byte[] buffer = new byte[1024];
        FileOutputStream fos = new FileOutputStream(filePath);
        int len;
        while ((len = zipIn.read(buffer)) > 0) {
            fos.write(buffer, 0, len);
        }
        fos.close();
    }
}

请注意，你需要将`path/to/your/zip/file.zip`替换为你要解压的ZIP文件的路径，将`path/to/your/destination/directory`替换为你要将解压文件放置的目标目录的路径。