1.Exception in thread "main" java.lang.NoSuchMethodError: scala.collection.immutable.HashSet$.empty()Lscala/collection/immutable/HashSet;
pom導入這個依賴
<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.4.4</version> </dependency>
刷新maven
更改scala版本
2.無法消費nc的數據,連不上
檢測防火牆,2種防火牆都要檢查,centos7檢測firewall,centos7以下檢測 iptables