增加 spring cloud stream kafka 示例

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/pom.xml

@@ -0,0 +1,58 @@
+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>labx-11</artifactId>
+        <groupId>cn.iocoder.springboot.labs</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>labx-11-sc-stream-kafka-consumer-concurrency</artifactId>
+
+    <properties>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <spring.boot.version>2.2.4.RELEASE</spring.boot.version>
+        <spring.cloud.version>Hoxton.SR1</spring.cloud.version>
+    </properties>
+
+    <!--
+        引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
+        在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
+     -->
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-starter-parent</artifactId>
+                <version>${spring.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring.cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <!-- 引入 Spring Cloud Stream Kafka 相关依赖，将 Kafka 作为消息队列，并实现对其的自动配置 -->
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-stream-kafka</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/src/main/java/cn/iocoder/springcloud/labx11/kafkademo/consumerdemo/ConsumerApplication.java

@@ -0,0 +1,16 @@
+package cn.iocoder.springcloud.labx11.kafkademo.consumerdemo;
+
+import cn.iocoder.springcloud.labx11.kafkademo.consumerdemo.listener.MySink;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+
+@SpringBootApplication
+@EnableBinding(MySink.class)
+public class ConsumerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ConsumerApplication.class, args);
+    }
+
+}

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/src/main/java/cn/iocoder/springcloud/labx11/kafkademo/consumerdemo/listener/Demo01Consumer.java

@@ -0,0 +1,20 @@
+package cn.iocoder.springcloud.labx11.kafkademo.consumerdemo.listener;
+
+import cn.iocoder.springcloud.labx11.kafkademo.consumerdemo.message.Demo01Message;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.cloud.stream.annotation.StreamListener;
+import org.springframework.messaging.handler.annotation.Payload;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Demo01Consumer {
+
+    private Logger logger = LoggerFactory.getLogger(getClass());
+
+    @StreamListener(MySink.DEMO01_INPUT)
+    public void onMessage(@Payload Demo01Message message) {
+        logger.info("[onMessage][线程编号:{} 消息内容：{}]", Thread.currentThread().getId(), message);
+    }
+
+}

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/src/main/java/cn/iocoder/springcloud/labx11/kafkademo/consumerdemo/listener/MySink.java

@@ -0,0 +1,13 @@
+package cn.iocoder.springcloud.labx11.kafkademo.consumerdemo.listener;
+
+import org.springframework.cloud.stream.annotation.Input;
+import org.springframework.messaging.SubscribableChannel;
+
+public interface MySink {
+
+    String DEMO01_INPUT = "demo01-input";
+
+    @Input(DEMO01_INPUT)
+    SubscribableChannel demo01Input();
+
+}

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/src/main/java/cn/iocoder/springcloud/labx11/kafkademo/consumerdemo/message/Demo01Message.java

@@ -0,0 +1,29 @@
+package cn.iocoder.springcloud.labx11.kafkademo.consumerdemo.message;
+
+/**
+ * 示例 01 的 Message 消息
+ */
+public class Demo01Message {
+
+    /**
+     * 编号
+     */
+    private Integer id;
+
+    public Demo01Message setId(Integer id) {
+        this.id = id;
+        return this;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    @Override
+    public String toString() {
+        return "Demo01Message{" +
+                "id=" + id +
+                '}';
+    }
+
+}

labx-11/labx-11-sc-stream-kafka-consumer-concurrency/src/main/resources/application.yml

@@ -0,0 +1,25 @@
+spring:
+  application:
+    name: demo-consumer-application
+  cloud:
+    # Spring Cloud Stream 配置项，对应 BindingServiceProperties 类
+    stream:
+      # Binder 配置项，对应 BinderProperties Map
+#      binders:
+      # Binding 配置项，对应 BindingProperties Map
+      bindings:
+        demo01-input:
+          destination: DEMO-TOPIC-01 # 目的地。这里使用 Kafka Topic
+          content-type: application/json # 内容格式。这里使用 JSON
+          group: demo01-consumer-group # 消费者分组
+          # Consumer 配置项，对应 ConsumerProperties 类
+          consumer:
+            concurrency: 2 # 每个 Consumer 消费线程数的初始大小，默认为 1
+      # Spring Cloud Stream Kafka 配置项
+      kafka:
+        # Kafka Binder 配置项，对应 KafkaBinderConfigurationProperties 类
+        binder:
+          brokers: 127.0.0.1:9092 # 指定 Kafka Broker 地址，可以设置多个，以逗号分隔
+
+server:
+  port: ${random.int[10000,19999]} # 随机端口，方便启动多个消费者

labx-11/pom.xml

@@ -21,7 +21,11 @@
         <!--搭配 <module>labx-11-sc-stream-kafka-producer-demo</module> 作为生产者-->
         <module>labx-11-sc-stream-kafka-consumer-error-handler</module>
 
+        <!--搭配 <module>labx-11-sc-stream-kafka-producer-demo</module> 作为生产者-->
         <module>labx-11-sc-stream-kafka-consumer-broadcasting</module>
+
+        <!--搭配 <module>labx-11-sc-stream-kafka-producer-demo</module> 作为生产者-->
+        <module>labx-11-sc-stream-kafka-consumer-concurrency</module>
     </modules>
 
 </project>