java - Proguard 的 -whyareyoukeeping 的输出在哪里？

Question

我正在使用 Eclipse Luna Service Release 1(4.4.1 build id 20140925-1800)和 M2E for Maven。我想知道为什么a.company.Clazz正在保存。我添加了 <option>-whyareyoukeeping class a.company.Clazz</option>到配置(见下文)。 Eclipse 控制台显示输出(见下文)。执行暂停在 Explaining why classes and class members are being kept...但控制台没有任何输出。

我用了Sysinternal's Process Monitor查看是否有任何输出到文件。我看到输出被写入 ...\target\proguard_seeds.txt和 ...\target\glass.jar但这些都不包含保留 a.company.Clazz 的原因.

配置

...

      <plugin>
        <groupId>com.github.wvengen</groupId>
        <artifactId>proguard-maven-plugin</artifactId>
        <version>2.0.8</version>
        ...
        <configuration>
          <proguardVersion>5.0</proguardVersion>
          <injar>${project.build.finalName}.jar</injar>
          <outjar>glass.jar</outjar>
          <includeDependency>true</includeDependency>
          <obfuscate>false</obfuscate>
          <options>
            <option>-verbose</option>
            <option>-whyareyoukeeping class a.company.Clazz</option>
            <option>-dontnote</option>
            <option>-dontoptimize</option>
            ...
          </options>
          ...
        </configuration>
      </plugin>

...

输出

...

 [proguard] Printing kept classes, fields, and methods...
 [proguard] Shrinking...
 [proguard] Explaining why classes and class members are being kept...
 [proguard] 
 [proguard] Removing unused program classes and class elements...
 [proguard]   Original number of program classes: 1988
 [proguard]   Final number of program classes:    136
 [proguard] Inlining subroutines...
 [proguard] Preverifying...
 [proguard] Writing output...

...

Answer 1

如果该类未保留或该类甚至不存在，Proguard 将不会输出任何内容。