blocks|key|276761|text|当您从现有源代码创建NetBeans项目时，NetBeans使用相同的目录来添加它自己的文件:包含.proj文件的netbeans文件夹。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|276762|解决方法:删除netbeans文件夹并重新启动集成开发环境。现在应该可以打开一个新项目了。|276763|entityMap^0|1L|8|0|7|8|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

When you create a NetBeans project from existing sources, NetBeans uses the same directory to add its own files: a <code>netbeans</code> folder with .proj files.

Solution: delete the <code>netbeans</code> folder and restart the IDE. Opening a new project should now work.

blocks|key|282448|text|发生这种情况(我相信)是因为netbeans试图对创建或编辑的文件进行版本控制。在项目文件夹netbeans下，创建一个netbeans目录，只需删除它即可。这已经在Ubuntu上测试过了。然后你可以导入你的项目，如果php，那么php使用现有的源代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282449|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

This happens(i believe) because netbeans tries to version control the files created or edited.
Under the project folder netbeans create a netbeans directory just delete it . This has been tested in Ubuntu. Then you can import your project if php then php using existing sources.

blocks|key|282464|text|谢谢!|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282465|我也有同样的问题：|282466|Sources的目录已经是NetBeans的项目版本了(可能只有内存中的版本)。|282467|Netbeans会在项目中创建一个名为"nbproject“的文件夹。删除后，重新启动IDE，就可以开始工作了。|282468|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Thank you!

I was having the same problem: 
Sources directory is already NetBeans project (maybe only in memory).

Netbeans creates a folder in your project named "nbproject". Once you delete that, restart the IDE and you're good to go.

blocks|key|276893|text|单击File+>>+Recent+Projects+>，您应该能够再次使用编辑它。希望它能有所帮助:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276894|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Click File >> Recent Projects > and you should be able to use edit it again. Hope it helps :)

blocks|key|282565|text|通常，当我们复制已经创建的项目的源代码，并将其复制到不同的文件夹中，然后尝试从它创建项目时，就会发生这种情况。当项目在我们的项目文件夹中创建它的文件夹nbproject时，这个文件夹也会被复制到我们的源代码中，它会给出错误"Sources+directory+is+netBeans+NetBeans+(可能只在内存中)“，从你新复制的文件夹中删除这个文件夹，你就可以创建一个新的项目了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282566|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Usually this happened when we copy source code of a already created project and copied in different folder and try to create a project from it. as netBeans create its folder nbproject in our project folder this folder also get copied with our source code and it give error "Sources directory is already NetBeans project (maybe only in memory)" remove this folder from you newly copied folder and voila you can create a new project.

blocks|key|276921|text|如果这是您自己的源代码，并且您已经有一个包含源文件的Netbeans项目文件夹，则应该从以下位置开始：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276922|File+%7C+Open+Project...+|code-block|syntax|javascript|276923|不|276924|File+%7C+New+Project+...+|276925|因为这个项目并不新鲜。|276926|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If this is your own source code and you already have a Netbeans project folder with your source files you should just start with: 

<pre><code>File | Open Project... 
</code></pre>

not 

<pre><code>File | New Project ... 
</code></pre>

because the project is not new.

blocks|key|282644|text|如果它对其他人有帮助，我也有同样的问题，解决方案是重新安装NetBeans。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282645|我尝试了各种修复方法:删除NetBeansProjects文件夹，选中/取消选中“将Netbeans元数据放在单独的目录中”，终止/重新启动NetBeans，重新启动系统，等等。没有任何东西清除message...except的重新安装。|282646|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If it helps anyone else, I had the same problem and the solution was to reinstall NetBeans.

I had tried all sorts of fixes: Deleting the NetBeansProjects folders, checking/unchecking "Put Netbeans metadata in a separate directory", killing/restarting NetBeans, restarting the system, etc. Nothing cleared the message...except the reinstall.

blocks|key|3201047|text|Netbeans|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3201048|转到包含项目的文件夹|unordered-list-item|3201049|
|3201050|删除名为nbproject|offset|length|style|CODE|3201051|3201052|Restart+Netbeans|3201053|3201054|的文件夹尝试从原始文件夹|3201055|
重新创建项目|3201056|entityMap^0|0|0|0|4|9|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|Y|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|Z|8|@$I|10|J|11|K|L]]|9|@]|A|$]]|$1|M|3|F|5|6|7|12|8|@]|9|@]|A|$]]|$1|N|3|O|5|D|7|13|8|@]|9|@]|A|$]]|$1|P|3|F|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

<ol>
<li>Go to the folder containing your project</li>
<li>Delete the folder named <code>nbproject</code></li>
<li>Restart Netbeans</li>
<li>Try creating your project again from the original folder</li>
</ol>

blocks|key|276974|text|这里关于删除nbproject目录的建议并不是全部。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|276975|Netbeans似乎所做的(我们在这里猜测是反向工程)是查找其中包含开始和结束项目标记的xml文件。它得出结论，这是一个已经存在的项目的证据。现在，如果您的文件中有一个nbproject目录，那么它将包含一个包含上述标记的project.xml文件。所以删除它将会达到你想要的效果。|276976|但是，我的文件没有nbproject目录，但NetBeans仍然告诉我可能在内存中有一个现有的项目。原因是:我的文件包含一个名为pom.xml的文件，该文件在xml中包含上述项目标记(它是由一个完全不同的系统创建的)。一旦该xml文件被删除，NetBeans将为我创建一个html项目来导入我的代码。|276977|总而言之:检查现有代码中的任何xml文件，并注意项目标记。|276978|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

The advice here about removing the nbproject directory is not quite the whole story.

What Netbeans seems to do (and we are guessing at reverse engineering here) is to look for an xml file which has opening and closing project tags in it. This it concludes is evidence of an already existing project. Now if your files have an nbproject directory there, that will contain a project.xml file which contains the said tags. So removing that will do what you want.

But, my files don't have a nbproject directory but still NetBeans tells me there is an existing project maybe in memory. The reason is: my files include a file called pom.xml and that contains the said project tags in the xml (it was created by an entirely different system). Once that xml file is removed, then NetBeans will create an html project for me importing my code.

In sum: look through any xml files in you existing code, and be wary of project tags.

blocks|key|280575|text|当我试图在Ubuntu12.04LTS上全新的NetBeans+7.2.1安装中导入一个Eclipse项目时，就发生了这种情况。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280576|我在第一次尝试时错误地选择了import+projects+from+workspace+(导入向导打开窗格中的第一个选项)，它在原始的Eclipse工作区路径(在U盘上)中打开了项目。|offset|length|style|CODE|280577|从这里，我意识到我实际上需要第二个选项-+import+project+ignoring+project+dependencies，它可以让您专门选择源和目标文件夹。在关闭项目后，我尝试使用适当的选项再次导入，但不起作用。从那时起，我什么也没做--重启IDE，移动源文件夹，什么也没做。项目中没有nbproject文件夹，也没有要删除的用户文件夹中的/var/cache+(事实上，整个文件系统中没有nbproject文件夹)。|280578|由于重启不起作用，我猜在某个地方有一个Nb读取的垃圾项目条目(参见上面的Martin+Frickéanswer+)。|280579|在谷歌搜索“NetBeans+clear+memory+project+cache”没有成功之后，我选择了重装NetBeans--|280580|sudo+/usr/local/netbeans-7.2.1/uninstall
sudo+./netbeans-7.2.1-ml-javase-linux.sh|code-block|syntax|javascript|280581|解决了这个问题。|280582|entityMap^0|0|E|U|0|L|18|4V|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@$D|11|E|12|F|G]|$D|13|E|14|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|15|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|16|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|17|8|@]|9|@]|A|$Q|R]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|V|$]]

This happened to me when I tried to import an Eclipse project in a brand new NetBeans 7.2.1 install on Ubuntu 12.04LTS.

I mistakenly selected the <code>import projects from workspace</code> (the first option in the import wizard's opening pane) on the first attempt, and it opened the project in the original Eclipse workspace path (which was on a usb stick).

From this, I then realized that I actually need the second option - <code>import project ignoring project dependencies</code>, which lets you specifically choose source and destination folders. After closing the project, I tried to import again with the proper option, but it didn't work.
From then on nothing I did helped - restart the IDE, move the source folder, nothing. There was no nbproject folder in the project or <code>/var/cache</code> in the user folder to delete (in-fact there was no nbproject folder in the whole file-system).

Since restart didn't work, I'm guessing that there is a garbage project entry somewhere which Nb reads (See Martin Frické answer above).

After googling along the lines of 'netbeans clear memory project cache' with no success, I opted to reinstall NetBeans -

<pre><code>sudo /usr/local/netbeans-7.2.1/uninstall
sudo ./netbeans-7.2.1-ml-javase-linux.sh
</code></pre>

which solved it.

blocks|key|280584|text|至少在Windows上，这些答案都不起作用(至少对我来说是这样！)。我发现唯一的方法是将现有的netbeans项目文件夹复制到新项目中，然后手动编辑xml项目名称。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280585|我还打开了private/private.xml并删除了打开的文件xml，以防出现问题。|280586|一旦我这样做了，项目就会照常工作。|280587|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

On Windows at least none of these answers work (for me anyway!). I have found the only way is to copy an existing netbeans project folder in to your new project and manually edit the xml project name.

I also opened the private/private.xml and removed the open files xml just incase these caused problems.

Once I'd done this the project works as normal.

blocks|key|3201164|text|我检查了“将NetBeans元数据放在单独的目录中”，它工作得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3201165|这是在PHP2.Name+and+Location中，在您从现有源代码中选择PHP后|3201166|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I checked the "Put NetBeans metadata in separate directory" tick and it works fine.

This is in 2. Name and Location after you choose PHP from existing source

blocks|key|282712|text|如果你使用的是苹果电脑，按下shift+G键，然后在框中输入/users，然后点击go，点击你的用户名，导航到navigate项目并打开它。然后删除其中引起问题的那些。然后，您可以创建您的项目。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282713|注意:我把我的wordpress文件夹移到了我的桌面上，试图解决这个问题，所以我把它放回了原来的位置，它工作得很好。因此，如果你这样做了，只需在从netbeansprojects文件夹中删除问题项目并将其内容恢复到原始安装文件夹后替换wordpress文件夹即可。|282714|希望这能有所帮助...：)|282715|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you are on a Mac, press command shift G and in the box type /users and then go, next click on your user name and navigate to netbeansprojects and open it. Then delete the ones in there that are causing problems. You can then create your project. 

Note: I had moved my wordpress folder to my desktop trying to figure this out, so I dropped it back into the origional location and it works fine. So if you did this, just replace the wordpress folder after deleting the problem projects from the netbeansprojects folder and its contents back to the original installation folder.

Hope this helps...:)

blocks|key|280662|text|这是我为解决这个错误所做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280663|1)我复制了一个名为"folder1“的文件夹(我将新文件夹命名为"folder2")。"folder1“是一个Netbeans项目，所以它里面有一个名为"nbproject”的文件夹。|280664|2)当我试图在"folder2“之外创建一个项目时，Netbeans抛出了一个错误"Sources+directory+is+netbeans+project+(可能只在内存中)”。|280665|3)在Netbeans内部删除"folder1“项目。然后，删除名为"nbproject“的两个文件夹(一个在"folder1”中，另一个在“folder2”中)。|280666|4)在Netbeans中，创建两个新项目:一个用于"folder1“，另一个用于"folder2”。错误应该不会再出现。|280667|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

This is what I did to solve this error: 

1) I copied a folder named "folder1" (and I called the new folder "folder2"). "folder1" was a Netbeans project so it had a folder called "nbproject" inside it. 

2) When I tried to create a project out of the "folder2", Netbeans threw an error "Sources directory is already netbeans project (maybe only in memory)."

3) Inside Netbeans delete the project of "folder1". Then, delete the two folders named "nbproject" (one is inside "folder1" and the other is inside "folder2"). 

4) Inside Netbeans, create two new projects: one for "folder1" and another for "folder2". The error should not appear anymore.

blocks|key|2987833|text|这意味着该项目文件夹已经是一个netbeans项目。因此，不要将其添加为新项目，而应将其打开为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2987834|📷|atomic|offset|length|2987835|​|2987836|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/65a5f6d1eecf180603cd5337981e013a.png|imageAlt^0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@$E|T|F|U|1|V]]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P|Q|-4]]]]

This means the project folder is already a netbeans project. So instead of adding it as a new project open it as<img src="https://i.stack.imgur.com/qBWfa.png" alt="enter image description here">

blocks|key|277105|text|在我的例子中，我的项目根目录由".project"组成。它包含项目名称的XML引用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|277106|通过删除它，我能够创建一个项目。|277107|entityMap^0|F|A|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

In my case my project root directory consists ".project". This contain the XML reference of the project name.

By removing this, i am able to create a project.

blocks|key|278880|text|项目将现有的netbeans项目文件夹复制到新项目中，然后手动将xml项目中的所有文件/文件夹(+nbproject/文件夹除外)编辑到项目的新文件夹中，并使用新名称。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|278881|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

<ol>
<li>copy an existing netbeans project folder in to your new project and manually edit the xml project name.</li>
<li>reinstall netbeans</li>
<li>copy/move all files/folders (except nbproject/ folder) to a new folder for your project, with a new name.</li>
</ol>

blocks|key|2987869|text|尝试创建一个新的空项目；然后您可以将public_html复制到新的项目文件夹中，它就会出现。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2987870|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Try to create a new empty project; then you can copy the public_html to the new project folder and it will appear .

blocks|key|282744|text|我也面临着同样的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|282745|282746|源目录已经是NetBeans项目(可能只在内存中)。|blockquote|282747|282748|282749|解决方案是：|282750|282751|+Netbeans会在您的项目中创建一个名为"nbproject“的文件夹。一旦你删除了那个，重启IDE，你就可以开始了。|offset|length|style|BOLD|282752|282753|entityMap^0|0|0|0|0|0|0|0|N|9|1B|5|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|V|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|E|7|10|8|@$M|11|N|12|O|P]|$M|13|N|14|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|S|$]]

I faced the same issue:

<blockquote>
 Sources directory is already NetBeans project (maybe only in memory).
</blockquote>

The solution is:

<blockquote>
 Netbeans creates a folder in your project named "nbproject". Once you
 delete that, restart the IDE and you're good to go.
</blockquote>

I've installed NetBeans 6.9.1 and installed few updates for it.

Then I've created a new project from existing sources. After a few changes I've closed it. And now I am having an error, when trying to open a new project from existing sources (the same files):

<blockquote>
 Sources directory is already netbeans project (maybe only in memory).
</blockquote>

After Googling it, I noticed it happened not only with me. But I didn't find the correct solution. I've tried to restart the IDE, I've tried to restart the PC, I've tried to reinstall NetBeans. Nothing helped.

"Sources directory is already netbeans project" error when opening a project from existing sources

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经安装了NetBeans 6.9.1，并且安装了一些更新。然后，我已经根据现有的源代码创建了一个新项目。经过几次更改后，我关闭了它。现在，当我试图从现有的源代码(相同的文件)打开一个新项目时，我遇到了一个错误：netbeans源目录已经是项目(可能只在内存中)。在谷歌上搜索之后，我注意到这不仅仅发生在我身上。但是我...

问从现有源中打开项目时出现"Sources directory already project“错误
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