文章浏览阅读2.1w次,点赞4次,收藏20次。报错信息如下例:Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null objectAttempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null obje......
文章浏览阅读2.1w次,点赞4次,收藏20次。报错信息如下例:Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null objectAttempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null obje......
文章浏览阅读7.6k次,点赞7次,收藏12次。rabbitmq高可用集群搭建踩坑搭建rabbtmq集群时,执行 rabbitmqctl join_cluster rabbit@rabbit-node1报错Clustering node rabbit@slave1 with rabbit@rabbit-node1Error: unable to perform an operation on node ‘rabbit@rabbit-nod..._atte......