压缩文件工具类

Posted 2020-12-05 3b2414

/**
* 压缩文件工具类
*/
public class ZipUtils {
    
    public static void doCompress(String srcFile, String zipFile) throws Exception {
        doCompress(new File(srcFile), new File(zipFile));
    }
    
    /**
     * 文件压缩
     * @param srcFile  目录或者单个文件
     * @param destFile 压缩后的ZIP文件
     */
    public static void doCompress(File srcFile, File destFile) throws Exception {
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(destFile));
        if(srcFile.isDirectory()){
            File[] files = srcFile.listFiles();
            for(File file : files){
                doCompress(file, out);
            }
        }else {
            doCompress(srcFile, out);
        }
    }
    
    public static void doCompress(String pathname, ZipOutputStream out) throws IOException{
        doCompress(new File(pathname), out);
    }
    
    public static void doCompress(File file, ZipOutputStream out) throws IOException{
        if(file.exists()){
            byte[] buffer = new byte[1024];
            FileInputStream fis = new FileInputStream(file);
            out.putNextEntry(new ZipEntry(file.getName()));
            int len = 0 ;
            // 读取文件的内容,打包到zip文件    
            while ((len = fis.read(buffer)) > 0) {
                out.write(buffer, 0, len);
            }
            out.flush();
            out.closeEntry();
            fis.close();
        }
    }
}