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问题:
I am trying to set up a project using Maven (m2eclipse), but I get this error in Eclipse:
Description Resource Path Location Type
Could not calculate build plan: Failure to transfer org.apache.maven.plugins:maven-compiler-plugin:pom:2.0.2 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. Original error: Could not transfer artifact org.apache.maven.plugins:maven-compiler-plugin:pom:2.0.2 from/to central (http://repo1.maven.org/maven2): No response received after 60000 ExampleProject Unknown Maven Problem
Any ideas?
It would be helpful if you could show me how to check if everything is configured fine...
回答1:
Remove all your failed downloads:
find ~/.m2 -name \"*.lastUpdated\" -exec grep -q \"Could not transfer\" {} \\; -print -exec rm {} \\;
For windows:
cd %userprofile%\\.m2\\repository
for /r %i in (*.lastUpdated) do del %i
Then rightclick on your project in eclipse and choose Maven->\"Update Project ...\", make sure \"Update Dependencies\" is checked in the resulting dialog and click OK.
回答2:
This worked for me in Windows as well.
- Locate the {user}/.m2/repository (Using Juno /Win7 here)
- In the Search field in upper right of window, type \".lastupdated\". Windows will look through all subfolders for these files in the directory. (I did not look through cache.)
- Remove them by Right-click > Delete (I kept all of the lastupdated.properties).
- Then go back into Eclipse, Right-click on the project and select Maven > Update Project. I selected to \"Force Update of Snapshots/Releases\". Click Ok and the dependencies finally resolved correctly.
回答3:
In Eclipse:
Right click the project->Maven->Update Project->Check checkbox \"Force Update of Snapshots/Releases\". Click OK.
回答4:
Thanks for the replies, but after some more searching I was able to fix the problem. It turned out that I had to remove one of the \"*.lastUpdated\" which was preventing one of my plugins (Maven Surefire Plugin) from updating. I did this manually, because a maven clean wasn\'t doing it apparently.
The problem was that the \"*.lastUpdated\" file for a plugin was blocking the maven check for updates and not allowing a necessary jar to get downloaded.
回答5:
Try to execute
mvn -U clean
or Run > Maven Clean and Maven > Update snapshots from project context menu in eclipse
回答6:
This worked for me in Windows:
- Locate the
{user}/.m2/repository
- In the Search field in upper right of window, type \"
.lastupdated
\". Windows will look through all subfolders for these files in the directory.
- Remove all the
.lastupdated
files.
- Go back into Eclipse, Right-click on the project and select
Maven > Update Project
.
- Select \"
Force Update of Snapshots/Releases
\".
- Click Ok and the dependencies will finally resolve correctly.
回答7:
In my case. The issues is same reason. I see the problem is on proxy and firewall.
Here my solution
Fisrt ways:
1. install Proxy for Maven and Eclipse
2. Go to Locate the {user}/.m2/repository and Remove all the *.lastupdated files
3. Go back into Eclipse, Right-click on the project and select Maven > Update Project. > Select \"Force Update of Snapshots/Releases\".
If the project is still exist error. example: here is my issues after all above step
Failure to transfer org.apache.maven:maven-archiver:pom:2.5 from https://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 org.apache.maven:maven-archiver:pom:2.5 from/to central (https://repo.maven.apache.org/maven2): Connect timed out
I use this solution useful for me:
1. Find repository in https://mvnrepository.com/
2. Copy dependency to my *.poml of project
example
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-archiver</artifactId>
<version>2.5</version>
</dependency>
3. Build project. the dependency missing will be downloaded to local repository.
4. Go back into Eclipse, Right-click on the project and select Maven > Update Project. > Select \"Force Update of Snapshots/Releases\".
=>> Error is resolved
5. I remove dependencies at step 2 after finished and resolved.
Done
回答8:
If you are behind a proxy, you have to update the settings.xml file (under the conf folder of your MAVEN_HOME, the file itself contains information about the proxy settings) and additionally you may need to update your Eclipse Network Settings (Window->Preferences...-> type Network Connections).
Try using -X or --debug in order to get the debug output, this could provide additional information about the problem.
回答9:
It happened to me as Iam behind a firewall. The dependencies doesn\'t get downloaded sometimes when you are running in Eclipse IDE. Make sure you use mvn clean install -U
to resolve the problem. You would see the dependencies download after this.
回答10:
I had similar issue in Eclipse 3.6 with m2eclipse.
Could not calculate build plan: Failure to transfer org.apache.maven.plugins:maven-resources-plugin:jar:2.4.3 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. Original error: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:jar:2.4.3 from central (http://repo1.maven.org/maven2): ConnectException project1 Unknown Maven Problem
Deleting all maven*.lastUpdated files from my local reository (as Deepak Joy suggested) solved that problem.
回答11:
It Happened to me also you may have two solue=tion for this
If your project consist of some external or project specificdependency in it then you have to manually add it to your M2 repo folder which is located at C:\\Users\\Mohit.Singh.m2\\repository folder and then you have to run
mvn eclipse:eclipse and then
mvn clean install from the project folder
if you do not have any wxternal or project sppecific dependency then you may import the project into eclipse as Existing maven project
then right click on project --> GO to maven --> Click on update project
a window will appear check the force snapshot download option and hit on OK
回答12:
I had a similar issue with only a few projects in my workspace. Other projects with nearly identical POMs didn\'t have an error at all. None of the other answers listed fixed my problem. I finally stumbled upon removing/re-applying the Maven nature for each project and the errors disappeared:
For each project that has a pom with the \"resolution will not be reattempted...\" error:
- Right-click on the project in Eclipse and select Maven->Disable Maven Nature
- Right-click on the project in Eclipse and select Configure->Convert to Maven Project
回答13:
just delete the archetype in maven local repository
. As said above, it happens in case of failed archetype downloads.
回答14:
Give correct maven setting.xml path in eclipse.
- Windows --> Preference --> Maven --> User Settings
Enter correct setting.xml path in user settings text box
回答15:
settings.xml for proxy?
and in eclipse there are maven global\\local profile, add the settings.xml
回答16:
For me I just added the bellow xml code in the POM.xml file. And after I dit **right click in the project -> Maven -> Update Project and I checked Force Update of Snapshots/Releases ** and every thing worked
<dependencies>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
回答17:
You could delete the .m2 folder itself and force MyEclipse to re-download all dependencies on startup. Go to Window > Preferences > MyEclipse > Maven4MyEclipse.
回答18:
- Above Error occured due to removing of \'maven-compiler-plugin 2.0.2\'
from maven repository.
- For me, Above error gets resolved when I downgrade \'maven-compiler-plugin\' to version to either 2.0 or 2.0.1.
回答19:
The solution that work for me is the following:
Copy the dependency to pom.
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-archiver</artifactId>
<version>2.5</version>
</dependency>
Click right on your project
- Select Maven
- Select Update project
- Select Force Update of Snapshots/Releases
回答20:
Please Make sure that settings.XML file in the folder .m2 is valid first
Then after clean the repository using below command in cmd
cd %userprofile%\\.m2\\repository
for /r %i in (*.lastUpdated) do del %i