JSP implementation file upload (ii) implement file upload with Cos component

Last Update:2014-12-08 Source: Internet

Author: User

Tags cos

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JSP forms

<%@ page language= "java" pageencoding= "Utf-8"%>
Cos component implementation file upload JSP code
<%@ page language= "java" pageencoding= "utf-8"%><%@ pageImport= "Java.io.File"%><%@ pageImport= "Com.oreilly.servlet.multipart.FilePart"%><%@ pageImport= "Com.oreilly.servlet.multipart.ParamPart"%><%@ pageImport= "Com.oreilly.servlet.multipart.Part"%><%@ pageImport= "Com.oreilly.servlet.multipart.MultipartParser"%><%//using the Cos component to implement file uploadsMultipartparser MP =NewMultipartparser (Request, 10 * 1024 * 1024);    Part part; Mp.setencoding ("Utf-8");//depending on the source page encoding, if the position should be GBK, if the JSP should be Utf-8    intII = 0;  while(part = Mp.readnextpart ())! =NULL) {String name=Part.getname (); if(Part.isparam ()) {Parampart Parampart=(Parampart) part; String value=Parampart.getstringvalue (); Out.println ("Param:name=" + name + "; Value= "+value);        System.out.println (value); } Else if(Part.isfile ()) {Filepart Filepart=(Filepart) part; String FileName=Filepart.getfilename (); if(FileName! =NULL) {                LongSize = Filepart.writeto (NewFile ( This. Getservletcontext (). Getrealpath ("/upload"))); Out.println ("File:name=" + name + "; Filename= "+ FileName +", filepath= "+ filepart.getfilepath () +", contenttype= "+ fil Epart.getcontenttype () + ", size=" +size); }Else{out.println ("File:name=" + name + "; EMPTY ");        } out.print (FileName); }    }%>
File naming mechanism
1. According to the UUID
ImportJava.io.File;ImportJava.util.UUID;ImportCom.oreilly.servlet.multipart.FileRenamePolicy; Public classMyuuidImplementsFilerenamepolicy {@Override Publicfile Rename (file f) {String body=Uuid.randomuuid (). toString (); String ext= ""; intPot = F.getname (). LastIndexOf ("."); if(Pot! =-1) {ext=f.getname (). substring (pot); } String newName= Body +ext; F=NewFile (F.getparent (), newName); returnF; }}
2. According to the time random number
ImportJava.io.File;ImportJava.util.UUID;ImportCom.oreilly.servlet.multipart.FileRenamePolicy; Public classMyrandomImplementsFilerenamepolicy {@Override Publicfile Rename (file f) {String body=string.valueof (System.currenttimemillis ()); String ext= ""; intPot = F.getname (). LastIndexOf ("."); if(Pot! =-1) {ext=f.getname (). substring (pot); } String newName= Body +ext; F=NewFile (F.getparent (), newName); returnF; }}
Upload files and change names
<!DOCTYPE HTML><HTML>  <Head>    <MetaCharSet= "Utf-8">    <title>Cc.html</title>  </Head>    <Body>  <formAction= "cc.jsp"Method= "POST"enctype= "Multipart/form-data">Name:<inputtype= "text"name= "Uname"><BR>file 1:<inputtype= "File"name= "Ufile1"><BR>File 2:<inputtype= "File"name= "Ufile2"><BR> <inputtype= "Submit"value= "Submit">  </form>    </Body></HTML>
<% @pageImport= "com. Myrandom "%><%@ page language=" java "pageencoding=" utf-8 "%><%@ pageImport= "Com.oreilly.servlet.MultipartRequest"%><%@ pageImport= "Com.oreilly.servlet.multipart.DefaultFileRenamePolicy"%><%@ pageImport= "com. Myuuid "%><%@ pageImport= "Java.io.File"%><%//using the Cos component to implement file uploadsString Path = This. Getservletcontext (). Getrealpath ("/upload"); //multipartrequest req = new Multipartrequest (Request, Path, "Utf-8"); //Out.print (Req.getparameter ("uname")); //out.print ("//Out.print (Req.getfile ("Ufile1"). GetName ()); //Out.print (Req.getfile ("Ufile2"). GetName ()); //multipartrequest req = new Multipartrequest (request,path,10*1024*1024, "Utf-8", New Myuuid ());Multipartrequest req =NewMultipartrequest (request,path,10*1024*1024, "Utf-8",Newmyrandom ()); Out.print (Req.getfile ("Ufile1"). GetName ()); %>
JSP implementation file upload (ii) implement file upload with Cos component

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