canal中间件集成springboot实战落地

以下是一个简化的Spring Boot应用程序集成Canal的示例代码。

首先，在pom.xml中添加依赖：

<dependencies>
    <!-- 添加canal客户端依赖 -->
    <dependency>
        <groupId>com.alibaba.otter</groupId>
        <artifactId>canal.client</artifactId>
        <version>1.1.0</version>
    </dependency>
    <!-- 添加spring-boot-starter -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
</dependencies>

然后，创建一个简单的Spring Boot应用程序来接收Canal的数据变更事件：

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.client.CanalConnectors;
import com.alibaba.otter.canal.protocol.Message;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class CanalSpringBootApplication implements CommandLineRunner {
 
    public static void main(String[] args) {
        SpringApplication.run(CanalSpringBootApplication.class, args);
    }
 
    @Override
    public void run(String... args) throws Exception {
        // 创建连接
        CanalConnector connector = CanalConnectors.newSingleConnector(
                new InetSocketAddress(AddressUtils.getHostIp(),
                11111), "example", "", "");
 
        try {
            connector.connect();
            connector.subscribe(".*\\..*");
            connector.rollback();
            while (true) {
                // 获取指定数量的数据
                Message message = connector.getWithoutAck(100);
                long batchId = message.getId();
                if (batchId == -1 || message.getEntries().isEmpty()) {
                    Thread.sleep(1000);
                } else {
                    dataHandle(message.getEntries());
                    connector.ack(batchId); // 确认消息消费成功
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            connector.disconnect();
        }
    }
 
    private void dataHandle(List<Entry> entrys) {
        for (Entry entry : entrys) {
            if (EntryType.ROWDATA == entry.getEntryType()) {
                RowChange rowChange = null;
                try {
                    rowChange = RowChange.parseFrom(entry.getSto