'agent tcpserver' failed to open the port

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青梅煮酒

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Sep 11, 2021, 7:00:07 AM9/11/21
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my demo:

demo.png

use 'ss -tanl' 
no 6330
ss.png
curl 80
curl.png
so dump failed
cli.png
what did I do wrong
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青梅煮酒

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Sep 11, 2021, 7:04:16 AM9/11/21
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java -jar demo-0.0.1-SNAPSHOT.jar -javaagent:/root/jacoco-0.8.7/lib/jacocoagent.jar=includes=*,output=tcpserver,port=6330,address=127.0.0.1,append=true

青梅煮酒

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Sep 11, 2021, 7:06:25 AM9/11/21
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the startup command in the picture seems to have some problems, but I try again with the correct command, which is still the case

Marc Hoffmann

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Sep 11, 2021, 11:36:23 AM9/11/21
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Hi,

the -javaagent parameter needs to be defined before the -jar option to be recognised as a VM option. Everything after the -jar option is considered a program parameter and simply passed to the main() method.

Therfore the correct command line is:

java -javaagent:/root/jacoco-0.8.7/lib/jacocoagent.jar=includes=*,output=tcpserver,port=6330,address=127.0.0.1,append=true -jar demo-0.0.1-SNAPSHOT.jar 

Regards,
-marc

On 11. Sep 2021, at 13:00, 青梅煮酒 <qingm...@gmail.com> wrote:

my demo:

<demo.png>

use 'ss -tanl' 
no 6330
<ss.png>
curl 80
<curl.png>
so dump failed
<cli.png>
what did I do wrong

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<cli.png><curl.png><demo.png><ss.png>

青梅煮酒

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Sep 12, 2021, 8:45:46 PM9/12/21
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thank you very much. I'm an operation and maintenance engineer, so I don't know much about Java

thanks again
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