Struts File upload Download

Struts configuration file:

<?xml version= "1.0" encoding= "UTF-8"? ><!DOCTYPE Struts public"-//apache software foundation//dtd Struts Configuration 2.3//en" "Http://struts.apache.org/dtds/struts-2.3.dtd" > <struts> <constant name= "Struts.devmode" value= "true"/> <constant name= "Struts.ognl.allowStaticMetho Daccess "value=" true "></constant> < PackageName= "Default"extends= "Struts-default" > <action name= "Upload"class= "Com.itheima.action.UploadAction" method= "Upload" > <result>/1.jsp</result> <resul T name= "input" >/upload.jsp</result> <result name= "error" >/error.jsp</result> </a ction> <action name= "Download"class= "Com.itheima.action.UploadAction" method= "Download" > <result type= "Stream" > <param                Name= "ContentType" >application/octet-stream</param> <!--using the OGNL expression in the configuration file-- <param name= "contentdisposition" >attachment;filename=${@[email protected] (photofilename, ' UTF-8 ')}</ param> <param name= "InputName" >myInputStream</param> </result> </ Action> </ Package></struts>

Action method:

1  Packagecom.itheima.action;2 3 ImportJava.io.File;4 ImportJava.io.FileInputStream;5 Importjava.io.FileNotFoundException;6 ImportJava.io.FileOutputStream;7 ImportJava.io.InputStream;8 ImportJava.io.OutputStream;9 Ten ImportOrg.apache.struts2.ServletActionContext; One  A ImportCom.opensymphony.xwork2.ActionSupport; -  -  Public classUploadactionextendsActionsupport { the     PrivateFile photo; -     PrivateString Photofilename; -     PrivateString Photocontenttype; -     PrivateInputStream Myinputstream; +      -      +      PublicInputStream Getmyinputstream () { A         returnMyinputstream; at     } -  -      Public voidSetmyinputstream (InputStream myinputstream) { -          This. Myinputstream =Myinputstream; -     } -  in      PublicFile Getphoto () { -         returnphoto; to     } +  -      Public voidSetphoto (File photo) { the          This. Photo =photo; *     } $ Panax Notoginseng      PublicString Getphotofilename () { -         returnPhotofilename; the     } +  A      Public voidsetphotofilename (String photofilename) { the          This. Photofilename =Photofilename; +     } -  $      PublicString Getphotocontenttype () { $         returnPhotocontenttype; -     } -  the      Public voidSetphotocontenttype (String photocontenttype) { -          This. Photocontenttype =Photocontenttype;Wuyi     } the  -      PublicString Download ()throwsfilenotfoundexception{ WuPhotofilename = "cosmetic advertising. jpg"; -         //is Myinputstream assignment . AboutString storedirectory = Servletactioncontext.getservletcontext (). Getrealpath ("/files/plastic surgery ad. jpg"); $Myinputstream =NewFileInputStream (storedirectory); -      -         returnSUCCESS; -     } A      PublicString upload () { +         Try { theInputStream in =NewFileInputStream (photo); -String storedirectory = Servletactioncontext.getservletcontext (). Getrealpath ("/files"); $OutputStream out =NewFileOutputStream (storedirectory+ "/" +photofilename); the             intLen =-1; the             byteB[] =New byte[1024]; the              while((Len=in.read (b))!=-1){ theOut.write (b, 0, Len); -             } in in.close (); the out.close (); the             returnSUCCESS; About}Catch(Exception e) { the e.printstacktrace (); the             returnERROR; the         } +     } -}

JSP page:

    <s:form action= "Upload" enctype= "Multipart/form-data" >        <s:file label= "Liang Zhao" name= "Photo" ></s:file >        <s:submit value= "upload" ></s:submit>    </s:form>

Struts File upload Download