servlet上传文件注意事项

精品文档2016全新精品资料全新公文范文全程指导写作独家原创1/5SERVLET上传文件注意事项SERVLETSERVERAPPLET，全称JAVASERVLET，未有中文译文。是用JAVA编写的服务器端程序。下面小编为大家整理了关于SERVLET上传文件注意事项，希望能为你提供帮助准备阶段，下载需要的包在SERVLET中进行文件上传需要用到外部的类库，APACHE提供了这些类库,主要需要COMMONSFILEUPLOADJAR和COMMONSIOJAR下载的步骤如下进入WWWAPACHEORG网站,在PROJECTS下找到COMMONS，点击进入找到COMPONENTS下的FILEUPLOAD,点击进入就可以找到下载页面如下可以看到这里有开发指南和下载地址，如果要详细学习，慢慢看这里的资源就可以了。COMMONSIOJAR包的下载地址HTTP/COMMONSAPACHEORG/FILEUPLOAD/DEPENDENCIESHTML把两个JAR包放到WEBINF的LIB目录下。开发阶段上传页面INDEXJSP精品文档2016全新精品资料全新公文范文全程指导写作独家原创2/5STRINGPATHREQUESTGETCONTEXTPATHSTRINGBASEPATHREQUESTGETSCHEME”/”REQUESTGETSERVERNAME”REQUESTGETSERVERPORTPATH”/”这里注意第24行，上传文件时要指定提交方法METHOD“POST”,信息类型为ENCTYPE“MULTIPART/FORMDATA”上传功能SERVLETFILEUPLOADPACKAGECOMSUNFLOWERSERVLETIMPORTJAVAIOFILEIMPORTJAVAIOIOEXCEPTIONIMPORTJAVAUTILITERATORIMPORTJAVAUTILLISTIMPORTJAVAXSERVLETSERVLETEXCEPTIONIMPORTJAVAXSERVLETHTTPHTTPSERVLETIMPORTJAVAXSERVLETHTTPHTTPSERVLETREQUESTIMPORTJAVAXSERVLETHTTPHTTPSERVLETRESPONSEIMPORTORGAPACHECOMMONSFILEUPLOADFILEITEMIMPORTORGAPACHECOMMONSFILEUPLOADFILEITEMFACTORY精品文档2016全新精品资料全新公文范文全程指导写作独家原创3/5IMPORTORGAPACHECOMMONSFILEUPLOADFILEUPLOADEXCEPTIONIMPORTORGAPACHECOMMONSFILEUPLOADDISKDISKFILEITEMFACTORYIMPORTORGAPACHECOMMONSFILEUPLOADSERVLETSERVLETFILEUPLOADPUBLICCLASSFILEUPLOADEXTENDSHTTPSERVLETPROTECTEDVOIDDOPOSTHTTPSERVLETREQUESTREQ,HTTPSERVLETRESPONSERESPTHROWSSERVLETEXCEPTION,IOEXCEPTIONREQSETCHARACTERENCODING“UTF8”FILECONTROLREQ,RESP/上传文件的处理/PRIVATEVOIDFILECONTROLHTTPSERVLETREQUESTREQ,HTTPSERVLETRESPONSERESPTHROWSSERVLETEXCEPTION/在解析请求之前先判断请求类型是否为文件上传精品文档2016全新精品资料全新公文范文全程指导写作独家原创4/5类型BOOLEANISMULTIPARTSERVLETFILEUPLOADISMULTIPARTCONTENTREQ/文件上传处理工厂FILEITEMFACTORYFACTORYNEWDISKFILEITEMFACTORY/创建文件上传处理器SERVLETFILEUPLOADUPLOADNEWSERVLETFILEUPLOADFACTORY/开始解析请求信息LISTITEMSNULLTRYITEMSUPLOADPARSEREQUESTREQCATCHFILEUPLOADEXCEPTIONEEPRINTSTACKTRACE12免责声明本文仅代表作者个人观点,与本网无关。看完本文，记得打分哦很差差还行好很好很好下载