Struts2 Single File upload/multiple file upload

1 importing Struts2-blank.war all jar packages: \struts-2.3.4\apps\struts2-blank.war

Single File Upload

upload.jsp

<s:form action= "Upload2.action" method= "POST" theme= "simple" enctype= "Multipart/form-data" ><tr>       <TD id= "More" >              Select Upload file:<s:file name= "file" ></s:file><br>             <s:submit Type= "button" value= "Submit"/>         </td>  </tr></s:form>

Struts.xml

<Packageextends= "Struts-default" >    <action name= "upload2"class= " Com.hloytax.wg.upload?. UploadAction1 ">           <result name=" Success ">/success.jsp</result>            <interceptor-ref name=" FileUpload ">                 <param name=" MaximumSize ">409600</param>//Upload file Size settings                //<!--allowedtypes (optional )-comma-separated list of contentType types (e.g. text/html), <param name= "ContentType" > Application/txt; </param>
            <param name= "Allowedtypes" >                 </param>             </interceptor-ref>             <interceptor-ref Name = "Defaultstack" ></interceptor-ref>        </action>   </Package >

Uploadaction1.action

 Public classUploadAction1extendsActionsupport {/**     *      */    Private Static Final LongSerialversionuid = 1L; Privatefile file; //file name    PrivateString Filefilename; //File Type    PrivateString Filecontenttype; //Note: The name prefix of the file name and file type must be the same,    omit Get Set method@Override PublicString Execute ()throwsexception{//get the file path of the file you want to uploadFile uploadfile=NewFile (Servletactioncontext.getservletcontext (). Getrealpath ("UploadFile")); //determine if the file is uploaded, and if it is uploaded, the directory will be created.        if(!uploadfile.exists ()) {Uploadfile.mkdir ();//Create the directory        }                    /*//First File Upload method//Declare file input stream, specify file path for input stream FileInputStream input=new fileinputstream (file);                    Gets the output stream, gets the file address and name of the file FileOutputStream out=new fileoutputstream (uploadfile + "\ \" +filefilename);              try{byte[] B=new byte[1024];//the size of each write int i=0;              while ((I=input.read (b)) >0) {out.write (b,0,i);          }}catch (Exception e) {e.printstacktrace ();              }finally{Input.close ();          Out.close (); }            */                            //the second method of uploading files//fileutils.copyfile (file,new file (uploadfile+ "\ \" +filefilename)); //fileutils.copyfile (file,new file (uploadfile,filefilename)); //System.out.println (UploadFile); //The third method ofBufferedReader breader=NewBufferedReader (NewInputStreamReader (Newfileinputstream (file)); BufferedWriter Bwriter=NewBufferedWriter (NewOutputStreamWriter (NewFileOutputStream (uploadfile+ "\ \" +( filefilename)));         System.out.println (UploadFile); Try{            Char[] str=New Char[1024]; intI=0;  while((I=breader.read (str)) >0) {bwriter.write (str,0, i); }        }Catch(Exception e) {e.printstacktrace (); }finally{breader.close ();            Bwriter.close ();        Uploadfile.delete (); }                    returnSUCCESS; }    

Xml

<?xml version= "1.0" encoding= "UTF-8"? ><web-app xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"     xmlns= "Http://java.sun.com/xml/ns/javaee"    xsi:schemalocation= "http://java.sun.com/xml/ Ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd "    id=" webapp_id "version=" 2.5 ">    <filter>        <filter-name>struts2</filter-name>        <filter-class> org.apache.struts2.dispatcher.ng.filter.strutsprepareandexecutefilter</filter-class>    </filter>    <filter-mapping>        <filter-name>struts2</filter-name>        < url-pattern>/*</url-pattern>    </filter-mapping></web-app>

Multiple file uploads:

PrivateList<file>file;PrivateList<string>Filecontenttype;PrivateList<string>Filefilename;
private String Savepath;Omit get Set method upload method reference single File upload
@Override
Public String Execute () throws Exception {
List<file> files= getFile ();
if (Files!=null) {
for (int i = 0; i < files.size (); i++) {
FileOutputStream fos = new FileOutputStream (Getsavepath () + "\ \" + getfilefilename (). get (i));
Create an input stream to upload files
System.out.println (Getsavepath ());
FileInputStream fis = new FileInputStream (Files.get (i));

byte[] buffer = new byte[1024];
int len = 0;
while (len = fis.read (buffer)) > 0) {
Fos.write (buffer, 0, Len);
}
Fis.close ();
Fos.close ();
}
}
return SUCCESS;

}

/**
* Returns the location where the uploaded file was saved
*
* @return
* @throws Exception
*/
Public String Getsavepath () throws Exception {
Return Servletactioncontext.getservletcontext (). Getrealpath (Savepath);
}
public void Setsavepath (String savepath) {
This.savepath = Savepath;
}

Struts2 Single File upload/multiple file upload