问题描述

我在 Express 服务器上使用 Node 'form-data' 模块来构造对来自客户端浏览器的 fetch 请求的 multipart/form-data 响应(这也是使用 fetch 的 multipart，但在服务器上接收良好在服务器上使用 multer).当服务器发回表单数据响应时，我在获取客户端收到响应时收到错误 - 无法将内容解析为 FormData."(本机 FormData)(注意:这与 Express 解析器不解析多部分不同，这是浏览器上的本机获取客户端，不解析节点表单数据)我在服务器响应或客户端响应处理中做错了什么?

I am using the Node 'form-data' module on an Express server to construct a multipart/form-data response to a fetch request from the client browser (which also a multipart using fetch, but is received fine at the server using multer on the server). When server sends back a form-data response I get error at the fetch client on receipt of response - "Could not parse content as FormData."(the native FormData) (Note: This is different from Express parsers not parsing multipart, this is the native fetch client on browser not parsing a node form-data) What am I doing wrong in the server response or client repsonse processing?

在服务器上:

const formdata = require('form-data')
app.post(req,res,next) {
// ... process the request and construct form-data response...//

var form = new formdata(); 
form.append("serverResponse", "Reply from server to fetch request from client")
res.end(form.getBuffer())
}

在客户端

//... send request to server which has no problem, but returncannot decode the response as FormData

 return fetch(  pRequest   )
    .then(response => { 
      return response.formData()   //***this throws 'Could not parse content as FormData***
    }
    .then(result => console.log(JSON.stringify(result))

推荐答案

设置标题Content-Type"您对multipart/form-data"的回复.

Set the header "Content-Type" of your response to "multipart/form-data".

这篇关于使用来自服务器的表单数据在客户端上获取响应的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！