To download a file from server location.
In controller class call downloadFileFromServer method on any event.
//on button click in process form request
//call this method
downloadFileFromServer(
pageContext,--pagecontext
"/xx/xxx/ssss/120devg.pdf",--full file path with file name and ext
"120devg.pdf" --file name with extension
);
After process form request copy below methods in controller class,
/**
* @param pageContext the current OA page context
* @param file_name_with_path - this is fully qualified file name with its path on unix application
* server. eg "/xxcrp/xxapplcrp/mukul/abc.pdf"
* @param file_name_with_ext - this is file name with extension, you wanna display user
* for download. eg- i wanna display the abc.pdf file download with name five_point_someone.pdf
* then I can pass this as "five_point_someone.pdf"
*/
public void downloadFileFromServer(OAPageContext pageContext,
String file_name_with_path,
String file_name_with_ext) {
HttpServletResponse response = (HttpServletResponse) pageContext.getRenderingContext().getServletResponse();
if (((file_name_with_path == null) || ("".equals(file_name_with_path)))){
throw new OAException("File path is invalid.");
}
File fileToDownload = null;
try{
fileToDownload = new File(file_name_with_path);
}catch (Exception e){
throw new OAException("Invalid File Path or file does not exist.");
}
if (!fileToDownload.exists()){
throw new OAException("File does not exist.");
}
if (!fileToDownload.canRead()){
throw new OAException("Not Able to read the file.");
}
String fileType = "application/pdf";
response.setContentType(fileType);
response.setContentLength((int)fileToDownload.length());
response.setHeader("Content-Disposition", "attachment; filename=\"" + file_name_with_ext + "\"");
InputStream in = null;
ServletOutputStream outs = null;
try{
outs = response.getOutputStream();
in = new BufferedInputStream(new FileInputStream(fileToDownload));
int ch;
while ((ch = in.read()) != -1){
outs.write(ch);
}
}catch (IOException e){
// TODO
e.printStackTrace();
}finally{
try{
outs.flush();
outs.close();
if (in != null){
in.close();
}
}catch (Exception e){
e.printStackTrace();
}
}
}
Source:
http://mukx.blogspot.com/search?q=downloadFileFromServer
