SpringBoot - UnsatisfiedDependencyException: Error creating bean with name 'cassandraSession' - spring-boot

Question

I am trying to run my SpringBoot application to check some changes I did in one of the controllers and I am getting the following error
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inboxApp': Unsatisfied dependency expressed through field 'folderRespository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'folderRepository' defined in io.inbox.folders.FolderRepository defined in #EnableCassandraRepositories declared on InboxApp: Cannot resolve reference to bean 'cassandraTemplate' while setting bean property 'cassandraTemplate'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraSession' defined in class path resource [org/springframework/boot/autoconfigure/cassandra/CassandraAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.datastax.oss.driver.api.core.CqlSession]: Factory method 'cassandraSession' threw exception; nested exception is com.datastax.oss.driver.api.core.DriverExecutionException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1413) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.8.jar:5.3.8]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.8.jar:5.3.8]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.8.jar:5.3.8]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.2.jar:2.5.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.2.jar:2.5.2]
at io.inbox.InboxApp.main(InboxApp.java:41) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.5.2.jar:2.5.2]
To be honest, this was already happening to me since I started to build de app, but after re-running the app the error seemed to disappear and everything went well. However, since I did some minor modifications in my code I cannot run the app anymore... Could you please tell me what do you think is generating this error? As you will see, my classes are super simple and I think everything is being done properly. Thanks for your time.
InboxApp
import java.nio.file.Path;
import java.util.List;
import javax.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.cass`enter code here`andra.CqlSessionBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.data.cassandra.repository.config.EnableCassandraRepositories;
import org.springframework.web.bind.annotation.RestController;
import com.datastax.oss.driver.api.core.uuid.Uuids;
import io.inbox.emaiList.EmailListItem;
import io.inbox.emaiList.EmailListItemKey;
import io.inbox.emaiList.EmailListItemRepository;
import io.inbox.email.Email;
import io.inbox.email.EmailRepository;
import io.inbox.folders.Folder;
import io.inbox.folders.FolderRepository;
#SpringBootApplication
#EnableCassandraRepositories
#RestController
public class InboxApp {
#Autowired
FolderRepository folderRespository;
#Autowired
EmailListItemRepository emailListItemRepository;
#Autowired
EmailRepository emailRepository;
public static void main(String[] args) {
SpringApplication.run(InboxApp.class, args);
}
#Bean
public CqlSessionBuilderCustomizer sessionBuilderCustomizer(DataStaxAstraProperties astraProperties) {
Path bundle = astraProperties.getSecureConnectBundle().toPath();
return builder -> builder.withCloudSecureConnectBundle(bundle);
}
#PostConstruct
public void init(){
folderRespository.save(new Folder("vict0rsan", "Inbox", "blue"));
folderRespository.save(new Folder("vict0rsan", "Sent", "green"));
folderRespository.save(new Folder("vict0rsan", "Important", "yellow"));
for(int i = 0; i < 10; i++){
EmailListItemKey key = new EmailListItemKey();
key.setId("vict0rsan");
key.setLabel("Inbox");
key.setTimeUUID(Uuids.timeBased());
EmailListItem item = new EmailListItem();
item.setKey(key);
item.setDestination(List.of("vict0rsan", "abc", "testingUser"));
item.setSubject("Subject: " + i);
item.setIsRead(false);
emailListItemRepository.save(item);
Email email = new Email();
email.setId(key.getTimeUUID());
email.setSender("vict0rsan");
email.setSubject("Subject:" + i);
email.setBody("Body: " + i);
email.setDestination(item.getDestination());
emailRepository.save(email);
}
}
}
FolderRepository
package io.inbox.folders;
import java.util.List;
import org.springframework.data.cassandra.repository.CassandraRepository;
import org.springframework.stereotype.Repository;
#Repository
public interface FolderRepository extends CassandraRepository<Folder, String>{
List<Folder> findAllById(String id);
}
FolderService
package io.inbox.folders;
import java.util.Arrays;
import java.util.List;
import org.springframework.stereotype.Service;
#Service
public class FolderService {
public List<Folder> fetchDefaultFolders(String userId){
return Arrays.asList(
new Folder(userId, "Inbox", "white"),
new Folder(userId, "Sent Items", "green"),
new Folder(userId, "Important", "red")
);
}
}
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>2.5.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>victorsan</groupId>
<artifactId>inbox-app</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>inbox-app</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity5</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-oauth2-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-oauth2-jose</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra</artifactId>
</dependency>
<dependency>
<groupId>com.datastax.oss</groupId>
<artifactId>java-driver-core</artifactId>
<version>4.13.0</version>
</dependency>
<dependency>
<groupId>org.ocpsoft.prettytime</groupId>
<artifactId>prettytime</artifactId>
<version>5.0.2.Final</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Edit: I have found out that if I comment all the 'FolderRepository' stuff within the InboxApp, then the same error will be thrown but referring to the next #Autowired repository (in my case 'emailListItemRepository')

Answer 1

The sample app code you posted contains this line at the top:
import org.springframework.boot.autoconfigure.cass`enter code here`andra.CqlSessionBuilderCustomizer;
Notice it contains enter code here instead of just cassandra.
If your code really contains that line, it might be the reason your app can't create a CqlSession.
Validate your code and try to compile it again. Cheers!