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1. 核心代码
为宿迁等地区用户提供了全套网页设计制作服务,及宿迁网站建设行业解决方案。主营业务为网站建设、网站设计、宿迁网站设计,以传统方式定制建设网站,并提供域名空间备案等一条龙服务,秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求,就会得到认可,从而选择与我们长期合作。这样,我们也可以走得更远!
//设置Mime-Type
response.setContentType("application/msword");
//设置下载默认文件名
response.setHeader("Content-Disposition", "attachment;filename=123.doc");
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完整代码
public RObject download(@PathVariable String id, HttpServletResponse response) {
File uploadFile = new File(id + ".doc");
//获取后缀名
String suffix = uploadFile.substring(uploadFile.lastIndexOf("."));
String responseType = ResponseTypeUtils.getResponseContentByType(suffix);
response.setContentType(responseType);
response.setHeader("Content-Disposition", "attachment;filename=" + System.currentTimeMillis() + suffix);
//输入流,通过输入流读取文件内容
try (FileInputStream fileInputStream = new FileInputStream(uploadFile)) {
ServletOutputStream outputStream = response.getOutputStream();
int len;
byte[] bytes = new byte[1024];
while ((len = fileInputStream.read(bytes)) != -1) {
outputStream.write(bytes, 0, len);
//刷新一下
outputStream.flush();
}
//关闭资源
outputStream.close();
return R.ok();
} catch (Exception e) {
throw new RuntimeException(e.getMessage(), e);
}
}
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当然也可以通过NIO的方式实现代码,具体可参见HttpServletResponse 返回图片的几种方法对比,核心代码如下:
fis.getChannel().transferTo(0,fis.available(),Channels.newChannel(response.getOutputStream()));
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3 参考状态码
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
.docx application/msword .xlsx application/vnd.ms-excel
.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 .pptx application/vnd.ms-powerpoint
.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
.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
SDP话描述协议,为会话通知、会话邀请和其它形式的多媒体会话初始化等目的提供了多媒体会话描述,SDP 的设计宗旨是通用性,它可以应用于大范围的网络环境和应用程序,而不仅仅局限于组播会话目录,但 SDP 不支持会话内容或媒体编码的协商。【点击免费试用,0成本启动】
JavaScript(简称“JS”) 是一种具有函数优先的轻量级,解释型或即时编译型的编程语言。虽然它是作为开发Web页面的脚本语言而出名,但是它也被用到了很多非浏览器环境中,JavaScript 基于原型编程、多范式的动态脚本语言,并且支持面向对象、命令式、声明式、函数式编程范式。
JavaScript在1995年由Netscape公司的Brendan Eich,在网景导航者浏览器上首次设计实现而成。因为Netscape与Sun合作,Netscape管理层希望它外观看起来像Java,因此取名为JavaScript。但实际上它的语法风格与Self及Scheme较为接近。
想要了解更多关于这方面的相关信息,推荐咨询ZEGO即构科技。ZEGO即构科技自成立伊始,就专注自研音视频引擎,在音频前处理、网络自适应和跨平台兼容性等方面,达到国际一流水平,同时充分利用基础云服务商的能力,构建了MSDN海量有序自学习数据网络,服务覆盖全球,涵盖上百个音视频互动业务场景,单日时长突破30亿分钟。
1、Android应用
许多的 Android应用都是Java程序员开发者开发。虽然 Android运用了不同的JVM以及不同的封装方式,但是代码还是用Java语言所编写。相当一部分的手机中都支持JAVA游戏,这就使很多非编程人员都认识了JAVA。
2、在金融业应用的服务器程序
Java在金融服务业的应用非常广泛,很多第三方交易系统、银行、金融机构都选择用Java开发,因为相对而言,Java较安全 。大型跨国投资银行用Java来编写前台和后台的电子交易系统,结算和确认系统,数据处理项目以及其他项目。
3、网站
Java 在电子商务领域以及网站开发领域占据了一定的席位。开发人员可以运用许多不同的框架来创建web项目,SpringMVC,Struts2.0以及frameworks。
4、嵌入式领域
Java在嵌入式领域发展空间很大。在这个平台上,只需130KB就能够使用Java技术(在智能卡或者传感器上)。
5、大数据技术
Hadoop以及其他大数据处理技术很多都是用Java,例如Apache的基于Java的HBase和Accumulo以及 ElasticSearchas。
6、高频交易的空间
Java平台提高了这个平台的特性和即使编译,他同时也能够像 C++ 一样传递数据。正是由于这个原因,Java成为的程序员编写交易平台的语言,因为虽然性能不比C++,但开发人员可以避开安全性,可移植性和可维护性等问题。
7、科学应用
Java在科学应用中是很好选择,包括自然语言处理。最主要的原因是因为Java比C++或者其他语言相对其安全性、便携性、可维护性以及其他高级语言的并发性更好。
扩展资料:
java的用途已经数不胜数,举不胜举,拥有着无可比拟的能力,另外在节省时间和开发费用方面也十分可观,程序员可以借助java语言,自由的使用现有的硬件和软件系统平台,因为java是独立于任何平台的。具体应用领域总结如下:
第 1 个领域、桌面应用系统开发;
第 2 个领域、嵌入式系统开发;
第 3 个领域、电子商务系统开发;
第 4 个领域、企业级应用开发;
第 5 个领域、交互式系统开发;
第 6 个领域、多媒体系统开发;
第 7 个领域、分布式系统开发;
第 8 个领域、Web应用系统开发。
参考资料:
百度百科-Java
#{param} 这种是mybatis不是ibatis, ibatis是#param#这种形式
mybatis想传入多个参数时有多种方式
map形式:java代码为 selectWarn(param),其中param是HashMap类型
对象形式:java代码为 selectWarn(@Param("adcd") String adcd,@Param("startTime
") Date startTime 。。。)
请百度mybatis 多个参数
1、导入已经开发好的工程
从菜单的File--Import打开
选中General--Existing Projects into Workspace点Next按钮选择工程目录即可
2、plugin工程生成jar包
从菜单的File--Export打开
选中Plug-in Development--Deployable plug-ins and fragments点Next按钮选择需要生成jar包的工程,再选择Destination--Diretory中jar生成的目标目录即可。
另:也可直接从Project Explorer中选择工程右击选中Export导出单个工程
plugin工程有一个重要的文件META-INF/MANIFEST.MF如下
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: SdpS3 Storage Client Bundle
Bundle-SymbolicName: cosbench-sdps3
Bundle-Version: 0.4.1.0
Bundle-Vendor: intel
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
Bundle-ClassPath: .,
aspectjrt.jar,
aspectjweaver.jar,
commons-codec-1.3.jar,
commons-logging-1.1.1.jar,
freemarker-2.3.20.jar,
httpclient-4.3.6.jar,
jackson-core-asl-1.8.7.jar,
jackson-mapper-asl-1.8.7.jar,
mail-1.4.3.jar,
spring-beans-3.0.7.jar,
spring-context-3.0.7.jar,
spring-core-3.0.7.jar,
stax-1.2.0.jar,
stax-api-1.0.1.jar,
fluent-hc-4.3.6.jar,
httpclient-cache-4.3.6.jar,
httpmime-4.3.6.jar,
httpcore-4.3.3.jar,sdpjdk.jar
Import-Package: com.intel.cosbench.api.auth,
com.intel.cosbench.api.context,
com.intel.cosbench.api.storage,
com.intel.cosbench.config,
com.intel.cosbench.log
在Runtime页面增加需要引用到包会加到MANIFEST.MF的Bundle-ClassPath中,与手工修改MANIFEST.MF是一样的效果。
MANIFEST.MF的Build页面仅在eclipse编译时起作用,在export生成jar包时无法引用,必须在Runtime中也增加。如果编译时正常,但导出时报错,可以看plugin工程生成jar包生成时的错误日志,根据错误日志加入要引用的包即可。我的plugin工程为sds3.
3、普通工程生成jar包
从菜单的File--Export打开
选中java--JAR file生成普通的工程jar包,使用这种方法生成的包也可给plugin工程生成jar包引用。
示例:使用工程生成sdpjdk.jar的工具包,把sdpjdk.jar放到MANIFEST.MF文件中,那么插件sdps3工程就可以使用项目sdpjdk的文件导出了。但是在编译时我是通过sdps3--Properties--Java Build Path--Projects页面通过add引用sdpjdk项目,那样就可以方便看工具包sdpjdk的源码了。