Connect to MongoDb using Spring Boot - spring

Question

I want to connect a Spring Boot REST Api project to a MongoDb via aplication.properties file. Why? Because it seems easier to me.
I know how to do this connection with a MySQL db. I have downloaded MongoDb Compass GUI.
application.properties file
spring.data.mongodb.uri=mongodb://localhost:27017/springtest
spring.data.mongodb.username=mihai
spring.data.mongodb.password=mihai
I use uri because I have found that if the MongoDb version is > 3.x.x you should use that. My MongoDb version is 4.4.4
Users collection: link
pom file:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<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.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>3.1.6</version>
</dependency>
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>3.12.8</version>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.4.4</version>
</plugin>
</plugins>
</build>
</project>
UserRepository file:
public interface UserRepository extends MongoRepository<Users, String> {
}
Main application file:
#SpringBootApplication(exclude={SecurityAutoConfiguration.class})
public class AdServicesApplication {
public static void main(String[] args) {
SpringApplication.run(AdServicesApplication.class, args);
}
}
I get the following error trance:
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
Process finished with exit code 0
From my research I found that the problem might be because of the configuration provided in the application.properties file but I don't really know how to write it properly for MongoDb.
For instance if I change the application.properties content to:
spring.datasource.url=jdbc:mysql://localhost:3306/employee_directory?useSSL=false
spring.datasource.username=mihai
spring.datasource.password=mihai
It works perfectly fine.
Thanks!

Answer 1

Try removing the dependency
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
And use the configuration
spring.data.mongodb.uri=mongodb://localhost:27017/springtest
spring.data.mongodb.username=mihai
spring.data.mongodb.password=mihai
When you add the dependency it requires a datasource url that you not provide

Answer 2

remove the spring-data-jpa
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency>
because you're using a no-relational database (MongoDB) jpa is used only for relational database
and it will work.