java - 尝试混淆时出现 NoSuchMapping 异常

Question

我正在尝试使用 yGuard 混淆一些 jar 文件。

shr​​ink 任务似乎工作正常，但第一个rename抛出异常。

Obfuscating Jar C:\work\jars\yguard_temp_8318169257227053930.jar to base_obf.jar [rename] An error ('No mapping found for: Class java.util.Deque') occured during the remapping! See the log!)

BUILD FAILED C:\rms\Setup_FlashAbsicherungsTool_3.4.X_ALPHA2\build.xml:32: yGuard encountered an IO problem!

日志也没有提供任何帮助:

<!-- An exception has occured.
com.yworks.yguard.obf.NoSuchMappingException: No mapping found for: Class java.util.Deque
com.yworks.yguard.obf.NoSuchMappingException: No mapping found for: Class java.util.Deque
    at com.yworks.yguard.obf.ClassTree.mapMethod(Unknown Source)
    at com.yworks.yguard.obf.classfile.ClassFile.remap(Unknown Source)
    at com.yworks.yguard.obf.GuardDB.remapTo(Unknown Source)
    at com.yworks.yguard.ObfuscatorTask.execute(Unknown Source)
    at com.yworks.yguard.YGuardTask.execute(Unknown Source)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:592)
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:435)
    at org.apache.tools.ant.Target.performTasks(Target.java:456)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1364)
    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1248)
    at org.apache.tools.ant.Main.runBuild(Main.java:851)
    at org.apache.tools.ant.Main.startAnt(Main.java:235)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
-->

非常感谢任何帮助。无法找出原因。

Answer 1

当您使用 externalclasses 嵌套元素包含某个类，而它也恰好位于 jar 内部时，似乎会出现问题(并且很可能它也必须可以从 中指定的点访问)收缩 元素)。