Uploading csv files and reading them from server

Question

I want to read a csv file.From Flex i am able to select the
file but when i pass it to the server using struts
FileUploadInterceptor , am not able to pass the file to the
server.FileUploadInterceptor in struts2 processes the request only
if its instance of MultiPartRequestWrapper.Is there any way in Flex
where i can pass the request as a instance of this.Is there any
other way in which i can read the file from the server after
uploading it through flex.Code is as follows :
1)MXML File :
?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Script>
<![CDATA[
import ImportData;
import flash.net.FileReference;
import flash.net.FileFilter;
import flash.events.IOErrorEvent;
[Bindable] var fileRef:FileReference = new FileReference();
private function openFileDialog():void{
fileRef.addEventListener(Event.SELECT, selectHandler);
fileRef.addEventListener(Event.COMPLETE, completeHandler);
fileRef.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA
,uploadCompleteHandler);
fileRef.addEventListener(IOErrorEvent.IO_ERROR,onIOError);
try{
var textTypes:FileFilter = new FileFilter("Text Files
(*.txt,*.csv)","*.txt;*.csv");
var allTypes:Array = new Array(textTypes);
//var success:Boolean = fileRef.browse();
var success:Boolean = fileRef.browse(allTypes);
catch(error:Error){
trace("Unable to browse for files.");
private function onIOError(event:IOErrorEvent):void {
trace("In here"+event.text);
trace("In here"+event.toString());
// when a file is selected you upload the file to the upload
script on the server
private function selectHandler(event:Event):void{
//var request:URLRequest = new URLRequest("/importAction");
var request:URLRequest = new URLRequest("
http://localhost:8080/pack1/importAction.action");
try
fileRef.upload(request);
catch (error:Error)
trace("Unable to upload file.");
private function completeHandler(event:Event):void{
trace("uploaded");
// dispatched when file has been uploaded to the server
script and a response is returned from the server
// event.data contains the response returned by your server
script
public function uploadCompleteHandler(event:DataEvent):void
trace("uploaded... response from server: \n" +
String(event.data));
]]>
</mx:Script>
<mx:Button label="Import" id="importBtn"
click="openFileDialog()" height="20" width="90"
styleName="buttonsOnSearchBar"/>
<mx:ComboBox x="23" y="44" borderColor="#ff0000"
themeColor="#ff0000"></mx:ComboBox>
</mx:Application>
2)struts.xml file
<struts>
<package name="pack1"
extends="struts-default,json-default">
<global-results>
<result name="error" type="json"></result>
</global-results>
<global-exception-mappings>
<exception-mapping result="error"
exception="java.lang.Throwable"/>
</global-exception-mappings>
<action name="importAction"
class="routing.ImportAction">
<interceptor-ref name="fileUpload"/>
<interceptor-ref name="basicStack"/>
<result name="success" type="json"></result>
</action>
</package>
</struts>
3)Action Class
package com.om.dh.orderrouting.action;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.StringTokenizer;
import org.apache.log4j.Logger;
import com.opensymphony.xwork2.ActionSupport;
public class ImportAction extends ActionSupport{
private String contentType;
private File upload;
private String fileName;
private String caption;
private static final Logger logger =
Logger.getLogger(ImportAction.class);
@Override
public String execute() throws Exception {
* Read File Line by Line.. If the file has more than one
word separated by comma
* return error.
ArrayList<String> symbolList = new
ArrayList<String>();
try{
BufferedReader reader = new BufferedReader(new
FileReader(upload));
String line =null;
String symbol=null;
while((line=reader.readLine())!=null){
StringTokenizer tokenizer = new StringTokenizer(line,"\t");
symbol = tokenizer.nextToken();
if(symbol!=null) symbol = symbol.trim();
if(symbol.length()>0)
symbolList.add(symbol);
}catch(FileNotFoundException fne){
if(logger.isDebugEnabled())
logger.debug("File NotFount ", fne);
for(String symbol1:symbolList)
System.out.print(symbol1+" ");
return SUCCESS;
public String getUploadFileName() {
return fileName;
public void setUploadFileName(String fileName) {
this.fileName = fileName;
public String getUploadContentType() {
return contentType;
public void setUploadContentType(String contentType) {
this.contentType = contentType;
public File getUpload() {
return upload;
public void setUpload(File upload) {
this.upload = upload;
public String getCaption() {
return caption;
public void setCaption(String caption) {
this.caption = caption;
public String input() throws Exception {
return SUCCESS;
public String upload() throws Exception {
return SUCCESS;

Answer 1

quote:
Originally posted by:
ived
tried this but does not work...
var request:URLRequest = new URLRequest("
http://localhost:8080/pack1/importAction.action");
request.contentType="multipart/form-data";
in the interceptor it expects the request to be instanceof
MultiPartRequestWrapper...
Further the document says that FileReference.upload() and
FileReference.download() methods do not support the
URLRequest.contentType and URLRequest.requestHeaders parameters.
Any help ??