如何将字符串转换为GZIP Base64字符串?

如何将字符串转换为GZIP Base64字符串?

问题描述:

我一直试图找出使用 GZIPOutputStream 等等但是没有成功理解它们。我想做的就是将一串字符 - 一串字符转换为GZIP Base64格式。我该怎么做?

I've been trying to figure out using GZIPOutputStream's and the like but have had no success with understanding them. All I want to do is convert a string of characters - "A string of characters" into a GZIP Base64 format. How can I do this?

编辑:
通过GZIP Base64格式,我的意思是首先使用GZIP压缩字符串,然后转换为Base64

By GZIP Base64 format, I mean the string is first compressed using GZIP, then converted into Base64

使用 Apache Commons Codec Base64OutputStream

这是一个示例类:

import java.util.zip.GZIPOutputStream;
import org.apache.commons.codec.binary.Base64OutputStream;

public class Test {
    public static void main(String[] args) {
        String text = "a string of characters";
        try {
            Base64OutputStream b64os = new Base64OutputStream(System.out);
            GZIPOutputStream gzip = new GZIPOutputStream(b64os);
            gzip.write(text.getBytes("UTF-8"));
            gzip.close();
            b64os.close();
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
}

哪些输出:

H4sIAAAAAAAAAEtUKC4pysxLV8hPU0jOSCxKTC5JLSoGAOP+cfkWAAAA

在Linux下,您可以确认这适用于:

Under Linux, you can confirm this works with:

echo 'H4sIAAAAAAAAAEtUKC4pysxLV8hPU0jOSCxKTC5JLSoGAOP+cfkWAAAA' | base64 -d | gunzip

(请注意,在OSX上,你应该使用 base64 -D 而不是上面命令中的 base64 -d

(Please note that on OSX, you should use base64 -D instead of base64 -d in the above command)

哪些输出:

a string of characters