1、javaweb之文件上傳import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import mons.fileupload.fileitem; import mons.fileupload.disk.diskfileitemfactory; import mons.fileupload.servlet.servletfileupload; public class fileuploadservlet extends httpservlet private serv

2、letcontext sc; private string savepath; private ic final long serialversionuid = 151650843430214502l; public void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception dopost(request, response); public void dopost(httpservletrequest request, httpservlet

3、response response) throws servletexception, ioexception request.characterencoding( utf-8 ); diskfileitemfactory factory = new diskfileitemfactory(); servletfileupload servletfileupload = new servletfileupload(factory);/通過工廠生成一個處理文件上傳的servlet對象 try list items = servletfileupload.parserequest(request)

4、;/解析request iterator iterator = items.iterator(); while (iterator.hasnext() fileitem item = (fileitem) iterator.next(); if(item.isformfield()/表單的參數字段 system.out.println( 表單的參數名稱： +item.getfieldname()+ ,表單的參數值： +item.getstring( utf-8 ); ee if(item.getname()!=null !item.getname().equals( )/一個上傳的文件 sys

5、tem.out.println( 文件的名稱： +item.getname(); system.out.println( 文件的大小： +item.getsize(); system.out.println( 文件的類型： +item.getcontenttype(); file tempfile = new file(item.getname();/getname得到的文件名稱包含了它在客戶端的路徑 file file = new file(sc.getrealpath( / )+savepath,tempfile.getname(); item.(file);/將上傳的文件寫入到file中

6、 request.setattribute( message , 上傳文件勝利！ ); else request.setattribute( message , 沒有挑選上傳文件！ ); ch (exception e) e.printstacktrace(); request.setattribute( message , 上傳文件失敗！ ); request.getrequestdiser( /fileuploadresult.jsp ).forward(request, response);/轉向，輸出結果 override public void init(servletconfig

7、config) throws servletexception savepath = config.getinitparameter( savepath ); sc = config.getservletcontext(); 步驟三：修改web.xml ?xml version= 1.0 encoding= utf-8 ? web-app xmlns:xsi= /2001/xmlschema-instance xmlns= xmlns:web= xsi:schemalocation= version= 2.5 display-name /display-name

8、 servlet description this is the description of my j2ee component /description display-name this is the display name of my j2ee component /display-name servlet-name fileuploadservlet /servlet-name servlet-class com.yinger.servlet.fileuploadservlet /servlet-class init-param !- servlet的初始化參數，配置上傳文件的保存路徑，這里