Question

我想在完成操作后就关闭mongodb客户端，因为我的连接限制一直达到100。但是每当我关闭连接时，都会出现此错误：

MongoError: Topology was destroyed

我的代码：

test.js-将要执行的JS文件

const db = require('./dbNew')

  db.checkUserID(124214).then(function(result){
       if(result == false){
           db.getAccessToken(810191770).then(function(result2){
                console.log(result)
           })
       }
  });

dbNew.js-我的数据库模块文件

module.exports = {
    checkUserID: function(userID){
        var isExist;
        return new Promise(function(resolve,reject){
            client.connect(err => {
                const collection = client.db("over_ride").collection("users");                  
               collection.find({user_id:userID}).count().then(function(checkCount){
                    if(checkCount>0){
                        isExist = true;
                    }
                    else{
                        isExist = false;
                    } 
                    resolve(isExist);
                    client.close()

                  })         
             });      
        });
        },
        getAccessToken: function(userID){

            return new Promise(function(resolve,reject){
                client.connect(err => {
                    const collection = client.db("over_ride").collection("users");
                                         collection.findOne({user_id:userID}).then(function(result){
                        console.log(result)
                    })

                    client.close()
                    // resolve(result.social_media.viber.access_token);                
                })
            })

        }

  }

Answer 1

完成findOne操作后，您应该关闭连接：

 collection.findOne({user_id:userID}).then(function(result){
  console.log(result)
  client.close()
})

关闭连接时MongoDB拓扑被破坏

1 个答案: