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response.setContentType()的作用及MIME参数详解

　　response.setContentType(MIME)的作用是使客户端浏览器，区分不同种类的数据，并根据不同的MIME调用浏览器内不同的程序嵌入模块来处理相应的数据。

　　例如web浏览器就是通过MIME类型来判断文件是GIF图片。通过MIME类型来处理json字符串。

　　Tomcat的安装目录\conf\web.xml 中就定义了大量MIME类型 ，可以参考。

　　response.setContentType("text/html; charset=utf-8"); html

　　.setContentType("text/plain; charset=utf-8"); 文本

　　text/javascript json数据

　　application/xml xml数据

　　这个方法设置发送到客户端的响应的内容类型，此时响应还没有提交。给出的内容类型可以包括字符编码说明，例如：text/html;charset=UTF-8.如果该方法在getWriter()方法被调用之前调用，那么响应的字符编码将仅从给出的内容类型中设置。该方法如果在getWriter()方法被调用之后或者在被提交之后调用，将不会设置响应的字符编码，在使用http协议的情况中，该方法设置 Content-type实体报头。

　　一般在Servlet中，习惯性的会首先设置请求以及响应的内容类型以及编码方式：

　　

复制代码 代码如下:

　　response.setContentType("text/html;charset=UTF-8");

　　request.setCharacterEncoding("UTF-8");

　　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>

　　MIME映射策略就是在网页中使用哪个应用程序（即插件），打开哪种文件。另外还有使用权限问题。比如对PDF文档，用“application/pdf “策略。这在动态网页中很常见。出现这种现象，有两种情形：一是使用一个应用程序去打开它不能打开的文档，比如用在标签中定义“DWG”文档用 “application/pdf ”，就会出现无法打开的问题。二是文件扩展名符合要求，但文件内容（格式）不符合要求。你可以检查你浏览的网页源代码，获得出错信息。检查方法是：查看— 源文件。寻找类似于“application/pdf “的字符串，就可以看到，要打开的文件是否与应用程序匹配。 追问 如果不相匹配如何解决回答这通常是由网页编写人来更改。比如：你在源文件里面找到你要打开的文件的HTML标签，在里面加上应用程序即可。比如，你要在网页上打开一个PDF文档，找到PDF文档那一行，在HTML标签里加上 type=“application/pdf “ 就可以了。比如以下HTML文件： <!----------测试MIME-----------><html> <head><title>测试MIME</title></head><body> <a type="application/pdf" href="test.pdf">测试MIME</a> </body> </html 将上面的代码保存为test.html，再在相同的位置存储一个pdf文档，双击它就会在网页中打开该文档。

　　-------------------------------------------------------------------------------------------------------------

　　response.setContentType()的参数说明

　　

复制代码 代码如下:

　　<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

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