创建MongoTemplate bean时的UnsatisfiedDependencyException

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

spring.data.mongodb.uri=mongodb://localhost:27017/mydatabase

spring:
  data:
    mongodb:
      uri: mongodb://localhost:27017/mydatabase

@Configuration
public class MongoConfig {

    @Bean
    public MongoTemplate mongoTemplate(MongoDatabaseFactory mongoDatabaseFactory) {
        return new MongoTemplate(mongoDatabaseFactory);
    }
}

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mongoTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/mongodb/MongoDataAutoConfiguration.class]: Unsatisfied dependency expressed through method 'mongoTemplate' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.data.mongodb.MongoDatabaseFactory' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.MongoDatabaseFactory;
import org.springframework.data.mongodb.core.MongoTemplate;

@Configuration
public class MongoConfig {

    @Bean
    public MongoTemplate mongoTemplate(MongoDatabaseFactory mongoDatabaseFactory) {
        return new MongoTemplate(mongoDatabaseFactory);
    }
}