为什么我在运行应用程序时遇到以下错误？构建应用程序时没有错误。
trouble processing "javax/security/cert/CertificateException.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.
[2015-01-15 18:24:25 - ProjectName] Dx 1 error; aborting
[2015-01-15 18:24:25 - ProjectName] Conversion to Dalvik format failed with error 1
答案 0 :(得分：3)
您正在尝试向项目中添加java或javax类。一般情况下不支持此功能。
在这种特定情况下，您尝试添加a javax class that already exists in Android。这完全没有意义，因为Android中的副本将胜过这个库中的任何副本。
您尝试使用的库并非设计用于Android（并且在常规Java上会受到严重怀疑），并且需要进行修改。使用其他图书馆可能会更好。