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我正在使用 neo4j-driver 通过 nodejs 连接到 neo4j，但我遇到了一个问题。

即使数据库已启动并运行并且可以通过neo4j浏览器访问，它也会给出错误无法连接到服务器。

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'
}

驱动程序连接设置为

const neo4j = require('neo4j-driver');

const driver = neo4j.driver('bolt://localhost', neo4j.auth.basic('neo4j', 'password'));

module.exports = driver;

我在用于添加数据的不同文件中使用这个导出的驱动程序。
这是我用来向数据库添加数据的代码。

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();

整个代码大约在一周前工作，但现在遇到了这个问题。
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1 回答 1

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当我从 wsl 2 切换到 windows powershell 时，这个问题实际上得到了解决。

于 2020-11-17T12:52:45.823 回答