Intellij Cannot Resolve Symbols In Spring Starter Project

Coding - Bugfix
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Problem

I downloaded a Spring starter project from Spring Initializr, but when I opened the project in Intellij, I got cannot reslove symbol errors:

Try to fix

I googled and looked through StackOverflow, and I tried the solutions below:

  • Invalidate caches and restart
  • mvn clean install
  • Delete the .m2 directory, and then mvn clean install
  • mvn clean install -U

But nothing changes.

I tried to download more Spring boot starter projects for experiment. Then when I first opened one of those projects, I got the error below:

org.codehaus.plexus.component.repository.exception.ComponentLookupException: com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) Error injecting constructor, java.lang.NoSuchMethodError: org.apache.maven.model.validation.DefaultModelValidator: method <init>()V not found
  at org.jetbrains.idea.maven.server.embedder.CustomModelValidator.<init>(Unknown Source)
  while locating org.jetbrains.idea.maven.server.embedder.CustomModelValidator
  at ClassRealm[maven.ext, parent: ClassRealm[plexus.core, parent: null]] (via modules: org.eclipse.sisu.wire.WireModule -> org.eclipse.sisu.plexus.PlexusBindingModule)
  while locating org.apache.maven.model.validation.ModelValidator annotated with @com.google.inject.name.Named(value=ide)

1 error
      role: org.apache.maven.model.validation.ModelValidator
  roleHint: ide

I searched for solutions to this error. Then I saw someone also got this error in the same version (2021.3.2) of Intellij as mine, and the problem was solved by downgrading the version of maven from 3.8.5 to 3.6.3.

What’s wrong

So FINALLY, the cannot reslove symbol problem was due to an incompatibility between the Maven and IntelliJ versions.

The release of the Maven version should be earlier than the one of Intellij.

Solution

I was using Maven 3.8.5, so I upgraded my Intellij from 2021.3.2 to 2022.1.3 (Community Edition), then everything works fine.





References

2021.3.2版本idea配置maven出现org.codehaus.plexus.component.repository.exception.ComponentLookupException

IDEA版本与MAVEN版本对应关系，及历史MAVEN版本下载