Javascript 是否使用Node.js将json文件写入Firebase?
我有一个第三方API,我需要每5秒调用一次。我得到JSON作为响应,我想使用node.js将JSON内容写入Firebase节点。基于Firebase示例,我可以使用以下代码导入数据:Javascript 是否使用Node.js将json文件写入Firebase?,javascript,json,node.js,firebase,firebase-realtime-database,Javascript,Json,Node.js,Firebase,Firebase Realtime Database,我有一个第三方API,我需要每5秒调用一次。我得到JSON作为响应,我想使用node.js将JSON内容写入Firebase节点。基于Firebase示例,我可以使用以下代码导入数据: var usersRef = ref.child("users"); usersRef.set({ alanisawesome: { date_of_birth: "June 23, 1912", full_name: "Alan Turing" }, gracehop: {
var usersRef = ref.child("users");
usersRef.set({
alanisawesome: {
date_of_birth: "June 23, 1912",
full_name: "Alan Turing"
},
gracehop: {
date_of_birth: "December 9, 1906",
full_name: "Grace Hopper"
}
});
这些例子也起了作用。但我真正想做的是使用API端点将第三方API响应直接导入Firebase数据库。如何使用Node.js执行此操作?首先,您需要向api端点发出请求并接收数据。 然后,您可以将该json数据发送到firebase
var request = require('request');
var usersRef = ref.child("users");
request('<your_endpoint>', function (error, response, body) {
if (!error && response.statusCode == 200) {
var asJson = JSON.parse(body)
usersRef.set(asJson)
}
})
var request=require('request');
var usersRef=ref.child(“用户”);
请求(“”,函数(错误,响应,正文){
如果(!error&&response.statusCode==200){
var asJson=JSON.parse(正文)
usersRef.set(asJson)
}
})
我在Firebase文档中遇到了很多实现示例node.js代码的小“陷阱”。下面是一个完全可以工作的代码集,它纠正了将作为Google云平台功能运行的所有问题(node.js v8-async/await
在v6中不起作用):
const admin = require('firebase-admin');
// You need this library in order to use firebase in functions
const functions = require('firebase-functions');
/**
* Responds to any HTTP request.
*
* @param {!express:Request} req HTTP request context.
* @param {!express:Response} res HTTP response context.
*/
exports.uploadFile = async (req, res) => {
// Check if firebase is already initialized, per: https://maxrohde.com/2016/09/21/test-if-firebase-is-initialized-on-node-js-lambda/
if (admin.apps.length === 0) {
admin.initializeApp(functions.config().firebase);
}
var db = admin.firestore();
var message = '';
createUsers(db);
message = await getUsers(db);
res.status(200).send('Database content:\n' + message);
};
// Write data in a function so you can wait for all the Promises to complete and return per: https://github.com/firebase/functions-samples/issues/78
function createUsers(db) {
var docRef = db.collection('users').doc('alovelace');
var setAda = docRef.set({
first: 'Ada',
last: 'Lovelace',
born: 1815
})
.catch((err) => {
console.log('Error writing document', err);
});
var aTuringRef = db.collection('users').doc('aturing');
var setAlan = aTuringRef.set({
'first': 'Alan',
'middle': 'Mathison',
'last': 'Turing',
'born': 1912
})
.catch((err) => {
console.log('Error writing document', err);
});
return Promise.all([setAda, setAlan]);
}
async function getUsers(db) {
var message = '';
await db.collection('users').get()
.then((snapshot) => {
snapshot.forEach((doc) => {
// You need to stringify doc.data() if you want to render it outside of a console.log()
message += '\n' + doc.id + '=>' + JSON.stringify(doc.data());
});
})
.catch((err) => {
console.log('Error getting documents', err);
});
return message;
}