Failed to read artifact descriptor for org apache maven plugins maven-source-plugin jar 2 4

Question

Thanks to a Dropwizard Maven archetype I generated a sample Dropwizard Maven project  The pom xml notably uses maven-source-plugin    lt plugin gt       lt artifactId gt maven-source-plugin lt  artifactId gt       lt version gt 2 4 lt  version gt       lt executions gt           lt execution gt              lt id gt attach-sources lt  id gt              lt goals gt                 lt goal gt jar lt  goal gt              lt  goals gt           lt  execution gt       lt  executions gt   lt  plugin gt    When I run  clean install  I have the following error       Plugin org apache maven plugins maven-source-plugin 2 4 or one of its dependencies could not be resolved  Failed to read artifact descriptor for org apache maven plugins maven-source-plugin jar 2 4  Could not transfer artifact org apache maven plugins maven-source-plugin pom 2 4 from to central  http   repo maven apache org maven2   Connection refused  connect -   Help 1    The  maven-source-plugin  dependency is stored in the Nexus repository of my company  So I tried the adding of the plugin dependency between dependencies and  dependencies     lt dependencies gt               lt dependency gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-source-plugin lt  artifactId gt           lt version gt 2 4 lt  version gt       lt  dependency gt   lt  dependencies gt    but it did not correct the problem  I also tried to add the dependency at the call of the plugin      lt plugin gt       lt artifactId gt maven-source-plugin lt  artifactId gt       lt version gt 2 4 lt  version gt       lt executions gt          lt execution gt              lt id gt attach-sources lt  id gt              lt goals gt                 lt goal gt jar lt  goal gt              lt  goals gt          lt  execution gt         lt  executions gt         lt dependencies gt             lt dependency gt                 lt groupId gt org apache maven plugins lt  groupId gt                 lt artifactId gt maven-source-plugin lt  artifactId gt                 lt version gt 2 4 lt  version gt             lt  dependency gt        lt  dependencies gt    lt  plugin gt    but it did not work either

User · Answer

On my side it was coming from an error in my settings xml file  I had a bad  tag  Just removed it  refreshed and i was good to go

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I am using JDK 7 for maven project and I used -Dhttps protocols TLSv1 2 as argument in JRE  It has allowed to download all maven repository which were failing earlier

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It may happen  e g  after an interrupted download  that Maven cached a broken version of the referenced package in your local repository   Solution  Manually delete the folder of this plugin from cache  i e  your local repository   and repeat maven install   How to find the right folder  Folders in Maven repository follow the structure    lt dependency gt       lt groupId gt org apache maven plugins lt  groupId gt       lt artifactId gt maven-source-plugin lt  artifactId gt       lt version gt 2 4 lt  version gt   lt  dependency gt    is cached in   USER HOME   m2 repository org apache maven plugins maven-source-plugin 2 4

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Two possible situations     Your company uses a proxy to connect to the public Maven repository  Then ask someone in your company what the IP address of the proxy is then put it in your settings xml file Your company has its their own Maven repository ies  Nexus repository for example   Then ask someone in your company what the Nexus repository is then put it in your pom xml or in your settings xml  See Adding maven nexus repo to my pom xml and https   maven apache org guides mini guide-multiple-repositories html

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org apache maven plugins maven-source-plugin does not exist in the repository http   repo maven apache org maven2    You have to download it from Maven central where it exists     maven-source-plugin  Verify your pom definition or your settings xml file

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I use intelliJ and finally I created my own settings xml and added the following content structure to it  In my project s pom xml  the nexus repositories were defined but for some reason it was always hitting the external apache maven repo which is blocked in my company    lt settings gt     lt mirrors gt        lt id gt nexus lt  id gt        lt url gt nexusURL  lt  url gt        lt mirrorOf gt central lt  mirrorOf gt       lt mirror gt    lt profiles gt     lt profile gt       lt repositories gt         lt repository gt    lt  settings gt

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so I am assuming that this project you are doing in your private eclipse  not company provided eclipse where you work   The same problem I resolved just as below   quick fix   got to  m2 file --  create a backup of settings xml --  remove settings xml --  restart your eclipse

User · Answer

Update the apache-maven-3 5 0-bin apache-maven-3 5 0 conf settings xml file   Check your internet explorer proxy --  Setting --  Internet explorer -- Connection --  LAN Setting     lt proxy gt     lt id gt optional lt  id gt     lt active gt true lt  active gt     lt protocol gt http lt  protocol gt     lt username gt user lt  username gt     lt password gt      lt  password gt     lt host gt proxy lt  host gt     lt port gt 8080 lt  port gt   lt  proxy gt

User · Answer

Remove the content of the folder   m2 repository org apache maven plugins maven-resource-plugin 2 7  The cached info turned out to be the issue

[maven-3] Failed to read artifact descriptor for org.apache.maven.plugins:maven-source-plugin:jar:2.4

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