我不知道如何访问参数x-error-detail-header。
我使用node-fetch npm package从请求中收到此响应标头:
Headers {
[Symbol(map)]:
{ 'content-type': [ 'text/xml' ],
date: [ 'Fri, 27 Apr 2018 09:46:56 GMT' ],
'retry-after': [ '51184' ],
server: [ 'xxxxx' ],
'x-error-detail-header': [ 'Account Over Rate Limit' ],
'x-x-error-code': [ 'ERR_403_DEVELOPER_OVER_RATE' ],
'x-x-responder': [ 'xxxxxxx.com' ],
'x-plan-qps-allotted': [ '2' ],
'x-plan-qps-current': [ '1' ],
'x-plan-quota-allotted': [ '50' ],
'x-plan-quota-current': [ '51' ],
'x-plan-quota-reset': [ 'Saturday, April 28, 2018 12:00:00 AM GMT' ],
'content-length': [ '28' ],
connection: [ 'Close' ] } }
我的问题是我不知道如何访问[Symbol(map)]对象内的参数。
答案 0 :(得分:5)
这是Headers object。它有例如get
和forEach
方法。例如:
getDownload = async (url) => {
const response = await fetch(url);
console.log(response.headers.get('content-type'));
return {
name: response.headers.get('Content-Disposition'),
length: response.headers.get('content-length')
}
}
请注意不区分大小写。