Error while trying to publish a message from spring boot to Google cloud platform pub/sub. I was trying to publish a message to the Google Cloud Platform pub/sub messaging queue. I was getting the following errors while trying to run the application.Please help.
:: Spring Boot :: (v2.5.5) 2021-09-24 21:19:58.710 INFO 5204 --- [ main] c.p.g.o.OrderserviceApplication : Starting OrderserviceApplication using Java 1.8.0_281 on DELL-PC with PID 5204 (D:DownloadsGit Projectsspring-bootorderservicetargetclasses started by User in D:DownloadsGit Projectsspring-bootorderservice) 2021-09-24 21:19:58.714 INFO 5204 --- [ main] c.p.g.o.OrderserviceApplication : No active profile set, falling back to default profiles: default 2021-09-24 21:20:00.386 INFO 5204 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created. 2021-09-24 21:20:00.401 INFO 5204 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created. 2021-09-24 21:20:00.640 INFO 5204 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-09-24 21:20:00.663 INFO 5204 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationChannelResolver' of type [org.springframework.integration.support.channel.BeanFactoryChannelResolver] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-09-24 21:20:00.666 INFO 5204 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationDisposableAutoCreatedBeans' of type [org.springframework.integration.config.annotation.Disposables] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-09-24 21:20:01.277 INFO 5204 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2021-09-24 21:20:01.300 INFO 5204 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2021-09-24 21:20:01.300 INFO 5204 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.53] 2021-09-24 21:20:01.547 INFO 5204 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2021-09-24 21:20:01.548 INFO 5204 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2691 ms 2021-09-24 21:20:01.984 INFO 5204 --- [ main] c.g.c.s.a.c.GcpContextAutoConfiguration : The default project ID is null 2021-09-24 21:20:02.121 INFO 5204 --- [ main] c.g.c.s.core.DefaultCredentialsProvider : Default credentials provider for service account publisher-svc@lustrous-braid-326814.iam.gserviceaccount.com 2021-09-24 21:20:02.121 INFO 5204 --- [ main] c.g.c.s.core.DefaultCredentialsProvider : Scopes in use by default credentials: [https://www.googleapis.com/auth/pubsub, https://www.googleapis.com/auth/spanner.admin, https://www.googleapis.com/auth/spanner.data, https://www.googleapis.com/auth/datastore, https://www.googleapis.com/auth/sqlservice.admin, https://www.googleapis.com/auth/devstorage.read_only, https://www.googleapis.com/auth/devstorage.read_write, https://www.googleapis.com/auth/cloudruntimeconfig, https://www.googleapis.com/auth/trace.append, https://www.googleapis.com/auth/cloud-platform, https://www.googleapis.com/auth/cloud-vision, https://www.googleapis.com/auth/bigquery, https://www.googleapis.com/auth/monitoring.write] 2021-09-24 21:20:02.193 WARN 5204 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'messageSender' defined in com.project.gcp.orderservice.OrderserviceApplication: Unsatisfied dependency expressed through method 'messageSender' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubTemplate' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubPublisherTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubPublisherTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultPublisherFactory' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. 2021-09-24 21:20:02.213 INFO 5204 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2021-09-24 21:20:02.237 INFO 5204 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-09-24 21:20:02.274 ERROR 5204 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'messageSender' defined in com.project.gcp.orderservice.OrderserviceApplication: Unsatisfied dependency expressed through method 'messageSender' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubTemplate' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubPublisherTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubPublisherTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultPublisherFactory' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.10.jar:5.3.10] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.10.jar:5.3.10] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.5.jar:2.5.5] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) [spring-boot-2.5.5.jar:2.5.5] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) [spring-boot-2.5.5.jar:2.5.5] at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.5.5.jar:2.5.5] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) [spring-boot-2.5.5.jar:2.5.5] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) [spring-boot-2.5.5.jar:2.5.5] at com.project.gcp.orderservice.OrderserviceApplication.main(OrderserviceApplication.java:27) [classes/:na] Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubTemplate' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubPublisherTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubPublisherTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultPublisherFactory' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.10.jar:5.3.10] ... 19 common frames omitted Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pubSubPublisherTemplate' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Unsatisfied dependency expressed through method 'pubSubPublisherTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultPublisherFactory' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.10.jar:5.3.10] ... 33 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultPublisherFactory' defined in class path resource [com/google/cloud/spring/autoconfigure/pubsub/GcpPubSubAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1380) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-5.3.10.jar:5.3.10] ... 47 common frames omitted Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.google.cloud.spring.pubsub.support.PublisherFactory]: Factory method 'defaultPublisherFactory' threw exception; nested exception is java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.10.jar:5.3.10] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.10.jar:5.3.10] ... 61 common frames omitted Caused by: java.lang.IllegalArgumentException: The project ID can't be null or empty. at org.springframework.util.Assert.hasText(Assert.java:289) ~[spring-core-5.3.10.jar:5.3.10] at com.google.cloud.spring.pubsub.support.DefaultPublisherFactory.<init>(DefaultPublisherFactory.java:71) ~[spring-cloud-gcp-pubsub-2.0.4.jar:2.0.4] at com.google.cloud.spring.autoconfigure.pubsub.GcpPubSubAutoConfiguration.defaultPublisherFactory(GcpPubSubAutoConfiguration.java:306) ~[spring-cloud-gcp-autoconfigure-2.0.4.jar:2.0.4] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.10.jar:5.3.10] ... 62 common frames omitted
I was using only a single Java Class file.
package com.project.gcp.orderservice; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import org.springframework.integration.annotation.MessagingGateway; import org.springframework.integration.annotation.ServiceActivator; import org.springframework.messaging.MessageHandler; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RestController; import com.google.cloud.spring.pubsub.core.PubSubTemplate; import com.google.cloud.spring.pubsub.integration.outbound.PubSubMessageHandler; @SpringBootApplication @RestController public class OrderserviceApplication { private static final String TOPIC = "order"; public static void main(String[] args) { SpringApplication.run(OrderserviceApplication.class, args); } @Bean @ServiceActivator(inputChannel = "pubsubOutputChannel") public MessageHandler messageSender(PubSubTemplate pubsubTemplate) { return new PubSubMessageHandler(pubsubTemplate, TOPIC); } @MessagingGateway(defaultRequestChannel = "pubsubOutputChannel") public interface PubsubOutboundGateway{ void sendToPubsub(String text); } @Autowired private PubsubOutboundGateway messagingGateway; @PostMapping("/publishMessage") public String publishMessage() { messagingGateway.sendToPubsub("Hello! This is a Publisher message"); return "Message published successfully"; } }
Thease are my dependencies(pom.xml)
<?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>2.5.5</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.project.gcp</groupId> <artifactId>orderservice</artifactId> <version>0.0.1-SNAPSHOT</version> <name>orderservice</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-cloud-gcp.version>2.0.4</spring-cloud-gcp.version> <spring-cloud.version>2020.0.4</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-integration</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.google.cloud</groupId> <artifactId>spring-cloud-gcp-starter-pubsub</artifactId> </dependency> <dependency> <groupId>org.springframework.integration</groupId> <artifactId>spring-integration-http</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.integration</groupId> <artifactId>spring-integration-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>com.google.cloud</groupId> <artifactId>spring-cloud-gcp-dependencies</artifactId> <version>${spring-cloud-gcp.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
Please help. Thank you.
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Answer
I solved this problem. This problem occured due to a smaller error I made in the application.properties
file. Instead of spring.cloud.gcp.project-id
I used spring.cloud.gcp.project.id
.