合流云启动器 spring-boot 代码因不兼容类型而损坏：找到：CompletableFuture，必需：ListenableFuture

Question

创建kafka的人Confluence Cloud提供的源代码似乎不起作用，我不知道如何修复。错误是：

不兼容的类型。找到：'java.util.concurrent.CompletableFuture>'，必需：'org.springframework.util.concurrent.ListenableFuture>'

他们提供的代码如下：

生产者.java

package com.ohds.kafka1;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;
import org.springframework.kafka.support.SendResult;

@Service
public class Producer {

    private static final Logger logger = LoggerFactory.getLogger(Producer.class);
    private static final String TOPIC = "bets";

    @Autowired
    private KafkaTemplate<String, String> kafkaTemplate;

    public void sendMessage(String key, String value) {
        ListenableFuture<SendResult<String, String>> future = kafkaTemplate.send(TOPIC, key, value);
        future.addCallback(new ListenableFutureCallback<SendResult<String, String>>() {
            @Override
            public void onSuccess(SendResult<String, String> result) {
                logger.info(String.format("\n\n Produced event to topic %s: key = %-10s value = %s \n\n", TOPIC, key, value));
            }

            @Override
            public void onFailure(Throwable ex) {
                ex.printStackTrace();
            }
        });
    }
}

任何有关如何修复的建议表示赞赏。

这是 pom：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ohds</groupId>
    <artifactId>kafka1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>kafka1</name>
    <description>kafka test project 1</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.kafka</groupId>
            <artifactId>spring-kafka</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-docker-compose</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.kafka</groupId>
            <artifactId>spring-kafka-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

文档可能很简单，但已经过时了。

KafkaTemplate#send

返回CompletableFuture，而不是

ListenableFuture

此行不正确。

ListenableFuture<SendResult<String, String>> future = kafkaTemplate.send(TOPIC, key, value);

请参阅特定于您正在使用的客户端版本的 JavaDoc 和 Spring 文档，而不是来自外部来源。