スリングMongoDBを使い始める

<parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>4.0.0</version>
   <relativePath/> <!-- Lookup parent from repository -->
</parent>

<dependency>
   <groupId>org.mongodb</groupId>
   <artifactId>mongodb-spring-session</artifactId>
   <version>4.0.0-rc0</version>
</dependency>

mongodb.database=bulk
mongodb.uri=<connection URI>
documentCount=25000

package com.mongodb.examples.springdatabulkinsert;
import org.mongodb.spring.session.config.annotation.web.http.EnableMongoHttpSession;
import org.springframework.context.annotation.Configuration;
@Configuration
@EnableMongoHttpSession
public class SessionConfig {
}

package com.mongodb.examples.springdatabulkinsert;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import jakarta.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@RestController
public class ProductWebController {
    @Autowired
    private MongoTemplate mongoTemplate;
    @GetMapping("/products/search")
    public Map<String, Object> searchProducts(
            @RequestParam(required = false) String name,
            HttpSession session) {
        
        @SuppressWarnings("unchecked")
        List<String> searchHistory = (List<String>) session.getAttribute("searchHistory");
        if (searchHistory == null) {
            searchHistory = new ArrayList<>();
        }
        
        // Defines the default search if no name is provided
        if (name == null || name.trim().isEmpty()) {
            name = "product";
        }
        
        // Adds the current search to history
        searchHistory.add(name);
        session.setAttribute("searchHistory", searchHistory);
        
        // Queries the "name" field in the "products" collection
        Query query = new Query(Criteria.where("name").regex(name, "i"));
        
        List<Product> products = mongoTemplate.find(query, Product.class, "products");
        
        return Map.of(
            "products", products,
            "sessionId", session.getId()
        );
    }
    
    @GetMapping("/products/history")
    public Map<String, Object> getSearchHistory(HttpSession session) {
        // Retrieves the search history from the session
        @SuppressWarnings("unchecked")
        List<String> searchHistory = (List<String>) session.getAttribute("searchHistory");
        if (searchHistory == null) {
            searchHistory = new ArrayList<>();
        }
        
        return Map.of(
            "searchHistory", searchHistory,
            "sessionId", session.getId(),
            "searchCount", searchHistory.size()
        );
    }
    
}

package com.mongodb.examples.springdatabulkinsert;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringDataBulkInsertApplication implements CommandLineRunner {
    @Value("${documentCount}")
    private int count;
    private static final Logger LOG = LoggerFactory
            .getLogger(SpringDataBulkInsertApplication.class);
    @Autowired
    private ProductRepository repository;
    public static void main(String[] args) {
        SpringApplication.run(SpringDataBulkInsertApplication.class, args);
    }
    @Override
    public void run(String... args) throws Exception {
        repository.bulkInsertProducts(count);
        LOG.info("Bulk insert completed. Web endpoints are now available.");
        LOG.info("You can visit these URLs:");
        LOG.info("  http://localhost:8080/products/search?name=goose");
        LOG.info("  http://localhost:8080/products/history");
    }
}

./mvnw spring-boot:run

./mvnw spring-boot:run