Java 实现浏览器下载文件及文件预览

Java 实现浏览器下载文件及文件预览

插曲想记录一下，以后可以来粘贴复制用。

一、浏览器下载文件

setContentType() 该实体头的作用是让服务器告诉浏览器它发送的数据属于什么文件类型。

没有缓存

response.addHeader("Pargam", "no-cache");

response.addHeader("Cache-Control", "no-cache");

public static void setResponseHeader(HttpServletResponse response, String name) {

try {

name = new String(name.getBytes(), "ISO8859-1");

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

response.setContentType("application/docx");

//要保存的文件名

response.setHeader("Content-Disposition", "attachment;filename=" + name + ".docx");

response.addHeader("Pargam", "no-cache");

response.addHeader("Cache-Control", "no-cache");

}

二、浏览器预览文件只需要把下面这行注释就好

response.setHeader("Content-Disposition", "attachment;filename=" + name + ".docx");

setContentType() 中的参数选择：

文件扩展名

Content-Type(Mime-Type)

文件扩展名

Content-Type(Mime-Type)

.*（ 二进制流，不知道下载文件类型）

application/octet-stream

.tif

image/tiff

.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

.

application/x-

.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

KLLOvV 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

KLLOvV .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

.sis

application/vnd.symbian.install

.sisx

application/vnd.symbian.install

.x_t

application/x-x_t

.ipa

application/vnd.iphone

.apk

application/vnd.android.package-archive

.xap

application/x-silverlight-app

Java 后台字符串以txt文件响应到浏览器进行下载

String fileName = "短信模版.txt";

OutputStream os = null;

try {

response.reset();

response.setContentType("application/octet-stream; charset=utf-8");

response.setHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes(),"ISO8859-1"));

byte[] bytes = sb.toString().getBytes("GBK");

os = response.getOutputStream();

// 将字节流传入到响应流里,响应到浏览器

os.write(bytes);

os.close();

} catch (Exception ex) {

logger.error("导出失败:", ex);

throw new RuntimeException("导出失败");

}finally {

try {

if (null != os) {

os.close();

}

} catch (IOException ioEx) {

logger.error("导出失败:", ioEx);

}

}

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