Ajax应用常见的HTTP ContentType设置
Ajax应用常见的HTTP ContentType设置
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ajax开发中, 常遇到下面的几种情况:
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1 服务端需要返回一段普通文本给客户端?
2 服务端需要返回一段HTML代码给客户端?
3 服务端需要返回一段XML代码给客户端?
4 服务端需要返回一段javascript代码给客户端?
5 服务端需要返回一段json串给客户端
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对于每一种返回类型，规范的做法是要在服务端指定 response的contentType。
(当然 不指定绝大多数情况下也没什么问题 尤其是返回"非xml"的时候)
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代码?
? ? 普通文本 : text/plain
? ? HTML代码 : text/html
? ? XML代码 : text/xml
以上三个可以说是毫无争议的, 但是另外两种情况 就要注意一下了.?
javascript 的 contentType 按最标准的写法 应该是 application/javascript.?
而常用的 text/javascript 已经被 rfc定义为废弃的.?
但是，在这里暂时不建议使用 application/javascript
因为很多老旧浏览器并不支持 application/javascript?
而所有浏览器都支持 text/javascript.?
在标准和广泛的兼容性之间 还是暂且选择后者吧.
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json 的 contentType 常见写法有: text/json & text/javascript .?
但是 这个 text/json 其实是根本不存在的, 而 text/javascript 在有些时候客户端处理起来会有歧义.?
对于json的contentType , rfc里定义的标准写法是 :application/json.
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在这里毫无疑问 我们应该选择标准写法的 application/json
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最后，附一下ContentType清单：
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常用的：
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[java] view plaincopy
text/plain ??
text/HTML ?
text/xml ?
test/javascript ?
application/json ?
image/GIF ?
image/JPEG ?
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清单：
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[java] view plaincopy
".*"="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" ??
".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" ??
".cut"="application/x-cut" ??
".dbf"="application/x-dbf" ??
".dbm"="application/x-dbm" ??
".dbx"="application/x-dbx" ??
".dcd"="text/xml" ??
".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" ??
".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" ??
".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" ??
".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" ??
".html"="text/html" ??
".htt"="text/webviewhtml" ??
".htx"="text/html" ??
".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" ??
".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" ??
".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" ??
".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" ??
".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" ?
