Mycat 连接Mysql8.0以上版本

一 、下载jdbc 驱动

http://central.maven.org/maven2/mysql/mysql-connector-java/8.0.16/ ，下载之后将mycat/lib 文件夹下mysql-connector-java/5.1.35 删掉，上传mysql/mysql-connector-java/8.0.16/ 到mycat/lib 目录下。
再给jar包赋权限

[root@oracle-server lib]# chmod 777 mysql-connector-java-8.0.16.jar  

二、修改schema.xml

<?xml version="1.0"?>

<mycat:schema xmlns:mycat=“http://io.mycat/”>

<schema name="TEST" checkSQLschema="true" sqlMaxLimit="100">  <!--（一定要把checkSQLschema改成true）--> 	<table name="tb_user" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> </schema>  <dataNode name="dn1" dataHost="localhost1" database="db1" /> <dataNode name="dn2" dataHost="localhost1" database="db2" /> <dataNode name="dn3" dataHost="localhost1" database="db3" /> 	<!-- 修改dbDriver  url  --> <dataHost name="localhost1" maxCon="1000" minCon="10" balance="0" 		  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100"> 	<heartbeat>show slave status</heartbeat>  	<writeHost host="hostM1" url="jdbc:mysql://192.168.1.28:3306?useSSL=false&amp;serverTimezone=UTC"  	user="mysql账户" password="mysq密码" /> </dataHost> </mycat:schema> 

修改server.xml

<!DOCTYPE mycat:server SYSTEM "server.dtd"> <mycat:server xmlns:mycat="http://io.mycat/"> 	<system> 		<property name="defaultSqlParser">druidparser</property> 		<property name="useHandshakeV10">1</property>  <!--（这里记得修改）--> 		<property name="mutiNodeLimitType">1</property> 		<property name="charset">utf8</property> 		<property name="serverPort">8066</property> 		<property name="managerPort">9066</property> 	</system> 	 	<user name="mycat" defaultAccount="true"> 		<property name="password">mycat</property> 		<property name="schemas">TEST</property> 	</user> </mycat:server>  

最后启动mycat ：

mysql -umycat -pmycat -P8066 -h127.0.0.1

文章来源: https://blog.csdn.net/qq_42833774/article/details/97270154