Java GZIPOutputStream用法及代码示例

// Java Program to Illustrate GZIPOutputStream class
// Importing required classes
import java.io.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
// Main class
class GFG {
    // Main driver method
    public static void main(String[] args) throws Exception
    {
        // Existing file path
        String file = "D:/Myfolder/New.txt";
       
        // Path where we want the compression of the file
        String gzipFile = "D:/Myfolder/compress.gz";
        // Reading the text file
        FileInputStream fis = new FileInputStream(file);
       
        // Creating the compressed file
        FileOutputStream fos
            = new FileOutputStream(gzipFile);
       
        // Object of Fileoutstream passed
        GZIPOutputStream gzipOS = new GZIPOutputStream(fos);
        byte[] buffer = new byte[1024];
        int len;
        // Writing the data to file until -1 reached(End of
        // file)
        while ((len = fis.read(buffer)) != -1) {
            gzipOS.write(buffer, 0, len);
        }
        // Closing the resources
        // using standard close() method
        gzipOS.close();
        fos.close();
        fis.close();
        // Display message on the console in order to
        // illustrate successful execution of the program
        System.out.println("File successfully compressed");
    }
}