在Eclipse项目上安装时的Maven错误

Question

I'm trying to install maven on four projects. Let me explain the context :

I have a project (not mine), and I'm trying to run it but I have errors in the code and it's obviously maven errors. I have configured the Maven Environnement with this tuto : http://www.tutorialspoint.com/maven/maven_environment_setup.htm and it seems to work.

About the project, the entire project is dividing in four projects. I own only this four project, maybe they don't give me all the sources of the project (stupid) but why not.

So I'm trying to install maven in each projects and I have some errors, could you tell me what it means please ? And what should I do to resolve it ?

Text version :

C:\Users\Lison\workspace\Persyst_1.4>mvn clean install -U
[INFO] Scanning for projects...
Downloading: 

https://repo.maven.apache.org/maven2/eu/akka/AkkaToulouseSuperPom/1
.0/AkkaToulouseSuperPom-1.0.pom
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[FATAL] Non-resolvable parent POM for fr.inra.grignon:persyst:1.0-SNAPSHOT: Coul
d not find artifact eu.akka:AkkaToulouseSuperPom:pom:1.0 in central (https://rep
o.maven.apache.org/maven2) and 'parent.relativePath' points at wrong local POM @
 line 6, column 10
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project fr.inra.grignon:persyst:1.0-SNAPSHOT (C:\Users\Lison\works
pace\Persyst_1.4\pom.xml) has 1 error
[ERROR]     Non-resolvable parent POM for fr.inra.grignon:persyst:1.0-SNAPSHOT:
Could not find artifact eu.akka:AkkaToulouseSuperPom:pom:1.0 in central (https:/
/repo.maven.apache.org/maven2) and 'parent.relativePath' points at wrong local P
OM @ line 6, column 10 -> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildin
gException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableMo
delException

**EDIT : **

Project 1
    >src
    >compile
    >pom.xml
Project 2
    >src
    >pom.xml
Project 3
    >src
    >pom.xml
Project 4
    >src
    >pom.xml

Answer 1

It is showing

Non-resolvable parent POM for fr.inra.grignon:persyst:1.0-snapshot

it means this indicates that maven did search locally for the parent pom, but found that it was not the correct pom or missing. if the project is multimodule it should have parent project.

Reference For multimodule Project you may check this link:

https://maven.apache.org/guides/mini/guide-multiple-modules.html