关于response.setContentType和response.setHead(下载)
关于response.setContentType和response.setHead
response.setContentType用来设置相应的文件类型
image/bmp--BMP
image/gif--GIF
image/jpeg--JPEG
image/tiff--TIFF
image/x-dcx--DCX
image/x-pcx--PCX
text/html--HTML
text/plain--TXT
text/xml--XML
application/afp--AFP
application/pdf--PDF
application/rtf--RTF
application/msword--MSWORD
application/vnd.ms-excel--MSEXCEL
application/vnd.ms-powerpoint--MSPOWERPOINT
application/wordperfect5.1--WORDPERFECT
application/vnd.lotus-wordpro--WORDPRO
application/vnd.visio--VISIO
application/vnd.framemaker--FRAMEMAKER
application/vnd.lotus-1-2-3--LOTUS123
response.setHeader 是用来设置返回页面的头 meta 信息, 使用时 response.setHeader( name, contect );
meta是用来在HTML文档中模拟HTTP协议的响应头报文。meta 标签用于网页的<head>与</head>中
1、<meta name="Generator" contect="">用以说明生成工具（如Microsoft FrontPage 4.0）等；
2、<meta name="KEYWords" contect="">向搜索引擎说明你的网页的关键词；
3、<meta name="DEscription" contect="">告诉搜索引擎你的站点的主要内容；
4、<meta name="Author" contect="你的姓名">告诉搜索引擎你的站点的制作的作者；
5、<meta name="Robots" contect= "all|none|index|noindex|follow|nofollow">
其中的属性说明如下：
设定为all：文件将被检索，且页面上的链接可以被查询；
设定为none：文件将不被检索，且页面上的链接不可以被查询；
设定为index：文件将被检索；
设定为follow：页面上的链接可以被查询；
设定为noindex：文件将不被检索，但页面上的链接可以被查询；
设定为nofollow：文件将不被检索，页面上的链接可以被查询。
http-equiv属性
1、<meta http-equiv="Content-Type" contect="text/html";charset=gb_2312-80"> 和 <meta http-equiv="Content-Language" contect="zh-CN">用以说明主页制作所使用的文字以及语言;
如英文是ISO-8859-1字符集，还有BIG5、utf-8、shift-Jis、Euc、Koi8-2等字符集;
2、<meta http-equiv="Refresh" contect="n;url=http://yourlink/">定时让网页在指定的时间n内，跳转到页面http://yourlink/；
3、<meta http-equiv="Expires" contect="Mon,12 May 2001 00:20:00 GMT">可以用于设定网页的到期时间，一旦过期则必须到服务器上重新调用。需要注意的是必须使用GMT时间格式；
4、<meta http-equiv="Pragma" contect="no-cache">是用于设定禁止浏览器从本地机的缓存中调阅页面内容，设定后一旦离开网页就无法从Cache中再调出；
5、<meta http-equiv="set-cookie" contect="Mon,12 May 2001 00:20:00 GMT">cookie设定，如果网页过期，存盘的cookie将被删除。需要注意的也是必须使用GMT时间格式；
6、<meta http-equiv="Pics-label" contect="">网页等级评定，在IE的internet选项中有一项内容设置，可以防止浏览一些受限制的网站，而网站的限制级别就是通过meta属性来设置的；
7、<meta http-equiv="windows-Target" contect="_top">强制页面在当前窗口中以独立页面显示，可以防止自己的网页被别人当作一个frame页调用；
8、<meta http-equiv="Page-Enter" contect="revealTrans(duration=10,transtion= 50)">和<meta http-equiv="Page-Exit" contect="revealTrans(duration=20，transtion=6)">设定进入和离开页面时的特殊效果，这个功能即FrontPage中的“格式/网页过渡”，不过所加的页面不能够是一个frame页面
Cache-Control头域
Cache-Control指定请求和响应遵循的缓存机制。在请求消息或响应消息中设置Cache-Control并不会修改另一个消息处理过程中的缓存处理过程。请求时的缓存指令包括no-cache、no-store、max-age、max-stale、min-fresh、only-if-cached，响应消息中的指令包括public、private、no-cache、no-store、no-transform、must-revalidate、proxy-revalidate、max-age。各个消息中的指令含义如下：
Public指示响应可被任何缓存区缓存。
Private指示对于单个用户的整个或部分响应消息，不能被共享缓存处理。这允许服务器仅仅描述当用户的部分响应消息，此响应消息对于其他用户的请求无效。
no-cache指示请求或响应消息不能缓存
no-store用于防止重要的信息被无意的发布。在请求消息中发送将使得请求和响应消息都不使用缓存。
max-age指示客户机可以接收生存期不大于指定时间（以秒为单位）的响应。
min-fresh指示客户机可以接收响应时间小于当前时间加上指定时间的响应。
max-stale指示客户机可以接收超出超时期间的响应消息。如果指定max-stale消息的值，那么客户机可以接收超出超时期指定值之内的响应消息。
response.setContentType()的String参数及对应类型
<option value="image/bmp">BMP</option>
<option value="image/gif">GIF</option>
<option value="image/jpeg">JPEG</option>
<option value="image/tiff">TIFF</option>
<option value="image/x-dcx">DCX</option>
<option value="image/x-pcx">PCX</option>
<option value="text/html">HTML</option>
<option value="text/plain">TXT</option>
<option value="text/xml">XML</option>
<option value="application/afp">AFP</option>
<option value="application/pdf">PDF</option>
<option value="application/rtf">RTF</option>
<option value="application/msword">MSWORD</option>
<option value="application/vnd.ms-excel">MSEXCEL</option>
<option value="application/vnd.ms-powerpoint">MSPOWERPOINT</option>
<option value="application/wordperfect5.1">WORDPERFECT</option>
<option value="application/vnd.lotus-wordpro">WORDPRO</option>
<option value="application/vnd.visio">VISIO</option>
<option value="application/vnd.framemaker">FRAMEMAKER</option>
<option value="application/vnd.lotus-1-2-3">LOTUS123</option>
下面是更详细的ContentType
'ez' => 'application/andrew-inset',
'hqx' => 'application/mac-binhex40',
'cpt' => 'application/mac-compactpro',
'doc' => 'application/msword',
'bin' => 'application/octet-stream',
'dms' => 'application/octet-stream',
'lha' => 'application/octet-stream',
'lzh' => 'application/octet-stream',
'exe' => 'application/octet-stream',
'class' => 'application/octet-stream',
'so' => 'application/octet-stream',
'dll' => 'application/octet-stream',
'oda' => 'application/oda',
'pdf' => 'application/pdf',
'ai' => 'application/postscript',
'eps' => 'application/postscript',
'ps' => 'application/postscript',
'smi' => 'application/smil',
'smil' => 'application/smil',
'mif' => 'application/vnd.mif',
'xls' => 'application/vnd.ms-excel',
'ppt' => 'application/vnd.ms-powerpoint',
'wbxml' => 'application/vnd.wap.wbxml',
'wmlc' => 'application/vnd.wap.wmlc',
'wmlsc' => 'application/vnd.wap.wmlscriptc',
'bcpio' => 'application/x-bcpio',
'vcd' => 'application/x-cdlink',
'pgn' => 'application/x-chess-pgn',
'cpio' => 'application/x-cpio',
'csh' => 'application/x-csh',
'dcr' => 'application/x-director',
'dir' => 'application/x-director',
'dxr' => 'application/x-director',
'dvi' => 'application/x-dvi',
'spl' => 'application/x-futuresplash',
'gtar' => 'application/x-gtar',
'hdf' => 'application/x-hdf',
'js' => 'application/x-javascript',
'skp' => 'application/x-koan',
'skd' => 'application/x-koan',
'skt' => 'application/x-koan',
'skm' => 'application/x-koan',
'latex' => 'application/x-latex',
'nc' => 'application/x-netcdf',
'cdf' => 'application/x-netcdf',
'sh' => 'application/x-sh',
'shar' => 'application/x-shar',
'swf' => 'application/x-shockwave-flash',
'sit' => 'application/x-stuffit',
'sv4cpio' => 'application/x-sv4cpio',
'sv4crc' => 'application/x-sv4crc',
'tar' => 'application/x-tar',
'tcl' => 'application/x-tcl',
'tex' => 'application/x-tex',
'texinfo' => 'application/x-texinfo',
'texi' => 'application/x-texinfo',
't' => 'application/x-troff',
'tr' => 'application/x-troff',
'roff' => 'application/x-troff',
'man' => 'application/x-troff-man',
'me' => 'application/x-troff-me',
'ms' => 'application/x-troff-ms',
'ustar' => 'application/x-ustar',
'src' => 'application/x-wais-source',
'xhtml' => 'application/xhtml+xml',
'xht' => 'application/xhtml+xml',
'zip' => 'application/zip',
'au' => 'audio/basic',
'snd' => 'audio/basic',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'kar' => 'audio/midi',
'mpga' => 'audio/mpeg',
'mp2' => 'audio/mpeg',
'mp3' => 'audio/mpeg',
'aif' => 'audio/x-aiff',
'aiff' => 'audio/x-aiff',
'aifc' => 'audio/x-aiff',
'm3u' => 'audio/x-mpegurl',
'ram' => 'audio/x-pn-realaudio',
'rm' => 'audio/x-pn-realaudio',
'rpm' => 'audio/x-pn-realaudio-plugin',
'ra' => 'audio/x-realaudio',
'wav' => 'audio/x-wav',
'pdb' => 'chemical/x-pdb',
'xyz' => 'chemical/x-xyz',
'bmp' => 'image/bmp',
'gif' => 'image/gif',
'ief' => 'image/ief',
'jpeg' => 'image/jpeg',
'jpg' => 'image/jpeg',
'jpe' => 'image/jpeg',
'png' => 'image/png',
'tiff' => 'image/tiff',
'tif' => 'image/tiff',
'djvu' => 'image/vnd.djvu',
'djv' => 'image/vnd.djvu',
'wbmp' => 'image/vnd.wap.wbmp',
'ras' => 'image/x-cmu-raster',
'pnm' => 'image/x-portable-anymap',
'pbm' => 'image/x-portable-bitmap',
'pgm' => 'image/x-portable-graymap',
'ppm' => 'image/x-portable-pixmap',
'rgb' => 'image/x-rgb',
'xbm' => 'image/x-xbitmap',
'xpm' => 'image/x-xpixmap',
'xwd' => 'image/x-xwindowdump',
'igs' => 'model/iges',
'iges' => 'model/iges',
'msh' => 'model/mesh',
'mesh' => 'model/mesh',
'silo' => 'model/mesh',
'wrl' => 'model/vrml',
'vrml' => 'model/vrml',
'css' => 'text/css',
'html' => 'text/html',
'htm' => 'text/html',
'asc' => 'text/plain',
'txt' => 'text/plain',
'rtx' => 'text/richtext',
'rtf' => 'text/rtf',
'sgml' => 'text/sgml',
'sgm' => 'text/sgml',
'tsv' => 'text/tab-separated-values',
'wml' => 'text/vnd.wap.wml',
'wmls' => 'text/vnd.wap.wmlscript',
'etx' => 'text/x-setext',
'xsl' => 'text/xml',
'xml' => 'text/xml',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpe' => 'video/mpeg',
'qt' => 'video/quicktime',
'mov' => 'video/quicktime',
'mxu' => 'video/vnd.mpegurl',
'avi' => 'video/x-msvideo',
'movie' => 'video/x-sgi-movie',
'ice' => 'x-conference/x-cooltalk'
Sets the Content-Type header. Content-Type identifies the MIME type of the response document and the character set encoding.
To set the Content-Type header, use the following code:
response.setContentType("text/html; charset=gbk");
The default MIME type is text/plain. Some common MIME types include:
------------------------------------------------------------------
HTML format (.htm or .html): text/html
Adobe Portable Document (pdf): application/pdf
Microsoft Word (.doc): application/msword
Microsoft Excel (.xls): application/msexcel
Microsoft Powerpoint (.ppt): application/ms-powerpoint
Realaudio (.rm, .ram): audio/x-pn-realaudio
Text format (.txt): text/txt
Zipped files (.zip): application/zip
response.setContentType( "application/msword" );
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-type","application/pdf");
response.setContentType() ;参数
2010-04-16 19:23
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
response.setContentType() ;
* = application/octet-stream
.001 = application/x-001
.301 = application/x-301
.323 = text/h323
.906 = application/x-906
.907 = drawing/907
.a11 = application/x-a11
.acp = audio/x-mei-aac
.ai = application/postscript
.aif = audio/aiff
.aifc = audio/aiff
.aiff = audio/aiff
.anv = application/x-anv
.asa = text/asa
.asf = video/x-ms-asf
.asp = text/asp
.asx = video/x-ms-asf
.au = audio/basic
.avi = video/avi
.awf = application/vnd.adobe.workflow
.biz = text/xml
.bmp = application/x-bmp
.bot = application/x-bot
.c4t = application/x-c4t
.c90 = application/x-c90
.cal = application/x-cals
.cat = application/vnd.ms-pki.seccat
.cdf = application/x-netcdf
.cdr = application/x-cdr
.cel = application/x-cel
.cer = application/x-x509-ca-cert
.cg4 = application/x-g4
.cgm = application/x-cgm
.cit = application/x-cit
.class = java/*
.cml = text/xml :客户端浏览器按XML格式进行解析文档
.cmp = application/x-cmp
.cmx = application/x-cmx
.cot = application/x-cot
.crl = application/pkix-crl
.crt = application/x-x509-ca-cert
.csi = application/x-csi
.css = text/css :客户端浏览器按CSS格式进行解析文档
.cut = application/x-cut
.dbf = application/x-dbf
.dbm = application/x-dbm
.dbx = application/x-dbx
.dcd = text/xml :客户端浏览器按XML格式进行解析文档
.dcx = application/x-dcx
.der = application/x-x509-ca-cert
.dgn = application/x-dgn
.dib = application/x-dib
.dll = application/x-msdownload
.doc = application/msword
.dot = application/msword
.drw = application/x-drw
.dtd = text/xml :客户端浏览器按XML格式进行解析文档
.dwf = Model/vnd.dwf
.dwf = application/x-dwf
.dwg = application/x-dwg
.dxb = application/x-dxb
.dxf = application/x-dxf
.edn = application/vnd.adobe.edn
.emf = application/x-emf
.eml = message/rfc822
.ent = text/xml :客户端浏览器按XML格式进行解析文档
.epi = application/x-epi
.eps = application/x-ps
.eps = application/postscript
.etd = application/x-ebx
.exe = application/x-msdownload
.fax = image/fax
.fdf = application/vnd.fdf
.fif = application/fractals
.fo = text/xml :客户端浏览器按XML格式进行解析文档
.frm = application/x-frm
.g4 = application/x-g4
.gbr = application/x-gbr
.gcd = application/x-gcd
.gif = image/gif
.gl2 = application/x-gl2
.gp4 = application/x-gp4
.hgl = application/x-hgl
.hmr = application/x-hmr
.hpg = application/x-hpgl
.hpl = application/x-hpl
.hqx = application/mac-binhex40
.hrf = application/x-hrf
.hta = application/hta
.htc = text/x-component
.htm = text/html :客户端浏览器按超文本格式进行解析文档
.html = text/html :客户端浏览器按超文本格式进行解析文档
.htt = text/webviewhtml
.htx = text/html :客户端浏览器按超文本格式进行解析文档
.icb = application/x-icb
.ico = image/x-icon
.ico = application/x-ico
.iff = application/x-iff
.ig4 = application/x-g4
.igs = application/x-igs
.iii = application/x-iphone
.img = application/x-img
.ins = application/x-internet-signup
.isp = application/x-internet-signup
.IVF = video/x-ivf
.java = java/*
.jfif = image/jpeg
.jpe = image/jpeg
.jpe = application/x-jpe
.jpeg = image/jpeg
.jpg = image/jpeg
.jpg = application/x-jpg
.js = application/x-javascript
.jsp = text/html :客户端浏览器按超文本格式进行解析文档
.la1 = audio/x-liquid-file
.lar = application/x-laplayer-reg
.latex = application/x-latex
.lavs = audio/x-liquid-secure
.lbm = application/x-lbm
.lmsff = audio/x-la-lms
.ls = application/x-javascript
.ltr = application/x-ltr
.m1v = video/x-mpeg
.m2v = video/x-mpeg
.m3u = audio/mpegurl
.m4e = video/mpeg4
.mac = application/x-mac
.man = application/x-troff-man
.math = text/xml
.mdb = application/msaccess
.mdb = application/x-mdb
.mfp = application/x-shockwave-flash
.mht = message/rfc822
.mhtml = message/rfc822
.mi = application/x-mi
.mid = audio/mid
.midi = audio/mid
.mil = application/x-mil
.mml = text/xml
.mnd = audio/x-musicnet-download
.mns = audio/x-musicnet-stream
.mocha = application/x-javascript
.movie = video/x-sgi-movie
.mp1 = audio/mp1
.mp2 = audio/mp2
.mp2v = video/mpeg
.mp3 = audio/mp3
.mp4 = video/mpeg4
.mpa = video/x-mpg
.mpd = application/vnd.ms-project
.mpe = video/x-mpeg
.mpeg = video/mpg
.mpg = video/mpg
.mpga = audio/rn-mpeg
.mpp = application/vnd.ms-project
.mps = video/x-mpeg
.mpt = application/vnd.ms-project
.mpv = video/mpg
.mpv2 = video/mpeg
.mpw = application/vnd.ms-project
.mpx = application/vnd.ms-project
.mtx = text/xml
.mxp = application/x-mmxp
.net = image/pnetvue
.nrf = application/x-nrf
.nws = message/rfc822
.odc = text/x-ms-odc
.out = application/x-out
.p10 = application/pkcs10
.p12 = application/x-pkcs12
.p7b = application/x-pkcs7-certificates
.p7c = application/pkcs7-mime
.p7m = application/pkcs7-mime
.p7r = application/x-pkcs7-certreqresp
.p7s = application/pkcs7-signature
.pc5 = application/x-pc5
.pci = application/x-pci
.pcl = application/x-pcl
.pcx = application/x-pcx
.pdf = application/pdf :客户端浏览器按PDF格式进行解析文档
.pdf = application/pdf
.pdx = application/vnd.adobe.pdx
.pfx = application/x-pkcs12
.pgl = application/x-pgl
.pic = application/x-pic
.pko = application/vnd.ms-pki.pko
.pl = application/x-perl
.plg = text/html
.pls = audio/scpls
.plt = application/x-plt
.png = image/png
.png = application/x-png
.pot = application/vnd.ms-powerpoint
.ppa = application/vnd.ms-powerpoint
.ppm = application/x-ppm
.pps = application/vnd.ms-powerpoint
.ppt = application/vnd.ms-powerpoint
.ppt = application/x-ppt
.pr = application/x-pr
.prf = application/pics-rules
.prn = application/x-prn
.prt = application/x-prt
.ps = application/x-ps
.ps = application/postscript
.ptn = application/x-ptn
.pwz = application/vnd.ms-powerpoint
.r3t = text/vnd.rn-realtext3d
.ra = audio/vnd.rn-realaudio
.ram = audio/x-pn-realaudio
.ras = application/x-ras
.rat = application/rat-file
.rdf = text/xml
.rec = application/vnd.rn-recording
.red = application/x-red
.rgb = application/x-rgb
.rjs = application/vnd.rn-realsystem-rjs
.rjt = application/vnd.rn-realsystem-rjt
.rlc = application/x-rlc
.rle = application/x-rle
.rm = application/vnd.rn-realmedia
.rmf = application/vnd.adobe.rmf
.rmi = audio/mid
.rmj = application/vnd.rn-realsystem-rmj
.rmm = audio/x-pn-realaudio
.rmp = application/vnd.rn-rn_music_package
.rms = application/vnd.rn-realmedia-secure
.rmvb = application/vnd.rn-realmedia-vbr
.rmx = application/vnd.rn-realsystem-rmx
.rnx = application/vnd.rn-realplayer
.rp = image/vnd.rn-realpix
.rpm = audio/x-pn-realaudio-plugin
.rsml = application/vnd.rn-rsml
.rt = text/vnd.rn-realtext
.rtf = application/msword
.rtf = application/x-rtf
.rv = video/vnd.rn-realvideo
.sam = application/x-sam
.sat = application/x-sat
.sdp = application/sdp
.sdw = application/x-sdw
.sit = application/x-stuffit
.slb = application/x-slb
.sld = application/x-sld
.slk = drawing/x-slk
.smi = application/smil
.smil = application/smil
.smk = application/x-smk
.snd = audio/basic
.sol = text/plain
.sor = text/plain
.spc = application/x-pkcs7-certificates
.spl = application/futuresplash
.spp = text/xml
.ssm = application/streamingmedia
.sst = application/vnd.ms-pki.certstore
.stl = application/vnd.ms-pki.stl
.stm = text/html
.sty = application/x-sty
.svg = text/xml
.swf = application/x-shockwave-flash :客户端浏览器按 Flash 格式进行解析文档
.tdf = application/x-tdf
.tg4 = application/x-tg4
.tga = application/x-tga
.tif = image/tiff
.tif = application/x-tif
.tiff = image/tiff
.tld = text/xml
.top = drawing/x-top
.torrent = application/x-bittorrent
.tsd = text/xml
.txt = text/plain :客户端浏览器按 纯文本 格式进行解析文档
.uin = application/x-icq
.uls = text/iuls
.vcf = text/x-vcard
.vda = application/x-vda
.vdx = application/vnd.visio
.vml = text/xml
.vpg = application/x-vpeg005
.vsd = application/vnd.visio
.vsd = application/x-vsd
.vss = application/vnd.visio
.vst = application/vnd.visio
.vst = application/x-vst
.vsw = application/vnd.visio
.vsx = application/vnd.visio
.vtx = application/vnd.visio
.vxml = text/xml
.wav = audio/wav
.wax = audio/x-ms-wax
.wb1 = application/x-wb1
.wb2 = application/x-wb2
.wb3 = application/x-wb3
.wbmp = image/vnd.wap.wbmp
.wiz = application/msword
.wk3 = application/x-wk3
.wk4 = application/x-wk4
.wkq = application/x-wkq
.wks = application/x-wks
.wm = video/x-ms-wm
.wma = audio/x-ms-wma
.wmd = application/x-ms-wmd
.wmf = application/x-wmf
.wml = text/vnd.wap.wml
.wmv = video/x-ms-wmv
.wmx = video/x-ms-wmx
.wmz = application/x-ms-wmz
.wp6 = application/x-wp6
.wpd = application/x-wpd
.wpg = application/x-wpg
.wpl = application/vnd.ms-wpl
.wq1 = application/x-wq1
.wr1 = application/x-wr1
.wri = application/x-wri
.wrk = application/x-wrk
.ws = application/x-ws
.ws2 = application/x-ws
.wsc = text/scriptlet
.wsdl = text/xml
.wvx = video/x-ms-wvx
.xdp = application/vnd.adobe.xdp
.xdr = text/xml
.xfd = application/vnd.adobe.xfd
.xfdf = application/vnd.adobe.xfdf
.xhtml = text/html
.xls = application/vnd.ms-excel
.xls = application/x-xls
.xlw = application/x-xlw
.xml = text/xml
.xpl = audio/scpls
.xq = text/xml
.xql = text/xml
.xquery = text/xml
.xsd = text/xml
.xsl = text/xml
.xslt = text/xml
.xwd = application/x-xwd
.x_b = application/x-x_b
.x_t = application/x-x_t