如何处理 Android/Maven 项目中缺少 src/test/java 源文件夹？
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How to deal with missing src/test/java source folder in Android/Maven project?
提问by Bevor
I'm not very experienced with Maven in combination with Android yet, so I followed theseinstructions to make a new Android project. When the project has been created, I get the following error message:
我对 Maven 与 Android 结合还不是很有经验，所以我按照这些说明制作了一个新的 Android 项目。创建项目后，我收到以下错误消息：
Project 'xxx-1.0-SNAPSHOT' is missing required source folder: 'src/test/java'
项目“xxx-1.0-SNAPSHOT”缺少所需的源文件夹：“src/test/java”
When I try to add a new source folder with New->Other->Java-Source Folder with src/test/java, I get another error message:
当我尝试使用 New->Other->Java-Source Folder with src/test/java 添加新的源文件夹时，我收到另一条错误消息：
The folder is already a source folder.
该文件夹已经是一个源文件夹。
But I don't have any src/test/java folder in my project. How should I deal with that? What's the clean way to setup the project, because I assume that there is something missing in this instruction. So what is the Maven way to let src/test/java appear?
但是我的项目中没有任何 src/test/java 文件夹。我该如何处理？设置项目的干净方法是什么，因为我认为此说明中缺少某些内容。那么Maven的方式是什么让src/test/java出现呢？
I'm using Eclipse Juno, m2e 1.1.0, Android Configuration for m2e 0.4.2.
我正在使用 Eclipse Juno、m2e 1.1.0、m2e 0.4.2 的 Android 配置。
回答by yorkw
I realise this annoying thing too since latest m2e-android plugin upgrade (version 0.4.2), it happens in both new project creation and existing project import (if you don't use src/test/java).
自从最新的 m2e-android 插件升级（版本 0.4.2）以来，我也意识到了这个烦人的事情，它发生在新项目创建和现有项目导入中（如果你不使用 src/test/java）。
It looks like m2e-android (or perhaps m2e) now always trying to add src/test/javaas a source folder, regardless of whether it is actually existed in your project directory, in the .classpath file:
看起来 m2e-android（或者可能是 m2e）现在总是试图添加src/test/java为源文件夹，无论它是否确实存在于您的项目目录中，在 .classpath 文件中：
<classpathentry kind="src" output="bin/classes" path="src/test/java">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
As it is already added in the project metadata file, so if you trying to add the source folder via Eclipse, Eclipse will complain that the classpathentry is already exist:
由于它已经添加到项目元数据文件中，所以如果您尝试通过 Eclipse 添加源文件夹，Eclipse 会抱怨 classpathentry 已经存在：
There are several ways to fix it, the easiest is manually create src/test/java directory in the file system, then refresh your project by press F5and run Maven -> Update Project (Right click project, choose Maven -> Update Project...), this should fix the missing required source folder: 'src/test/java' error.
有几种方法可以修复它，最简单的方法是在文件系统中手动创建 src/test/java 目录，然后通过按下F5并运行 Maven -> Update Project（右键单击项目，选择 Maven -> Update Project.. .)，这应该修复缺少的必需源文件夹：'src/test/java' 错误。
回答by Kandy
We can add java folder from
我们可以从
- Build Path -> Source.
- click on Add Folder.
- Select main as the container.
- click on Create Folder.
- Enter Folder name as java.
- Click on Finish
- 构建路径 -> 源。
- 单击添加文件夹。
- 选择 main 作为容器。
- 单击创建文件夹。
- 输入文件夹名称为 java。
- 点击完成
It works fine.
它工作正常。
回答by weHyman
I solve the problem by creating a folder named "src/test/resources" first, then i rename the folder to "src/test/java" ,finally create a "src/test/resources" folder again .It works .
我通过首先创建一个名为“src/test/resources”的文件夹来解决这个问题，然后我将该文件夹重命名为“src/test/java”，最后再次创建一个“src/test/resources”文件夹。它有效。
回答by JavaCreeper
This is possibly caused due to lost source directory.
这可能是由于丢失了源目录造成的。
Right click on the folder src -> Change to Source Folder
右键单击文件夹 src -> 更改为源文件夹
回答by Mehdi
I had the same issue, fixed it. Create the missing folder directly in your file system (Using windows explorer for example) . And then, refresh your project under eclipse.
我遇到了同样的问题，已修复。直接在您的文件系统中创建丢失的文件夹（例如使用 Windows 资源管理器）。然后，在 eclipse 下刷新您的项目。
回答by Ricardo Gladwell
This is a bug in the Android Connector for M2E (m2e-android) that was recently fixed:
这是最近修复的 Android Connector for M2E (m2e-android) 中的一个错误：
https://github.com/rgladwell/m2e-android/commit/2b490f900153cd34fff1cec47fe5aeffabe44d87
https://github.com/rgladwell/m2e-android/commit/2b490f900153cd34fff1cec47fe5aeffabe44d87
This fix has been merged and will be available with the next release. In the meantime you can test the new fix by installing from the following update site:
此修复程序已合并，将在下一个版本中提供。同时，您可以通过从以下更新站点安装来测试新修复：
回答by Dish
Removing the m2 plugin from startup-up plugin's list and doing a Maven->Update Projects on all the projects worked for me.
从启动插件列表中删除 m2 插件，并对所有对我有用的项目执行 Maven->Update Projects。
Note** One should not create additional folders to avoid merging them while using SVN/Git based branches.
注意** 在使用基于 SVN/Git 的分支时，不应创建额外的文件夹以避免合并它们。
回答by ahmednabil88
In the case of Mavenproject
在Maven项目 的情况下
Try right click on the project then select Maven -> Update Project...then Ok
尝试在该项目右键单击，然后选择Maven -> Update Project...再Ok
