无法在STS中创建Maven项目

Question

I can't create new maven project using this IDE Spring Tool Suite. It show me the following errors

CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:3.1: ArtifactResolutionException: Could not transfer artifact org.apache.maven.plugins:maven-compiler-plugin:pom:3.1 from/to central ( https://repo.maven.apache.org/maven2 ): proxy.example.com

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the version of my STS is 3.7.1 RELEASE Could any one please help

Answer 1

I had the exact same problem and since I read somewhere that the error was caused by a cached file, I fixed it by deleting all the files under de .m2 repository folder. The next time I built the project I had to download all the dependencies again but it was worth it.