Java基础--压缩和解压缩gz包

gz是Linux和OSX中常见的压缩文件格式，下面是用java压缩和解压缩gz包的例子

public class GZIPcompress {

    public static void FileCompress(String file, String outgz) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader(file));
        BufferedOutputStream bs = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream(outgz)));

        int c;
        while ((c = br.read()) != -1) {
            bs.write(c);
        }
        br.close();
        bs.close();
    }

    public static String FileUnCompress(String filegz) throws IOException {
        BufferedReader bf = new BufferedReader(new InputStreamReader(new GZIPInputStream(new FileInputStream(filegz))));
        String s;
        StringBuffer sb = new StringBuffer();
        while ((s = bf.readLine()) != null) {
            sb.append(s);
        }
        bf.close();
        return sb.toString();
    }

    public static void main(String[] args) throws IOException {
        String fileOut = "test.gz";
        String in = "test.txt";
        
        FileCompress(in, fileOut);
        String out = FileUnCompress(fileOut);
        
        System.out.println(out);
    }

}