Maven project dependency error in eclipse using m2e plugin (for maven)

eclipse, java, m2e, maven

Solution

You have cached files in your local repository. See: `Failure to transfer commons-cli:commons-cli:jar:1.0 from http://repo.maven.apache.org/maven2 was cached in the local repository`

Try to remove either `$M2_HOME/repository` or only mentioned files from your `$M2_HOME/repository`:

- commons-cli/commons-cli*

Problem

I am working on a java maven project in eclipse using the m2e plugin. I updated my system and my jvm updated from icedtea-bin-6.1.11.4 to icedtea-bin-6.1.11.5. Eclipse now outputs the below error in my pom file and I can't run my project. I am new to maven and eclipse and, after a day of googling, I still haven't managed to find a solution for this. I personally think that this is some sort of problem with eclipse (a misconfiguration?), because I am able to get a successful build on the command line with `mvn clean install -U`. Moreover, I get the same error even on a fresh eclipse install without the plugins installed. Error: Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved: Failure to transfer commons-cli:commons-cli:jar:1.0 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact commons-cli:commons-cli:jar:1.0 from/to central (http://repo.maven.apache.org/maven2): connection timed out to http://repo.maven.apache.org/maven2/commons-cli/commons-cli/1.0/commons-cli-1.0.jar (org.apache.maven.plugins:maven-resources-plugin:2.5:resources:default-resources:process-resources) Environment details. Maven: Apache Maven 2.2.1 (r801777; 2009-08-06 20:16:01+0100) Java version: 1.6.0_24 Java home: /opt/icedtea-bin-6.1.11.5/jre Eclipse: Version: Juno Service Release 1 Build id: 20121004-1855 Plugin: m2e - Maven Integration for Eclipse 1.2.0.20120903-1050 m2e - slf4j over logback logging (Optional) 1.2.0.20120903-1050 pom.xml ``` <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema- instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.test</groupId> <artifactId>mf</artifactId> <version>0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>mf</name> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>cc.mallet</groupId> <artifactId>mallet</artifactId> <version>2.0.7-RC2</version> </dependency> <dependency> <groupId>com.googlecode.efficient-java-matrix-library</groupId> <artifactId>ejml</artifactId> <version>0.20</version> </dependency> <dependency> <groupId>jfreechart</groupId> <artifactId>jfreechart</artifactId> <version>1.0.0</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <version>2.3.1</version> <configuration> <archive> <manifestEntries> <Main-Class>lda.TMRS</Main-Class> </manifestEntries> </archive> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>1.7</version> <executions> <execution> <id>shade</id> <goals> <goal>shade</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project> ``` Does anybody have any suggestions on how to get rid of this error?

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