Maven with Cygwin - 错误：JAVA_HOME未正确定义

Question

I'm trying to run Maven on cygwin. I've added maven to the path and my Java home looks like this:

$ echo $JAVA_HOME 
/cygdrive/c/Program Files/Java/jdk1.6.0

Yet when I try to run mvn --version , I get this:

Error: JAVA_HOME is not defined correctly.
  We cannot execute /cygdrive/c/Program Files/Java/jdk1.7.0_01/bin/java

Any idea why it's not working? Java -version works fine, so it's not a problem with java. I've also tried jdk1.6.0 instead.

Running which java gives,

$ which java
/cygdrive/c/windows/system32/java

and java -version gives,

$ java -version
java version "1.7.0_01"
Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
Java HotSpot(TM) Client VM (build 21.1-b02, mixed mode, sharing)

Answer 1

If I run mvn.bat instead of mvn , I didn't have this problem.

So, since Cygwin will run the mvn file, I replaced this mvn file with a softlink ( ln -s mvn.bat mvn ) to the batch file. This way, running mvn will silently run the mvn.bat which handles these problems gracefully.

Answer 2

Anyone Using Cygwin and Maven, here's exactly what you need:

In your Cygwin bash prompt:

$ vim ~/.bashrc

or:

$ nano ~/.bashrc

(Which ever you fancy...)

Append the following:

alias mvn=mvn.bat

Save and Exit. Then run:

$ source ~/.bashrc

Now you should be able to use the mvn command as you do in cmd prompt.

Answer 3

Cygwin uses a dos console to execute Maven builds ( mvn.bat ).

Set your Java home to the C:\\Program Files\\Java\\jdk1.7.0_01 location.

Answer 4

I was facing the same problem while running gradle from cygwin tool.

I used to set the Java home including the bin folder:

C:\Program Files\Java\jdk1.7.0_67\bin

But later I realized that some application do not recognize if you include bin folder, so I changed the class path to C:\\Program Files\\Java\\jdk1.7.0_67 and it started working.

Answer 5

将JAVA_HOME为/cygdrive/c/Progra~1/Java/jdk1.6.0可能会有所帮助。