SpringBoot整合canal实现数据同步的示例代码

# 准备
git clone https://gitee.com/zhengqingya/docker-compose.git
cd docker-compose/Liunx

# 导入初始化SQL
Liunx/canal/canal_admin/canal_manager.sql

# 运行  (tips:先修改配置文件信息)
docker-compose -f docker-compose-canal.yml -p canal up -d

# 可参考 https://github.com/alibaba/canal/wiki/QuickStart

version: "3"

# 网桥canal -> 方便相互通讯
networks:
  canal:

services:
  canal_admin:
    image: registry.cn-hangzhou.aliyuncs.com/zhengqing/canal-admin:v1.1.5      # 原镜像`canal/canal-admin:v1.1.5`
    container_name: canal_admin               # 容器名为"canal_admin"
    restart: unless-stopped                   # 指定容器退出后的重启策略为始终重启，但是不考虑在Docker守护进程启动时就已经停止了的容器
    volumes: # 数据卷挂载路径设置,将本机目录映射到容器目录
      - "./canal/canal-admin/bin/startup.sh:/home/admin/canal-admin/bin/startup.sh"
      - "./canal/canal-admin/logs:/home/admin/canal-admin/logs"
    environment: # 设置环境变量,相当于docker run命令中的-e
      TZ: Asia/Shanghai
      LANG: en_US.UTF-8
      canal.adminUser: admin
      canal.adminPasswd: 123456
      spring.datasource.address: www.zhengqingya.com:3306
      spring.datasource.database: canal_manager
      spring.datasource.username: root
      spring.datasource.password: root
    ports:
      - "8089:8089"
    networks:
      - canal

  canal_server:
    image: registry.cn-hangzhou.aliyuncs.com/zhengqing/canal-server:v1.1.5      # 原镜像`canal/canal-server:v1.1.5`
    container_name: canal_server              # 容器名为"canal_server"
    restart: unless-stopped                   # 指定容器退出后的重启策略为始终重启，但是不考虑在Docker守护进程启动时就已经停止了的容器
    volumes:                                  # 数据卷挂载路径设置,将本机目录映射到容器目录
      - "./canal/canal-server/logs:/home/admin/canal-server/logs"
    environment:                              # 设置环境变量,相当于docker run命令中的-e
      TZ: Asia/Shanghai
      LANG: en_US.UTF-8
      canal.register.ip: www.zhengqingya.com
      canal.admin.manager: canal_admin:8089
      canal.admin.port: 11110
      canal.admin.user: admin
      canal.admin.passwd: 6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9
    ports:
      - "11110:11110"
      - "11111:11111"
      - "11112:11112"
    depends_on:
      - canal_admin
    links:
      - canal_admin
    networks:
      - canal

# canal admin config
#canal.admin.manager = 127.0.0.1:8089
canal.admin.port = 11110
canal.admin.user = admin
canal.admin.passwd = 6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9

# tcp, kafka, rocketMQ, rabbitMQ
canal.serverMode = rabbitMQ

rabbitmq.host = www.zhengqingya.com:5672
rabbitmq.virtual.host = my_vhost
rabbitmq.exchange = canal.exchange
rabbitmq.username = admin
rabbitmq.password = admin

canal.instance.master.address=www.zhengqingya.com:3306
# username/password
canal.instance.dbUsername=canal
canal.instance.dbPassword=canal
canal.instance.connectionCharset = UTF-8

# table regex 只同步test数据库下的t_user表
canal.instance.filter.regex=test.t_user
# table black regex
canal.instance.filter.black.regex=mysql.slave_.*

# mq config
canal.mq.topic=canal_routing_key

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

# RabbitMQ配置
spring:
  rabbitmq:
    addresses: www.zhengqingya.com:5672,www.zhengqingya.com:5673 # 指定client连接到的server的地址，多个以逗号分隔
    # 填写自己安装rabbitmq时设置的账号密码，默认账号密码为`guest`
    username: admin
    password: admin
    virtual-host: my_vhost # 填写自己的虚拟机名，对应可查看 `127.0.0.1:15672/#/users` 下Admin中的`Can access virtual hosts`信息

@Slf4j
@Component
public class CanalRabbitMqListener {

    @RabbitListener(bindings = {
            @QueueBinding(
                    value = @Queue(value = MqConstant.CANAL_QUEUE, durable = "true"),
                    exchange = @Exchange(value = MqConstant.CANAL_EXCHANGE),
                    key = MqConstant.CANAL_ROUTING_KEY
            )
    })
    public void handleCanalDataChange(String message) {
        log.info("[canal] 接收消息: {}", JSON.toJSONString(message));
    }

}

public interface MqConstant {

    String CANAL_EXCHANGE = "canal.exchange";
    String CANAL_QUEUE = "canal_queue";
    String CANAL_ROUTING_KEY = "canal_routing_key";

}

<!-- https://mvnrepository.com/artifact/top.javatool/canal-spring-boot-starter -->
<dependency>
    <groupId>top.javatool</groupId>
    <artifactId>canal-spring-boot-starter</artifactId>
    <version>1.2.1-RELEASE</version>
</dependency>

canal:
  server: www.zhengqingya.com:11111
  destination: example # tips：canal-admin中Instance管理下需存在example实例配置

@Slf4j
@Component
@CanalTable(value = "t_user")
public class UserHandler implements EntryHandler<User> {

    @Override
    public void insert(User user) {
        log.info("insert message  {}", user);
    }

    @Override
    public void update(User before, User after) {
        log.info("update before {} ", before);
        log.info("update after {}", after);
    }

    @Override
    public void delete(User user) {
        log.info("delete  {}", user);
    }

}

@Data
@Table(name = "t_user")
public class User implements Serializable {

    /**
     * 主键
     */
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "user_id")
    private Integer userId;

    /**
     * 用户名
     */
    @Column(name = "username")
    private String username;

    /**
     * 密码
     */
    @Column(name = "password")
    private String password;

    /**
     * 性别
     */
    @Column(name = "sex")
    private Integer sex;

    /**
     * 备注
     */
    private String remark;

    /**
     * 时间
     */
    private Date date;

}