npm WARN logfile could not be created: Error: EPERM: operation not permitted, open 'D:\tools\node.js\node_cache\_logs\2022-08-15T06_05_45_700Z-debug-0.log'npm WARN logfile could not be created: Error:

导包Arrays的常用方法那肯定是在Arrays类内了，所以导包：java.util.Arrays;1.Arrays.toString()方法方法作用：快速输出数组内容，可以偷偷懒int[] a = {1,2,3,4,5};System.out.println(Arrays.toString(a));// 输出格式：[1,2,3,4,5]2....

xxl-job registry fail, registryParam:RegistryParam{registryGroup= EXECUTOR , registryKey= xxl-job-executor-sample , registryValue= http://10.16.245.130:9999/ }, registryResult:ReturnT [code=500, msg=T

xxl-job registry fail, registryParam:RegistryParam{registryGroup= EXECUTOR , registryKey= xxl-job-executor-sample , registryValue= http://10.16.245.130:9999/ }, registryResult:ReturnT [code=500, msg=T

为什么使用MQ、MQ的基本概念及规范