怎么获取HTTP下载图片的默认文件名

Question

例如 URL:

https://www.ip2.sg/RPS/Common/SPSearchImageHandler.ashx?ID=edad4272-1669-4b7b-a082-6c69f698cc19&ParamKey=f2b84dc0-fec0-4eb0-ba48-584c62a778c3&Thumbnail=130&documentNo=c620a9ca-d165-4eb9-920e-77a6781155a0

获取到的头信息为:

{null=[HTTP/1.1 200 OK], Server=[], X-Iinfo=[14-197507858-197507968 NNNN CT(79 158 0) RT(1548663571883 417) q(0 0 2 0) r(6 6) U5], X-Content-Type-Options=[nosniff], Date=[Mon, 28 Jan 2019 08:18:12 GMT], X-Frame-Options=[sameorigin], Cache-Control=[private,no-store,no-cache], X-CDN=[Incapsula], Set-Cookie=[incap_ses_384_454533=8p5SV7LTRngCSPuUgD5UBRS7TlwAAAAAyLLMplvmFnNVL3TTtjZ85A==; path=/; Domain=.ip2.sg, my_session=!8LmclkDOnRGiZuy0fT5uGUomWtHPkrj9jqhzEzO99R1aAC6nATISASM6OsPtCb3SwqH8+rC24j2Q; expires=Mon, 28-Jan-2019 18:19:11 GMT; path=/; Secure; HttpOnly, ; HttpOnly; Secure], Expires=[-1], X-XSS-Protection=[1; mode=block], Content-Length=[1985], X-Powered-By=[, ], Content-Type=[image/jpeg]}

找不到fileName

Answer 1

GVLHEOKZWEUSJZCRBXVKADCSHXARAQZVSEUWNJMWYUDMFBDBDGOKMCRXSPSCYBRNXSLNPZHQGWZBXIKTCFISVYHDMLIGWQBHKUKMPRHCLBEGWFDZJFIEAIXAJMVLIKSVSNDGZPEUKGPSHRTGCYUKZPSOKGEOPRGCTCHRYMOKSIKUQGPLMOSVEADMPQZZAWGWRULHENMHWGJYORUJMCLUKAWXTJFVEAPSUWFIRBXIKGQMVKAQTPZUJNJZOLOXNRGVYBCFOEBKBXTXNJFIRBRYHWGISHKFBLDGIFGPSBKUXQLOYGWGWFTDBQTVYCLISVXYBDTDFOLBENBDEBQGCMCYBZIEUXTPTJFAJSBKZCMCLHEQLOEAWFBENDQTIYOENRGQMEAUXTJYHENDHDFIEAJFISBGDZIENWGODAPEUJZCLBXZIHWMJSIKORUKDTCENWSCROKXGCFNDNQSCYIXAWSIDNJMWEBXGJSVZTWGTIRHJNHKNDFGCSCLVYAQNDLNJRADTDSVLPYTJRAQZQGWIKNXGKAOEUDWEZIRNKHWTPWFDNPSORAWZTQLGVSBLHDTJYHRMCSIEZINWSPSPLIRNDLGDFHQGWFCQNQNDQGCZIYHTIKGWSWFVRHQYARHXNPMVFZPEAWZIFZDFXGDMHYBYUQZPYODZIXHKNCTDDNCSVYHXGHCZJYBCFCSOSORSVEHKTWMPYADSBRBETWCEHEHQAQTPSRNCSOSIJYOFAPAXMJTWFVLRAWSBRHXMJFYALNDAWTUKMSOENCGPYTPMFUDSILSJMILXSCLHXTDXNXVLIQTKAWLVLCYBXZWZVYBECFBXSJZJSBLJSBRAQGDSCYFAXZUDZCYOEDLADSCFBXUDFOQLUKGWSBY

Answer 2

默认文件名就这个的title吧 SPSearchImageHandler.ashx 取为 SPSearchImageHandler