Mycat1.6.7连接Mysql8

Posted 2023-02-02

Mycat1.6.7是Mycat几年前的版本了，默认只兼容mysql5.7和支持java8，而我昨晚没发现这些问题，悲剧开始了，因为我的window有几个jdk版本，jdk17覆盖了jdk8，不行，后面换到虚拟机里面，因为连接的Mysql8也连不上，后面修改配置，才最终连接成功，因此记录一下

这是数据库截图

修改conf的schema.xml

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">

   <schema name="TESTDB" checkSQLschema="true" sqlMaxLimit="100">
      <!-- auto sharding by id (long) -->
      <table name="Item_detail"   primaryKey="item_id"  autoIncrement="true"  dataNode="dn1,dn2" rule="mod_rule" />

      
   </schema>
   <dataNode name="dn1" dataHost="localhost1" database="User_Info" />
   <dataNode name="dn2" dataHost="localhost2" database="User_Info" />
   <dataHost name="localhost1" maxCon="1000" minCon="10" balance="1"
           writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
      <heartbeat>select 1</heartbeat>
   <!-- can have multi write hosts -->
   <writeHost host="hostM1" url="jdbc:mysql://hadoop101:3306?useSSL=false&useUnicode=true&characterEncoding=UTF8&serverTimezone=UTC" user="root" password="12345678" />
 </dataHost>
<!--dbDriver修改为jdbc--> 
<dataHost name="localhost2" maxCon="1000" minCon="10" balance="1"
           writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
      <heartbeat>select 1</heartbeat>
   <!-- can have multi write hosts -->
   <writeHost host="hostM2" url="jdbc:mysql://192.168.154.59:3309?useSSL=false&useUnicode=true&characterEncoding=UTF8&serverTimezone=UTC" user="root" password="root" />
 </dataHost>
</mycat:schema>

修改server.xml

<property name="useHandshakeV10">1</property>
<property name="defaultSqlParser">druidparser</property>

替换lib的mysql驱动包

连接

提示

conf下的rule.xml有切片个数的配置