1.Communication failure during handshake. Is there a server running on localhost:3306?
解決辦法:
下載最新的jdbc驅動,解壓到jdk路徑下的jre/lib/ext目錄下,更新CLASSPATH
2. Server configuration denies access to data source
解決辦法:
grant all privileges on *.* to <username>@<servername>identified by '<password>' with grant option;
flush privileges;
3.Client does not support authentication protocol requested by server
解決辦法:
set password for <username>@<servername> = old_password('<password>');