I am using neo4j-driver to connect to neo4j via nodejs but I am facing an issue.
It gives the error failed to connect to server even when the database is up and running and can be accessed via neo4j browser.
Neo4jError: Failed to connect to server. Please ensure that your database is listening on
the correct host and port and that you have compatible encryption settings both on
Neo4j server and driver. Note that the default encryption setting has changed in
Neo4j 4.0. Caused by: connect ECONNREFUSED 127.0.0.1:7687
at captureStacktrace (/mnt/d/Codes/SIMply/server/node_modules/neo4j-driver/lib/result.js:277:15)
at new Result (/mnt/d/Codes/SIMply/server/node_modules/neo4j-driver/lib/result.js:68:19)
at Session._run (/mnt/d/Codes/SIMply/server/node_modules/neo4j-driver/lib/session.js:174:14)
at Session.run (/mnt/d/Codes/SIMply/server/node_modules/neo4j-driver/lib/session.js:135:19)
at /mnt/d/Codes/SIMply/server/database/randProviderdata.js:25:19
at processTicksAndRejections (internal/process/task_queues.js:97:5) {
code: 'ServiceUnavailable',
name: 'Neo4jError'
}
The driver connection settings is
const neo4j = require('neo4j-driver');
const driver = neo4j.driver('bolt://localhost', neo4j.auth.basic('neo4j', 'password'));
module.exports = driver;
I use this exported driver in different files which are used to add data.
This is the code I am using to add data to the database.
const fs = require('fs');
const path = require('path');
const driver = require('./config');
const filePath = path.join(__dirname, 'providerdata.json');
const addData = async () => {
fs.readFile(filePath, { encoding: 'utf-8' }, async (err, data) => {
if (err) {
console.log(err);
}
let session;
try {
session = driver.session();
await session.run('MATCH (a:Provider) DETACH DELETE a');
await session.close();
} catch (error) {
console.log(error);
}
const providerData = JSON.parse(data);
for (let index = 0; index < providerData.length; index++) {
const d = providerData[index];
session = driver.session();
try {
await session.run('CREATE (a:Provider {name:$name,id:$id})', {
name: d.name,
id: d.id,
});
await session.close();
} catch (error1) {
console.log(error1);
}
}
});
await driver.close();
console.log('done');
};
addData();
This whole code was working around a week ago but now is running into this problem.