如何使用lzma压缩创建zip

Question

我知道如何创建zip存档:

import java.io.*;
import java.util.zip.*;
public class ZipCreateExample{
    public static void main(String[] args)  throws Exception  
        // input file 
        FileInputStream in = new FileInputStream("F:/sometxt.txt");

        // out put file 
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream("F:/tmp.zip"));

        // name the file inside the zip  file 
        out.putNextEntry(new ZipEntry("zippedjava.txt")); 

        // buffer size
        byte[] b = new byte[1024];
        int count;

        while ((count = in.read(b)) > 0) {
            System.out.println();
            out.write(b, 0, count);
        }
        out.close();
        in.close();
    }
}

但我不知道如何使用lzma压缩.

我找到了这个项目:https://github.com/jponge/lzma-java,它创建压缩文件,但我不知道如何将它与我现有的解决方案结合起来.

Answer 1

你提到的网站上有一个例子：

适应您的需求：

final File sourceFile = new File("F:/sometxt.txt");
final File compressed = File.createTempFile("lzma-java", "compressed");

final LzmaOutputStream compressedOut = new LzmaOutputStream.Builder(
        new BufferedOutputStream(new FileOutputStream(compressed)))
        .useMaximalDictionarySize()
        .useEndMarkerMode(true)
        .useBT4MatchFinder()
        .build();

final InputStream sourceIn = new BufferedInputStream(new FileInputStream(sourceFile));

IOUtils.copy(sourceIn, compressedOut);
sourceIn.close();
compressedOut.close();

（我不知道它是否有效，这只是库和您的代码片段的用法）