4.0.0 hello hello-spring 1.0-SNAPSHOT org.springframework.boot spring-boot-starter-parent 2.2.0.M2 11 11 UTF-8 42.2.5 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-data-mongodb org.springframework.boot spring-boot-starter-jdbc org.springframework.boot spring-boot-starter-mustache org.postgresql postgresql ${postgresql.version} spring-libs-snapshot Spring Snapshots https://repo.spring.io/libs-snapshot spring-libs-snapshot Spring Snapshots https://repo.spring.io/libs-snapshot org.springframework.boot spring-boot-maven-plugin org.apache.maven.plugins maven-compiler-plugin 3.8.0 false