Spring Boot MongoDB Integration: Defining MongoTemplate Bean

To define a bean of type 'org.springframework.data.mongodb.core.MongoTemplate' in your configuration, follow these steps:

1. Add Dependencies: Include the required dependencies in your project's build file (e.g., pom.xml for Maven):

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

2. Create Configuration Class: Create a configuration class (e.g., MongoConfig) and annotate it with @Configuration:

@Configuration
public class MongoConfig {
    
    @Autowired
    private MongoProperties mongoProperties;
    
    @Bean
    public MongoTemplate mongoTemplate() throws Exception {
        MongoClient mongoClient = new MongoClient(mongoProperties.getHost(), mongoProperties.getPort());
        MongoTemplate mongoTemplate = new MongoTemplate(mongoClient, mongoProperties.getDatabase());
        return mongoTemplate;
    }
}

3. Configure Properties: Provide the necessary properties in your application.properties or application.yml file:

spring.data.mongodb.host=your_host
spring.data.mongodb.port=your_port
spring.data.mongodb.database=your_database

4. Autowire and Use: Autowire the MongoTemplate bean in your application classes:

@Autowired
private MongoTemplate mongoTemplate;

You can now use the MongoTemplate instance to perform operations on your MongoDB database.