Ejecutar archivo .JAR desde DElphi

[jgutti]

Juan, utiliza esta rutina para firmar archivos xml utilizando rutina.jar

txtComando.Text:='c:\jdk1.7.0_13\bin\java -jar rutina.jar firma archivos.xml archivo_salida.xml ;
txtSalida.Text := ejecutarComando(txtComando.Text);

function ejecutarComando (comando : string) : string;
var
Buffer: array[0..4096] of Char;
si: STARTUPINFO;
sa: SECURITY_ATTRIBUTES;
sd: SECURITY_DESCRIPTOR;
pi: PROCESS_INFORMATION;
newstdin, newstdout, read_stdout, write_stdin: THandle;
exitcod, bread, avail: Cardinal;
begin
Result:= '';
if IsWinNT then
begin
InitializeSecurityDescriptor(@sd, SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(@sd, true, nil, false);
sa.lpSecurityDescriptor := @sd;
end
else sa.lpSecurityDescriptor := nil;
sa.nLength := sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle := TRUE;
if CreatePipe(newstdin, write_stdin, @sa, 0) then
begin
if CreatePipe(read_stdout, newstdout, @sa, 0) then
begin
GetStartupInfo(si);
with si do
begin
dwFlags := STARTF_USESTDHANDLES or STARTF_USESHOWWINDOW;
wShowWindow := SW_HIDE;
hStdOutput := newstdout;
hStdError := newstdout;
hStdInput := newstdin;
end;
Fillchar(Buffer, SizeOf(Buffer), 0);
GetEnvironmentVariable('COMSPEC', @Buffer, SizeOf(Buffer) - 1);
StrCat(@Buffer,PChar(' /c ' + comando));
if CreateProcess(nil, @Buffer, nil, nil, TRUE, CREATE_NEW_CONSOLE, nil, nil, si, pi) then
begin
repeat
PeekNamedPipe(read_stdout, @Buffer, SizeOf(Buffer) - 1, @bread, @avail, nil);
if bread > 0 then
begin
Fillchar(Buffer, SizeOf(Buffer), 0);
ReadFile(read_stdout, Buffer, bread, bread, nil);
Result:= Result + String(PChar(@Buffer));
end;
Application.ProcessMessages;
GetExitCodeProcess(pi.hProcess, exitcod);
until (exitcod <> STILL_ACTIVE) and (bread = 0);
end;
CloseHandle(read_stdout);
CloseHandle(newstdout);
end;
CloseHandle(newstdin);
CloseHandle(write_stdin);
end;
end;

saludos
jgutti