public boolean test() {
ExtendedService es = null;
boolean ok = true;
String tmpfilename = getParameter("tmpfile");
try {
// Lookup the javax.jnlp.ExtendedService object
es = (ExtendedService) ServiceManager.lookup("javax.jnlp.ExtendedService");
} catch (UnavailableServiceException ue) {
System.out.println(ue);
ue.printStackTrace();
// Service is not supported
ok = false;
}
if (!ok) return false;
// Open a specific file in the local machine
File tmpfile = new File(tmpfilename);
// Java Web Start will pop up a dialog asking the user to grant permission
// to read/write the file 'tempfile'
try {
FileContents fc_tmpfile = es.openFile(tmpfile);
if (!tmpfilename.equals(fc_tmpfile.getName())) {
System.out.println(
"\t tmpfile(out): "
+ tmpfilename
+ ", unequal to fc-filename: "
+ fc_tmpfile.getName()
+ " - info");
// ok=false;
// return ok;
}
if (!fc_tmpfile.canWrite()) {
System.out.println(
"\t outfile: " + tmpfilename + ", no write access (may not exist yet) - info");
}
// You can now use the FileContents object to read/write the file
java.io.OutputStream sout = fc_tmpfile.getOutputStream(true);
BufferedWriter bwsout = new BufferedWriter(new OutputStreamWriter(sout));
bwsout.write(datum, 0, datum.length());
bwsout.flush();
bwsout.close();
} catch (Exception e) {
System.out.println(e);
e.printStackTrace();
System.out.println("\t Error while IO write - failed");
ok = false;
return ok;
}
// read back ..
try {
FileContents fc_tmpfile = es.openFile(tmpfile);
if (!tmpfilename.equals(fc_tmpfile.getName())) {
System.out.println(
"\t tmpfile(in): "
+ tmpfilename
+ ", unequal to fc-filename: "
+ fc_tmpfile.getName()
+ " - info");
// ok=false;
// return ok;
}
if (!fc_tmpfile.canRead()) {
System.out.println("\t outfile: " + tmpfilename + ", read access failed");
ok = false;
}
// You can now use the FileContents object to read/write the file
java.io.InputStream sin = fc_tmpfile.getInputStream();
BufferedReader brsin = new BufferedReader(new InputStreamReader(sin));
String in = brsin.readLine();
if (!in.equals(datum)) {
System.out.println("\t file content <" + in + "> does not match <" + datum + "> - failed");
ok = false;
}
brsin.close();
} catch (Exception e) {
System.out.println(e);
e.printStackTrace();
System.out.println("\t Error while IO read - failed");
ok = false;
return ok;
}
return ok;
}
