如何保护Jar文件不被反编译？ [英] How to protect a Jar file from being decompiled?

问题描述

我正在使用java开发应用程序，但我不打算发布代码。问题是，我测试了其中一个jar反编译器，它能够几乎完美地从我的jar文件中获取代码！
我的问题是如何在不从中提取代码的情况下分发我的jar文件？

I'm developing an application using java but I'm not going to release the code. The problem is, I tested one of these jar de-compilers and it was able to get the code from my jar file almost perfectly! My question is how can I distribute my jar file without my code being extracted from it?

推荐答案

Java保留编译期间的大多数元数据（允许动态加载和反射），它是一个直接反编译（不仅是反汇编）编译的类文件。这就是为什么恢复的代码与原始代码非常相似。

As Java preserves most of the "metadata" during compilation (which allows dynamic loading and reflection), it is a straight forward to decompile (not only disassemble) the compiled class files. That's why the recovered code is very similar to the original.

虽然不完美，但你可能唯一的选择是使用混淆器，例如 ProGuard 。

While not perfect, your probably only option is to use an obfuscator, such as ProGuard.

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