「response.setcontenttype」response.setContentType

response.setcontenttype

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：

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="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>

response.setContentType()的参数说明

代码如下:

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

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,本文详细介绍，需要了解的朋友可以参考下

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。

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： <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。

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MIME(Multipurpose Internet Mail Extensions)多用途互联网邮件扩展类型。是设定某种扩展名的文件用一种应用程序来打开的方式类型，当该扩展名文件被访问的时候，浏览器会自动使用指定应用程序来打开。多用于指定一些客户端自定义的文件名，以及一些媒体文件打开方式。

它是一个互联网标准，扩展了电子邮件标准，使其能够支持：

非ASCII字符文本；非文本格式附件（二进制、声音、图像等）；由多部分（multiple parts）组成的消息体；包含非ASCII字符的头信息（Header information）。

这个标准被定义在RFC 2045、RFC 2046、RFC 2047、RFC 2048、RFC 2049等RFC中。 MIME改善了由RFC 822转变而来的RFC 2822，这些旧标准规定电子邮件标准并不允许在邮件消息中使用7位ASCII字符集以外的字符。正因如此，一些非英语字符消息和二进制文件，图像，声音等非文字消息原本都不能在电子邮件中传输(MIME可以)。MIME规定了用于表示各种各样的数据类型的符号化方法。此外，在万维网中使用的http协议中也使用了MIME的框架，标准被扩展为互联网媒体类型。

文件格式

最早的HTTP协议中，并没有附加的数据类型信息，所有传送的数据都被客户程序解释为超文本标记语言HTML 文档，而为了支持多媒体数据类型，HTTP协议中就使用了附加在文档之前的MIME数据类型信息来标识数据类型。

MIME意为多功能Internet邮件扩展，它设计的最初目的是为了在发送电子邮件时附加多媒体数据，让邮件客户程序能根据其类型进行处理。然而当它被HTTP协议支持之后，它的意义就更为显著了。它使得HTTP传输的不仅是普通的文本，而变得丰富多彩。

每个MIME类型由两部分组成，前面是数据的大类别，例如声音audio、图象image等，后面定义具体的种类。

常见的MIME类型(通用型)：

超文本标记语言文本 .html text/html

xml文档 .xml text/xml

XHTML文档 .xhtml application/xhtml+xml

普通文本 .txt text/plain

RTF文本 .rtf application/rtf

PDF文档 .pdf application/pdf

Microsoft Word文件 .word application/msword

PNG图像 .png image/png

GIF图形 .gif image/gif

JPEG图形 .jpeg,.jpg image/jpeg

au声音文件 .au audio/basic

MIDI音乐文件 mid,.midi audio/midi,audio/x-midi

RealAudio音乐文件 .ra, .ram audio/x-pn-realaudio

MPEG文件 .mpg,.mpeg video/mpeg

AVI文件 .avi video/x-msvideo

GZIP文件 .gz application/x-gzip

tar文件 .tar application/x-tar

任意的二进制数据 application/octet-stream

用于WAP服务器的MIME类型有：
MRP文件（国内普遍的手机）	.mrp application/octet-stream
IPA文件(IPHONE)	.ipa application/iphone-package-archive
	.deb application/x-debian-package-archive
APK文件(安卓系统)	.apk application/vnd.Android.package-archive
cab文件(windows Mobile)	.cab application/vnd.cab-com-archive
XAP文件(Windows Phone 7)	.xap application/x-silverlight-app
SIS文件(symbian平台/S60V1)	.sis application/vnd.symbian.install-archive *（下有）
SISX文件(symbian平台/S60V3/V5)	.sisx application/vnd.symbian.epoc/x-sisx-app
JAR、JAD文件(JAVA平台手机通用格式)	.jar .jad下面有

Internet中有一个专门组织IANA来确认标准的MIME类型，但Internet发展的太快，很多应用程序等不及IANA来确认他们使用的MIME类型为标准类型。因此他们使用在类别中以x-开头的方法标识这个类别还没有成为标准，例如：x-gzip，x-tar等。事实上这些类型运用的很广泛，已经成为了事实标准。只要客户机和服务器共同承认这个MIME类型，即使它是不标准的类型也没有关系，客户程序就能根据MIME类型，采用具体的处理手段来处理数据。而Web服务器和浏览器（包括操作系统）中，缺省都设置了标准的和常见的MIME类型，只有对于不常见的 MIME类型，才需要同时设置服务器和客户浏览器，以进行识别。

由于MIME类型与文档的后缀相关，因此服务器使用文档的后缀来区分不同文件的MIME类型，服务器中必须定义文档后缀和MIME类型之间的对应关系。而客户程序从服务器上接收数据的时候，它只是从服务器接受数据流，并不了解文档的名字，因此服务器必须使用附加信息来告诉客户程序数据的MIME类型。服务器在发送真正的数据之前，就要先发送标志数据的MIME类型的信息，这个信息使用Content-type关键字进行定义，例如对于HTML文档，服务器将首先发送以下两行MIME标识信息,这个标识并不是真正的数据文件的一部分。

Content-type: text/html

注意，第二行为一个空行，这是必须的，使用这个空行的目的是将MIME信息与真正的数据内容分隔开。

MIME利用了一个事实就是，RFC 822在消息体的内容中做了一点限制：唯一的限制就是只能使用简单的ASCII文本。所以，MIME信息由正常的Internet文本邮件组成，文本邮件拥有一些特别的符合RFC 822的信息头和格式化过的信息体（用ASCII 的子集来表示的附件）。这些MIME头给出了一种在邮件中表示附件的特别的方法。

信息剖析

一个普通的文本邮件的信息包含一个头部分（To: From: subject: 等等）和一个体部分（Hello Mr.,等等）。在一个符合MIME的信息中，也包含一个信息头并不奇怪，邮件的各个部分叫做MIME段，每段前也缀以一个特别的头。MIME邮件只是基于RFC 822邮件的一个扩展，然而它有着自己的RFC规范集。

头字段

MIME头根据在邮件包中的位置，大体上分为MIME信息头和MIME段头。（译者：MIME信息头指整个邮件的头，而MIME段头只每个MIME段的头。）

MIME信息头有：

MIME-Version:

这个头提供了所用MIME的版本号。这个值习惯上为1.0。

Content-Type:

它定义了数据的类型，以便数据能被适当的处理。有效的类型有：text，image，audio，video，applications，multipart和message。注意任何一个二进制附件都应该被叫做application/octet- stream。这个头的一些用例为：image/jpg, application/mswork，multipart/mixed，这只是很少的一部分。

Content-Transfer-Encoding:

这是所有头中最重要的一个，因为它说明了对数据所执行的编码方式，客户/MUA 将用它对附件进行解码。对于每个附件，可以使用7bit，8bit，binary ，quoted-printable，base64和custom中的一种编码方式。7bit编码是用在US ASCII字符集上的常用的一种编码方式，也就是，保持它的原样。8bit和binary编码一般不用。对人类可读的标准文本，如果传输要经过对格式有影响的网关时对其进行保护，可以使用quoted printable 。Base64是一种通用方法，在需要决定使用哪一种编码方法时，它提供了一个不用费脑子的选择；它通常用在二进制，非文本数据上。注意，任何非7bit 数据必须用一种模式编码，这样它就可以通过Internet邮件网关！

Content-ID:

如果Content-Type是message/external-body或multipart/alternative时，这个头就有用了，它超出了本文的范围。

Content-Description:

这是一个可选的头。它是任何信息段内容的自由文本描述。描述必须使用us-ascii码。

content-Disposition:

一个试验性的头，它用于给客户程序/MUA提供提示，来决定是否在行内显示附件或作为单独的附件。

MIME段头（出现在实际的MIME附件部分的头），除了MIME-Version头，可以拥有以上任何头字段。如果一个MIME头是信息块的一部分，它将作用于整个信息体。例如，如果Content-Transfer-Encoding显示在信息（指整个信息）头中，它应用于整个信息体，但是如果它显示在一个MIME段里，它"只能"用于那个段中。

注意：其可以对自动对收到的邮件进行解密。

类型大全

格式前面为后辍名，后面为对应的MIME型（例如：rar application/x-rar-compressed 表示。RAR对应的是application/x-rar-compressed ）

{ ".323", "text/h323" },

{ ".3gp", "video/3gpp" },

{ ".aab", "application/x-authoware-bin" },

{ ".aam", "application/x-authoware-map" },

{ ".aas", "application/x-authoware-seg" },

{ ".acx", "application/internet-property-stream" },

{ ".ai", "application/postscript" },

{ ".aif", "audio/x-aiff" },

{ ".aifc", "audio/x-aiff" },

{ ".aiff", "audio/x-aiff" },

{ ".als", "audio/X-Alpha5" },

{ ".amc", "application/x-mpeg" },

{ ".ani", "application/octet-stream" },

{ ".apk", "application/vnd.android.package-archive" },

{ ".asc", "text/plain" },

{ ".asd", "application/astound" },

{ ".asf", "video/x-ms-asf" },

{ ".asn", "application/astound" },

{ ".asp", "application/x-asap" },

{ ".asr", "video/x-ms-asf" },

{ ".asx", "video/x-ms-asf" },

{ ".au", "audio/basic" },

{ ".avb", "application/octet-stream" },

{ ".avi", "video/x-msvideo" },

{ ".awb", "audio/amr-wb" },

{ ".axs", "application/olescript" },

{ ".bas", "text/plain" },

{ ".bcpio", "application/x-bcpio" },

{ ".bin ", "application/octet-stream" },

{ ".bld", "application/bld" },

{ ".bld2", "application/bld2" },

{ ".bmp", "image/bmp" },

{ ".bpk", "application/octet-stream" },

{ ".bz2", "application/x-bzip2" },

{ ".c", "text/plain" },

{ ".cal", "image/x-cals" },

{ ".cat", "application/vnd.ms-pkiseccat" },

{ ".ccn", "application/x-cnc" },

{ ".cco", "application/x-cocoa" },

{ ".cdf", "application/x-cdf" },

{ ".cer", "application/x-x509-ca-cert" },

{ ".cgi", "magnus-internal/cgi" },

{ ".chat", "application/x-chat" },

{ ".class", "application/octet-stream" },

{ ".clp", "application/x-msclip" },

{ ".cmx", "image/x-cmx" },

{ ".co", "application/x-cult3d-object" },

{ ".cod", "image/cis-cod" },

{ ".conf", "text/plain" },

{ ".cpio", "application/x-cpio" },

{ ".cpp", "text/plain" },

{ ".cpt", "application/mac-compactpro" },

{ ".crd", "application/x-mscardfile" },

{ ".crl", "application/pkix-crl" },

{ ".crt", "application/x-x509-ca-cert" },

{ ".csh", "application/x-csh" },

{ ".csm", "chemical/x-csml" },

{ ".csml", "chemical/x-csml" },

{ ".css", "text/css" },

{ ".cur", "application/octet-stream" },

{ ".dcm", "x-lml/x-evm" },

{ ".dcr", "application/x-director" },

{ ".dcx", "image/x-dcx" },

{ ".der", "application/x-x509-ca-cert" },

{ ".dhtml", "text/html" },

{ ".dir", "application/x-director" },

{ ".dll", "application/x-msdownload" },

{ ".dmg", "application/octet-stream" },

{ ".dms", "application/octet-stream" },

{ ".doc", "application/msword" },

{ ".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document" },

{ ".dot", "application/msword" },

{ ".dvi", "application/x-dvi" },

{ ".dwf", "drawing/x-dwf" },

{ ".dwg", "application/x-autocad" },

{ ".dxf", "application/x-autocad" },

{ ".dxr", "application/x-director" },

{ ".ebk", "application/x-expandedbook" },

{ ".emb", "chemical/x-embl-dl-nucleotide" },

{ ".embl", "chemical/x-embl-dl-nucleotide" },

{ ".eps", "application/postscript" },

{ ".epub", "application/epub+zip" },

{ ".eri", "image/x-eri" },

{ ".es", "audio/echospeech" },

{ ".esl", "audio/echospeech" },

{ ".etc", "application/x-earthtime" },

{ ".etx", "text/x-setext" },

{ ".evm", "x-lml/x-evm" },

{ ".evy", "application/envoy" },

{ ".exe", "application/octet-stream" },

{ ".fh4", "image/x-freehand" },

{ ".fh5", "image/x-freehand" },

{ ".fhc", "image/x-freehand" },

{ ".fif", "application/fractals" },

{ ".flr", "x-world/x-vrml" },

{ ".flv", "flv-application/octet-stream" },

{ ".fm", "application/x-maker" },

{ ".fpx", "image/x-fpx" },

{ ".fvi", "video/isivideo" },

{ ".gau", "chemical/x-gaussian-input" },

{ ".gca", "application/x-gca-compressed" },

{ ".gdb", "x-lml/x-gdb" },

{ ".gif", "image/gif" },

{ ".gps", "application/x-gps" },

{ ".gtar", "application/x-gtar" },

{ ".gz", "application/x-gzip" },

{ ".h", "text/plain" },

{ ".hdf", "application/x-hdf" },

{ ".hdm", "text/x-hdml" },

{ ".hdml", "text/x-hdml" },

{ ".hlp", "application/winhlp" },

{ ".hqx", "application/mac-binhex40" },

{ ".hta", "application/hta" },

{ ".htc", "text/x-component" },

{ ".htm", "text/html" },

{ ".html", "text/html" },

{ ".hts", "text/html" },

{ ".htt", "text/webviewhtml" },

{ ".ice", "x-conference/x-cooltalk" },

{ ".ico", "image/x-icon" },

{ ".ief", "image/ief" },

{ ".ifm", "image/gif" },

{ ".ifs", "image/ifs" },

{ ".iii", "application/x-iphone" },

{ ".imy", "audio/melody" },

{ ".ins", "application/x-internet-signup" },

{ ".ips", "application/x-ipscript" },

{ ".ipx", "application/x-ipix" },

{ ".isp", "application/x-internet-signup" },

{ ".it", "audio/x-mod" },

{ ".itz", "audio/x-mod" },

{ ".ivr", "i-world/i-vrml" },

{ ".j2k", "image/j2k" },

{ ".jad", "text/vnd.sun.j2me.app-descriptor" },

{ ".jam", "application/x-jam" },

{ ".jar", "application/java-archive" },

{ ".java", "text/plain" },

{ ".jfif", "image/pipeg" },

{ ".jnlp", "application/x-java-jnlp-file" },

{ ".jpe", "image/jpeg" },

{ ".jpeg", "image/jpeg" },

{ ".jpg", "image/jpeg" },

{ ".jpz", "image/jpeg" },

{ ".js", "application/x-javascript" },

{ ".jwc", "application/jwc" },

{ ".kjx", "application/x-kjx" },

{ ".lak", "x-lml/x-lak" },

{ ".latex", "application/x-latex" },

{ ".lcc", "application/fastman" },

{ ".lcl", "application/x-digitalloca" },

{ ".lcr", "application/x-digitalloca" },

{ ".lgh", "application/lgh" },

{ ".lha", "application/octet-stream" },

{ ".lml", "x-lml/x-lml" },

{ ".lmlpack", "x-lml/x-lmlpack" },

{ ".log", "text/plain" },

{ ".lsf", "video/x-la-asf" },

{ ".lsx", "video/x-la-asf" },

{ ".lzh", "application/octet-stream" },

{ ".m13", "application/x-msmediaview" },

{ ".m14", "application/x-msmediaview" },

{ ".m15", "audio/x-mod" },

{ ".m3u", "audio/x-mpegurl" },

{ ".m3url", "audio/x-mpegurl" },

{ ".m4a", "audio/mp4a-latm" },

{ ".m4b", "audio/mp4a-latm" },

{ ".m4p", "audio/mp4a-latm" },

{ ".m4u", "video/vnd.mpegurl" },

{ ".m4v", "video/x-m4v" },

{ ".ma1", "audio/ma1" },

{ ".ma2", "audio/ma2" },

{ ".ma3", "audio/ma3" },

{ ".ma5", "audio/ma5" },

{ ".man", "application/x-troff-man" },

{ ".map", "magnus-internal/imagemap" },

{ ".mbd", "application/mbedlet" },

{ ".mct", "application/x-mascot" },

{ ".mdb", "application/x-msaccess" },

{ ".mdz", "audio/x-mod" },

{ ".me", "application/x-troff-me" },

{ ".mel", "text/x-vmel" },

{ ".mht", "message/rfc822" },

{ ".mhtml", "message/rfc822" },

{ ".mi", "application/x-mif" },

{ ".mid", "audio/mid" },

{ ".midi", "audio/midi" },

{ ".mif", "application/x-mif" },

{ ".mil", "image/x-cals" },

{ ".mio", "audio/x-mio" },

{ ".mmf", "application/x-skt-lbs" },

{ ".mng", "video/x-mng" },

{ ".mny", "application/x-msmoney" },

{ ".moc", "application/x-mocha" },

{ ".mocha", "application/x-mocha" },

{ ".mod", "audio/x-mod" },

{ ".mof", "application/x-yumekara" },

{ ".mol", "chemical/x-mdl-molfile" },

{ ".mop", "chemical/x-mopac-input" },

{ ".mov", "video/quicktime" },

{ ".movie", "video/x-sgi-movie" },

{ ".mp2", "video/mpeg" },

{ ".mp3", "audio/mpeg" },

{ ".mp4", "video/mp4" },

{ ".mpa", "video/mpeg" },

{ ".mpc", "application/vnd.mpohun.certificate" },

{ ".mpe", "video/mpeg" },

{ ".mpeg", "video/mpeg" },

{ ".mpg", "video/mpeg" },

{ ".mpg4", "video/mp4" },

{ ".mpga", "audio/mpeg" },

{ ".mpn", "application/vnd.mophun.application" },

{ ".mpp", "application/vnd.ms-project" },

{ ".mps", "application/x-mapserver" },

{ ".mpv2", "video/mpeg" },

{ ".mrl", "text/x-mrml" },

{ ".mrm", "application/x-mrm" },

{ ".ms", "application/x-troff-ms" },

{ ".msg", "application/vnd.ms-outlook" },

{ ".mts", "application/metastream" },

{ ".mtx", "application/metastream" },

{ ".mtz", "application/metastream" },

{ ".mvb", "application/x-msmediaview" },

{ ".mzv", "application/metastream" },

{ ".nar", "application/zip" },

{ ".nbmp", "image/nbmp" },

{ ".nc", "application/x-netcdf" },

{ ".ndb", "x-lml/x-ndb" },

{ ".ndwn", "application/ndwn" },

{ ".nif", "application/x-nif" },

{ ".nmz", "application/x-scream" },

{ ".nokia-op-logo", "image/vnd.nok-oplogo-color" },

{ ".npx", "application/x-netfpx" },

{ ".nsnd", "audio/nsnd" },

{ ".nva", "application/x-neva1" },

{ ".nws", "message/rfc822" },

{ ".oda", "application/oda" },

{ ".ogg", "audio/ogg" },

{ ".oom", "application/x-AtlasMate-Plugin" },

{ ".p10", "application/pkcs10" },

{ ".p12", "application/x-pkcs12" },

{ ".p7b", "application/x-pkcs7-certificates" },

{ ".p7c", "application/x-pkcs7-mime" },

{ ".p7m", "application/x-pkcs7-mime" },

{ ".p7r", "application/x-pkcs7-certreqresp" },

{ ".p7s", "application/x-pkcs7-signature" },

{ ".pac", "audio/x-pac" },

{ ".pae", "audio/x-epac" },

{ ".pan", "application/x-pan" },

{ ".pbm", "image/x-portable-bitmap" },

{ ".pcx", "image/x-pcx" },

{ ".pda", "image/x-pda" },

{ ".pdb", "chemical/x-pdb" },

{ ".pdf", "application/pdf" },

{ ".pfr", "application/font-tdpfr" },

{ ".pfx", "application/x-pkcs12" },

{ ".pgm", "image/x-portable-graymap" },

{ ".pict", "image/x-pict" },

{ ".pko", "application/ynd.ms-pkipko" },

{ ".pm", "application/x-perl" },

{ ".pma", "application/x-perfmon" },

{ ".pmc", "application/x-perfmon" },

{ ".pmd", "application/x-pmd" },

{ ".pml", "application/x-perfmon" },

{ ".pmr", "application/x-perfmon" },

{ ".pmw", "application/x-perfmon" },

{ ".png", "image/png" },

{ ".pnm", "image/x-portable-anymap" },

{ ".pnz", "image/png" },

{ ".pot,", "application/vnd.ms-powerpoint" },

{ ".ppm", "image/x-portable-pixmap" },

{ ".pps", "application/vnd.ms-powerpoint" },

{ ".ppt", "application/vnd.ms-powerpoint" },

{ ".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation" },

{ ".pqf", "application/x-cprplayer" },

{ ".pqi", "application/cprplayer" },

{ ".prc", "application/x-prc" },

{ ".prf", "application/pics-rules" },

{ ".prop", "text/plain" },

{ ".proxy", "application/x-ns-proxy-autoconfig" },

{ ".ps", "application/postscript" },

{ ".ptlk", "application/listenup" },

{ ".pub", "application/x-mspublisher" },

{ ".pvx", "video/x-pv-pvx" },

{ ".qcp", "audio/vnd.qcelp" },

{ ".qt", "video/quicktime" },

{ ".qti", "image/x-quicktime" },

{ ".qtif", "image/x-quicktime" },

{ ".r3t", "text/vnd.rn-realtext3d" },

{ ".ra", "audio/x-pn-realaudio" },

{ ".ram", "audio/x-pn-realaudio" },

{ ".rar", "application/octet-stream" },

{ ".ras", "image/x-cmu-raster" },

{ ".rc", "text/plain" },

{ ".rdf", "application/rdf+xml" },

{ ".rf", "image/vnd.rn-realflash" },

{ ".rgb", "image/x-rgb" },

{ ".rlf", "application/x-richlink" },

{ ".rm", "audio/x-pn-realaudio" },

{ ".rmf", "audio/x-rmf" },

{ ".rmi", "audio/mid" },

{ ".rmm", "audio/x-pn-realaudio" },

{ ".rmvb", "audio/x-pn-realaudio" },

{ ".rnx", "application/vnd.rn-realplayer" },

{ ".roff", "application/x-troff" },

{ ".rp", "image/vnd.rn-realpix" },

{ ".rpm", "audio/x-pn-realaudio-plugin" },

{ ".rt", "text/vnd.rn-realtext" },

{ ".rte", "x-lml/x-gps" },

{ ".rtf", "application/rtf" },

{ ".rtg", "application/metastream" },

{ ".rtx", "text/richtext" },

{ ".rv", "video/vnd.rn-realvideo" },

{ ".rwc", "application/x-rogerwilco" },

{ ".s3m", "audio/x-mod" },

{ ".s3z", "audio/x-mod" },

{ ".sca", "application/x-supercard" },

{ ".scd", "application/x-msschedule" },

{ ".sct", "text/scriptlet" },

{ ".sdf", "application/e-score" },

{ ".sea", "application/x-stuffit" },

{ ".setpay", "application/set-payment-initiation" },

{ ".setreg", "application/set-registration-initiation" },

{ ".sgm", "text/x-sgml" },

{ ".sgml", "text/x-sgml" },

{ ".sh", "application/x-sh" },

{ ".shar", "application/x-shar" },

{ ".shtml", "magnus-internal/parsed-html" },

{ ".shw", "application/presentations" },

{ ".si6", "image/si6" },

{ ".si7", "image/vnd.stiwap.sis" },

{ ".si9", "image/vnd.lgtwap.sis" },

{ ".sis", "application/vnd.symbian.install" },

{ ".sit", "application/x-stuffit" },

{ ".skd", "application/x-Koan" },

{ ".skm", "application/x-Koan" },

{ ".skp", "application/x-Koan" },

{ ".skt", "application/x-Koan" },

{ ".slc", "application/x-salsa" },

{ ".smd", "audio/x-smd" },

{ ".smi", "application/smil" },

{ ".smil", "application/smil" },

{ ".smp", "application/studiom" },

{ ".smz", "audio/x-smd" },

{ ".snd", "audio/basic" },

{ ".spc", "application/x-pkcs7-certificates" },

{ ".spl", "application/futuresplash" },

{ ".spr", "application/x-sprite" },

{ ".sprite", "application/x-sprite" },

{ ".sdp", "application/sdp" },

{ ".spt", "application/x-spt" },

{ ".src", "application/x-wais-source" },

{ ".sst", "application/vnd.ms-pkicertstore" },

{ ".stk", "application/hyperstudio" },

{ ".stl", "application/vnd.ms-pkistl" },

{ ".stm", "text/html" },

{ ".svg", "image/svg+xml" },

{ ".sv4cpio", "application/x-sv4cpio" },

{ ".sv4crc", "application/x-sv4crc" },

{ ".svf", "image/vnd" },

{ ".svg", "image/svg+xml" },

{ ".svh", "image/svh" },

{ ".svr", "x-world/x-svr" },

{ ".swf", "application/x-shockwave-flash" },

{ ".swfl", "application/x-shockwave-flash" },

{ ".t", "application/x-troff" },

{ ".tad", "application/octet-stream" },

{ ".talk", "text/x-speech" },

{ ".tar", "application/x-tar" },

{ ".taz", "application/x-tar" },

{ ".tbp", "application/x-timbuktu" },

{ ".tbt", "application/x-timbuktu" },

{ ".tcl", "application/x-tcl" },

{ ".tex", "application/x-tex" },

{ ".texi", "application/x-texinfo" },

{ ".texinfo", "application/x-texinfo" },

{ ".tgz", "application/x-compressed" },

{ ".thm", "application/vnd.eri.thm" },

{ ".tif", "image/tiff" },

{ ".tiff", "image/tiff" },

{ ".tki", "application/x-tkined" },

{ ".tkined", "application/x-tkined" },

{ ".toc", "application/toc" },

{ ".toy", "image/toy" },

{ ".tr", "application/x-troff" },

{ ".trk", "x-lml/x-gps" },

{ ".trm", "application/x-msterminal" },

{ ".tsi", "audio/tsplayer" },

{ ".tsp", "application/dsptype" },

{ ".tsv", "text/tab-separated-values" },

{ ".ttf", "application/octet-stream" },

{ ".ttz", "application/t-time" },

{ ".txt", "text/plain" },

{ ".uls", "text/iuls" },

{ ".ult", "audio/x-mod" },

{ ".ustar", "application/x-ustar" },

{ ".uu", "application/x-uuencode" },

{ ".uue", "application/x-uuencode" },

{ ".vcd", "application/x-cdlink" },

{ ".vcf", "text/x-vcard" },

{ ".vdo", "video/vdo" },

{ ".vib", "audio/vib" },

{ ".viv", "video/vivo" },

{ ".vivo", "video/vivo" },

{ ".vmd", "application/vocaltec-media-desc" },

{ ".vmf", "application/vocaltec-media-file" },

{ ".vmi", "application/x-dreamcast-vms-info" },

{ ".vms", "application/x-dreamcast-vms" },

{ ".vox", "audio/voxware" },

{ ".vqe", "audio/x-twinvq-plugin" },

{ ".vqf", "audio/x-twinvq" },

{ ".vql", "audio/x-twinvq" },

{ ".vre", "x-world/x-vream" },

{ ".vrml", "x-world/x-vrml" },

{ ".vrt", "x-world/x-vrt" },

{ ".vrw", "x-world/x-vream" },

{ ".vts", "workbook/formulaone" },

{ ".wav", "audio/x-wav" },

{ ".wax", "audio/x-ms-wax" },

{ ".wbmp", "image/vnd.wap.wbmp" },

{ ".wcm", "application/vnd.ms-works" },

{ ".wdb", "application/vnd.ms-works" },

{ ".web", "application/vnd.xara" },

{ ".wi", "image/wavelet" },

{ ".wis", "application/x-InstallShield" },

{ ".wks", "application/vnd.ms-works" },

{ ".wm", "video/x-ms-wm" },

{ ".wma", "audio/x-ms-wma" },

{ ".wmd", "application/x-ms-wmd" },

{ ".wmf", "application/x-msmetafile" },

{ ".wml", "text/vnd.wap.wml" },

{ ".wmlc", "application/vnd.wap.wmlc" },

{ ".wmls", "text/vnd.wap.wmlscript" },

{ ".wmlsc", "application/vnd.wap.wmlscriptc" },

{ ".wmlscript", "text/vnd.wap.wmlscript" },

{ ".wmv", "audio/x-ms-wmv" },

{ ".wmx", "video/x-ms-wmx" },

{ ".wmz", "application/x-ms-wmz" },

{ ".wpng", "image/x-up-wpng" },

{ ".wps", "application/vnd.ms-works" },

{ ".wpt", "x-lml/x-gps" },

{ ".wri", "application/x-mswrite" },

{ ".wrl", "x-world/x-vrml" },

{ ".wrz", "x-world/x-vrml" },

{ ".ws", "text/vnd.wap.wmlscript" },

{ ".wsc", "application/vnd.wap.wmlscriptc" },

{ ".wv", "video/wavelet" },

{ ".wvx", "video/x-ms-wvx" },

{ ".wxl", "application/x-wxl" },

{ ".x-gzip", "application/x-gzip" },

{ ".xaf", "x-world/x-vrml" },

{ ".xar", "application/vnd.xara" },

{ ".xbm", "image/x-xbitmap" },

{ ".xdm", "application/x-xdma" },

{ ".xdma", "application/x-xdma" },

{ ".xdw", "application/vnd.fujixerox.docuworks" },

{ ".xht", "application/xhtml+xml" },

{ ".xhtm", "application/xhtml+xml" },

{ ".xhtml", "application/xhtml+xml" },

{ ".xla", "application/vnd.ms-excel" },

{ ".xlc", "application/vnd.ms-excel" },

{ ".xll", "application/x-excel" },

{ ".xlm", "application/vnd.ms-excel" },

{ ".xls", "application/vnd.ms-excel" },

{ ".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },

{ ".xlt", "application/vnd.ms-excel" },

{ ".xlw", "application/vnd.ms-excel" },

{ ".xm", "audio/x-mod" },

{".xml","text/plain"},

{".xml","application/xml"}, [1]

{ ".xmz", "audio/x-mod" },

{ ".xof", "x-world/x-vrml" },

{ ".xpi", "application/x-xpinstall" },

{ ".xpm", "image/x-xpixmap" },

{ ".xsit", "text/xml" },

{ ".xsl", "text/xml" },

{ ".xul", "text/xul" },

{ ".xwd", "image/x-xwindowdump" },

{ ".xyz", "chemical/x-pdb" },

{ ".yz1", "application/x-yz1" },

{ ".z", "application/x-compress" }, [1]

{ ".zac", "application/x-zaurus-zac" },

{ ".zip", "application/zip" },

{ ".json", "application/json" },

传输编码

内容传输编码（Content-Transfer-Encoding），这个区域使指定ASCII以外的字符编码方式成为可能。形式如下：

Content-Transfer-Encoding: [mechanism]

其中，mechanism的值可以指定为“7bit”，“8bit”，“binary”，“quoted-printable”，“base64”。

7bit

7bit这里指的是7位的ASCII编码方式。

8bit

8位元ASCII码。

binary

quoted-printable

因为欧洲的一些文字和ASCII字符集中的某些字符有部分相同。如果邮件消息使用的是这些语言的话，于ASCII重叠的那些字符可以原样使用，ASCII字符集中不存在的字符采用形如“=??”的方法编码。这里“??”需要用将字符编码后的16进制数字来指定。采用quoted-printable编码的消息，长度不会变得太长，而且大部分都是ASCII中的字符，即使不通过解码也大致可以读懂消息的内容。

base64

base64是一种将二进制的01序列转化成ASCII字符的编码方法。编码后的文本或者二进制消息，就可以运用SMTP等只支持ASCII字符的协议传送了。Base64一般被认为会平均增加33%的报文长度，而且，经过编码的消息对于人类来说是不可读的。

x-encodingname

这个值是预留的扩展。

response.setContentType