Apache Commons Codec Base64是否可以替代sun.misc.BASE64? [英] Is Apache Commons Codec Base64 a drop-in replacement for sun.misc.BASE64?

问题描述

背景

Background

这是我最初的问题的后续问题从sun.misc.BASE64迁移到Java 8 java.util.Base64 ，因为有人建议，因为Apache Commons Codec Base64 API是用于替换使用sun.misc Base64 API.

This is a follow-up question to my original question Migrating from sun.misc.BASE64 to Java 8 java.util.Base64 because someone suggested that the Apache Commons Codec Base64 API is a drop-in replacement to migrate code which uses the sun.misc Base64 APIs.

问题

Question

对于不受支持的内部Java API sun.misc.BASE64Encoder和sun.misc.BASE64Decoder，org.apache.commons.codec.binary.Base64 是直接替代品 吗?

Is the org.apache.commons.codec.binary.Base64 a drop-in replacement for the unsupported, internal Java API sun.misc.BASE64Encoder and sun.misc.BASE64Decoder?

直接替换 意味着两种实现(Apache Commons Codec和sun.misc)的编码/解码结果均相等，因此可以互换使用

Drop-in replacement means that the encoding/decoding results from both implementations (Apache Commons Codec and sun.misc) are equal, thus the they can be used interchangebly.

推荐答案

Stuart标记了完美的反例答案 原始问题明确表明，对于至少一种边缘情况，Java 8 java.util.Base64 MIME编码器提供的结果与不受支持的结果不同，内部Java API sun.misc.BASE64Encoder.

Stuart Marks perfect counter-example answer to my original question shows definitely that for at least one edge case the Java 8 java.util.Base64 MIME Encoder delivers a different result than the unsupported, internal Java API sun.misc.BASE64Encoder.

因此，让我们使用 Apache Commons Codec库再次检查这种情况.

.

边缘测试

Edge-case test

对于以下测试，我使用OpenJDK 7和Apache Commons Codec库1.14的sun.misc.BASE64Encoder实现.

For the following test I use the sun.misc.BASE64Encoder implementation of OpenJDK 7 and Apache Commons Codec library 1.14.

public class StuartMarksBase64EncodingEdgeCaseTestForApacheCommonsCodec {

    public static void main(String[] args) {
        byte[] bytes = new byte[57];
        String enc1 = new sun_misc_jdk7.BASE64Encoder().encode(bytes);
        String enc2 = new String(org.apache.commons.codec.binary.Base64.encodeBase64(bytes));

        System.out.println("enc1 = <" + enc1 + ">");
        System.out.println("enc2 = <" + enc2 + ">");
        System.out.println(enc1.equals(enc2));
    }

}

这将导致输出

enc1 = <AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
>
enc2 = <AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA>
false

结论

Conclusion

鉴于测试输出，我得出结论，Apache Commons Codec Base64 API是 不是直接替代品 ，以迁移使用sun.misc Base64 API的代码.

Given the test output I conclude that the Apache Commons Codec Base64 API is not a drop-in replacement to migrate code which uses the sun.misc Base64 APIs.

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