How to force maven update

Question

I imported my already working project on another computer and it started to download dependencies     Apparently my internet connection crashed and now I get the following        gt Build errors for comics  org apache maven lifecycle LifecycleExecutionException      Failed to execute goal on project comicsTest  Could not resolve dependencies for project comicsTest comicsTest war 0 0 1-SNAPSHOT      The following artifacts could not be resolved      org springframework spring-context jar 3 0 5 RELEASE      org hibernate hibernate-entitymanager jar 3 6 0 Final      org hibernate hibernate-core jar 3 6 0 Final      org hibernate hibernate-commons-annotations jar 3 2 0 Final      org aspectj aspectjweaver jar 1 6 8      commons-lang commons-lang jar 2 5        gt mysql mysql-connector-java jar 5 1 13  Failure to transfer org springframework spring-context jar 3 0 5 RELEASE from http   repo1 maven 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        gt Original error  Could not transfer artifact org springframework spring-context jar 3 0 5 RELEASE from central  http   repo1 maven org maven2   No response received after 60000   How do I force maven to update

User · Answer

mvn clean install -U doesn t work  However mvn -U clean followed by mvn clean install does

User · Answer

You can do effectively from Eclipse IDE  Of course if you are using it   Project Name- gt Maven- gt Update Project Configuration- gt Force Update of Snapshots Releases

User · Answer

If you are using eclipse IDE then      Select Project     Press alt F5  window for Update Maven Project will pop up  Check - Force Update of Snapshots releases and click OK    If Using Intellij IDE   go to settings Maven check Always update snapshots

User · Answer

I tried all the answers here but nothing seemed to work  Restarted my computer first then ran mvn clean install -U   That solved my problem

User · Answer

For fixing this issue from Eclipse   1  Add below dependency in Maven pom xml and save the pom xml file    lt  -- https   mvnrepository com artifact com thoughtworks xstream xstream -- gt   lt dependency gt       lt groupId gt com thoughtworks xstream lt  groupId gt       lt artifactId gt xstream lt  artifactId gt       lt version gt 1 3 1 lt  version gt   lt  dependency gt    2  Go to project    Maven    Update Project  select the project and click OK   3  Optional step  if it s not resolved till step 2 then do below step after doing step-1  Go to project    Maven    Update Project    check in the checkbox  Force Update of Snapshots Releases   select the project and click OK

User · Answer

It s important to add that the main difference of running mvn with -U and without -U is that -U will override your local SNAPSHOT jars with remote SNAPSHOT jars    Local SNAPSHOT jars created from local mvn install in cases where you have other modules of your proj that generate jars

User · Answer

What maven does is  it downloads all your project s dependencies into your local repo   m2 folder   Because of the internet causing issues with your local repo  you project is facing problems  I am not sure if this will surely help you or not but you can try deleting all the files within the repository folder inside the  m2 folder  Since there would be nothing in the local repo  maven would be forced to download the dependencies again  thus forcing an update   Generally  the  m2 folder is located at c users  username   m2

User · Answer

If your local repository is somehow mucked up for release jars as opposed to snapshots  -U and --update-snapshots only update snapshots   you can purge the local repo using the following    mvn dependency purge-local-repository   You probably then want to clean and install again    mvn dependency purge-local-repository clean install   Lots more info available at https   maven apache org plugins maven-dependency-plugin examples purging-local-repository html

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I ve got the same error with android-maps-utils dependency  Using aar type package in dependency section solve my problem   By default type is jar so It might be checked what type of dependency in repository is downloaded

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This is one of the most annoying things about Maven  For me the following happens  If I add a dependency requesting more dependencies and more and more but have a slow connection  it seams to stop while downloading and timing out  While timing out all dependencies not yet fetched are marked with place holders in the  m2 cache and Maven will not  never  pick it up unless I remove the place holder entry from the cache  as other stated  by removing it   So as far as I see it  Maven or more precise the Eclipse Maven plugin has a bug regarding this  Someone should report this

User · Answer

You need to check your settings xml file under  lt maven home gt  conf directory

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Just in case someone wants only update project s snapshot dependencies and doesn t want to install artifact   mvn dependency resolve -U   Don t forget to reimport dependencies in your IDE  In IDEA you need to right click on pom file and choose Maven -  Reimport

User · Answer

-U seems to force update of all dependencies    If you want to update a single dependency without clean or -U you could just remove it from your local repo and then build    The example below if for updating slf4j-api 1 7 1-SNAPSHOT   rm -rf    m2 repository org slf4j slf4j-api 1 7 1-SNAPSHOT mvn compile

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If you re unsure what is inside your local repository  I recommend to fire a build with the option   -Dmaven repo local localrepo   That way you ll ensure to build in a cleanroom environment

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I ve got the error in an other context  So my solution might be useful to others who stumple upon the question   The problem  I ve copied the local repository to another computer  which has no connection to a special repository  So maven tried to check the artifacts against the invalid repository   My solution  Remove the  maven repositories files

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I had the same error and running mvn install -U and then running mvn install worked for me

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I had this problem for a different reason   I went to the maven repository https   mvnrepository com looking for the latest version of spring core  which at the time was 5 0 0 M3   The repository showed me this entry for my pom xml    lt  -- https   mvnrepository com artifact org springframework spring-core -- gt   lt dependency gt       lt groupId gt org springframework lt  groupId gt       lt artifactId gt spring-core lt  artifactId gt       lt version gt 5 0 0 M3 lt  version gt   lt  dependency gt    Naive fool that I am  I assumed that the comment was telling me that the jar is located in the default repository     However  after a lot of head-banging  I saw a note just  below the xml saying  Note  this artifact it located at Alfresco Public repository  https   artifacts alfresco com nexus content repositories public     So the comment in the XML is completely misleading   The jar is located in another archive  which was why Maven couldn t find it

User · Answer

I ran into this recently and running the following fixed all the problems  mvn -fae install

User · Answer

-U is used to force update maven Repo  Use  mvn -U clean install

User · Answer

mvn clean install -U   -U means force update of snapshot dependencies   Release dependencies can t be updated this way

User · Answer

Previous versions of maven did not force the check for missing releases when used -U with mvn clean install  only the snapshots  though newer version supports this    For someone still struggling with previous version  following can be helpful-  On Windows   cd  userprofile   m2 repository for  r  i in    lastUpdated  do del  i   On Linux   find    m2  -name    lastUpdated  -exec grep -q  Could not transfer        -print -exec rm         Whenever maven can t download dependencies for any reason  connectivity not exists etc   it will add the   error Could not transfer artifact  in dependency-name lastUpdate file in respective folder under  home  m2 directory  Removing these files will force maven to try fetching the dependencies again

User · Answer

We can force to get latest update of release and snapshot repository with below command    mvn --update-snapshots clean install

User · Answer

All the answers here didn t work for me  I used the hammer method    find    m2  -name    lastUpdated    xargs rm   That fixed the problem  -

User · Answer

I used the IntelliJ IDE and I had a similar problem and to solve I clicked in  Generate Sources and Update Folders for All Projects  in Maven tab

User · Answer

In my case first I did was    mvn clean install -U   Still it was showing same error then I closed project and again reopened it  Finally worked

[maven] How to force maven update?

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