在IDEA下的MongoDB项目搭建过程，实现增删查改，springboot+MongoDB

以下是使用Spring Boot和MongoDB的一个简单示例，包括增删查改操作：

1. 在pom.xml中添加依赖：

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

2. 配置application.properties或application.yml以连接到MongoDB：

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

3. 创建一个实体类：

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
 
@Document
public class YourEntity {
    @Id
    private String id;
    private String name;
    // 省略getter和setter
}

4. 创建一个MongoDB仓库接口：

import org.springframework.data.mongodb.repository.MongoRepository;
 
public interface YourEntityRepository extends MongoRepository<YourEntity, String> {
}

5. 创建一个服务类：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import java.util.List;
import java.util.Optional;
 
@Service
public class YourEntityService {
 
    @Autowired
    private YourEntityRepository repository;
 
    public List<YourEntity> findAll() {
        return repository.findAll();
    }
 
    public Optional<YourEntity> findById(String id) {
        return repository.findById(id);
    }
 
    public YourEntity save(YourEntity entity) {
        return repository.save(entity);
    }
 
    public void deleteById(String id) {
        repository.deleteById(id);
    }
}

6. 创建一个控制器类：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
 
import java.util.List;
import java.util.Optional;
 
@RestController
@RequestMapping("/your-entities")
public class YourEntityController {
 
    @Autowired
    private YourEntityService service;
 
    @GetMapping
    public List<YourEntity> getAll() {
        return service.findAll();
    }
 
    @GetMapping("/{id}")
    public Optional<YourEntity> getById(@PathVariable String id) {
        return service.findById(id);
    }
 
    @PostMapping
    public YourEntity create(@RequestBody YourEntity entity) {
        return service.save(ent