You can do it through a servlet. Below is an example of the servlet code. Do
not forget to declare the servlet in web.xml.
*import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class UploadServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* Accepts a Http request parameters and post a file to UforgeBuilder
end
* point. Used to upload profile picture.
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse
resp) throws ServletException, IOException {
try {
// Check that we have a file upload request
boolean isMultipart =
ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// Parse the request
List<?> /* FileItem */items = upload.parseRequest(request);
// Process the uploaded items
Iterator<?> iter = items.iterator();
File uploadedFile = null;
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
/* text field */
// here you can retrieve text fields
if (item.isFormField()) {
if (item.getFieldName().equals("xxxx")) String
field1 = item.getString();
else if (item.getFieldName().equals("xxxx")) String
field2 = item.getString();
}
/* upload file field */
else {
if (!item.getName().isEmpty()) {
String fileName = item.getName();
String
folder=this.getServletContext().getRealPath(Config.UPLOAD_DIRECTORY);
File uploadDirectory = new File(folder);
if (!uploadDirectory.exists())
uploadDirectory.mkdirs();
uploadedFile = new File(uploadDirectory,
fileName);
item.write(uploadedFile);
}
}
// now you can handle the file "uploadedFile"
}
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
*
-----------------------------------------------------------------------------------------------
Le lundi 16 septembre 2013 20:07:07 UTC+1, Pradeep Kumar a écrit :
>
>
>
>
>
>
>
>
>
>
>
> Hi All,
>
> I am new to GWT, I am facing some issue with file creation.
>
> I am uploading a file from client side and want to store that file in
> server side and parse it and create tables in database for the data present
> in the file.
>
> When I try to create a file at server side there is some file.iopermission
> issue App engine is not allowing me to create the file.
>
> Please let me know how can I solve this issue.
>
> I did browse net, didn't find any solutions.
>
> In the mean time I did read about sandboxing and some data store concept
>
> Please let me know how can I use for my problem.
>
> Thanks in Advance, Pradeep
>
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