Strut2 Single File Upload

2. First step: Load Commons-fileupload-1.2.1.jar, Commons-1.3.2.jar under Web-inf/lib. These two files are available for download from http://commons.apache.org/.
4. The second step: set the From table Enctype to: "Multipart/form-data", as follows:

   <enctype= "Multipart/form-data"  action= "${ Pagecontext.request.contextpath}/list.action "  method=" POST "      <input type = "File" name = "Uploadimage" > </ form >

5. Step Three: Add the following code to the action class:

    Packagecn.itcast.action;ImportJava.io.File;Importorg.apache.commons.io.FileUtils;ImportOrg.apache.struts2.ServletActionContext;ImportCom.opensymphony.xwork2.ActionContext; Public classhelloworldaction {PrivateFile image; PrivateString Imagefilename;  PublicString Getimagefilename () {returnImagefilename; }     Public voidsetimagefilename (String imagefilename) { This. Imagefilename =Imagefilename; }     PublicFile getImage () {returnimage; }     Public voidsetimage (File image) { This. Image =image; }     PublicString Addui () {return"Success"; }     PublicString Execute ()throwsexception{String Realpath= Servletactioncontext.getservletcontext (). Getrealpath ("/images");//the directory where the files are saved (the absolute path to the file)System.out.println (Realpath); if(image!=NULL) {File savefile=NewFile (NewFile (Realpath), imagefilename);//SaveFile is a full file path            if(!savefile.getparentfile (). exists ()) Savefile.getparentfile (). Mkdirs ();//Create a directory if the directory where the file is saved does not existFileutils.copyfile (image, SaveFile);//Call system function Copy file image to SaveFileActioncontext.getcontext (). Put ("message", "Upload succeeded"); }        return"Success"; }}

   The 4.struts.xml file configuration is as follows:

   <Struts>    <constantname= "Struts.enable.DynamicMethodInvocation"value= "false"/>    <!--control the size of file uploads -    <constantname= "Struts.multipart.maxSize"value= "10701096"/>        < Packagename= "Employee"extends= "Struts-default">        <Actionname= "List_*"class= "Cn.itcast.action.HelloWorldAction"Method= "{1}">            <resultname= "Success">/web-inf/page/message.jsp</result>        </Action>    </ Package></Struts>

Strut2 Single File Upload