java - how to uploaded and read text file in jsf and primeface? -

i need upload , read text file primeface , jsf. question when uploaded text file, stored? here .xhtml , java class:

<p:messages showdetail="true" />      <p:fileupload value="#{send.file }" mode="simple" />     </h:form>     <p:commandbutton actionlistener="#{send.upload}"  value="send" ajax="false" />       //send.java       private uploadedfile file;       public void upload() {       if(file != null) {           facesmessage msg = new facesmessage("succesful", file.getfilename() + " uploaded.");           facescontext.getcurrentinstance().addmessage(null, msg);       } 

i found example read file:

    import java.io.bufferedreader;     import java.io.filereader;     import java.io.ioexception;      public class bufferedreaderexample {  public static void main(string[] args) {      try (bufferedreader br = new bufferedreader(new filereader("c:\\testing.txt")))     {          string scurrentline;          while ((scurrentline = br.readline()) != null) {             system.out.println(scurrentline);         }      } catch (ioexception e) {         e.printstacktrace();     }   } 

}

my question in example "c:\testing.txt" given path? address must give read uploaded file? 'm sorry if confused you, thank you.

when uploaded text file, stored?

this none of business , should not interested in inside jsf backing bean code. it's stored (partial) in memory and/or (partial) in server's temporary storage location wiped/cleaned @ intervals. it's absolutely not intented permanent storage location. should in action/listener method read uploaded file content , store in permanent storage location choice.

e.g.

private static final file location = new file("/path/to/all/uploads");  public void upload() throws ioexception {     if (file != null) {         string prefix = filenameutils.getbasename(file.getname());          string suffix = filenameutils.getextension(file.getname());         file save = file.createtempfile(prefix + "-", "." + suffix, location);         files.write(save.topath(), file.getcontents());         // add success message here.     } } 

note filenameutils part of apache commons io should have installed it's required dependency of <p:fileupload>. note file#createtempfile() in above example not generate temp file, it's been used generate unique filename. otherwise, when else coincidentally uploads file same name existing one, overwritten. note files#write() part of java 7. if you're still on java 6 or older, grab apache commons io ioutils instead.