ProGuard：警告：org.apache.commons.beanutils.BeanMap$2：找不到超类或接口 org.apache.commons.collections.Transformer

Question

在 Android 应用上使用 Proguard 时出现以下错误。

ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$2: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$3: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$4: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$5: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$6: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$7: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$8: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$9: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanMap$Entry: can't find superclass or interface org.apache.commons.collections.keyvalue.AbstractMapEntry
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanPredicate: can't find superclass or interface org.apache.commons.collections.Predicate
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanPropertyValueChangeClosure: can't find superclass or interface org.apache.commons.collections.Closure
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanPropertyValueEqualsPredicate: can't find superclass or interface org.apache.commons.collections.Predicate
ProGuard: [sand] Warning: org.apache.commons.beanutils.BeanToPropertyValueTransformer: can't find superclass or interface org.apache.commons.collections.Transformer
ProGuard: [sand] Warning: org.apache.commons.beanutils.MappedPropertyDescriptor: can't find superclass or interface java.beans.PropertyDescriptor
ProGuard: [sand] Warning: org.apache.commons.logging.impl.ServletContextCleaner: can't find superclass or interface javax.servlet.ServletContextListener
ProGuard: [sand] Warning: roboguice.activity.RoboMapActivity: can't find superclass or interface com.google.android.maps.MapActivity
ProGuard: [sand] Warning: roboguice.test.shadow.ShadowFragmentActivity: can't find superclass or interface com.xtremelabs.robolectric.shadows.ShadowActivity
ProGuard: [sand] Warning: library class org.apache.http.auth.AuthenticationException extends or implements program class org.apache.http.ProtocolException
ProGuard: [sand] Warning: library class org.apache.http.auth.MalformedChallengeException extends or implements program class org.apache.http.ProtocolException
ProGuard: [sand] Warning: library class org.apache.http.auth.params.AuthParamBean extends or implements program class org.apache.http.params.HttpAbstractParamBean

    ... keeps going till 743 errors (warnings)

我尝试了几种方法来防止这种情况发生（-dontskipnonpubliclibraryclassmembers、-keep、-dontwarn、-ignorewarnings），但均未成功。也许我没有正确使用这些选项。我正在使用 IntelliJ 并针对 android-19 (Android 4.4.2)。

应用程序使用一些 3rd 方库构建：一些包含在 libs 文件夹中，另一些则通过 Maven pom.xml 包含。我怀疑通过 pom.xml 包含的库没有包含在 -libraryjars 选项中。

我的 project.properties 如下所示：

# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
proguard.config=${sdk.dir}/tools/proguard/proguard-android-optimize.txt:proguard-project.txt

# Project target.
target=android-19

我的 proguard-project.txt 看起来像这样：

-dontskipnonpubliclibraryclassmembers

# Libraries
-dontwarn org.apache.**

-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }

# WebView with JS: specify the fully qualified class name to the JavaScript interface class:
-keepclassmembers class fqcn.of.javascript.interface.for.webview {
   public *;
}

# Database model
-keep class com.mycompany.model.db.**
-keepclassmembers class com.mycompany.model.db.** { *; }

# Project target.
target=android-19

任何想法为什么会发生这种情况？

Answer 1

我解决了这个问题。这是由我的 IntelliJ 安装中的配置问题引起的：

项目右键 -> 打开模块设置 -> Facets 选项 -> 编译器选项卡：

1. 确保 Proguard 已启用
2. 确保配置文件路径应显示：
   • 我们项目中的 proguard-project.txt 文件
   • SDK 中的 proguard-android.txt。

在我的例子中，它只显示了来自 SDK 的那个，所以我对项目中的文件所做的更改没有被考虑在内。

在此更改之后，我可以使用 Proguard 文档中显示的 Proguard 选项并修复这些警告。

文件 project.properties 由 IntelliJ 自动生成，不应手动修改。即使此文件显示它正在使用这两个文件进行配置，也不一定正确，请查看“设置”对话框。