Java SpringBoot链接mongodb数据库

# Spring配置
spring:
  data:
    mongodb:
      uri: mongodb://用户:密码@localhost:27018/用户

        
            org.springframework.boot
            spring-boot-starter-data-mongodb
        

@Data
public class HuaerjieNews {
    String _id;
    //内容
    String news;
    //时间
    String newsTime;
    //来源
    String sources;
}

简单的增，删，改，查操作，使用MongoRepository提供的方法即可。只要extends  MongoRepository接口，无需添加函数

import com.news.HuaerjieNews;
import org.springframework.data.mongodb.repository.MongoRepository;


public interface HuaerjieNewsRepository extends MongoRepository {
}

import org.springframework.data.domain.Sort;

public class MarketDataController  extends baseController {


    
    @Autowired
    private HuaerjieNewsRepository huaerjieNewsRepository;


    @RequestMapping("/api/v1/query-rollnews-list")
    public TableDataInfo queryrollnewsList(){

        //根据时间排序查询所有信息
        List newsTime = huaerjieNewsRepository.findAll(Sort.by(Sort.Direction.DESC, "newsTime"));
        return getDataTable(newsTime);
    }

}