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Listening to the server console


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Every time a message in the server console is displayed what i want to do is to get this message as a String... I don't want to change the message i know that wouldn't be possible but i want to get the Message and reformat it and then send it to my http server..... (my website is supposed to give me an server console and so far i got messages from users but not messages from the server or any message the players might get in chat which are not by a player)

 

If there in an better way then trying to listen to the log4j instance i would rather use that, but currently I don't even get how to listen to the log4j instance....

 

please help I have no clue of what i am doing....

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First, please note that you really need to ask permission from your users first before you do this, especially in the EU, because of GDPR (Note: I am not a lawyer, this is not legal advise).

 

You can use System.setOut to modify where System.out goes. Here is an example that changes it to point to a file: https://www.geeksforgeeks.org/redirecting-system-out-println-output-to-a-file-in-java/.

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just like an external server console

I dont Really get how to use youre solution while not deleting all the output of the server console 

this method of seems to leave me two choices: either never using the server console (cmd) again because there won't be any output anymore ... did i get that right?

If i set my own conloe output, won't then the original System.out vanish?

please help i don't want to overwrite my server's root console 

thats because i don't want the user to input any commands ....

I want them to only communicate....

please help!

 

Edited by anonymusdennis
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Am i doing this right?

 

//in server Start event:
System.setOut(new PrintStream(new consolesub(System.out)));
//-------
private static class consolesub extends OutputStream {
            PrintStream original;
            public consolesub(PrintStream out) {
                original = out;
            }

            public consolesub() {
                super();
            }

            @Override
            public void write(byte[] b) throws IOException {
                original.write(b);
                super.write(b);
            }

            @Override
            public void write(byte[] b, int off, int len) throws IOException {
                original.write(b,off,len);
                super.write(b, off, len);
            }

            @Override
            public void flush() throws IOException {
                original.flush();
                super.flush();
            }

            @Override
            public void close() throws IOException {
                original.close();
                super.close();
            }

            @Override
            public void write(int b) throws IOException {
                original.write(b);
            }
        }

 

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29 minutes ago, anonymusdennis said:

I don't want to put it in a File I want to resend the message directly via websockets

 

Of course... you need to put in some effort of your own... I just showed you what you needed to change where System.out goes. Now it is your job to do what schools call transfer of knowledge and combine this newly learned thing ("how to change where System.out goes") with what you already know ("how to send stuff to my server).

 

30 minutes ago, anonymusdennis said:

I dont Really get how to use youre solution while not deleting all the output of the server console

You first need to capture the current System.out value and your replacement need to not only write to your server but also to the previous System.out value.

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