1.Cannot create PoolableConnectionFactory (Client does not support authentication protocol requested by server; consider upgrading MySQL client)
原因：jar包比數據庫版本低，樓主用的數據庫是MySQL 8.0.12，而jdbc是mysql-connector-java-5.1.7-bin.jar
解決方法：刪除現有的jar包，重新導入新的jar包(樓主下的是對應於MySQL 8.0.12的jar包：mysql-connector-java-8.0.12.jar)
下面是MySQL jdbc(即jar包)驅動的下載鏈接：
下載鏈接（官網）：https://dev.mysql.com/downloads/connector/j/
下載鏈接（包含各個版本的mysql jdbc的驅動）：http://central.maven.org/maven2/mysql/mysql-connector-java/
下載鏈接:https://mvnrepository.com/artifact/mysql/mysql-connector-java
2. Cannot create PoolableConnectionFactory (The server time zone value '???��������??��??' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.)
原因：時間無法識別
解決方法：在連接mysql的url后添加：？serverTimezone=UTC
補充說明：UTC（格林威治時間坐標）
3.jmeter鏈接MySQL的方法
https://www.cnblogs.com/syw20170419/p/9832402.html