Maven: non-resolvable parent POM: Failure to find error

subproject clean, clean is to delete the jar package under target

the install, successful, will be under the target to generate the jar package,

packaging success

note: only the parent project, introduced a subproject, and then in the subproject right-click the run as maven install, all components of package are automatically packed, if commend father is right, then all the components of pom. The XML file is to introduce the parent project path
After

is packaged, start
java-jar diaodu-demo.jar

by entering the command CMD
in the directory with the boot class

just like launching in eclipse, if there is any error, it will report an error, and if there is no error, it will launch successfully

generally appears on the port, which is successfully started