我正在开发一个ios应用程序,它使用mutipart/form-data URLRequest
将图像和文本发送到我的firebase服务器。为了处理我的云功能中的数据,我使用documentation中提到的方法将mutipart/form-data
解析为JSON format
,这是我的代码:
const Busboy = require('busboy');
exports.test = functions.https.onRequest((req, res) => {
console.log("start");
console.log(req.rawBody.toString());
if (req.method === 'POST') {
var busboy = new Busboy({ headers: req.headers});
busboy.on('field', (fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) => {
console.log('field');
});
busboy.on('finish', function() {
console.log('finish');
res.json({
data: null,
error: null
});
});
req.pipe(busboy);
} else {
console.log('else...');
}
});
但是,上面的代码似乎不起作用,这是控制台的输出:
Function execution started
start
--Boundary-43F22E06-B123-4575-A7A3-6C144C213D09
Content-Disposition: form-data; name="json"
{"name":"Alex","age":"24","friends":["John","Tom","Sam"]}
--Boundary-43F22E06-B123-4575-A7A3-6C144C213D09--
finish
Function execution took 517 ms, finished with status code: 200
如您所见,on('field')
函数永远不会执行。我错过了什么?
此外,以下是swift
中用于发送httpRequest
的代码:
var request = URLRequest(url: myCloudFunctionURL)
request.httpMethod = "POST"
request.setValue("multipart/form-data; boundary=myBoundary", forHTTPHeaderField: "Content-Type")
request.addValue(userToken, forHTTPHeaderField: "Authorization")
request.httpBody = myHttpBody
let session = URLSession.shared
session.dataTask(with: request) { (data, response, requestError) in
// callback
}.resume()
答案 0 :(得分:2)
您必须按照文档示例中的说明调用busboy.end(req.rawBody);
而不是req.pipe(busboy)
。我不知道为什么.pipe
不起作用。调用.end将产生相同的结果,但方式不同。
const Busboy = require('busboy');
exports.helloWorld = functions.https.onRequest((req, res) => {
const busboy = new Busboy({ headers: req.headers });
let formData = {};
busboy.on('field', (fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) => {
// We're just going to capture the form data in a JSON document.
formData[fieldname] = val;
console.log('Field [' + fieldname + ']: value: ' + val)
});
busboy.on('finish', () => {
res.send(formData);
});
// The raw bytes of the upload will be in req.rawBody.
busboy.end(req.rawBody);
});
答案 1 :(得分:0)
享受这个简单的快速中间件,它将所有 Content-Type: multipart/form-data
转换为 json 格式的 req.body
:)
const Busboy = require('busboy');
const expressJsMiddleware = (req, res, next) => {
const busboy = new Busboy({ headers: req.headers });
let formData = {};
busboy.on(
"field",
(fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) => {
formData = { ...formData, [fieldname]: val };
},
);
busboy.on("finish", () => {
req.body = formData;
next();
});
req.pipe(busboy);
};