programmers vocabulary: June 2017

Hi Guys, I have started using Wildfly 10 sometime back and here is my guide on how to successfully configure wildfly 10. First of all download it from site.

http://wildfly.org/downloads/

Now, check if you have JAVA in the environment variables .Make sure it is pointed to Java 8.

echo %JAVA%
C:\Program Files\Java\jdk1.8.0_91\jre\bin\java.exe

open command prompt ,goto Wildfly\bin and type the following command

standalone.bat -Djboss.home.dir=\softwares\wildfly_10\wildfly-10.1.0.Final -Djboss.server.config.dir=\softwares\wildfly_10\wildfly-10.1.0.Final\standalone\configuration

If you are using powershell type the following command

.\standalone.bat -Djboss.home.dir=\softwares\wildfly_10\wildfly-10.1.0.Final -Djboss.server.config.dir=\softwares\wildfly_10\wildfly-10.1.0.Final\standalone\configuration

Note : you need to change the path to the path where wildfly installation is.

If you face the following error while starting

Unable to read the logging configuration from 'file:F:\shahbaz\softwares\wildfly_10\wildfly-10.1.0.Final\standalone/logging.properties' (java.io.FileNotFoundException: F:\shahbaz\softwares\wildfly_10\wildfly-10.1.0.Final\standalone\logging.properties (The system cannot find the file specified))

change the -Djboss.server.config.dir to the proper config path.

To find out which port number the http server is running , open standalone.xml and check the following attribute.

<socket-binding name="http" port="${jboss.http.port:8090}"/>

Once you start wildfly hit the following URL http://localhost:8090

Click on admin console and then you might see the following screen.

Run add-user.bat and set the username and password for application as well as management realm

Goto the home page after adding the users

Done with the server configuration . Now you can start playing with the server. So,Lets create a simple application and deploy .We will have a index page which will display a message on load.

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">

<display-name>My App </display-name>
</web-app>

Now build the war file which will be deployed . Type the following command in the console.

"C:\Program Files\Java\jdk1.8.0_91\bin\jar" -cvf myApp.war *

Once you have the war file ready you can deploy it using wildfly admin console.Follow the steps to deploy a war file.

Deploy the selected war file

Lets create servlet jsp project and deploy it.

package org.myApp;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.myApp.TempConvertor;

public class Converter extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)throws IOException,ServletException{
try{
String farenhiet=request.getParameter("farenhiet");
if(farenhiet != null ){
String celcius=TempConvertor.farenhietToCelcius(Float.parseFloat(farenhiet));
request.setAttribute("celcius",celcius);
RequestDispatcher requestDispatcher=request.getRequestDispatcher("/conv/result.jsp");
requestDispatcher.forward(request,response);
}
}catch(Exception e){
e.printStackTrace();
RequestDispatcher requestDispatcher=request.getRequestDispatcher("/conv/error.jsp");
requestDispatcher.forward(request,response);
}

}
public void doPost(HttpServletRequest request,HttpServletResponse response){
}
}

public class TempConvertor
{
public static String farenhietToCelcius(float farenhiet){
float celcius =(farenhiet -32 )*5/9;
return String.valueOf(celcius);
}
}

Your code here.

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