mysql+canal+rabbitMq+Springboot 实现数据库数据同步监听

mysql+canal+rabbitMq+Springboot 实现数据库数据同步监听
本机：Mac
mysql：5.7 自己弄的测试机
canal：canal.deployer-1.1.5 Canal
MQ: docker- rabbitmq- 3.7.7-management(有图形界面)

第一步 开启数据库日志

使用 show variables like ‘%log_bin%’; 查看是否成功启用MySQL的binlog功能。
没有的话，去手动开启，这个不会的话，自己可以网上查询一下
开启后：

第二步 RabbitMQ

新建一个Exchange

消费账号根据自己的需要。我这边是自己测试研究用的，直接就用admin。或者guest

Vhost权限是要的，不然后面有影响

第三步canal

1.1.5版本
canal.properties
##换成rabbitMQ
canal.serverMode = rabbitMQ
#对应修改rabbitMQ的配置

rabbitmq.host =127.0.0.1
rabbitmq.virtual.host =my_vhost
rabbitmq.exchange =exchange_user_sync
rabbitmq.username =admin
rabbitmq.password =admin
rabbitmq.deliveryMode =

instance.properties

# table regex 具体哪个数据库哪个表，可以默认全部
canal.instance.filter.regex=test.user,test.sbc_user
# table black regex
canal.instance.filter.black.regex=mysql\\.slave_.*

然后启动

第四步-部署项目

xml

 <properties>
        <java.version>1.8java.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>com.alibaba.ottergroupId>
            <artifactId>canal.clientartifactId>
            <version>1.1.4version>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-stream-rabbitartifactId>
            <version>2.0.1.RELEASEversion>
        dependency>
    
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>

    dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                 
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>Greenwich.SR4version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>

application.properties

server.port=8080
spring.application.name=mla
spring.rabbitmq.host= localhost
spring.rabbitmq.port= 5672
spring.rabbitmq.username=admin
spring.rabbitmq.password=admin
spring.rabbitmq.virtual-host=my_vhost

spring.cloud.stream.bindings.sms-service-message-output.destination=exchange_user_sync
spring.cloud.stream.bindings.sms-service-message-input.destination=exchange_user_sync

相关类

package com.mla.test.demo.MQ;

import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.Input;
import org.springframework.cloud.stream.annotation.Output;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.SubscribableChannel;

/**
 * @author malaian
 * @description
 * @datetime 2021-08-04 11:30
 **/
@EnableBinding
public interface MessageBinding {

    //发送
    String Q_SMS_SERVICE_MESSAGE_SEND = "sms-service-message-output";
    //接收
    String Q_SMS_SERVICE_MESSAGE_SEND_A = "sms-service-message-input";

    /**
     * 消息发送
     * @return
     */
    @Output(Q_SMS_SERVICE_MESSAGE_SEND)
    MessageChannel subOutput();

    /**
     * 消息接收
     * @return
     */
    @Input(Q_SMS_SERVICE_MESSAGE_SEND_A)
    SubscribableChannel subInput();
}

实现

package com.mla.test.demo.MQ;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.StreamListener;
import org.springframework.stereotype.Component;


/**
 * @author malaian
 * @description
 * @datetime 2021-08-04 13:35
 **/
@Slf4j
@Component
@EnableBinding(MessageBinding.class)
public class MessageImpl {


    @StreamListener(MessageBinding.Q_SMS_SERVICE_MESSAGE_SEND_A)
    public void subGoodsInfoStock(String json) {
        log.info("接收的信息：{}",json);

    }
}

一切就绪后启动
mysql：新增

消息接受者接收：

转换数据后：

{
    "data":[
        {
            "user_id":"7",
            "pass_word1":"99999",
            "user_name":"000000"
        }
    ],
    "database":"test",
    "es":1628066207000,
    "id":148,
    "isDdl":false,
    "mysqlType":{
        "user_id":"bigint(20)",
        "pass_word1":"varchar(255)",
        "user_name":"varchar(255)"
    },
    "old":null,
    "pkNames":[
        "user_id"
    ],
    "sql":"",
    "sqlType":{
        "user_id":-5,
        "pass_word":12,
        "user_name":12
    },
    "table":"user",
    "ts":1628066210647,
    "type":"INSERT"
}

其中有很多字面意思很好理解的。table， sqlType等等。