将 Maven 与 Android Dx 一起使用时的问题答案

【问题标题】：Issues while Using Maven with Android Dx将 Maven 与 Android Dx 一起使用时的问题
【发布时间】：2014-03-20 22:38:16
【问题描述】：

我在尝试使用 Maven 和 Eclipse 创建项目时遇到了很多问题。它随机显示以下消息：

[2014-03-20 16:36:40 - App] Dx 
trouble processing "javax/xml/namespace/QName.class":

Ill-advised or mistaken usage of a core class (java.* or javax.*)
when not building a core library.

This is often due to inadvertently including a core library file
in your application's project, when using an IDE (such as
Eclipse). If you are sure you're not intentionally defining a
core class, then this is the most likely explanation of what's
going on.

However, you might actually be trying to define a class in a core
namespace, the source of which you may have taken, for example,
from a non-Android virtual machine project. This will most
assuredly not work. At a minimum, it jeopardizes the
compatibility of your app with future versions of the platform.
It is also often of questionable legality.

If you really intend to build a core library -- which is only
appropriate as part of creating a full virtual machine
distribution, as opposed to compiling an application -- then use
the "--core-library" option to suppress this error message.

If you go ahead and use "--core-library" but are in fact
building an application, then be forewarned that your application
will still fail to build or run, at some point. Please be
prepared for angry customers who find, for example, that your
application ceases to function once they upgrade their operating
system. You will be to blame for this problem.

If you are legitimately using some code that happens to be in a
core package, then the easiest safe alternative you have is to
repackage that code. That is, move the classes in question into
your own package namespace. This means that they will never be in
conflict with core system classes. JarJar is a tool that may help
you in this endeavor. If you find that you cannot do this, then
that is an indication that the path you are on will ultimately
lead to pain, suffering, grief, and lamentation.

[2014-03-20 16:36:40 - App] Dx 1 error; aborting
[2014-03-20 16:36:40 - App] Conversion to Dalvik format failed with error 1

当我说它是随机的时，它真的是随机的，几分钟前我运行该项目还不错，现在，它出现了。

我不知道发生了什么，因为我没有使用 QName.class。

你知道发生了什么吗？？？

非常感谢

【问题讨论】：

能否请您发布您的 POM？

标签： java android eclipse maven

【解决方案1】：

如果您使用 Maven android 插件 或 m2e-android，您需要注意您的依赖关系：它看起来好像有传递依赖其中包括javax.xml.* pacakage，如果您阅读错误消息，这对于 Dalvik 编译是非法的。

解决方案：找到传递依赖和exclude it in your POM。

【讨论】：

抱歉，我的回复晚了，我正在使用 Android Dependencies 开发一些库，导致了这个可怕的错误。谢谢！

【解决方案2】：

对不起，我的回复晚了：

当我开发这部分项目时，我还创建了一些库，但更像是一个 DataAccess 库或 Model 库，所以而不是创建一个 Android 项目我创建了一个简单的 Java 库项目，因为我只使用了一些 Android API，例如 DataAccess的 Context > 和 Model 的另一个，在我的 pom.xml 上，我没有排除 Android Jars 所以造成了冲突。

以防万一有人做同样的事情......

谢谢！！

【讨论】：