Download CSV file from Report with button in Oracle APEX

1：go to the report attributes,choose download setting all formats such as CSV,PDF, XLS, HTML,RTF etc. 2: set the item as 'submit page' 3: set the download button behavior : Action：Redirect to URL URL:f?p=&APP_ID.:8:&SESSION.:CSV:::P8_DEP_ID:&P8_DEP_ID. 4: If you want to change the downloaded name, go to the report attributes--download--filename