问题描述
之前我是改变了本机上面的JDK的版本17为8;
然后这次我再次尝试MapReduce运行就报错了;
尝试更改IDEA中的环境JDK为8,还是一直显示这个错误~~~
问题解决
根本问题在pom.xml文件这里,里面有定义我们使用的JDK的版本,
只要将其中的17改为8,然后再运行,就没有问题啦!!
- version UnsupportedClassVersionError compiled Runtime exampleversion unsupportedclassversionerror compiled version compiled runtime recent version unsupportedclassversionerror recognizes version unsupportedclassversionerror quot exception mqttnet version example basic recognizes versions runtime class runtime version class java version incompatible compiled expected springframework repackagemojo compiled version unsupportedclassversionerror