Spring Boot setting up MongoDB repository

18,180

Solution 1

As the error implies:

Caused by: java.lang.IllegalArgumentException: Database name must not be empty
at org.springframework.util.Assert.hasText(Assert.java:168) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]

You must set the database name to be used by your application. Or if it is set in here:

My applicaiton.yml file

If not, its a typo error on the filename.

Since you're already using Spring boot, why not use the spring properties for mongodb?

for ver 3.0 driver

spring.data.mongodb.uri=mongodb://user:secret@localhost:12345

for ver 2.x driver

spring.data.mongodb.host=localhost
spring.data.mongodb.port=27017

More info here http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-nosql.html

Solution 2

This property in application.properties solved for me:

spring.data.mongodb.database=my-database-name
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Em Ae
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Em Ae

Updated on June 04, 2022

Comments

  • Em Ae
    Em Ae almost 2 years

    I am trying to setup MongoDB repository for CRUD operation in my spring-boot rest app. Here is what i have so far

    My applicaiton.yml file

    server:
      data:
        mongodb: localhost
        port: 27017
        database: dbname
    

    My DbConfiguration class

    @Configuration
    @EnableMongoRepositories("com.package.path.to.repository")
    @Import(value = MongoAutoConfiguration.class)
    public class DbConfiguration extends AbstractMongoConfiguration {
    
        private final Logger log = LoggerFactory.getLogger(DbConfiguration.class);
    
        @Autowired
        private Mongo mongo;
    
        @Autowired
        private MongoProperties mongoProperties;
    
        @Bean
        public ValidatingMongoEventListener validatingMongoEventListener() {
            return new ValidatingMongoEventListener(validator());
        }
    
        @Bean
        public LocalValidatorFactoryBean validator() {
            return new LocalValidatorFactoryBean();
        }
    
        @Override
        protected String getDatabaseName() {
            return mongoProperties.getDatabase();
        }
    
        @Override
        public Mongo mongo() throws Exception {
            return mongo;
        }
    }
    

    Then I have my Document class

    @Document(collection = "T_BOOK")
    public class Book implements Serializable {
        private static final long serialVersionUID = 1L;
    
        @Id
        private String id;
    
        @NotNull
        @Size(min = 5, max = 100)
        @Field("name")
        private String name;
    
        @NotNull
        @Field("publisher")
        private String publisher;
        //more methods and setters/getters
    }
    

    My Repository Class

    package com.package.path.to.repository;
    
    import org.springframework.data.mongodb.repository.MongoRepository;
    
    import java.util.List;
    
    public interface BookRepository extends MongoRepository<Book, String> {
        Book findOneById(String id);
    
        List<Book> findAll();
    
        void delete(Book b);
    
        void deleteAll();
    }
    

    and finally, the service class

    @Service
    public class BookService {
        @Autowired
        private BookRepository bookRepository;
    
        public List<Book> findAll() {
            return bookRepository.findAll();
        }
    
        public Book findById(String id) {
            return bookRepository.findOneById(id);
        }
    
        public Book save(Book book) {
            return bookRepository.save(book);
        }
    
        public void delete(Book book) {
            bookRepository.delete(book);
        }
    
        public void deleteAll() {
            bookRepository.deleteAll();
        }
    
    }
    

    When i start the application, I get an error that unable to autowire bookRepository ... here is full exception

    Error Log

    org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'bookService': Unsatisfied dependency expressed through field 'bookRepository': Error creating bean with name 'bookRepository': Cannot resolve reference to bean 'mongoTemplate' while setting bean property 'mongoOperations'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bookRepository': Cannot resolve reference to bean 'mongoTemplate' while setting bean property 'mongoOperations'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.1.BUILD-20160802.221845-8.jar:1.4.1.BUILD-SNAPSHOT]
        at com.project.path.to.FitbitApiApplication.main(FitbitApiApplication.java:14) [classes/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_73]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_73]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_73]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_73]
        at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) [idea_rt.jar:na]
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bookRepository': Cannot resolve reference to bean 'mongoTemplate' while setting bean property 'mongoOperations'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1214) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1019) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 24 common frames omitted
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoTemplate' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 38 common frames omitted
    Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.core.MongoTemplate]: Factory method 'mongoTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 47 common frames omitted
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mongoDbFactory' defined in class path resource [com/project/path/to/config/DbConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:381) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29.mongoDbFactory(<generated>) ~[classes/:na]
        at org.springframework.data.mongodb.config.AbstractMongoConfiguration.mongoTemplate(AbstractMongoConfiguration.java:100) ~[spring-data-mongodb-1.9.2.RELEASE.jar:na]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29.CGLIB$mongoTemplate$15(<generated>) ~[classes/:na]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29$$FastClassBySpringCGLIB$$8792e3ee.invoke(<generated>) ~[classes/:na]
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29.mongoTemplate(<generated>) ~[classes/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_73]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_73]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_73]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_73]
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 48 common frames omitted
    Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.MongoDbFactory]: Factory method 'mongoDbFactory' threw exception; nested exception is java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 69 common frames omitted
    Caused by: java.lang.IllegalArgumentException: Database name must not be empty
        at org.springframework.util.Assert.hasText(Assert.java:168) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.data.mongodb.core.SimpleMongoDbFactory.<init>(SimpleMongoDbFactory.java:142) ~[spring-data-mongodb-1.9.2.RELEASE.jar:na]
        at org.springframework.data.mongodb.core.SimpleMongoDbFactory.<init>(SimpleMongoDbFactory.java:93) ~[spring-data-mongodb-1.9.2.RELEASE.jar:na]
        at org.springframework.data.mongodb.config.AbstractMongoConfiguration.mongoDbFactory(AbstractMongoConfiguration.java:114) ~[spring-data-mongodb-1.9.2.RELEASE.jar:na]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29.CGLIB$mongoDbFactory$5(<generated>) ~[classes/:na]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29$$FastClassBySpringCGLIB$$8792e3ee.invoke(<generated>) ~[classes/:na]
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        at com.project.path.to.config.DbConfiguration$$EnhancerBySpringCGLIB$$a5249a29.mongoDbFactory(<generated>) ~[classes/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_73]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_73]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_73]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_73]
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
        ... 70 common frames omitted