B4J Question How to distribute jRDC2 server in a jRDC2 + MySQL APP?

alexisleviera

New Member
Hi, I have a question with this example that I downloaded and compiled, working wonderfully
(https://www.b4x.com/android/forum/threads/b4xpages-jrdc2-mysql-crud-login.127241/)
But my query is the following: only the jRDC2 server works on the machine that compiles it (using B4J, of course).

How do I install this little app on a SERVER of my client so that it listens for connections?

Because if I close the B4J or run it on another machine, pretending to be my client, it doesn't work!

I hope I have explained myself well and hopefully you can help me!

Thanks
 
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aeric

Expert
Licensed User
Longtime User
alexisleviera said:
Because if I close the B4J or run it on another machine, pretending to be my client, it doesn't work!
Click to expand...
Do you mean you can run in Debug mode but you want to distribute it as standalone package? You need to compile in Release mode and copy the jar file from Objects folder to your production server. You can run the server in Windows or Linux machine.
 
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josejad

Expert
Licensed User
Longtime User
Hi Alexis:

As you speak Spanish, read this post, it explains how jRDC2 works and how to distribute:

[TUTORIAL] Acceder a base de datos con jRDC2

Hola, este tutorial es en parte una traducción del tutorial original y en parte algunas anotaciones mías. En principio, hay tres formas de acceder a bases de datos desde una app B4X. Las enumero con un enlace a los tutoriales en inglés. 1.- jdbcSQL Es una conexión directa desde la app al...
www.b4x.com

It says the same that aeric told in the above post:
" Una vez que tienes todo configurado, ejecuta de nuevo B4J en modo release. Esto genera un archivo .jar en la carpeta Objects. Este es la aplicación servidor que debes ejecutar y a la que tus aplicaciones se conectarán. "

If the machine acting like server runs linux, you should run it like this.

[server] Run a Server on a VPS

The steps required to run a B4J server on a hosted server (such as a VPS) are: 1. Download OpenJDK 19: https://www.oracle.com/java/technologies/javase/jdk19-archive-downloads.html If you are not familiar with Linux then download it to your development computer, unzip it and upload the files...
www.b4x.com

If it runs windows, with something like:

How can i run my compiled jRDC.jar in my windows Server ? IF jRDC.jar isn't running

i want to connect Mysql with b4a app i try to run with differents javas , and i try too with java to exe software. Sending me this Error: Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.UnsupportedClassVersionError...
www.b4x.com
 
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