我使用(Dropzone js)上传了ajax文件.它将文件发送到我的hapi服务器.我意识到浏览器发送了一个PREFLIGHT OPTIONS METHOD.但我的hapi服务器似乎没有发送正确的响应标题,所以我在chrome上遇到错误.

这是我得到的错误

XMLHttpRequest cannot load http://localhost:3000/uploadbookimg. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access.

这是hapi js路由处理程序

server.route({

path: '/uploadbookimg',method: 'POST',config: {

cors : true,payload: {

output: 'stream',parse: true,allow: 'multipart/form-data'

},handler: require('./books/webbookimgupload'),}

});

在我的理解中,hapi js应该从Pre-fight(OPTIONS)请求发送所有cors头.

不明白为什么不是

来自Chrome的网络请求/响应

**General**

Request Method:OPTIONS

Status Code:200 OK

Remote Address:127.0.0.1:3000

**Response Headers**

view parsed

HTTP/1.1 200 OK

content-type: application/json; charset=utf-8

cache-control: no-cache

vary: accept-encoding

Date: Wed,27 Apr 2016 07:25:33 GMT

Connection: keep-alive

Transfer-Encoding: chunked

**Request Headers**

view parsed

OPTIONS /uploadbookimg HTTP/1.1

Host: localhost:3000

Connection: keep-alive

Pragma: no-cache

Cache-Control: no-cache

Access-Control-Request-Method: POST

Origin: http://localhost:4200

User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/50.0.2661.87 Safari/537.36

Access-Control-Request-Headers: accept,cache-control,content-type

Accept: */*

Referer: http://localhost:4200/books/upload

Accept-Encoding: gzip,deflate,sdch

Accept-Language: en-US,en;q=0.8

提前致谢