Spring Boot enable http requests logging

Question

How to enable http server logs in an embedded tomcat server provided by spring boot? I've tried this in application.properties but it doesn't create file, neither logs to console

#application.properties
server.tomcat.access-log-enabled=true
server.tomcat.access-log-pattern=%a asdasd
logging.file=/home/mati/mylog.log
spring boot 1.0.1.RELEASE

Answer 1

Here it goes a way to have them displayed in console or whatever file you choose. Declare Tomcat's RequestDumperFilter in any @Configuration class:

@Bean
public FilterRegistrationBean requestDumperFilter() {
    FilterRegistrationBean registration = new FilterRegistrationBean();
    Filter requestDumperFilter = new RequestDumperFilter();
    registration.setFilter(requestDumperFilter);
    registration.addUrlPatterns("/*");
    return registration;
}

And that's the output:

http-nio-8765-exec-1 START TIME        =30-may-2016 12:45:41
http-nio-8765-exec-1         requestURI=/info
http-nio-8765-exec-1           authType=null
http-nio-8765-exec-1  characterEncoding=UTF-8
http-nio-8765-exec-1      contentLength=-1
http-nio-8765-exec-1        contentType=null
http-nio-8765-exec-1        contextPath=
http-nio-8765-exec-1             cookie=JSESSIONID=E7259F5F9ED6B04CBE5A294C5F8CA5C6
http-nio-8765-exec-1             header=host=mies-057:8765
http-nio-8765-exec-1             header=connection=keep-alive
http-nio-8765-exec-1             header=accept=text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
http-nio-8765-exec-1             header=upgrade-insecure-requests=1
http-nio-8765-exec-1             header=user-agent=Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
http-nio-8765-exec-1             header=referer=http://mies-057:1111/
http-nio-8765-exec-1             header=accept-encoding=gzip, deflate, sdch
http-nio-8765-exec-1             header=accept-language=es-ES,es;q=0.8
http-nio-8765-exec-1             header=cookie=JSESSIONID=E7259F5F9ED6B04CBE5A294C5F8CA5C6
http-nio-8765-exec-1             locale=es_ES
http-nio-8765-exec-1             method=GET
http-nio-8765-exec-1           pathInfo=null
http-nio-8765-exec-1           protocol=HTTP/1.1
http-nio-8765-exec-1        queryString=null
http-nio-8765-exec-1         remoteAddr=192.168.56.1
http-nio-8765-exec-1         remoteHost=192.168.56.1
http-nio-8765-exec-1         remoteUser=null
http-nio-8765-exec-1 requestedSessionId=E7259F5F9ED6B04CBE5A294C5F8CA5C6
http-nio-8765-exec-1             scheme=http
http-nio-8765-exec-1         serverName=mies-057
http-nio-8765-exec-1         serverPort=8765
http-nio-8765-exec-1        servletPath=/info
http-nio-8765-exec-1           isSecure=false
http-nio-8765-exec-1 ------------------=--------------------------------------------
http-nio-8765-exec-1 ------------------=--------------------------------------------
http-nio-8765-exec-1           authType=null
http-nio-8765-exec-1        contentType=application/json;charset=UTF-8
http-nio-8765-exec-1             header=Strict-Transport-Security=max-age=31536000 ; includeSubDomains
http-nio-8765-exec-1             header=X-Application-Context=EDGE:8765
http-nio-8765-exec-1             header=Content-Type=application/json;charset=UTF-8
http-nio-8765-exec-1             header=Transfer-Encoding=chunked
http-nio-8765-exec-1             header=Date=Mon, 30 May 2016 10:45:41 GMT
http-nio-8765-exec-1             status=200
http-nio-8765-exec-1 END TIME          =30-may-2016 12:45:41
http-nio-8765-exec-1 ===============================================================

Then manage it as any standard Spring Boot log.

Answer 2

In Spring Boot 1.5.1 the properties mentioned by Dave Syer no longer works, instead they're renamed into:

server.tomcat.basedir=target/tomcat-logs
server.tomcat.accesslog.enabled=true
server.tomcat.accesslog.pattern=%t %a "%r" %s (%D ms)

Using the configuration above, if running the project via its root directory the log will be available at target/tomcat-logs/log/access_log.*

Answer 3

Try

server.tomcat.accessLogEnabled=true
server.tomcat.accessLogPattern=%a asdasd

and look in /tmp/tomcat.<random>.<port>/logs for the output files. Set server.tomcat.basedir property to change the directory.