我试图从 mongodb atlas 获取数据

Question

我正在使用它来连接 mongodb。在之前我已经运行它完美地但是在我关闭终端并且运行它获得了然后我得到了错误。

+这是我的代码

async function loadTasksCollection(){
    const url="mongodb+srv://user:password@mytasklist.a75ix.mongodb.net/mytasklist?retryWrites=true&w=majority";
    const client=new MongoClient(url,{useNewUrlParser:true,useUnifiedTopology: true});
    try {
        await client.connect();
        console.log("sucess")
    } catch (error) {
        console.log(error);
        
    }
    return client.db("tasklist").collection("task");
    
    
}

// to read the task
router.get('/',async(req,res)=>{  
    const task= await loadTasksCollection()
    res.send(await task.find({}).toArray())
    
});

+这是第一个错误

    type: 'ReplicaSetNoPrimary',
    setName: null,
    maxSetVersion: null,
    maxElectionId: null,
    servers: Map(3) {
      'mytasklist-shard-00-02.a75ix.mongodb.net:27017' => [ServerDescription],
      'mytasklist-shard-00-00.a75ix.mongodb.net:27017' => [ServerDescription],
      'mytasklist-shard-00-01.a75ix.mongodb.net:27017' => [ServerDescription]
    },
    stale: false,
    compatible: true,
    compatibilityError: null,
    logicalSessionTimeoutMinutes: null,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    commonWireVersion: null
  }
}

+几秒钟后我得到了这个

(node:6213) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:6213) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Answer 1

我找到了解决方案，因为我关闭了我的电脑并再次打开它我的 IP 地址也发生了变化但是我忘记了在 Mongodb atlas 中更改网络访问 IP 地址。因为这只是一个练习所以现在我将网络访问 IP 地址更改为 public 所以我再也不会遇到那个问题 enter image description here

我试图从 mongodb atlas 获取数据

I tried to get data from mongodb atlas

api

mongodb

node.js

express

es6-promise