Is there any way to get access logs from Tomcat server to java spring?

Question

I have my spring application, which is running on the Tomcat server, and I have an acsess_logfile, which is written logs that I need to use in java Spring Boot.
It looks like that:

IP - - [17/Feb/2023:17:27:20 +0400] "GET /web-services/112233.jpg HTTP/1.1"
IP - - [17/Feb/2023:17:27:29 +0400] "GET /web-services/ HTTP/1.1" 200 189
IP - - [17/Feb/2023:17:27:29 +0400] "GET /web-services/112233.jpg HTTP/1.1" 304

Here Tomcat writes logs, which are sent to visiting URL/SITE.

I need to print/read it into Java and get access to them.
Is there any possible way to do it?

My application.properties:

spring.mvc.view.prefix= /WEB-INF/jsp/
spring.mvc.view.suffix= .jsp

server.tomcat.accesslog.enabled= true

I try many ways to solve it, I try to inject AccessLogValve but it doesn't work:

@GetMapping(value = "/")
public String root(AccessLogValve acc) {
   // When I try to call AccessLogValve methods, it's always null
   return "index";
}

I add some properties in application.properties but it doesn't help:

server.tomcat.accesslog.directory= "/dev"
server.tomcat.accesslog.prefix= stdout
server.tomcat.accesslog.buffered= false
server.tomcat.accesslog.suffix=
server.tomcat.accesslog.file-date-format=
server.tomcat.accesslog.pattern= "[ACCESS] %{org.apache.catalina.AccessLog.RemoteAddr}r %l %t %D %F %B %S vcap_request_id:%{X-Vcap-Request-Id}i"

Please help me

"_it doesn't work_" - Can you show us your attempt? And clarify what happens when you try? — andrewJames, Feb 17 '23 at 16:45
I add to the answer, sorry for being late, I'm not in my house. — YourDaddyProgrammer, Feb 19 '23 at 07:56
I would go with File class and read the log from file system and process how ever you need.check https://stackoverflow.com/a/31202832/175554 — ozkanpakdil, Feb 19 '23 at 21:09

score 0 · Answer 1 · answered Mar 30 '23 at 07:25

Your attempt contains extra spaces, the setting should without a space after the equals sign. Like this:

server.tomcat.accesslog.directory=/dev
server.tomcat.accesslog.prefix=stdout
server.tomcat.accesslog.buffered=false
server.tomcat.accesslog.suffix=
server.tomcat.accesslog.file-date-format=
server.tomcat.accesslog.pattern="[ACCESS] %{org.apache.catalina.AccessLog.RemoteAddr}r %l %t %D %F %B %S vcap_request_id:%{X-Vcap-Request-Id}i"

Note that I have also removed the quotes around /dev. Next, if this still is not working, redirect the logs to regular file like this:

server.tomcat.accesslog.directory=/tmp
server.tomcat.accesslog.buffered=false
server.tomcat.accesslog.pattern="[ACCESS] %{org.apache.catalina.AccessLog.RemoteAddr}r %l %t %D %F %B %S vcap_request_id:%{X-Vcap-Request-Id}i"

The resulting log file will be available under /tmp directory, as access_log.<date>.log

All of this assumes, you are deploying on Linux-like OS. If you are on Windows, you have to change the path to valid Windows path.

Is there any way to get access logs from Tomcat server to java spring?

1 Answers1