m2e

Compiler error “archive for required library could not be read” – Spring Tool Suite

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Indeed IDEs often cache the local repository (Eclipse does something similar, and I have to relaunch Eclipse). One ugly maven behavior you might encounter is that if you declare a dependency before you actually install it, maven will create an empty version of the missing dependency (folder with metadata but no jar), and you will … Read more

m2e lifecycle-mapping not found

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The org.eclipse.m2e:lifecycle-mapping plugin doesn’t exist actually. It should be used from the <build><pluginManagement> section of your pom.xml. That way, it’s not resolved by Maven but can be read by m2e. But a more practical solution to your problem would be to install the m2e build-helper connector in eclipse. You can install it from the Window … Read more