SpringBoot整合Spring Data MongoDB

這裏使用的是spring data mongodb
官方文檔：https://docs.spring.io/spring-data/mongodb/docs/2.0.1.RELEASE/reference/html/

pom依賴

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

配置文件

spring:
  data:
    mongodb:
      host: 127.0.0.1
      database: spitdb

實體類

實體類需要用@Document指定文檔所屬於的集合collection
如同spring data jpa 要指定@table 一樣

@Data
@Document(collection="spit")
public class Spit implements Serializable {

    @Id
    private String _id;
    private String content;
    private Date publishtime;
    private String userid;
    private String nickname;
    private Integer visits;
    private Integer thumbup;
    private Integer share;
    private Integer comment;
    private String state;
    private String parentid;
}

dao

dao繼承MongoRepository

@Repository
public interface SpitDao extends MongoRepository<Spit,String> {

}

service

@Service
public class SpitService {

    @Autowired
    private SpitDao spitDao;

    @Autowired
    private IdWorker idWorker;

// 查詢所有
    public List<Spit> findAll() {
       return spitDao.findAll();
    }
//根據id查詢
    public Spit findById(String spitId) {
        return spitDao.findById(spitId).get();
    }

// 新增
    public void save(Spit spit) {
        spit.set_id(String.valueOf(idWorker.nextId()));
        spitDao.save(spit);
    }
// 修改
    public void update(Spit spit) {
        spitDao.save(spit);
    }
// 刪除
    public void deleteById(String spitId) {
        spitDao.deleteById(spitId);
    }
}