Rafael Campos Cruz

Ranch Hand

+ Follow

39 Posts 6 Threads 0 Cows

since Apr 16, 2013

Merit Badge info

Cows and Likes

Cows

Total received

In last 30 days

Total given

Likes

Total received

Received in last 30 days

Total given

Given in last 30 days

Forums and Threads

Scavenger Hunt

Ranch Hand Scavenger Hunt

Greenhorn Scavenger Hunt

Recent posts by Rafael Campos Cruz

Having a hard time to figure out why js won't work

Hi everyone!

I'm currently meddling with javaScript in order to implement a fingerPrinting system in my web application.

I've developed the following example in which I can get all the necessarily data:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head>
LOL
</h:head>
<h:body>
<h:form id="principal">
<h:outputScript library="js" name="output.js" />
<script type="text/javascript" >
function faz()
{
document.getElementById('principal:c1').value = dadosDaTela();
document.getElementById('principal:c2').value = verificaCookies();
document.getElementById('principal:c3').value = verificaPlugins();
document.getElementById('principal:c4').value = detectFonts();
document.getElementById('principal:c5').value = timeZone();
}
</script>
<h:inputHidden id="c1" value="#{teste.c1}" />
<h:inputHidden id="c2" value="#{teste.c2}" />
<h:inputHidden id="c3" value="#{teste.c3}" />
<h:inputHidden id="c4" value="#{teste.c4}" />
<h:inputHidden id="c5" value="#{teste.c5}" />
<input type="button" value="Shiu" onclick="faz()" />
<h:commandButton value="Teste master" action="#{teste.tst()}" />
<h:commandButton value="limpar" action="#{teste.limpa()}" />
</h:form>
</h:body>
</html>

It does exactly as it's supposed, and when I read the variables on the "teste" ManagedBean they are there as expected. The javaScript code is the following:

Which works correctly.

So when I tried to run it in the following page:

<?xml version='1.0' encoding='UTF-8' ?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>SET - Simulador Econômico Tendências</title>
<link href="./resources/css/style.css" rel="stylesheet" type="text/css" media="screen" />
</h:head>
<h:body>
<div id="header">
<img src="./resources/imgs/bannersup2.jpg" />
</div>
<h:outputScript library="js" name="output.js" />
<script type="text/javascript" >
function faz()
{
alert("entrei");
alert("blah : " + dadosDaTela());
document.getElementById('main:v1').value = dadosDaTela();
document.getElementById('main:v2').value = timeZone();
document.getElementById('main:v3').value = verificaPlugins();
document.getElementById('main:v4').value = detectFonts();
document.getElementById('main:v5').value = verificaCookies();
}
</script>
<div id="main">
<h3>Simulador Econômico Tendências</h3>
<h:form>
<h:inputHidden id="v1" value="#{autentica.SRs}" />
<h:inputHidden id="v2" value="#{autentica.tZ}" />
<h:inputHidden id="v3" value="#{autentica.pS}" />
<h:inputHidden id="v4" value="#{autentica.fS}" />
<h:inputHidden id="v5" value="#{autentica.CEn}" />
<h:panelGrid columns="2" styleClass="align-login">
<h:outputText></h:outputText>
<h:message for="login" styleClass="error"></h:message>
<h:outputText value="Login" id="log"/>
<h:inputText id="login" value="#{autentica.usuario}" immediate="true" required="true" requiredMessage="Informe o login!" label="log">
<f:validateLength maximum="30"/>
</h:inputText>
<h:outputText></h:outputText>
<h:message for="senha" styleClass="error"></h:message>
<h:outputText value="Senha"/>
<h:inputSecret id="senha" value="#{autentica.senha}" immediate="true" required="true" requiredMessage="Informe a senha!" >
<f:validateLength maximum="30"/>
</h:inputSecret>
</h:panelGrid>
<h:panelGrid columns="2" styleClass="align-login botao">
<h:commandButton styleClass="bot submit big" value="Entrar" action="#{vinculo.possoLogar}" onclick="faz();" />
<h:commandButton styleClass="bot reset big" value="Limpar" action="#{autentica.limpar}"/>
</h:panelGrid>
</h:form>
</div>
</h:body>
</html>

It simply won't work!

The function faz() is called and only the first "alert" popup is called, the second one which should show what is returned by dadosDaTela() isn't generated, why is that?
I simply cant see any reason for it to be so, could anyone help me?

8 years ago

JSF

A doubt about Runtime.exec() implementation and command input to programs through it

Joanne Neal wrote:

Rafael Campos Cruz wrote:
I'm afraid that's more by luck than judgement. You are creating a separate thread for each command you pass to Octave and running those threads at the same time. It's quite possible that those commands could be run in any order.

OOooooh, now I understoo what you meant!

So basically:

8 years ago

Java in General

A doubt about Runtime.exec() implementation and command input to programs through it

I changed some stuff according to what you instructed and it simply can't run as being a "Runnable" instead of "Thread", so I kept it as Thread.

The output is the following, which is correct:

[SPOILER]

[2014-03-24T16:17:05.167-0300] [glassfish 4.0] [INFO] [AS-WEB-GLUE-00172] [javax.enterprise.web] [tid: _ThreadID=95 _ThreadName=admin-listener(6)] [timeMillis: 1395688625167] [levelValue: 800] [[
Loading application [zamba] at [/zamba]]]
[2014-03-24T16:17:05.227-0300] [glassfish 4.0] [INFO] [] [javax.enterprise.system.core] [tid: _ThreadID=95 _ThreadName=admin-listener(6)] [timeMillis: 1395688625227] [levelValue: 800] [[
zamba foi implantado com sucesso em 2.673 milissegundos.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : GNU Octave, version 3.6.2]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : Copyright (C) 2012 John W. Eaton and others.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : This is free software; see the source code for copying conditions.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : FITNESS FOR A PARTICULAR PURPOSE. For details, type `warranty'.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : Octave was configured for "i486-pc-linux-gnu".]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : Additional information about Octave is available at http://www.octave.org.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : Please contribute if you find this software useful.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : For more information, visit http://www.octave.org/help-wanted.html]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : Read http://www.octave.org/bugs.html to learn how to submit bug reports.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA : For information about changes from previous versions, type `news'.]]
[2014-03-24T16:19:09.482-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688749482] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:10.401-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688750401] [levelValue: 800] [[
ERRO : warning: function /usr/share/octave/packages/statistics-1.1.3/fstat.m shadows a core library function]]
[2014-03-24T16:19:10.637-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750637] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:10.637-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750637] [levelValue: 800] [[
ENTRADA : Configuring Dynare ...]]
[2014-03-24T16:19:10.638-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750638] [levelValue: 800] [[
ENTRADA : [mex] Generalized QZ.]]
[2014-03-24T16:19:10.639-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750639] [levelValue: 800] [[
ENTRADA : [mex] Sylvester equation solution.]]
[2014-03-24T16:19:10.639-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750639] [levelValue: 800] [[
ENTRADA : [mex] Kronecker products.]]
[2014-03-24T16:19:10.640-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750640] [levelValue: 800] [[
ENTRADA : [mex] Sparse kronecker products.]]
[2014-03-24T16:19:10.640-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750640] [levelValue: 800] [[
ENTRADA : [mex] Local state space iteration (second order).]]
[2014-03-24T16:19:10.641-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750641] [levelValue: 800] [[
ENTRADA : [mex] Bytecode evaluation.]]
[2014-03-24T16:19:10.642-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750642] [levelValue: 800] [[
ENTRADA : [mex] k-order perturbation solver.]]
[2014-03-24T16:19:10.642-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750642] [levelValue: 800] [[
ENTRADA : [mex] k-order solution simulation.]]
[2014-03-24T16:19:10.643-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750643] [levelValue: 800] [[
ENTRADA : [mex] Quasi Monte-Carlo sequence (Sobol).]]
[2014-03-24T16:19:10.643-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750643] [levelValue: 800] [[
ENTRADA :]]
[2014-03-24T16:19:10.695-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750695] [levelValue: 800] [[
ENTRADA : Starting Dynare (version 4.3.0).]]
[2014-03-24T16:19:10.695-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750695] [levelValue: 800] [[
ENTRADA : Starting preprocessing of the model file ...]]
[2014-03-24T16:19:10.695-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750695] [levelValue: 800] [[
ENTRADA : Substitution of endo leads >= 2: added 3 auxiliary variables and equations.]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Substitution of endo lags >= 2: added 21 auxiliary variables and equations.]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Found 113 equation(s).]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Evaluating expressions...done]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Computing static model derivatives:]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : - order 1]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Computing dynamic model derivatives:]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : - order 1]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : - order 2]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Processing outputs ...done]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Preprocessing completed.]]
[2014-03-24T16:19:10.696-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688750696] [levelValue: 800] [[
ENTRADA : Starting MATLAB/Octave computing.]]
...
[2014-03-24T16:19:12.765-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752765] [levelValue: 800] [[
ERRO : warning: print.m: epstool binary is not available.]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : Some output formats are not available.]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : warning: called from]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : __print_parse_opts__ at line 348 column 9]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : print at line 263 column 8]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : dyn_saveas at line 34 column 5]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : stoch_simul at line 233 column 21]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : code at line 1079 column 6]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : dynare at line 128 column 1]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : warning: print.m: fig2dev binary is not available.]]
[2014-03-24T16:19:12.766-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=378 _ThreadName=Thread-3] [timeMillis: 1395688752766] [levelValue: 800] [[
ERRO : Some output formats are not available.]]
[2014-03-24T16:19:12.946-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688752946] [levelValue: 800] [[
ENTRADA : Total computing time : 0h00m02s]]
[2014-03-24T16:19:12.981-0300] [glassfish 4.0] [INFO] [] [] [tid: _ThreadID=379 _ThreadName=Thread-3] [timeMillis: 1395688752981] [levelValue: 800] [[
ENTRADA :]]

[/SPOILER]

And here follows my new implementations:

private void imprimeStreams(Process p) throws Exception
{
ThreadDeStream tdE = new ThreadDeStream(p.getErrorStream(), "ERRO"),
tdI = new ThreadDeStream(p.getInputStream(), "");
tdI.start();
tdE.start();
}
private void runCmd(Process p, String command) throws Exception
{
ThreadDeStream tds = new ThreadDeStream(p.getOutputStream(), command);
tds.start();
}
private void runOnShell()
{
Process p = null;
try
{
Runtime rt = Runtime.getRuntime();
//Process p = rt.exec("C:\\Octave\\Octave3.6.4_gcc4.6.2\\bin\\octave.exe --eval \"cd "
// + actingFolder + "; dynare code.mod; save -text saida.txt; exit\"");
//Process p = rt.exec("C:\\Octave\\3.6.4\\bin\\octave.exe --eval \"cd "
// + actingFolder + "; dynare code.mod; save -text saida.txt; exit\"");
//p = rt.exec(new String[]{"/bin/bash", "-c", "/root/octave", "--eval", "\"cd "
// + actingFolder + "; dynare code.mod; save -text saida.txt; exit\"", "--silent"});
p = rt.exec("/usr/bin/octave");
imprimeStreams(p);
runCmd(p, "cd " + actingFolder);
runCmd(p, "dynare code.mod");
runCmd(p, "save -text saida.txt");
runCmd(p, "exit");
p.waitFor();
}
catch(Exception e)
{
e.printStackTrace();
System.out.println("\nDeu ruim\n");
}
}
private void extraiResultado()
{
try
{
File f = new File(actingFolder + "/saida.txt");
//File f = new File(actingFolder + "\\saida.txt");
BufferedReader bf = new BufferedReader(new FileReader(f));
String text = null;
while((text = bf.readLine()) != null)
fileResult += text + "\n";
if(bf != null)
bf.close();
}
catch(Exception e)
{
System.out.println("Erro na abertura ou leitura de arquivo");
e.printStackTrace();
}
}

Thanks for the support, as soon as I get time I'll read the guide.

8 years ago

Java in General

A doubt about Runtime.exec() implementation and command input to programs through it

Ok, finally managed to understand and solve the problem.

Yes, threads are a necessity in this case, though I still don't understand quite well why (maybe JVM standard?), anyhow, I solved the problem by first creating a classe to handle both command execution and stream printing.

For anyone faces the same issue here it's the code:

package Entidades;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
public class ThreadDeStream extends Thread
{
/* Input e Error */
private InputStream is = null,
es = null;
private OutputStream os = null;
private String command = null;
public ThreadDeStream(InputStream is, InputStream es, OutputStream os)
{
this.is = is;
this.os = os;
this.es = es;
}
public ThreadDeStream(OutputStream os, String command)
{
this.os = os;
this.command = command;
}
public void run()
{
if(is != null && es != null && os != null)
{
try
{
PrintWriter pw = new PrintWriter(os);
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = null;
while((line = br.readLine()) != null)
pw.println(line);
br = new BufferedReader(new InputStreamReader(es));
while((line = br.readLine()) != null)
pw.println(line);
pw.flush();
}
catch(Exception e)
{
e.printStackTrace();
}
}
else if(os != null && command != null)
{
try
{
PrintWriter pw = new PrintWriter(os);
pw.println(command);
pw.flush();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
}

With this I implemented 2 methods to automate its calling:

And them I implemented it this way:

The thread.sleep() values are completely arbitrary, as it sort of is what Octave takes to run the mathematical model, so you should fix it to whatever you need.

I would like to point aswell that this is running on a webService inside a ApplicationScopped managed bean, so I could reference my server locally (it's part of a SessionControl that I created, so the server would have to support only 10 running simulations at a time).

Thanks to all on guiding me to the solution!

8 years ago

Java in General

A doubt about Runtime.exec() implementation and command input to programs through it

I really tried to, however, if I try to read the OutputStream I'm able to, however the application never exits the "while", follows an example:

And no: No error is returned. Using the example in "When Runtime().exec() won't" it can run Octave correctly (the program being called), with no problem at all.

I believe it's looping for ever because Octave is waiting for a response and, thus, it stays open, waiting, never being terminated. Could you give me some guidelines, or an example, on how to input to this program direct inputs?

P.S.: Another note:

I could run this line, and achieve my objectives, on windows without any problem at all:

halp ><

8 years ago

Java in General

A doubt about Runtime.exec() implementation and command input to programs through it

Hi everyone!

I come here botter you guys a little because I've been bashing my head on this problem since monday and I've tried my best to grasp everything here but I still can't make it work.
I also based my code on this simple "how to stuff" which makes sense, but I don't know if it is right or not.

Anyhow, my problem: I have a webApplication and I need to call a software installed on my server (Octave) in order to run a mathematical model inside it (it's quite good and fast on doing so). However this software has no java-interface, so the only way to call it is through
calling it using runtime and I NEED to pass instructions for it. Because of the way that Runtime.exec() works the only way to do so would be to input instructions while the software is running.

I was able to understand correctly how to call the software, but I simply can't input commands into it. I know that the command String IS RIGHT, however I think that it don't get to the application correctly... can you guys help me? Here follows the code:

Can you guys help me?

8 years ago

Java in General

Fields wont show the current variable data

Hi Arunkumar, thanks for your response!

I kindda didn't got to understand it though.

I'm not retrieving the data straight from a DB: it is handled on specific objetcs by a MB first, this way I can follow a very simple standard fow showing data.

My xhtml code is like this:
[spoiler]

<?xml version='1.0' encoding='UTF-8' ?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<ui:composition template="/WEB-INF/templates/templ1.xhtml">
<ui:define name="corpo">
<h:form>
<h:panelGrid columns="1"
rows="4"
style="position: relative; left: -60px">
<h:panelGrid columns="2"
rows="5"
border="1"
cellpadding="0"
cellspacing="2">
<h:outputLabel value="Data atual : #{edita.dataOriginal()}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Nova data :" />
<h:panelGrid columns="3"
rows="1">
<h:selectOneMenu value="#{edita.dia}"
onchange="this.form.submit();">
<f:selectItems
value="#{edita.dias}"
var="dias"
itemLabel="#{dias}"
itemValue="#{dias}" />
</h:selectOneMenu>
<h:selectOneMenu value="#{edita.mes}"
valueChangeListener="#{edita.mudaMes}"
onchange="this.form.submit();"
immediate="true">
<f:selectItems
value="#{edita.meses}"
var="meses"
itemLabel="#{meses}"
itemValue="#{meses}" />
</h:selectOneMenu>
<h:selectOneMenu value="#{edita.ano}"
onchange="this.form.submit();"
valueChangeListener="#{edita.mudaAno}"
immediate="true">
<f:selectItem
itemLabel="2005"
itemValue="2005" />
<f:selectItems
value="#{edita.anos}"
var="anos"
itemLabel="#{anos}"
itemValue="#{anos}" />
</h:selectOneMenu>
</h:panelGrid>
</h:panelGrid>
<h:outputLabel value="Setor atual : #{edita.original.setor}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo setor : " />
<h:selectOneMenu value="#{edita.setor}"
immediate="true"
onchange="this.form.submit();"
valueChangeListener="#{edita.mudaSetor}">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getSetores()}"
var="setores"
itemLabel="#{setores}"
itemValue="#{setores}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Classe atual : #{edita.original.classe}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Nova classe : " />
<h:selectOneMenu value="#{edita.classe}"
immediate="true">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getClasses()}"
var="classes"
itemLabel="#{classes}"
itemValue="#{classes}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Estado atual : #{edita.original.estado}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo estado : " />
<h:selectOneMenu value="#{edita.estado}"
immediate="true">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getEstados()}"
var="estados"
itemLabel="#{estados}"
itemValue="#{estados}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Tipo atual : #{edita.original.tipoTexto()}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo tipo : " />
<h:selectOneMenu value="#{edita.tipo}"
immediate="true">
<f:selectItems
value="#{edita.getTipos()}"
var="tipo"
itemLabel="#{tipo.key}"
itemValue="#{tipo.value}" />
</h:selectOneMenu>
</h:panelGrid>
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Texto atual : " />
<textarea readonly="true"
style="max-width: 400px;
max-height: 200px;
width: 400px;
height: 200px">
#{edita.original.noticia}
</textarea>
</h:panelGrid>
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo texto : " />
<h:inputTextarea value="#{edita.noticia}"
style="width: 400px; height: 200px"
immediate="true"
valueChangeListener="#{edita.fixNoticia}"
id="noticia"/>
</h:panelGrid>
</h:panelGrid>
</h:panelGrid>
<br />
<br />
<hr />
<br />
<br />
<div style="position: relative; left: 210px">
<h:commandButton value="Salvar alterações"
action="#{vinculo.voltaEditarBuscaNew}"
actionListener="#{edita.empacota}"
immediate="true"/>
<h:commandButton value="Cancelar alterações"
action="#{vinculo.voltaEditarBuscaOrg}"
style="position: relative; left: 30px"
immediate="true"/>
<h:commandButton value="Remover do banco"
action="#{edita.removeDoBanco}"
style="position: relative; left: 60px"
immediate="true"/>
</div>
<br />
<br />
<br />
<br />
<h:commandLink value="Deslogar"
action="#{autenticadorMB.deslogar}"
immediate="true"
style="position: relative; left:740px" />
</h:form>
</ui:define>
</ui:composition>
</html>

[/spoiler]

however, on this page the everything works right:
[spoiler]

<?xml version='1.0' encoding='UTF-8' ?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<ui:composition template="/WEB-INF/templates/templ1.xhtml">
<ui:define name="corpo">
<h:form>
<br />
<br />
<h:panelGrid columns="1"
rows="4"
style="position: relative; left: -40px">
<h:panelGrid columns="2"
rows="5"
border="1"
cellpadding="0"
cellspacing="2">
<h:outputLabel value="Data atual : #{edita.dataOriginal()}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Nova data :" />
<h:panelGrid columns="3"
rows="1">
<h:selectOneMenu value="#{edita.dia}"
onchange="this.form.submit();">
<f:selectItems
value="#{edita.dias}"
var="dias"
itemLabel="#{dias}"
itemValue="#{dias}" />
</h:selectOneMenu>
<h:selectOneMenu value="#{edita.mes}"
valueChangeListener="#{edita.mudaMes}"
onchange="this.form.submit();"
immediate="true">
<f:selectItem
itemLabel="1"
itemValue="1" />
<f:selectItems
value="#{edita.getMeses()}"
var="meses"
itemLabel="#{meses}"
itemValue="#{meses}" />
</h:selectOneMenu>
<h:selectOneMenu value="#{edita.ano}"
valueChangeListener="#{edita.mudaAno}"
onchange="this.form.submit();"
immediate="true">
<f:selectItem
itemLabel="2005"
itemValue="2005" />
<f:selectItems
value="#{edita.getAnos()}"
var="anos"
itemLabel="#{anos}"
itemValue="#{anos}" />
</h:selectOneMenu>
</h:panelGrid>
</h:panelGrid>
<h:outputLabel value="Setor atual : #{edita.original.setor}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo setor : " />
<h:selectOneMenu value="#{edita.setor}"
immediate="true"
onchange="this.form.submit();"
valueChangeListener="#{edita.mudaSetor}">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getSetores()}"
var="setores"
itemLabel="#{setores}"
itemValue="#{setores}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Classe atual : #{edita.original.classe}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Nova classe : " />
<h:selectOneMenu value="#{edita.classe}"
immediate="true"
valueChangeListener="#{edita.fixClasse}">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getClasses()}"
var="classes"
itemLabel="#{classes}"
itemValue="#{classes}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Estado atual : #{edita.original.estado}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo estado : " />
<h:selectOneMenu value="#{edita.estado}"
immediate="true"
valueChangeListener="#{edita.fixEstado}">
<f:selectItem
itemLabel="Indeterminado"
itemValue="Indeterminado"/>
<f:selectItems
value="#{edita.getEstados()}"
var="estados"
itemLabel="#{estados}"
itemValue="#{estados}" />
</h:selectOneMenu>
</h:panelGrid>
<h:outputLabel value="Tipo atual : #{edita.original.tipoTexto()}" />
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo tipo : " />
<h:selectOneMenu value="#{edita.tipo}"
immediate="true"
valueChangeListener="#{edita.fixTipo}">
<f:selectItems
value="#{edita.getTipos()}"
var="tipo"
itemLabel="#{tipo.key}"
itemValue="#{tipo.value}" />
</h:selectOneMenu>
</h:panelGrid>
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Texto atual : " />
<textarea style="max-width: 400px;
max-height: 200px;
width: 400px;
height: 200px "
readonly="true">
#{edita.original.noticia}
</textarea>
</h:panelGrid>
<h:panelGrid columns="2"
rows="1">
<h:outputLabel value="Novo texto : " />
<h:inputTextarea value="#{edita.noticia}"
style="width: 400px; height: 200px"
immediate="true"
valueChangeListener="#{edita.fixNoticia}"/>
</h:panelGrid>
</h:panelGrid>
</h:panelGrid>
<br />
<br />
<hr />
<br />
<br />
<div style="position: relative; left: 210px">
<h:commandButton value="Salvar alterações"
action="#{vinculo.voltaEditarNoticiaNew}"
actionListener="#{edita.empacota}"
immediate="true"/>
<h:commandButton value="Cancelar alterações"
action="#{vinculo.voltaEditarNoticiaOrg}"
style="position: relative; left: 30px"
immediate="true"/>
<h:commandButton value="Ignorar notícia"
action="adicionar"
style="position: relative; left: 60px"
immediate="true"/>
</div>
<br />
<br />
<br />
<br />
<h:commandLink value="Deslogar"
action="#{autenticadorMB.deslogar}"
immediate="true"
style="position: relative; left:740px" />
</h:form>
</ui:define>
</ui:composition>
</html>

[/spoiler]

which is quite the same but with different MBs interacting.

Any ideas?

8 years ago

JSF

Fields wont show the current variable data

Good afternoon to you all!

I'm experiencing the following issue: I have a page which is used to edit the current data from a certain entry:

However, in one of tha pages that follow this style it wont load the data like on this print!

I've verfified the variables and the information is there correctly, just isn't showing.

What could cause this?

8 years ago

JSF

Doubt using JS to call a h:commandButton

Lol, I put the code at the beggining of the doGet and it worked! I still would like to understand why it work only this way, but yeay!

9 years ago

JSF

Doubt using JS to call a h:commandButton

Hum...

after some research I found some aswers, I tried the following:

for no effect...

I'm trying to search an alternative but a FAQ that I found said that this should sort it all out, why it doesn't?

9 years ago

JSF

Doubt using JS to call a h:commandButton

How do I do that? What should I research for?

9 years ago

JSF

Doubt using JS to call a h:commandButton

I expressed myself badly, sorry. It's just as you said: the button calls the address which I setted up on web.xml (in my case "baixar").

Either way, I may click the button in several instances, but only one of then will summon the servlet...

9 years ago

JSF

Doubt using JS to call a h:commandButton

Hum... I'm having one last problem but, all on all, it worked just fine having the "setting up the file" and the "downloading the file" on separate pages.

My Glassfish Application Server runs inside a Linux machine and when I download the file accessing the application in the browser INSIDE the server, it works perfectly.

But, when I access it from the outside (when I access the application through a browser using its network address on a machine wich is not the server) the first time it will work correctly, but after that it will always copy the first file wich was extracted.

Not just that, the application won't delete the temporary file which was created and this allowed me to see something: the file created is correct, but not the one sent to the user.

By checking the logs I discovered that, when being called inside the server the Download Servet method doGet is called for each and every request that is deployed from the browser.

The same doesn't happen by making calls outside the server, the servlet is called just 1 time and never more, like if it's now waiting for requests with the doGet already running...

How can I force it to call doGet everytime? Is this a normal behavior?

9 years ago

JSF

Doubt using JS to call a h:commandButton

My fear is that, as the data is saved in a real file and many users will extract data the same way, the file be overwritten before the user have a change to download it.

9 years ago

JSF

Doubt using JS to call a h:commandButton

But there's a problem... I need to first get the data inside the file prior to downloading it...

in the page where these buttons will be the "data" which will go to the file is chosen (the are objects of a List and the user removes the ones wich he doesn't want) and the only way I can see of putting it inside the said file is through a MB method...

9 years ago

JSF