这个是微信公众号请求头

Request URL: https://*********/api/admin/file/filePreview?fileName=aggr.lightapp.file-8a1bad6661d9467ebce2500c0de2ea9a.pdf&showName=%E8%99%9A%E6%8B%9F%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%BB%AD%E7%94%A8%E6%B3%A8%E9%94%80%E7%94%B3%E8%AF%B7-%E5%8D%9A%E6%80%9D2-2020033153911717%E6%B5%8B%E8%AF%95.pdf
Request Method: GET
Status Code: 200 OK
Remote Address: 121.251.19.209:443
Referrer Policy: no-referrer-when-downgrade
Access-Control-Allow-Headers: *
Access-Control-Allow-Origin: 
Access-Control-Allow-Origin: *
Access-Control-Allow-Origin: Authorization
Access-Control-Max-Age: 18000L
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Connection: keep-alive
Content-disposition: inline;filename=%E8%99%9A%E6%8B%9F%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%BB%AD%E7%94%A8%E6%B3%A8%E9%94%80%E7%94%B3%E8%AF%B7-%E5%8D%9A%E6%80%9D2-2020033153911717%E6%B5%8B%E8%AF%95.pdf
Content-Type: application/pdf
Date: Wed, 01 Apr 2020 04:07:32 GMT
Expires: 0
Pragma: no-cache
Server: nginx/1.16.1
Transfer-Encoding: chunked
X-Content-Type-Options: nosniff
X-RateLimit-Burst-Capacity: 20
X-RateLimit-Remaining: 19
X-RateLimit-Replenish-Rate: 10
X-XSS-Protection: 1; mode=block
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9
Cache-Control: no-cache
Connection: keep-alive
Cookie: JSESSIONID=h_AWvyVxRBc31-W1Scshrd-uHE9hrX8l6pWzTOmi
Host: wxtest.hfut.edu.cn
Pragma: no-cache
Referer: https://*********/pdf-preview/?file=%2Fapi%2Fadmin%2Ffile%2FfilePreview%3FfileName%3Daggr.lightapp.file-8a1bad6661d9467ebce2500c0de2ea9a.pdf%26showName%3D%E8%99%9A%E6%8B%9F%E6%9C%8D%E5%8A%A1%E5%99%A8%E7%BB%AD%E7%94%A8%E6%B3%A8%E9%94%80%E7%94%B3%E8%AF%B7-%E5%8D%9A%E6%80%9D2-2020033153911717%E6%B5%8B%E8%AF%95.pdf
sec-ch-ua: nwjs 74
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?F
User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1 wechatdevtools/1.02.1911180 MicroMessenger/7.0.4 Language/zh_CN webview/15857102941855397 webdebugger port/12169
fileName: aggr.lightapp.file-8a1bad6661d9467ebce2500c0de2ea9a.pdf
showName: 虚拟服务器续用注销申请-2-2020033153911717测试.pdf