nacos-spring-cloud-discovery-example 构建报错

[sunhaidong1]

org/springframework/boot/maven/RepackageMojo has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0

spring-boot-maver-plugin没指定版本。需指定2.x.x版本。