B4J Question [SOLVED][Server] How I can compile/build HelloWorld example for Synology NAS?

[Elric]

Hello to everybody!

Maybe this is a silly question but I've not found an answer...

I would like to test this https://www.b4x.com/android/forum/threads/server-building-web-servers-with-b4j.37172/#content on my NAS Synology DS215J.

Of course, I cannot build a standalone package because this project is not a UI app.

Well: what I've to do?

Thank you!

 

[hatzisn]

I googled it and it is multitasking so technically one can run two web apps side by side.

I also found this to start the web app at synology nas boot (don't shoot the messenger - I do not own a synology nas yet but checking around for possible implementations - there might be an easier solution of doing this):

Scroll down to the autostart section:

Synology installation and troubleshooting

support.jdownloader.org

 

[Num3]

I am also interested in this question. Is DSM multitasking? The nohup command, is it able to maintain alive 2 different programs?

It should be, it is a custom Linux OS

 

[hatzisn]

It should be, it is a custom Linux OS

Yes I noticed that with the code in the link in post#21. I wasn't aware of it though when I asked the question.

 

[Elric]

Hi
That is not working on my synology

Must I copy the files from www dir of the project to the dir where I copied file.jar in the synology?
Must I execute additional .jar/task in the synology to execute this example?

I have added the task

nohup /var/packages/Java8/target/j2sdk-image/bin/java -jar volume1/web/webapp/HelloWorld/WebAppHelloWorld.jar > /volume1/web/webapp/HelloWorld/nohup.out

I am running another web Server in port 80/443
nohup.out is empty

Make sure that you has already installed Java8.

In your folder "/volume1/web/webapp/HelloWorld" you have to copy both "WebAppHelloWorld.jar" and the "www" folder from your project in B4J.

Then you have to make it running on NAS: go in "Panel Control -> Task Scheduler" -> click on "Create" button -> "Triggered Task -> User-defined script" or "Scheduled Task > User-defined script" (depends on your necessity: try with "Triggered Task" at "Boot-up", user "root"). Remember to select "Enable".

Put the code with your path:

cd /volume1/web/webapp/HelloWorld
nohup /var/packages/Java8/target/j2sdk-image/bin/java -jar /volume1/web/webapp/HelloWorld/WebAppHelloWorld.jar > /volume1/web/webapp/HelloWorld/nohup.out

don't forget the first line!

Click on "Run" button or restart the NAS.

I think that you should manage more than one task and server but not on the same port.

 

[Dadaista]

You must copy the entire www folder as it is in B4j objects folder.

In your folder "/volume1/web/webapp/HelloWorld" you have to copy both "WebAppHelloWorld.jar" and the "www" folder from your project in B4J.

Did it

Make sure that you has already installed Java8.

Sure!

don't forget the first line!

added!

Click on "Run" button or restart the NAS.

I think that you should manage more than one task and server but not on the same port.

That is not working for me. Well, never mind. I keep trying in the future

Thx!!!!

 

[josejad]

Connect to the NAS with SSH and try the commands in the command line to see what’s happening before adding the line to the NAS script

 

[Dadaista]

Connect to the NAS with SSH and try the commands in the command line to see what’s happening before adding the line to the NAS script

0K.. I am going to try right now

EDIT:
Putty says: "-sh: /volume1/web/webapp/HelloWorld/nohup.out: No such file or directory"
No idea what is happening

EDIT2: (problems with uppercase)
Putty says: "nohup: ignoring input and redirecting stderr to stdout"
nohup.out says: "Error: Unable to access jarfile volume1/web/webapp/helloworld/WebAppHelloWorld.jar"