<Host name="localhost"  appBase="webapps"

            unpackWARs="true" autoDeploy="true">

        <!--

        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"

               prefix="localhost_access_log." suffix=".txt"

               pattern="%h %l %u %t &quot;%r&quot; %s %b" />

        -->

        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"

               prefix="localhost_access_log." suffix=".txt"

               pattern="%h,%l,%u,%t,%T,&quot;%r&quot;,%s,%b,%{Referer}i,&quot;%{User-Agent}i&quot;,%{X-Requested-With}i"

               fileDateFormat="yyyy-MM-dd.HH"

               />

      </Host>

#tomcat访问日志

server.tomcat.accesslog.directory=d:/logs

server.tomcat.accesslog.enabled=true

server.tomcat.accesslog.prefix=localhost_access_log.

server.tomcat.accesslog.suffix=.txt

server.tomcat.accesslog.pattern=%h,%l,%u,%t,%T,"%r",%s,%b,%{Referer}i,"%{User-Agent}i",%{X-Requested-With}i,%{passport}c

server.tomcat.accesslog.file-date-format=yyyy-MM-dd

    public static void parse() throws Exception{

        String path = "D:/logs/localhost_access_log.2018-09-30.11.txt";

        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(path)));

        String line = null;

        String reg = "^(.+?),(.+?),(.+?),(.+?),(.+?),(\\\".+?\\\"),(.+?),(.+?),(.+?),(\\\".+?\\\"),(.+?),(.+?)$";

        Pattern pattern = Pattern.compile(reg);

        while((line=br.readLine())!=null) {

            System.out.println(line);

            Matcher matcher = pattern.matcher(line);

            matcher.matches();

            // pattern="%h,%l,%u,%t,%T,"%r",%s,%b,%{Referer}i,"%{User-Agent}i",%{X-Requested-With}i,%{passport}c"

            System.out.println("ip="+matcher.group(1));

            System.out.println("date="+matcher.group(4));

            System.out.println("cost="+matcher.group(5));

            System.out.println("request="+matcher.group(6));

            System.out.println("status="+matcher.group(7));

            System.out.println("bytes="+matcher.group(8));

            System.out.println("Referer="+matcher.group(9));

            System.out.println("User-Agent="+matcher.group(10));

            System.out.println("X-Requested-With="+matcher.group(11));

            System.out.println("passport="+matcher.group(12));

            System.out.println("------------------------------------");

        }

        br.close();

    }