may help you . After looking through several similar issues mentioned on Stack Overflow, the safest bet seems that my Maven jar files are corrupted. I discovered that fresh installs of my system were not replacing the .m2/repositories folder. I deleted it, and while building and cleaning the maven project from Spring Tool Suite and Eclipse, the repository was automatically downloaded, and the errors went away. In terms of cleaning things up, I have realized this question may be considered a duplicate.
Spring Tool Suite 3.7.0 not reading @ConfigurationProperties for content assist in YML
should help you out Two things have to be in place for the configuration properties in your own source-code to work. The "spring-boot-configuration-processor" must be on the classpath The project must be confgure properly so that Eclipse JDT Annotation Processing is enabled to run the spring-boot-configuration-processor as part of an eclipse workspace build.
Spring Tool Suite: Error Importing Spring Getting Started Content
To fix this issue You have 2 options: 1) Select Gradle (Buildship). This expects one to have Gradle eclipse plugin from Buildship installed 2) Install STS Gradle eclipse plugin and then try the wizard again after STS restarted. (Update site: http://dist.springsource.com/release/TOOLS/update/e4.5/ select 'Core/Eclipse Integration for Gradle' category)
Spring tool suite vs intellij running a spring boot project