压缩文件为zip

Bertha 。 2022-01-11 02:59 355阅读 0赞

import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.util.zip.ZipEntry;
    import java.util.zip.ZipOutputStream;
    
    /**
     * DateTime: 2016/9/18 21:54
     * 功能：压缩文件为zip
     * 思路：
     */
    public class FileZip {
    
        //测试
        public static void main(String[] args) {
            try {
                zip("G:\\demo","G:\\demo.zip");
            } catch ( Exception e ) {
                e.printStackTrace();
            }
        }
    
        /**
         *
         * @param inputFileName 要压缩的文件夹(整个完整路径)
         * @param zipFileName   压缩后的文件(整个完整路径)
         */
        public static void zip(String inputFileName,String zipFileName) throws Exception {
            zip(zipFileName,new File(inputFileName));
        }
        public static void zip(String zipFileName,File inputFile) throws Exception {
            ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipFileName));
            zip(out,inputFile,"");
            out.flush();
            out.close();
        }
    
        private static void zip(ZipOutputStream out,File f,String base) throws Exception{
            if(f.isDirectory()){
                File[] f1=f.listFiles();
                out.putNextEntry(new ZipEntry(base+"/"));
                base=base.length()==0?"":base+"/";
                for ( int i = 0; i < f1.length; i++ ) {
                    zip(out,f1[i],base+f1[i].getName());
                }
            }else {
                out.putNextEntry(new ZipEntry(base));
                FileInputStream in=new FileInputStream(f);
                int b;
                while ( -1!=(b=in.read()) ){
                    out.write(b);
                }
                in.close();
            }
        }
    
    
    
    }