I'm using MyEclipse to develop a really simple Java Struts project. Everything was working fine until I wanted to use the StringUtils
class in org.apache.commons.lang. In MyEclipse I imported the package like
import org.apache.commons.lang.StringUtils;
I added the Jar file for commons-lang-2.4 to my build path. This all works fine and dandy and I get the Intellisense and no errors in Eclipse or anything. Now, when I go to do a mvn clean package
, I get an error saying that
The package org.apache.commons.lang does not exist
I checked in my war/Pom.xml file and I do have it declared as a dependency
<dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.4</version> </dependency> </dependencies>
From my research I figured that Maven should download the package and install it to my local repository if it doesn't exists. I checked the repository and the jar file was in there. I figured the jar file must be corrupted so I deleted the commons-lang folder to get a fresh download of commons-lang. Now this is where it blows my mind, after I deleted it from the local repository and ran a mvn clean package
, it goes out and downloads the commons-lang-2.1.pom and jar (even though the pom.xml has 2.4) BUT still gives a compilation failure saying that the package org.apache.commons.lang does not exist.
I haven't been using Maven for very long so I'm not sure how to go about fixing this. Am I missing something? Do I need to add the dependency in another pom.xml file somewhere else?
Try running the following commands and examine the output:
$ mvn dependency:tree $ mvn help:effective-pom
Look for commons-lang
, maybe something will draw your attention like excludes or dependency overrides. Also, is:
$ mvn dependency:copy-dependencies
copying commons-lang
JAR to your target
?
Adding following dependency to pom.xml in dependencies tag helped me:
<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.1</version> </dependency>
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With