无法在Windows上安装Maven：“JAVA_HOME设置为无效目录”

Question

I followed the Maven tutorial to the letter but I still can't get Maven installed on Windows.

When I run the following in command prompt:

E:\Documents and Settings\zach>mvn --version

I get:

'mvn' is not recognized as an internal or external command, operable program or batch file.

I navigated to the maven install folder and ran mvn --version and got:

E:\java resources\apache-maven-2.2.0\bin>mvn --version
ERROR: JAVA_HOME is set to an invalid directory.
JAVA_HOME = "E:\Sun\SDK\jdk\bin"
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation

but when I run java -version I get:

java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode)

So I do have Java installed. Anyone know what the problem is?

Answer 1

The problems are to do with your paths.

1. Make sure that the directory "E:\\java resources\\apache-maven-2.2.0\\bin" is on your command search path.

2. Make sure that the JAVA_HOME variable refers to the home directory for your Java installation. If you are executing Java from "E:\\Sun\\SDK\\jdk\\bin", then the JAVA_HOME variable needs to point to "E:\\Sun\\SDK\\jdk".

   NB: JAVA_HOME should NOT end with "\\bin" ¹ .

3. Make sure that you haven't put a semicolon in the JAVA_HOME variable ² .

   NB: JAVA_HOME should be a single directory name, not "PATH-like" list of directory names separated by semicolons.

Also note that you could run into problems if you have ignored this advice in the Maven on Windows instructions about spaces in key pathnames.

"Maven, like many cross-platform tools, can encounter problems when there are space characters in important pathnames ."

"You need to install the Java SDK (eg from Oracle's download site), and you should install it to a pathname without spaces , such as c:\\j2se1.6."'

"You need to unpack the Maven distribution. Don't unpack it in the middle of your source code; pick some location ( with no spaces in the path! ) and unpack it there."

The simple remedy for this would be to reinstall Java or Maven in a different location so that there isn't a space in the path

---

^{1 - .... unless you have made an insane choice for the name for your installation location.}

^{2 - Apparently a common "voodoo" solution to Windows path problems is to whack a semicolon on the end. It is not recommended in general, absolutely does not work here.}

Answer 2

ERROR: JAVA_HOME is set to an invalid directory. JAVA_HOME = "E:\\Sun\\SDK\\jdk\\bin" Please set the JAVA_HOME variable in your environment to match the location of your Java installation

JAVA_HOME should be set to E:\\Sun\\SDK\\jdk . PATH should be set to include %JAVA_HOME%\\bin .

Answer 3

I ran into this issue with a Grails install.

The problem was my JAVA_HOME was c:\\sun\\jdk\\ and my PATH has %JAVA_HOME%bin

I changed it to: JAVA_HOME= "c:\\sun\\jdk" and PATH="%JAVA_HOME%\\bin"

It worked after that.

Answer 4

I was facing the same issue and just updated the JAVA_HOME worked for me.

previously it was like this: C:\\Program Files\\Java\\jdk1.6.0_45\\bin Just removed the \\bin and it worked for me.

Answer 5

Due to security restrictions at my current place of work I was unable to set enviroment variables on my Windows based PC.

My workaround was to copy the mvn.bat file from %M2% into C:\\WINNT and add the following to the top of the batch file:

@REM Needed as unable to set env variables on my desktop PC.

set MAVEN_OPTS=-Xms256m -Xmx1024m
set M2_HOME=C:\apache-maven-3.0.4
set M2=%M2_HOME%\bin
set JAVA_HOME=C:\Program Files\Java\jdk1.5.0_15
set PATH=%JAVA_HOME%\bin;%M2%;%PATH%

Not the nicest solution but it works. If anybody has any other way or work-around where the standard env vars are not able to be set into the system I'd welcome their response.

Answer 6

I had the same issue and none of the above answers fixed it for me because my env variables were all set. I had just reinstalled my Java.

What worked was to

1. go to the C:\\path\\to\\apache-maven-3.0.4\\bin and open the mvn.bat file.
2. Find the line that looks like this @SET JAVA_HOME=C:\\progra~1\\java\\jdk1.7.0_03
3. Correct it to the right path

I don't know if this is Windows specific, but it might help someone!

Answer 7

After lot of failed tried attempts ,I found the solution

It was the ";" at end of JAVA_HOME which I always put at end of each new variable I set. So get rid of the ;.

JAVA_HOME set it in User Variable also (without the ";" ofcourse)

Answer 8

你应该设置没有bin目录的JAVA_HOME或MAVEN_HOME，例如： - JAVA_HOME = C：\\ Program Files（x86）\\ Java \\ jdk1.7.0_45 - MAVEN_HOME = C：\\ Program Files（x86）\\ apache-maven-3.1.1 now path = .....;％MAVEN_HOME％\\ bin;％JAVA_HOME％\\ bin它正常工作

Answer 9

Sometimes in Windows whitespaces in paths are not recognized correctly

If you have a path problem and path seems like

c:\\Program Files\\....

try changing it in an old DOS format like

"C:\\Progra~1\\...

You can use dir /x to check correct syntax (third column)

C:\\>dir /x ... 11.01.2008 15:47 <DIR> DOCUME~1 Documents and Settings 01.12.2006 09:10 <DIR> MYPROJ~1 My Projects 21.01.2011 14:08 <DIR> PROGRA~1 Program Files ...

In my pc JAVA_HOME is (and it works)

"C:\\Progra~1\\Java\\jdk1.8.0_121"

Tested in Windows 10

Answer 10

JAVA_HOME should be like this C:\\PROGRA~1\\Java\\jdk

Hope this will work!

Answer 11

This seems to be old post but still I wanted to share how this issue got fixed for me.

For users, who do not have admin access and when they open a command prompt, it runs under the user privilege. It means, you may have path like C:\\Users\\

so when trying C:\\Users\\XYZ>mvn --version , it actually search the JAVA_HOME path from user variables not system variables in Environment Variables.

So, In order to fix this, we need to create a environment variable for JAVA_HOME in user variables.

Hope, this helps someone.

Answer 12

Running eclipse and also running Maven will require you to store two path variables, one in your jdk1.7_x_x_x location and also in your jdk1.7_x_x_\\bin. If you are using Windows, when you are in your environment variables, do the following:

1) create a USER variable called JAVA_HOME. Point this to the location of your JAVA file. For example: "C:\\Program Files\\Java\\jdk1.7.0_51" (remove the quotes)

2) under the PATH, append %JAVA_HOME% to the PATH. This will add the file location from step 1 to your PATH. This is good for MAVEN

3) if you are using eclipse you need to have the path point to "C:\\Program Files\\Java\\jdk1.7.0_51\\bin". Now append %JAVA_HOME%\\bin to the end of your path.

4) your path should look something like this: C:\\Program Files (x86)\\Google\\google_appengine\\;C:\\Users\\username\\AppData\\Roaming\\npm;%M2%;%JAVA_HOME%;%JAVA_HOME%\\bin

Notes: the items that are enclosed in %'s like %M2% are assigned variables. It looks redundant but necessary. You can confirm that everything works by typing in:

java -version
javac -version
mvn -version

Each of those three statements typed in comman prompt should not return errors.

Answer 13

using windows 10

I was facing issue .. then I removed JAVA_HOME variable completly and just added %JAVA_HOME%\\bin in PATH then it worked!!! for mee

Answer 14

The JDK has switched locations of java.exe between 1.6 and 1.7!!!

In my case I found that the JAVA_HOME for the JDK had to add the \\jre on the end. The mvn bat file is looking for java.exe and it looks for it in JAVA_HOME\\bin. Its not there for JDK 1.7; it is in JAVA_HOME\\jre\\bin. In JDK 1.6 such it IS in JAVA_HOME\\bin.

Hope this helps somebody.

Answer 15

My situation was a bit different.

• JAVA_HOME was set properly to point to 1.7
• Other Maven projects were working/building fine with 1.7 features.
• PATH was set properly.
• Everything was up-to-date.

Still my simple new Maven project was not working. What I noticed was the difference in the logs when I ran mvn clean install . For my older Maven projects, it showed

[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ oldProject---

But for my new project it showed:

[INFO] --- maven-compiler-plugin:2.0.2:compile (default-compile) @ newProject ---

So, I looked at the POM.xml and noticed this thing in the old project's POM:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.3.2</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

Basically, this plugin tells which compiler version to use for compilation. Just added it to the new project's POM.xml and things worked.

Hope it is useful to someone.

Answer 16

I am using Windows 7, the problem I had was simple:

I had this for my JAVA_HOME environment variable value:

"C:\Program Files\Java\jdk1.7.0_51;"

when it wants:

"C:\Program Files\Java\jdk1.7.0_51"

the semi-colon strikes again!

:)

This is how I solved this problem, so this should be one possible solution.