Maven2 Missing artifact but jars are in place

Question

From now to then  my Maven 2 started to mess around   I am using SPring STS 2 6 1 and have a single project based on Spring 3  Hibernate  DWR  Cometd and all that stuff   Today I just updated from Git und all of a sudden  I got that scary mvn exclamation mark     next to my project   After hitting  Project -  Maven -  Update dependencies  I just receive   24 05 11 15 26 58 MESZ  Missing artifact org jdom jdom jar 1 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-common jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-core jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-solrj jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact stax stax jar 1 2 0 compile 24 05 11 15 26 58 MESZ  Missing artifact stax stax-api jar 1 0 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-analyzers jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-core jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-highlighter jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-queries jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-snowball jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-lucene-spellchecker jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-httpclient commons-httpclient jar 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache commons commons-io jar 1 3 2 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-logging commons-logging jar 1 0 4 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache solr solr-commons-csv jar 1 3 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache geronimo specs geronimo-stax-api 1 0 spec jar 1 0 1 compile 24 05 11 15 26 58 MESZ  Missing artifact net java dev stax-utils stax-utils jar 20040917 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache lucene lucene-snowball jar 2 4 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache lucene lucene-core jar 2 4 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org slf4j slf4j-api jar 1 6 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-expression jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-core jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-beans jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-aop jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact aopalliance aopalliance jar 1 0 compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-asm jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-aspects jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-test jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-context jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-context-support jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-tx jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-jdbc jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-orm jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-oxm jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-web jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-webmvc jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework spring-instrument jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-core jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-web jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-taglibs jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-acl jar 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-parent pom 3 0 5 RELEASE compile 24 05 11 15 26 58 MESZ  Missing artifact org springframework security spring-security-config jar 3 0 5 RELEASE system 24 05 11 15 26 58 MESZ  Missing artifact org hibernate hibernate-core jar 3 3 2 GA compile 24 05 11 15 26 58 MESZ  Missing artifact antlr antlr jar 2 7 6 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-collections commons-collections jar 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact dom4j dom4j jar 1 6 1 compile 24 05 11 15 26 58 MESZ  Missing artifact javax transaction jta jar 1 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org hibernate hibernate-annotations jar 3 4 0 GA compile 24 05 11 15 26 58 MESZ  Missing artifact org hibernate ejb3-persistence jar 1 0 2 GA compile 24 05 11 15 26 58 MESZ  Missing artifact org hibernate hibernate-commons-annotations jar 3 1 0 GA compile 24 05 11 15 26 58 MESZ  Missing artifact org hibernate ejb3-persistence pom 1 0 2 GA compile 24 05 11 15 26 58 MESZ  Missing artifact commons-dbcp commons-dbcp jar 1 4 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-pool commons-pool jar 1 5 4 compile 24 05 11 15 26 58 MESZ  Missing artifact org aspectj aspectjweaver jar 1 6 10 compile 24 05 11 15 26 58 MESZ  Missing artifact org slf4j slf4j-log4j12 jar 1 6 1 compile 24 05 11 15 26 58 MESZ  Missing artifact log4j log4j jar 1 2 16 compile 24 05 11 15 26 58 MESZ  Missing artifact javax persistence persistence-api jar 1 0 compile 24 05 11 15 26 58 MESZ  Missing artifact javassist javassist jar 3 12 1 GA compile 24 05 11 15 26 58 MESZ  Missing artifact postgresql postgresql jar 9 0-801 jdbc4 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-codec commons-codec jar 1 4 compile 24 05 11 15 26 58 MESZ  Missing artifact org directwebremoting dwr jar 2 0 3 compile 24 05 11 15 26 58 MESZ  Missing artifact org beanshell bsh jar 2 0b4 compile 24 05 11 15 26 58 MESZ  Missing artifact org jasypt jasypt jar 1 7 compile 24 05 11 15 26 58 MESZ  Missing artifact cglib cglib jar 2 2 compile 24 05 11 15 26 58 MESZ  Missing artifact asm asm jar 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-fileupload commons-fileupload jar 1 2 2 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache poi poi jar 3 8-beta1 compile 24 05 11 15 26 58 MESZ  Missing artifact jasperreports jasperreports jar 3 5 3 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-beanutils commons-beanutils jar 1 8 0 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-digester commons-digester jar 1 7 compile 24 05 11 15 26 58 MESZ  Missing artifact jfree jcommon jar 1 0 15 compile 24 05 11 15 26 58 MESZ  Missing artifact jfree jfreechart jar 1 0 12 compile 24 05 11 15 26 58 MESZ  Missing artifact xml-apis xml-apis jar 1 3 02 compile 24 05 11 15 26 58 MESZ  Missing artifact eclipse jdtcore jar 3 1 0 compile 24 05 11 15 26 58 MESZ  Missing artifact junit junit jar 4 8 2 test 24 05 11 15 26 58 MESZ  Missing artifact org easymock easymock jar 3 0 test 24 05 11 15 26 58 MESZ  Missing artifact cglib cglib-nodep jar 2 2 test 24 05 11 15 26 58 MESZ  Missing artifact org objenesis objenesis jar 1 2 test 24 05 11 15 26 58 MESZ  Missing artifact net sf ehcache ehcache pom 2 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact net sf ehcache ehcache-core jar 2 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact net sf ehcache ehcache-terracotta jar 2 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org opensymphony quartz quartz-all jar 1 6 1 compile 24 05 11 15 26 58 MESZ  Missing artifact javax servlet jstl jar 1 1 2 compile 24 05 11 15 26 58 MESZ  Missing artifact taglibs standard jar 1 1 2 compile 24 05 11 15 26 58 MESZ  Missing artifact org aspectj aspectjrt jar 1 6 5 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache velocity velocity jar 1 6 2 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-lang commons-lang jar 2 4 compile 24 05 11 15 26 58 MESZ  Missing artifact oro oro jar 2 0 8 compile 24 05 11 15 26 58 MESZ  Missing artifact javax mail mail jar 1 4 1 compile 24 05 11 15 26 58 MESZ  Missing artifact javax activation activation jar 1 1 compile 24 05 11 15 26 58 MESZ  Missing artifact com lowagie itext jar 2 0 7 compile 24 05 11 15 26 58 MESZ  Missing artifact bouncycastle bcmail-jdk14 jar 138 compile 24 05 11 15 26 58 MESZ  Missing artifact bouncycastle bcprov-jdk14 jar 138 compile 24 05 11 15 26 58 MESZ  Missing artifact org cometd java cometd-java-server jar 1 0 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org cometd java cometd-api jar 1 0 1 compile 24 05 11 15 26 58 MESZ  Missing artifact org eclipse jetty jetty-util jar 7 0 1 v20091125 compile 24 05 11 15 26 58 MESZ  Missing artifact org eclipse jetty jetty-continuation jar 7 0 1 v20091125 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache velocity velocity-tools jar 2 0 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-chain commons-chain jar 1 1 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-validator commons-validator jar 1 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact sslext sslext jar 1 2-0 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache struts struts-core jar 1 3 8 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache struts struts-taglib jar 1 3 8 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache struts struts-tiles jar 1 3 8 compile 24 05 11 15 26 58 MESZ  Missing artifact net htmlparser jericho jericho-html jar 3 1 compile 24 05 11 15 26 58 MESZ  Missing artifact ro isdc wro4j wro4j-core jar 1 3 3 compile 24 05 11 15 26 58 MESZ  Missing artifact commons-io commons-io jar 2 0 compile 24 05 11 15 26 58 MESZ  Missing artifact com google collections google-collections jar 1 0 compile 24 05 11 15 26 58 MESZ  Missing artifact javax servlet servlet-api jar 2 5 compile 24 05 11 15 26 58 MESZ  Missing artifact redis clients jedis jar 1 5 2 compile 24 05 11 15 26 58 MESZ  Missing artifact org mongodb mongo-java-driver jar 2 5 2 compile 24 05 11 15 26 58 MESZ  Missing artifact org xhtmlrenderer core-renderer jar R8pre2 compile 24 05 11 15 26 58 MESZ  Missing artifact org apache sanselan sanselan jar 0 97-incubator compile 24 05 11 15 26 58 MESZ  Missing artifact com kenai nbpwr com-sun-pdfview jar 1 0 5-201003191900 compile 24 05 11 15 26 58 MESZ  Missing artifact org swinglabs pdf-renderer jar 1 0 5 compile 24 05 11 15 26 58 MESZ  Missing artifact org safehaus jug jug jar 2 0 0 system 24 05 11 15 26 58 MESZ  Missing artifact de dankomannhaupt JDBCAppender jar 1 0 system 24 05 11 15 26 58 MESZ  Missing artifact spy memcahed jar 2 5 system 24 05 11 15 26 58 MESZ  Missing artifact net sf beanlib beanlib jar 5 0 2beta compile 24 05 11 15 26 58 MESZ  Missing artifact xstream xstream jar 1 1 2 compile 24 05 11 15 26 58 MESZ  Missing artifact net jcip jcip-annotations jar 1 0 compile 24 05 11 15 26 58 MESZ  Missing artifact net sf beanlib beanlib-hibernate jar 5 0 2beta compile   My pom xml looks like    lt properties gt           lt org springframework version gt 3 0 5 RELEASE lt  org springframework version gt           lt hibernate version gt 3 3 2 GA lt  hibernate version gt       lt  properties gt        lt repositories gt           lt repository gt               lt id gt JBoss lt  id gt               lt name gt JBoss Repsitory lt  name gt               lt layout gt default lt  layout gt               lt url gt http   repository jboss org maven2 lt  url gt           lt  repository gt       lt  repositories gt       lt  -- Bezeichnung -- gt       lt artifactId gt project-dao lt  artifactId gt       lt name gt Vevention Dao lt  name gt       lt groupId gt com corp dao lt  groupId gt       lt version gt 1 0Beta lt  version gt        lt dependencies gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-expression lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-beans lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-aop lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-aspects lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-context lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-context-support lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-tx lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-jdbc lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-orm lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-oxm lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-web lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt             lt groupId gt org springframework lt  groupId gt             lt artifactId gt spring-webmvc lt  artifactId gt             lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt                lt groupId gt org springframework lt  groupId gt               lt artifactId gt spring-instrument lt  artifactId gt               lt version gt   org springframework version  lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org springframework security lt  groupId gt               lt artifactId gt spring-security-core lt  artifactId gt               lt version gt   org springframework version  lt  version gt            lt  dependency gt            lt dependency gt               lt groupId gt org springframework security lt  groupId gt               lt artifactId gt spring-security-web lt  artifactId gt               lt version gt   org springframework version  lt  version gt            lt  dependency gt            lt dependency gt               lt groupId gt org springframework security lt  groupId gt               lt artifactId gt spring-security-taglibs lt  artifactId gt               lt version gt   org springframework version  lt  version gt            lt  dependency gt           lt dependency gt                lt groupId gt org springframework security lt  groupId gt               lt artifactId gt spring-security-config lt  artifactId gt               lt version gt   org springframework version  lt  version gt               lt scope gt system lt  scope gt                lt systemPath gt   basedir  lib spring-security-config-3 0 5 RELEASE jar lt  systemPath gt            lt  dependency gt            lt dependency gt               lt groupId gt javax servlet lt  groupId gt               lt artifactId gt servlet-api lt  artifactId gt               lt version gt 2 5 lt  version gt           lt  dependency gt                     lt dependency gt               lt groupId gt org hibernate lt  groupId gt               lt artifactId gt hibernate-core lt  artifactId gt               lt version gt   hibernate version  lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org hibernate lt  groupId gt               lt artifactId gt hibernate-annotations lt  artifactId gt               lt version gt 3 4 0 GA lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org hibernate lt  groupId gt               lt artifactId gt ejb3-persistence lt  artifactId gt               lt version gt 1 0 2 GA lt  version gt               lt type gt pom lt  type gt           lt  dependency gt   lt dependency gt               lt groupId gt org slf4j lt  groupId gt               lt artifactId gt slf4j-log4j12 lt  artifactId gt               lt version gt 1 6 1 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt commons-logging lt  groupId gt               lt artifactId gt commons-logging lt  artifactId gt               lt version gt 1 1 1 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt commons-dbcp lt  groupId gt               lt artifactId gt commons-dbcp lt  artifactId gt               lt version gt 1 4 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt jdom lt  groupId gt               lt artifactId gt jdom lt  artifactId gt               lt version gt 1 1 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt commons-lang lt  groupId gt               lt artifactId gt commons-lang lt  artifactId gt               lt version gt 2 4 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org hibernate lt  groupId gt               lt artifactId gt hibernate-search lt  artifactId gt               lt version gt 3 1 0 GA lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org apache solr lt  groupId gt               lt artifactId gt solr-common lt  artifactId gt               lt version gt 1 3 0 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org apache solr lt  groupId gt               lt artifactId gt solr-core lt  artifactId gt               lt version gt 1 3 0 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org apache lucene lt  groupId gt               lt artifactId gt lucene-snowball lt  artifactId gt               lt version gt 2 4 1 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt javax transaction lt  groupId gt               lt artifactId gt jta lt  artifactId gt               lt version gt 1 0 1B lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt junit lt  groupId gt               lt artifactId gt junit lt  artifactId gt               lt version gt 4 4 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org springframework lt  groupId gt               lt artifactId gt spring-test lt  artifactId gt               lt version gt 2 5 6 SEC01 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt memcached lt  groupId gt               lt artifactId gt memcached lt  artifactId gt               lt version gt 2 3 1 lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt org aspectj lt  groupId gt               lt artifactId gt aspectjrt lt  artifactId gt               lt version gt 1 6 5 lt  version gt           lt  dependency gt            lt dependency gt               lt groupId gt redis clients lt  groupId gt               lt artifactId gt jedis lt  artifactId gt               lt version gt 1 5 2 lt  version gt           lt  dependency gt                   lt dependency gt               lt groupId gt voldemort lt  groupId gt               lt artifactId gt voldemort lt  artifactId gt               lt version gt 0 81 lt  version gt           lt  dependency gt        lt  dependencies gt   lt  project gt    I then checked on my Mac  Users XYZ  m2 and all jar files are in place as expected   I am using the current Maven release shipped with STS  I also enabled debug output but there was nothing suspicious

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I faced this problem a couple of times  The following solution worked for me    copy the existing pom file as a back up  and delete the dependency that s causing this error  delete the contents of the folder which this artifact is referring to  add the deleted dependency in the pom again and add the jar files in that folder  do a Maven- update Project  The errors will go away    As a side note  sometimes when you re copying files from some other computer there may be encryption

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I have tried many tips but the only one that works is this one  Update the Maven configuration  Right-click on pom xml  Run as -  Maven build  the 2nd one   Enter  clean package  in the Goals fields  Check the Skip Tests box  Then Run  it will properly download all the jars and the problem is fixed

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Finally  it turned out to be a missing artifact of solr that seemed to block all the rest of my build cycle   I have no idea why mvn behaves like that  but upgrading to the latest version fixed it

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The following steps worked for me  1  Cut all the contents from pom xml file and keep it another file and save the pom xml  2  Just delete  m2 folder entire maven repository  and restart the eclipse or jbdevstudio   3  paste the previous pom xml file content from the cut file  and all the error are gone

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I was getting a similar problem with SBT and slf4j  Nothing had changed  but on one machine it suddenly wouldn t build   I tried    sbt clean deleting target  deleting project working directory and doing a fresh checkout build deleting the    sbt  lt scala-version gt   folder deleting the offending slf4j folder from the    ivy2 cache placing the missing slf4j jars in the expected ivy2 folder   None of the above worked   So  I had to bite the bullet and delete my entire    ivy2  cache folder and wait for 2GB of dependencies to be downloaded again  I m not familiar with what sort of cache manifests get written in there  but this must have been a corruption of one of them    using SBT 2 10 4 for Spark builds

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When I copied from maven repository  there was 4th row called  lt type gt   When I removed this  lt type gt   it solved my error

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None of the solutions above worked for me   I had to delete all my maven local repository  Right click Project -  Maven -  Update Project  And FIXED

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I was facing the same issue and below step removed all these errors     Right click Project -  Maven -  Update Project

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I used the below code in pom xml to download the jar   lt dependency gt               lt groupId gt javax validation lt  groupId gt               lt artifactId gt validation-api lt  artifactId gt               lt version gt 1 1 0 FINAL lt  version gt   lt  dependency gt    But in the  m2 folder under validation folder   the jar didnt get downloaded  I am not sure about the issue  But i downloaded the same jar from maven official website and placed in the  m2 folder under respective folder and cleaned the project  The error gone and it started working now

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After not much success with any of the answers available here so far   My solution   I downloaded the jar file manually and then installed the dependency by using Apache Maven install install-file plugin  see more details here    A Full Example    lt dependency gt        lt groupId gt commons-net lt  groupId gt        lt artifactId gt commons-net lt  artifactId gt        lt version gt 3 4 lt  version gt   lt  dependency gt     Download jar file from here  Install it by using the following command    mvn -X install install-file   -DgroupId commons-net   -DartifactId commons-net   -Dversion 3 4   -Dpackaging jar   -Dfile  your full downloads path  commons-net-3 4 jar    Click on the project and select Maven- Update Project

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Wow  this had me tearing my hair out  banging my head against walls  tables and other things  I had the same or a similar issue as the OP where it was either missing   not downloading the jar files or downloading them  but not including them in the Maven dependencies with the same error message  My limited knowledge of java packaging and maven probably didn t help   For me the problem seems to have been caused by the Dependency Type  bundle    but I don t know how or why   I was using the Add Dependency dialog in Eclipse Mars on the pom xml  which allows you to search and browse the central repository  I was searching and adding a dependency to jackson-core libraries  picking the latest version  available as a bundle  This kept failing   So finally  I changed the dependency properties form bundle to jar  again using the dependency properties window   which finally downloaded and referenced the dependencies properly after saving the changes

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I have seen a bug that manifested as  Error installing artifact  File    null     does not exist   that is  the file was not found because there was  null  in the path   The reason was that one environment variable was not visible to maven  It was   JV SRCROOT  DIRECTORY   instead of  export JV SRCROOT  DIRECTORY    in the latter case the variable is visible to child processes

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My problem  I forgot to import a newly added project  added by my co-worker  into my eclipse workspace   File   Import   Maven   Existing Maven Projects  find it in the dir-tree  check the single non-ghosted one which is not already added   Details  My co-worker had added a new project which was a git submodule  Existing projects referred to it in their pom xml  I had already done  git submodule init  and  git submodule update   mvn built fine from the command-line but I kept getting this  Missing artifact  error in eclipse pointing at the top of my pom xml

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Ohh what a mess  My advise  When its comes to messy poms or project packaging  Eclipse is really bad at showing the real problem  It will tell you some dependencies are missing  when in fact for pom is malformed or some other problem are present in your pom    Leave Eclipse alone are run a maven install  You will get to the real problem really quick

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I had the similar problem  Just after adding below dependency   lt dependency gt       lt groupId gt xerces lt  groupId gt       lt artifactId gt xercesImpl lt  artifactId gt       lt version gt 2 9 1 lt  version gt       lt type gt bundle lt  type gt   lt  dependency gt    caused the problem  I deleted that dependency even then I m getting the same error  I don t know what happened  I tried updating the maven dependency configuration which solved my issue

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I received this same issue on SpringSource Tools ver 2 8 0 RELEASE  I had to do Maven -  Update Maven Dependencies and check the option for  Force Update of Snapshot Releases

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There are a few other options apart from Project- Clean  some of which are more along the lines of turning it off and on again     Try right-clicking on the project and selecting Maven- Update Project Configuration  Disable then re-enable dependency management  right-click Maven- Disable Dependency Management then Maven- Enable Dependency Management Close the project and reopen it  Check that your Maven settings are configured correctly  If you are behind a proxy you ll need to configure the proxy settings in the global or user settings  Check you re using the Maven installation you expect  By default m2eclipse uses the embedder  if you have a separate installation you may want to configure m2eclipse to use the external installation so that CLI and Eclipse builds are consistent  This also ensures you re configured to connect through any proxy as above

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If the other solutions didn t work and you know the correct jars are in your repository then  The problem is that eclipse caches the errors for some reason   I solved this problem by deleting the errors in the Problems tab and then I refreshed the project explorer and all the exclamation points and errors never returned

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Just in order to provide one more possible solution  In my case  I removed  central  from  m2 jdom jdom 1 0 settings  and did everything else  without results    So I discovered my settings xml in   m2 folder was stuck by a failed process  As I didn t found the process in the system task manager  I restarted the computer and it worked

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I had similar problem  it was showing error  Missing artifact        After digging in  I found that I have proxy settings enabled which should be configured  proxyname  user pwd  in setting xml inside conf folder of Maven  As a resolution go to Eclipse    Windows- gt preferences- gt Maven- gt UserSettings    and update the user setting to point the setting xml which you have inside conf folder of Maven  After that go to Project- gt Update All Maven Dependencies  It should work fine after the build

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If nothing else works which was the case for me  in the problems view  right click and copy the errors and paste it in a text editor  And scroll down to see if there are other errors besides just the missing artifact    Eclipse problems view only shows about 100 errors and the errors that are not visible might be the ones that s causing all the other missing artifact errors   Once I saw all the errors  I was able to figure out what the issue was and fixed it

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I encountered similar issue  The missing artifacts  jar files  exists in    m2 directory and somehow eclipse is unable to find it    For example  Missing artifact org jdom jdom jar 1 1 compile  I looked through this directory    m2 repository org jdom jdom 1 1 and I noticed there is this file  maven repositories  I opened it using text editor and saw the following entry    NOTE  This is an internal implementation file  its format can be changed without prior notice   Wed Feb 13 17 12 29 SGT 2013 jdom-1 1 jar gt central  jdom-1 1 pom gt central    I simply removed the  central  word from the file    NOTE  This is an internal implementation file  its format can be changed without prior notice   Wed Feb 13 17 12 29 SGT 2013 jdom-1 1 jar gt   jdom-1 1 pom gt     and run Maven   Update Project from eclipse and it just worked    Note that your file may contain other keyword instead of  central

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I had the same problem  maven was complaining about a missing artifact  even though it existed in  m2 repository        In my case the problem was that I forgot to specify the correct repository in the pom xml from which the package was downloaded originally  download by another project    Adding the package repository to the pom xml solved the problem    lt repositories gt     lt repository gt       lt id gt SomeName lt  id gt       lt name gt SomeName lt  name gt       lt url gt http   url to repo lt  url gt     lt  repository gt   lt  repositories gt    Thanks Maximilianus for the hint to those    repositories  files in the package directory

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sudo eclipse   The issue for me was related to  maximilianus s question - in that eclipse was unable to locate the artifacts on my machine    Turns out all I had to do was run ubuntu as super user  and eclipse could access the  root  m2  directory   Not sure this is good practice  but it solved a problem I ve spent hours on    Edit  This is not definitely good practice  instead I setup my environment all over again  as a normal user rather than root  and it worked fine   Learning Linux

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I had the same problem  Rich Seller s solution didn t work for my situation  I fixed it by cancel the Window - gt  Preferences - gt  Maven  Do not automatically update dependencies from remote repositories option  then right-clicking on the project and selecting Maven- gt Update Project

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i download the missing jar and placed in the  m2 repository fixed the problem

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I was facing the same error with Spring Boot dependencies  What solved for me was letting Maven resolve the dependencies wrapping them with dependency management    lt parent gt       lt groupId gt org springframework boot lt  groupId gt       lt artifactId gt spring-boot-starter-parent lt  artifactId gt       lt version gt 1 3 0 RELEASE lt  version gt   lt  parent gt    lt dependencyManagement gt       lt dependencies gt         lt dependency gt     lt  dependency gt                 lt  dependencies gt   lt  dependencyManagement gt

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My case following procedure solve the issue   1-   2- check the active profile

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After running eclipse clean eclipse eclipse its worked for me

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I tried all of the above solutions except manually installing jar in my repository   By deleting the  remote repositories file in the same directory as the  missing jar file  and doing maven update I got it to work   This is the same end result as manually installing  I presume

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M2Eclipse sometimes does that  Select Project  gt  Clean     from the Menu and everything will be fine after the rebuild

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I had a similar solution like  maximilianus  The difference was that my  repositories files were called  remote repositores and I had to delete them to make it work   For eg in my case I deleted   C  Users USERNAME m2 repository jta jta 1 0 1 remote repositories and C  Users USERNAME m2 repository jndi jndi 1 2 1 remote repositories   After doing so my errors disappeared

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As i tried all above as my friends said but nothing worked actually  I was facing same problem and found solution in some different way my issue starts when i added below repository   lt dependency gt     lt groupId gt dom4j lt  groupId gt     lt artifactId gt dom4j lt  artifactId gt     lt version gt 20040902 021138 lt  version gt   lt  dependency gt    and my problem starts   so then i changed the version and took previous version and it removed all error  So i think this issue can because of the version we are adding in POM xml file

[eclipse] Maven2: Missing artifact but jars are in place

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