update 优化 完善kafka-stream案例

ruoyi-example/ruoyi-test-mq/README.md

@@ -4,12 +4,11 @@
 
 1. rabbit: 普通消息、延迟队列
 2. rocket：普通消息、事务消息
-3. kafka：普通消息
+3. kafka：普通消息、stream流的使用
 
 后续可实现的：
 
-1. kafka stream流的使用
-2. rocket 顺序、异步、延时等
+1. rocket 顺序、异步、延时等
 
 ## 使用方式
 

ruoyi-example/ruoyi-test-mq/pom.xml

@@ -33,7 +33,10 @@
             <groupId>org.springframework.kafka</groupId>
             <artifactId>spring-kafka</artifactId>
         </dependency>
-
+        <dependency>
+            <groupId>org.apache.kafka</groupId>
+            <artifactId>kafka-streams</artifactId>
+        </dependency>
 
         <dependency>
             <groupId>org.dromara</groupId>

ruoyi-example/ruoyi-test-mq/src/main/java/org/dromara/stream/config/KafkaStreamsConfig.java

@@ -0,0 +1,27 @@
+package org.dromara.stream.config;
+
+import org.apache.kafka.streams.StreamsBuilder;
+import org.apache.kafka.streams.kstream.KStream;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * kafka stream 配置
+ *
+ * @author LionLi
+ */
+@Configuration
+public class KafkaStreamsConfig {
+
+    @Bean
+    public KStream<String, String> demoStream(StreamsBuilder builder) {
+        // 输入主题
+        KStream<String, String> source = builder.stream("input-topic");
+        // 转换逻辑：这里只是简单地将消息转换为大写
+        KStream<String, String> processed = source.mapValues(value -> value.toUpperCase());
+        // 输出到另一个主题
+        processed.to("output-topic");
+        return source;
+    }
+
+}

ruoyi-example/ruoyi-test-mq/src/main/resources/application.yml

@@ -30,6 +30,9 @@ spring:
     producer:
       key-serializer: org.apache.kafka.common.serialization.StringSerializer
       value-serializer: org.apache.kafka.common.serialization.StringSerializer
+    streams:
+      properties:
+        application.id: kafka-streams-id # 应用ID
 
 --- # rocketmq 配置
 rocketmq: