更新到 Android Studio 3.1 后，项目未构建:程序类型已存在:com.sun.activation.registries.LineTokenizer [英] After update to Android Studio 3.1 the project does not build: Program type already present: com.sun.activation.registries.LineTokenizer
问题描述
我刚刚将我的 Android Studio 更新到了 3.1 版，但我对一条未知的错误消息感到惊讶:程序类型已经存在:com.sun.activation.registries.LineTokenizer
>:testeapn:transformClassesWithDexBuilderForDebug AGPBI:>{"kind":"error","text":"程序类型已经存在:com.sun.activation.registries.LineTokenizer","sources":[{}],"tool":"D8"}>:testeapn:transformDexArchiveWithExternalLibsDexMergerForDebug 失败>>FAILURE:构建失败，出现异常.>>* 出了什么问题:任务 ':testeapn:transformDexArchiveWithExternalLibsDexMergerForDebug' 执行失败.经过大量挖掘后，我意识到问题出在 javax.mail 库上.因此，在删除每个 .jar 和对该库的每个提及后，我可以再次构建，但我删除了我的应用程序的此功能.
现在我必须让我的应用程序再次发送邮件，但我找不到如何做到这一点，我请求您的帮助.
我谷歌了很多，发现在 https://javaee.github.io/javamail/Android 新信息(至少对我而言):我们不应再添加 additionnal.jar、mail.jar 和 activation.jar.我们必须添加新的依赖项:
<块引用>实现'com.sun.mail:android-mail:1.6.1'实现 'com.sun.mail:android-activation:1.6.1'但是，在我的 app.gradle 中添加这些行并且没有编写一行代码后，我再次遇到上述错误.
有人知道这条消息是什么意思以及该怎么做吗?
从 3 个 jars (additionnal.jar, mail.jar 和 activation.jar) 到 com.sun.mail:android-mail:1.6.1 和 com.sun.mail:android-activation:1.6.1.我也在使用 Android Studio 3.1.
我的解决方案是，不使用 1.6.1，而是使用稍旧的 1.6.0 版本.错误消失，应用重新构建并运行.
<块引用><代码>实现 'com.sun.mail:android-mail:1.6.0'实现 'com.sun.mail:android-activation:1.6.0'
<小时>
一些细节
我在那里做了一些挖掘.似乎问题在于 com.sun.mail:android-activation:1.6.1 依赖于 javax.activation:activation:1.1，并且这两个包都包含com.sun.activation.registries.* 类.它导致构建失败.
相反，com.sun.mail:android-activation:1.6.0中没有依赖.
依赖图是通过运行gradlew :app:dependencies --configuration debugRuntimeClasspath生成的.
- 使用
1.6.0时<块引用><代码>debugRuntimeClasspath - 变体运行时的已解析配置:调试+--- com.sun.mail:android-mail:1.6.1|+--- com.sun.mail:android-activation:1.6.1||\--- javax.activation:activation:1.1|\--- javax.activation:activation:1.1+--- com.sun.mail:android-activation:1.6.1 (*)+---
- 使用
1.6.0时<块引用><代码>debugRuntimeClasspath - 变体运行时的已解析配置:调试+--- com.sun.mail:android-mail:1.6.0|\--- com.sun.mail:android-activation:1.6.0+--- com.sun.mail:android-activation:1.6.0
您也可以在以下屏幕截图中看到它.
使用 1.6.1 版时的 Android Studio 屏幕截图
虽然我想向他们的开发人员发布错误报告.他们的旧问题跟踪器页面(https://github.com/javaee/javamail/issues)已关闭，他们在 Eclipse Foundation 上的新项目页面 (https://projects.eclipse.org/项目/ee4j.javamail) 非常慢，我几乎无法打开它.
I just updated my Android Studio to version 3.1 and I was surprised with an unknown error message: Program type already present: com.sun.activation.registries.LineTokenizer
> :testeapn:transformClassesWithDexBuilderForDebug AGPBI:
> {"kind":"error","text":"Program type already present: com.sun.activation.registries.LineTokenizer","sources":[{}],"tool":"D8"}
> :testeapn:transformDexArchiveWithExternalLibsDexMergerForDebug FAILED
>
> FAILURE: Build failed with an exception.
>
> * What went wrong: Execution failed for task ':testeapn:transformDexArchiveWithExternalLibsDexMergerForDebug'.
After digging a lot I realized the problems was the javax.mail library. So, after remove every .jar and every mentions to that library and I could build again, but I removed this feature of my app.
Now I have to make my app to send mails again, but I can't find how to do this and I'm asking you for a help.
I google a lot and found in https://javaee.github.io/javamail/Android new information (for me, at least): we should not add the additionnal.jar, mail.jar and activation.jar anymore. We must add new dependencies:
implementation 'com.sun.mail:android-mail:1.6.1' implementation 'com.sun.mail:android-activation:1.6.1'
But, after add those lines in my app.gradle and without write a line of code, I got the above error again.
Do someone know what this message means and what to do?
I had exactly the same problem as you after upgrading from the 3 jars (additionnal.jar, mail.jar and activation.jar) to com.sun.mail:android-mail:1.6.1 and com.sun.mail:android-activation:1.6.1. I am also using Android Studio 3.1.
My solution is, instead of using 1.6.1, using the a little bit older version 1.6.0. The error is gone and the app builds and works again.
implementation 'com.sun.mail:android-mail:1.6.0' implementation 'com.sun.mail:android-activation:1.6.0'
Some details
I did a little digging there. It seems the problem is that com.sun.mail:android-activation:1.6.1 has a dependency on javax.activation:activation:1.1, and both these packages contain com.sun.activation.registries.* classes. It caused the build to fail.
On the contrary, the dependency wasn't there in com.sun.mail:android-activation:1.6.0.
The dependency graph is generated by running gradlew :app:dependencies --configuration debugRuntimeClasspath.
- when using
1.6.0debugRuntimeClasspath - Resolved configuration for runtime for variant: debug +--- com.sun.mail:android-mail:1.6.1 | +--- com.sun.mail:android-activation:1.6.1 | | \--- javax.activation:activation:1.1 | \--- javax.activation:activation:1.1 +--- com.sun.mail:android-activation:1.6.1 (*) +--- - when using
1.6.0debugRuntimeClasspath - Resolved configuration for runtime for variant: debug +--- com.sun.mail:android-mail:1.6.0 | \--- com.sun.mail:android-activation:1.6.0 +--- com.sun.mail:android-activation:1.6.0
You can see it in the following screen shot too.
Android Studio screen shot when using version 1.6.1
Though I would like to issue a bug report to their developers. Their old Issue Tracker page (https://github.com/javaee/javamail/issues) is closed, and their new project page on Eclipse Foundation (https://projects.eclipse.org/projects/ee4j.javamail) is extremely slow that I can barely open it.
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