标签:dep nal val 下载地址 can before mqc art 获取
SHOW VARIABLES LIKE ‘%log_bin%‘ </DI< div>
[mysqld]
log-bin=mysql-bin
binlog-format=ROW
server_id=1 </DI< div>
<dependency>
<groupId>com.xpand</groupId>
<artifactId>starter-canal</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
@EnableCanalClient
package com.changgou.canal.listener;
import com.alibaba.otter.canal.protocol.CanalEntry;
import com.changgou.canal.config.RabbitMQConfig;
import com.xpand.starter.canal.annotation.CanalEventListener;
import com.xpand.starter.canal.annotation.ListenPoint;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
@CanalEventListener //声明当前的类是canal的监听类
public class BusinessListener {
@Autowired
private RabbitTemplate rabbitTemplate;
/**
*
* @param eventType 当前操作数据库的类型
* @param rowData 当前操作数据库的数据
*/
@ListenPoint(schema = "changgou_business",table = "tb_ad")
public void adUpdate(CanalEntry.EventType eventType,CanalEntry.RowData rowData){
System.out.println("广告表数据发生改变");
//获取改变之前的数据
//rowData.getBeforeColumnsList().forEach((c)-> System.out.println("改变前的数据:"+c.getName()+"::"+c.getValue()));
//获取改变之后的数据
//rowData.getAfterColumnsList().forEach((c)-> System.out.println("改变之后的数据:"+c.getName()+"::"+c.getValue()));
for (CanalEntry.Column column : rowData.getAfterColumnsList()) {
if ("position".equals(column.getName())){
System.out.println("发送最新的数据到MQ:"+column.getValue());
//发送消息
rabbitTemplate.convertAndSend("", RabbitMQConfig.AD_UPDATE_QUEUE,column.getValue());
}
}
}
}
标签:dep nal val 下载地址 can before mqc art 获取
原文地址:https://www.cnblogs.com/shangyunlin/p/12820888.html