Upgrade RocketMQ to 4.9.2.

fix when 'spring-boot-starter-actuator' doesn't exist, throw ClassNotFount.
add example.
optimize pom.

pom.xml

@@ -90,7 +90,7 @@
         <curator.version>4.0.1</curator.version>
 
         <!-- Apache RocketMQ -->
-        <rocketmq.version>4.6.1</rocketmq.version>
+        <rocketmq.version>4.9.2</rocketmq.version>
 
         <!-- Maven Plugin Versions -->
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>

spring-cloud-alibaba-examples/rocketmq-example/rocketmq-comprehensive-example/pom.xml

@@ -22,6 +22,10 @@
             <groupId>com.alibaba.cloud</groupId>
             <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-json</artifactId>

spring-cloud-alibaba-examples/rocketmq-example/rocketmq-comprehensive-example/src/main/java/com/alibaba/cloud/examples/RocketMQComprehensiveApplication.java

@@ -61,6 +61,8 @@ public class RocketMQComprehensiveApplication {
 		return flux -> flux.map(user -> {
 			user.setId(String.valueOf(
 					Long.parseLong(user.getId()) * Long.parseLong(user.getId())));
+			user.setName("not freeman");
+			user.getMeta().put("hobbies", Arrays.asList("programming"));
 			return user;
 		});
 	}

spring-cloud-alibaba-examples/rocketmq-example/rocketmq-comprehensive-example/src/main/resources/application.yml

@@ -5,24 +5,32 @@ spring:
     name: rocketmq-comprehensive-example
   cloud:
     stream:
+      function:
+        definition: producer;consumer;processor
       rocketmq:
         binder:
           name-server: 127.0.0.1:9876
-      function:
-        definition: producer;processor;consumer
+        bindings:
+          # TODO producer must have a group, need optimization !!!
+          producer-out-0:
+            producer:
+              group: output_1
+          processor-out-0:
+            producer:
+              group: output_2
+
       bindings:
         producer-out-0:
           destination: num
-          group: producer_group
-        processor-in-0:
-          destination: num
-          group: processor_group
         processor-out-0:
           destination: square
+        processor-in-0:
+          destination: num
           group: processor_group
         consumer-in-0:
           destination: square
           group: consumer_group
+
 logging:
   level:
-    org.apache.rocketmq: debug
+    org.springframework.context.support: debug

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/pom.xml

@@ -24,24 +24,6 @@
             <optional>true</optional>
         </dependency>
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot</artifactId>
-            <optional>true</optional>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-autoconfigure</artifactId>
-            <optional>true</optional>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-actuator</artifactId>
-            <optional>true</optional>
-        </dependency>
-
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-actuator-autoconfigure</artifactId>
@@ -56,18 +38,13 @@
             <groupId>org.apache.rocketmq</groupId>
             <artifactId>rocketmq-acl</artifactId>
         </dependency>
+
+        <!-- Testing -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
-
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <scope>test</scope>
-        </dependency>
-
     </dependencies>
 
 </project>

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/autoconfigurate/ExtendedBindingHandlerMappingsProviderConfiguration.java

@@ -48,7 +48,7 @@ public class ExtendedBindingHandlerMappingsProviderConfiguration {
 	}
 
 	@Bean
-	public RocketMQConfigBeanPostProcessor rocketMQConfigBeanPostProcessor() {
+	public static RocketMQConfigBeanPostProcessor rocketMQConfigBeanPostProcessor() {
 		return new RocketMQConfigBeanPostProcessor();
 	}
 

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/autoconfigurate/RocketMQBinderAutoConfiguration.java

@@ -24,6 +24,7 @@ import com.alibaba.cloud.stream.binder.rocketmq.provisioning.RocketMQTopicProvis
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.actuate.autoconfigure.health.ConditionalOnEnabledHealthIndicator;
+import org.springframework.boot.actuate.health.HealthIndicator;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -46,13 +47,6 @@ public class RocketMQBinderAutoConfiguration {
 	@Autowired
 	private RocketMQBinderConfigurationProperties rocketBinderConfigurationProperties;
 
-	@Bean
-	@ConditionalOnEnabledHealthIndicator("rocketmq")
-	@ConditionalOnClass(name = "org.springframework.boot.actuate.health.HealthIndicator")
-	public RocketMQBinderHealthIndicator rocketMQBinderHealthIndicator() {
-		return new RocketMQBinderHealthIndicator();
-	}
-
 	@Bean
 	public RocketMQTopicProvisioner rocketMQTopicProvisioner() {
 		return new RocketMQTopicProvisioner();
@@ -65,4 +59,16 @@ public class RocketMQBinderAutoConfiguration {
 				extendedBindingProperties, provisioningProvider);
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnClass(HealthIndicator.class)
+	@ConditionalOnEnabledHealthIndicator("rocketmq")
+	static class KafkaBinderHealthIndicatorConfiguration {
+
+		@Bean
+		public RocketMQBinderHealthIndicator rocketMQBinderHealthIndicator() {
+			return new RocketMQBinderHealthIndicator();
+		}
+
+	}
+
 }

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/main/java/com/alibaba/cloud/stream/binder/rocketmq/support/RocketMQMessageConverterSupport.java

@@ -33,7 +33,7 @@ import org.springframework.messaging.converter.CompositeMessageConverter;
 import org.springframework.messaging.support.MessageBuilder;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.MimeTypeUtils;
-import org.springframework.util.StringUtils;
+import org.springframework.util.ObjectUtils;
 
 /**
  * @author zkzlx
@@ -138,13 +138,13 @@ public final class RocketMQMessageConverterSupport {
 		if (Objects.nonNull(headers) && !headers.isEmpty()) {
 			Object tag = headers.getOrDefault(Headers.TAGS,
 					headers.get(toRocketHeaderKey(Headers.TAGS)));
-			if (StringUtils.hasLength(tag.toString())) {
+			if (!ObjectUtils.isEmpty(tag)) {
 				rocketMsg.setTags(String.valueOf(tag));
 			}
 
 			Object keys = headers.getOrDefault(Headers.KEYS,
 					headers.get(toRocketHeaderKey(Headers.KEYS)));
-			if (StringUtils.hasLength(keys.toString())) {
+			if (!ObjectUtils.isEmpty(keys)) {
 				rocketMsg.setKeys(keys.toString());
 			}
 			Object flagObj = headers.getOrDefault(Headers.FLAG,

spring-cloud-alibaba-starters/spring-cloud-starter-stream-rocketmq/src/test/java/com/alibaba/cloud/stream/binder/rocketmq/RocketMQAutoConfigurationTests.java

@@ -19,7 +19,7 @@ package com.alibaba.cloud.stream.binder.rocketmq;
 import com.alibaba.cloud.stream.binder.rocketmq.autoconfigurate.RocketMQBinderAutoConfiguration;
 import com.alibaba.cloud.stream.binder.rocketmq.properties.RocketMQBinderConfigurationProperties;
 import com.alibaba.cloud.stream.binder.rocketmq.properties.RocketMQExtendedBindingProperties;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;