I am having problems with the FileUpload in struts.
I am uploading an Excel File through browser and sending to Struts Action
Class, handling it with FormFile. I am casting this FormFile to
FileInputStream which is working fine.
But when I am deleting some of the rows in that excel file and uploading it
again its giving me a ClassCastException when converting the Form File to
FileInputStream.
I have no idea y its happening like this. Can any one help me with this?
Thanks
Here is the error I am getting
root cause
java.lang.ClassCastException
at rcsa.struts.ExcelFileUpload.execute(ExcelFileUpload.java:48)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:198)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:144)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:595)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:432)
******************************************************************************************
Here is the code
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import org.apache.struts.upload.FormFile;
import org.apache.struts.action.*;
import rcsa.poi.RcsaPOIEventListner;
import rcsa.exceptions.RcsaException;
import rcsa.dao.OpRiskSSheet;
import rcsa.misc.ErrorHandler;
public class ExcelFileUpload extends Action {
// --------------------------------------------------------- Instance
Variables
String target;
// --------------------------------------------------------- Methods
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws IOException,
ServletException,
RcsaException{
ActionMessages errors = new ActionMessages();
if(form != null){
ExcelFileUploadForm excelForm = (ExcelFileUploadForm)
form;
FormFile formFile = excelForm.getExcelFile();
InputStream in = (InputStream)
formFile.getInputStream();
FileInputStream fin = (FileInputStream) in;
errors.clear();
RcsaPOIEventListner.readExcelStream(fin);
//errors = new ErrorHandler(opSheet,
errors).checkErrors();
if(errors.isEmpty()){
target = "success";
}else{
target = "failure";
}
}else{
errors.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("UNABLE TO LOCATE THE
EXCEL FILE", false));
target = "failure";
}
saveErrors(request, errors);
return mapping.findForward(target);
}
}
**********************************************************************
import org.apache.struts.validator.ValidatorForm;
import org.apache.struts.upload.FormFile;
/**
[EMAIL PROTECTED]
*
*/
/**
*Form bean for File Upload.
*
*/
public class ExcelFileUploadForm extends ValidatorForm{
private FormFile excelFile;
/**
* @return Returns the theFile.
*/
public FormFile getExcelFile() {
return excelFile;
}
/**
* @param theFile The FormFile to set.
*/
public void setExcelFile(FormFile excelFile) {
this.excelFile = excelFile;
}
}
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