如何設置POST的MIME類型-axios中的multipart / form-data？

Question

我需要發送帶有MIME的POST請求multipart/form-data

這是我對POST標頭的默認配置： axios.defaults.headers.post['Content-Type'] = 'multipart/form-data';

我希望默認的Content-Type應該是multipart/form-dat ，但是在chrome devtools中，我看到Content-Type: application/json

Answer 1

您可以嘗試以下方法：

const data = new FormData();

data.append('action', 'ADD');
data.append('param', 0);
data.append('secondParam', 0);
data.append('file', new Blob(['test payload'], { type: 'text/csv' }));

axios.post('http://httpbin.org/post', data);

這段代碼使用FormData API

另一種選擇是使用表單數據包：

const axios = require('axios');
const FormData = require('form-data');

const form = new FormData();
// Second argument  can take Buffer or Stream (lazily read during the request) too.
// Third argument is filename if you want to simulate a file upload. Otherwise omit.
form.append('field', 'a,b,c', 'blah.csv');
axios.post('http://example.org/endpoint', form, {
  headers: form.getHeaders(),
}).then(result => {
  // Handle result…
  console.log(result.data);
});