MongoDB在SpringBoot中的整合和简单使用

一、引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
    
    
#yml配置
spring:
  data:
    mongodb:
      uri: mongodb://localhost:27017/toutiaomongo

二、简单的增删改

public class FollowerUserServiceImpl implements FollowUserService {
    @Autowired
    MongoTemplate mongoTemplate;

    @Override
    public void follow(Integer userId, Integer followUserId) {
        FollowUser followUser = new FollowUser();
        followUser.setUserId(userId);
        followUser.setFollowUserId(followUserId);
        followUser.setId(ObjectId.get());
        mongoTemplate.save(followUser);
    }

    @Override
    public void disFollow(Integer userId, Integer followUserId) {
        Query query = new Query(Criteria.where("userId").is(userId).and("followUserId").is(followUserId));
        mongoTemplate.remove(query,FollowUser.class);
    }

    @Override
    public boolean isFollow(Integer userId, Integer followUserId) {
        Query query = new Query(Criteria.where("userId").is(userId).and("followUserId").is(followUserId));
        List<FollowUser> followUsers = mongoTemplate.find(query, FollowUser.class);
        if (followUsers != null && followUsers.size() > 0){
            return true;
        }
        return false;
    }
}

三、实现简单的关注逻辑

const isFocus = () => {
  console.log("isFocus")
  // 判断是否关注
  if (user.uid == undefined) {
    return;
  }
  isFollow(user.uid, toutiao.value.uid).then(res => {
    if (res == true) {
      followLable.value = "已关注"
    }
  });
}
const focus = () => {
  console.log("focus")
  if (user.uid == undefined) {
    Toast("您未登录！")
    return;
  }
  if (followLable.value == "已关注"){
    disFollow(user.uid, toutiao.value.uid)
    followLable.value = "关注"
  }else {
    follow(user.uid, toutiao.value.uid)
    followLable.value = "已关注"
  }
  // isFollow(user.uid, toutiao.value.uid).then(res => {
  //   if (res == true) {
  //     disFollow(user.uid, toutiao.value.uid)
  //     followLable.value = "关注"
  //   } else {
  //     follow(user.uid, toutiao.value.uid)
  //     followLable.value = "已关注"
  //   }
  // });
}