错误日志java.sql.SQLException: No value specified for parameter 1at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement...

创建测试表测试SQL-- 找出current_price比price小的记录select * from check_test where current_price<price;select * from check_test where (current_price+0)<(price+0);-- 找出current_price比price大的记录select * from chec

异常[root@centos7_101 kafka]# bin/kafka-topics.sh --bootstrap-server 192.168.88.142:9092 --list\^HError while executing topic command : Timed out waiting for a node assignment. Call: listTopics[2022-04-

windows script host

复制目录和删除目录使用fs模块

Error: EXDEV: cross-device link not permitted, rename 'F:\trash.conf' -> 'G:\Trash\trash.conf'

我们在Linux系统上部署了一个node.js写的web项目，通过node app.js启动程序。但是当该会话被关闭后，该node.js项目就无法被访问了，那么该如何在会话关闭后项目也能一直被外界访问呢？这就需要用到守护进程，而pm2就是其中一种解决方式。

Error: EPERM: operation not permitted, copyfile 'G:\test.txt' -> 'G:\Trash'

异常Error: EBUSY: resource busy or locked, stat 'C:\swapfile.sys'at Object.statSync (node:fs:1536:3)at D:\NodeJs\node-demo\demo\world.js:7:24at FSReqCallback.oncomplete (node:fs:188:23) {errno: -4082,sy

异常node:internal/fs/utils:344throw err;^Error: EPERM: operation not permitted, stat 'C:\Recovery'at Object.statSync (node:fs:1536:3)at D:\NodeJs\node-demo\demo\world.js:7:24at FSReqCallback.oncomplete