'agent tcpserver' failed to open the port

[青梅煮酒]

my demo：

use 'ss -tanl' 

no 6330

curl 80

so dump failed

what did I do wrong

[青梅煮酒]

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]

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]

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]

thank you very much. I'm an operation and maintenance engineer, so I don't know much about Java

thanks again