Spring boot + MongoDB - spring

Question

I'm working with Spring boot + MongoDB, and I've tried to deploy this application, but I have this exception:
Caused by: java.lang.ClassNotFoundException: org.springframework.data.mongodb.repository.MongoRepository
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_111]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_111]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[na:1.8.0_111]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_111]
... 63 common frames omitted
this is my code:
POM:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
AddressDAOImpl:
package pe.com.microexample.daoimpl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import pe.com.microexample.bean.Address;
import pe.com.microexample.dao.AddressDAO;
import pe.com.microexample.repository.AddressRepository;
#Repository
public class AddressDAOImpl implements AddressDAO{
#Autowired
private AddressRepository addressRepository;
}
AddressRepository:
package pe.com.microexample.repository;
import org.springframework.data.mongodb.repository.MongoRepository;
import pe.com.microexample.bean.Address;
public interface AddressRepository extends MongoRepository<Address, Integer>{
Address getAddress();
}
Any idea about this exception?

Answer 1

maven dependency
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
=======================================================================
application.properties
server.port = 8080
spring.data.mongodb.database=user_db
spring.data.mongodb.port=27017
spring.data.mongodb.host=localhost
=======================================================================
Repository
public interface UserRepository extends MongoRepository{
}
for reference use below link:(step by step explanation)
https://www.youtube.com/watch?v=2Tq2Q7EzhSA&t=7s