如何使用ProGuard？ [英] How do I use ProGuard?

问题描述

我在尝试学习如何使用 ProGuard ，它并没有我想象的那么容易。起初，我发现了一个简单的Java代码来试试，一个简单的两类Swing计算器< a>。

I was trying to learn how to use ProGuard, and it is no way as easy as I thought. At first I found a simple Java code to try it, a simple two class Swing calculator.

该代码可以通过跟随该链接找到，但我发现它太详细，在这里张贴它。无论如何，它是一个普通的应用程序，入口点在 Calc.main（），没有包。

The code can be found by following that link, but I found it too verbose to post the it here. Anyway, it is a plain application with entry point on Calc.main(), there are no packages.

然后我编译这两个源与：

Then I compiled both sources with:

$ javac *.java

并创建了 .jar 文件（因为看起来ProGuard只能使用jars）：

and created the .jar file (because it seems ProGuard only work with jars):

$ jar cvef Calc calc.jar *.class
added manifest
adding: Calc.class(in = 3869) (out= 2126)(deflated 45%)
adding: Calc$ClearListener.class(in = 468) (out= 327)(deflated 30%)
adding: CalcLogic.class(in = 1004) (out= 515)(deflated 48%)
adding: Calc$NumListener.class(in = 1005) (out= 598)(deflated 40%)
adding: Calc$OpListener.class(in = 1788) (out= 1005)(deflated 43%)

写了名为 obfuscate.pro ：

-injars       calc.jar
-outjars      calc_obf.jar
-libraryjars  <java.home>/lib/rt.jar

-keep public class Calc extends javax.swing.JFrame {
public static void main(java.lang.String[]);
}

最后运行ProGuard：

And finally run ProGuard:

$ ~/progs/proguard/proguard4.8/bin/proguard.sh @obfuscate.pro
ProGuard, version 4.8
Reading program jar [/home/lucas/tmp/calc.jar]
Reading library jar [/usr/lib/jvm/java-7-openjdk-i386/jre/lib/rt.jar]
Error: The output jar is empty. Did you specify the proper '-keep' options?

好吧，显然没有用。我厌倦了使用ProGruard参数，特别是使用 -keep 选项，没有成功。所有我在与我的问题相关的文档中找到的无法帮助我。然后我求助你...有什么问题？如何做到？

Well, obviously didn't work. I got tired of messing with ProGruard parameters, specially with that -keep options, with no success. All I found in the docs related to my problem could not help me. Then I am resorting to you... What is wrong? How to do it right?

推荐答案

我使用以下配置文件工作：

I got it to work using the following configuration file:

-injars       calc.jar
-outjars      calc_obf.jar
-libraryjars  <java.home>/lib/rt.jar
-keep class Calc {
  public static void main(java.lang.String[]);
}

最值得注意的是，我抛弃了 public 在前面类Calc 。

Most notably, I ditched the public in front of class Calc.

这篇关于如何使用ProGuard？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！