IDEA 10.5 Command line is too long

Question

In Maven project when I run test case (on Windows):

Error running TestApp.readParameter: Command line is too long. In order to reduce its length classpath file can be used. Would you like to enable classpath file mode for all run configurations of your project? Enable

set .iws

<property name="dynamic.classpath" value="true" />

How this could be fixed?

Solution 1

In Intellij, go to "edit configurations" (Run -> Edit Configurations), in the configuration tab that comes up in the line "shorten command line" select option "classpath file"/"@argFiles (Java 9+)", last option in the drop down menu. Fixed it for me.

Solution 2

Setting the Shorten command line:JAR manifest in Run/Debug Configurations resolves the issue.

Solution 3

Open the file .idea/workspace.xml file from your project root folder, go to section

<component name="PropertiesComponent">

and add the following:

<property name="dynamic.classpath" value="true" />

Solution 4

Did this on Intelij community 2021.1 windows, Worked fine :)

1. On the edit configuration menu, click on modify options

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2. And then select Shorten command line

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3. Select JAR manifest option, apply & run

Solution 5

See What does the dynamic.classpath flag do? (IntelliJ project settings).

Not sure what you want to fix. If you need to avoid dynamic classpath, revise your dependencies, move libraries, project files and JDK to a directory with short path.

Edit: the bug you linked in comments makes sense, however what happens is that the command line when running your tests exceeds the OS limit even when using dynamic classpath. This can happen because of lots of command line arguments or options which cannot be shortened by IDEA, as IDEA can only workaround long classpath issue. There is nothing we can do about it, you should revise the way you pass parameters to your app so that the command line length is within limits.

From the IDEA side, we'll improve the handling of such case. This dialog will no longer be displayed when dynamic classpath is already used and you will get another error message about the long command line. I've submitted a new issue for this case.

View more solutions

Comments

[qinmiao]

i see it.when i set dynamic.classpath=true,the Command line is still too long

[CrazyCoder]

In this case it's a bug which should be reported at youtrack.jetbrains.net/issues/IDEA.

[thijsraets]

Now you can set "Shorten command line" to "JAR manifest" under your default JUnit configuration.

[patrik]

I have not seen this in Linux (or it might have to do with Java 9). However I do not start to do refactoring of the project. More precise I am not allowed to. Do you have any other advice?

[user7023213]

if one makes a global junit config with same settings then it wont be necessary to do this setting for all individual test config one is running!

[Vijai]

To reach it from Intellij Top menu use "Run => Edit Configurations"

[Doogle]

Thanks for the details this really works tried and tested some bug in intellij i guess not picking correctly this helps.

[simno]

If you don't see this option in the menu press "Modify options v Alt+M" dropdown menu and check "Shorten command line" option to show it (IDEA CE 2020.3).

[elect]

This doesnt look to be available anymore on the last Idea 2020.3

[Nathan]

I'm running IntelliJ IDEA Ultimate 2020.3. This option was available (and solved the problem for me).

[JSON derulo]

@elect the option is there in 2020.3: Edit Configurations -> "Configurations" tab -> Environments

[cnmuc]

If you don't see option "Shorten command line", click on "Modify Options" and check "Shorten command line"

[Radek Konrad Furmański]

The fix also worked for me, but on WINDOWS the intellij had problems with picking up any updates to the code. So I reduced the length of the path of the repository C:/user/repository/lots-of-other-characters-and-sub-paths to C:/user/repository/not-so-many-of-other-characters-and-sub-p‌​aths. By leveraging that solution the "Shorten command" option was no longer needed and now the changes are properly taken into consideration by the IDE

[rios0rios0]

It still works on the 2022.1.2. Just the path is a little bit different. You need to "Modify options" near the title "Build and run".

[datsb]

The entire path Run > Edit Configurations > "shorten command line" works for me, except that instead of "classpath file" I needed "JAR manifest" (otherwise some XML resource files would not be found). IntelliJ IDEA 2022.1.1 CE

[datsb]

"JAR manifest" (instead of Classpath) is what worked for me. IntelliJ IDEA 2022.1.1 CE