报错
Cannot create JDBC driver of class 'com.mysql.jdbc.Driver' for connect URL 'jdbc:mysql-xxxxxxxx.rds.jdcloud.com:8888/getam_test'
驱动下载带bin的地址 解压后重启Jmeter
链接：https://pan.baidu.com/s/1QW30DDqyMZpF7PHK1qz_YA
提取码：fbzv
官网下载地址：https://dev.mysql.com/downloads/connector/j/
1.改变驱动的存放路径 lib 改为 lib下的ext
2.测试计划导入驱动包
3.有些可能是URL写错
错误例子：jdbc.mysql://mysql-internet-cn-north-1-4621f8723efb43e8.rds.jdcloud.com:5888/getam_test
正确例子：jdbc:mysql://mysql-internet-cn-north-1-4621f8723efb43e8.rds.jdcloud.com:5888/getam_test
jdbc 将冒号“：”写为了点 “.”
常用格式：jdbc:mysql://{ip}:{port}/{dbname}?useUnicode=true&characterEncoding=utf8，加入后缀防止乱码
jdbc:mysql://mysql-internet-cn-north-1-4621f8723efb43e8.rds.jdcloud.com:5888/getam_manage?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=UTC
