Node.js + Arangodb建立连接并获取查询

Question

I am new to backend service. I have been trying to make a connection to arangodb from node server. I have a created a basic query in arangodb. the user auth in arangodb is so complicated and there are very few tutorials for node and arangadb combo. I have posted my code below. I have found this example online.

DataService.js

var arangojs = require('arangojs');

// Const variables for connecting to ArangoDB database

const host = '192.100.00.000'
const port = '8529'
const username = 'abcde'
const password = 'abcde'
const path = '/_db/_system/_api/'
const databasename = 'xyzm_app'

// Connection to ArangoDB
var db = new arangojs.Database({
url: `http://${host}:${port}${path}${databasename}`,
databaseName: databasename
});

 db.useBasicAuth(username, password);
//console.log(db);

module.exports = {
getAllControllers : function(){
     return db.query('For x IN {user_details} RETURN NEW {
id: x._user_details/7977010,
name: x.char_ctrl_username,
email:x.char_ctrl_email
}')
    .then(cursor => {
        return cursor.all()

 });
}

query in db

Answer 1

From the arangojs README :

// Or using a fully qualified URL containing the database path
const db = new Database({
  url: `http://${username}:${password}@${host}:${port}/_db/${database}`,
  databaseName: false // don't automatically append database path to URL
});

• databaseName: string (Default: _system)

  Name of the active database.

  If this option is explicitly set to false, the url is expected to contain the database path and the useDatabase method can not be used to switch databases.

So you either specify the full path like http://host:port/_db/dbname and set databaseName: false , or you use http://host:port and either specify databaseName: "dbname" or useDatabase("dbname") .

/_api should not be part of the path, ever. arangojs knows where to find the API endpoint and does it for you.

var arangojs = require('arangojs');

// Const variables for connecting to ArangoDB database
const host = '127.0.0.1'
const port = '8529'
const username = 'xyz'
const password = 'xyz'
const databasename = 'sgcdm_app'

 // Connection to ArangoDB
db = new arangojs.Database({
    url: `http://${host}:${port}`,
    databaseName: databasename
});
db.useBasicAuth(username, password);

db.listCollections().then(function(res) {
    res.forEach((coll, i) => {
        console.log(`${i+1}. ${coll.name} (ID=${coll.id}, system=${coll.isSystem})`)
    });
}, function(err) {
    const res = err.response.body;
    console.log(`Error ${res.errorNum}: ${res.errorMessage} (HTTP ${res.code})`);
});

On success (database exists):

1. first (ID=264349479, system=false)
2. test (ID=264349463, system=false)

On error (unknown database):

Error 1228: database not found (HTTP 404)

cross-post from GitHub