我正在尝试通过 POST 请求从我的本地系统向后端服务器发送一个,但我无法在每次使用 --binary-data 而不是使用 --form 时都这样做。< /p>
这是我想使用 Node.js 构建的示例 curl:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<table>
<tr>
<td>
<span class="spanClassStatus">
Missed
</span>
<span class="wrapperSpan">
<i class="btn itagbtn" data-classschid="1" data-toggle="modal" data-target="#ModalUpdateClassStatus">Click</i>
</span>
</td>
</tr>
<tr>
<td>
<span class="spanClassStatus">
Taken
</span>
<span class="wrapperSpan">
<i class="btn itagbtn" data-classschid="2" data-toggle="modal" data-target="#ModalUpdateClassStatus">Click</i>
</span>
</td>
</tr>
<table>
<!-- Modal -->
<div class="modal fade" id="ModalUpdateClassStatus" tabindex="-1" role="dialog" aria-labelledby="modalLabelClassStatus">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="modalLabelClassStatus">Update Class Status</h4>
<button type="button" class="close d-block text-danger" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
</div>
<div class="modal-body">
<form action="#" method="POST" id="modalForm">
<div class="">
<small>Select a new status for this class</small>
<select name="selected_status_id" id="selected_status_id" required="required">
<option value="" selected="selected">Choose an item</option>
<option value="taken">Taken</option>
<option value="missed">Missed</option>
</select>
<!--added this hidden input-->
<input type="hidden" name="classschid">
</div>
<i class="fa fa-spinner fa-pulse fa-3x fa-fw text-primary d-none" id="statusSpinner"></i>
<span class="sr-only">Please wait ...</span>
<button type="submit" id="editClassStatusBtn" class="btn btn-success mt-2" style="font-size:0.9rem;">Update Status</button>
</form>
</div>
<!-- end of modal-body -->
</div>
</div>
</div>
这是component.html:
curl --location --request POST 'some-endpoint' \
--form 'file=@"/Users/name/Desktop/sample.csv"'
这是component.ts:
<form (ngSubmit)="handleCsvClick()" encrypt="multipart/form-data">
<input
type="file"
name="file-input"
#fileInput
[disabled]="requestInProgess"
(change)="handleFilePick()"
/>
<button
class="upload-btn btn-reset"
type="submit"
>
Upload CSV File
</button>
</form>
Node.js
路由器文件:
handleCsvClick(){
const file = this.fileInputRef.nativeElement.files[0];
const form = new FormData();
form.append("file", file);
const endpoint = `/api/upload-csv`;
this.http.post(endpoint,form).subscribe((data) => {
console.log(data);
});
}
控制器:
const path = require('path');
const express = require("express");
const cookieParser = require("cookie-parser");
const multer = require('multer');
const router = express.Router();
const uuidv4 = require('uuid/v4');
const advisoryController = require("../controllers/advisoryController");
const { UPLOADS_PATH } = require('../config/environment');
const storage = multer.diskStorage({
destination: UPLOADS_PATH,
filename: function(_, file, cb) {
const fileExt = path.extname(file.originalname);
cb(null, `_csvUploadFile_${uuidv4()}${fileExt}`);
},
});
const upload = multer({ storage });
router.post("/upload-csv", upload.single("file"), (req, res) => {
advisoryController
.uploadCSV(req.file)
.then(response => res.send(response.data))
.catch(error => {
res.status(error.status || 500).send("Something went wrong");
console.log(error);
});
});
在所有这些之后构建的 curl 以 --data-binary 而不是 --form 的形式出现:
const axios = require("axios");
const { advisoryList } = require("../config/apiConfig");
const fs = require('fs');
const request = require('request');
const FormData = require('form-data');
function uploadCSV(file) {
let requestUrl = advisoryList.uploadCSV.url;
const { path } = file;
const fileUpload = fs.createReadStream(path);
return new Promise((resolve, reject) => {
axios
.post(requestUrl, fileUpload, {headers: {
'Content-Type': 'multipart/form-data'
}})
.then(response => {
resolve(response.data);
})
.catch(error => {
reject(error)
console.log("CURL: ", error.request.toCurl());
});
})
}
代替:
curl 'someendpoint' -H 'accept: application/json, text/plain, */*' -H 'content-type: multipart/form-data' -H 'user-agent: axios/0.18.0' --data-binary $'userId,name,age,city\n29298914,vish,30,Bangalore\r\n0\r\n\r\n' --compressed
任何帮助将不胜感激。提前致谢。
答案 0 :(得分:1)
要在 Node.js 中使用 axios 发送文件,您需要:
form-data
库创建表单getHeaders()
设置表单中的请求标头将您的代码更改为:
const form = new FormData();
form.append('file', fileUpload, path); // 3rd argument is the file name
// Send other fields along with the file
form.append('title', 'Q1 2021');
form.append('description', 'An utterly interesting report');
// Get form headers to pass on to axios
const formHeaders = form.getHeaders();
// Sending a file with axios
axios.post(requestUrl, form, { headers: { ...formHeaders } });
您的问题启发了我将此答案转化为一篇文章 — Send a File With Axios in Node.js。它涵盖了一些常见的陷阱,您将学习如何发送存储为缓冲区或来自流的文件。