Configure access log in Tomcat to monitor the processing time of each HTTP Request

Tomcat 6 configuration official documentation: http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html

 

Configure the <value/> element in CONF/server. xml. You can configure the <value/> element under (context, host, or engine) and other elements.

<Valveclassname = "org. Apache. Catalina. Valves. accesslogvalve"

Directory = "logs" prefix = "access_log." suffix = ". ACC" rotatable = "true" filedateformat = "yyyy-mm-dd"

Pattern = "% A % d % T % u % L % S % B % v % P % R" resolvehosts = "false"/>

After Tomcat is started, the default log file directory is logs,

The specific information format is as follows:

127.0.0.1 37 [05/Jun/2012: 17: 23: 43 + 0800] -- 200 2806 127.0.0.1 8080 get/cdbleasing/message. listmessageprompt. Action? _ Dc = 1338888223333 HTTP/1.1

127.0.0.1 533 [05/Jun/2012: 17: 26: 31 + 0800]--200 25994 127.0.0.1 8080 get/cdbleasing/workflow. listtaskbycandidateuser. Action? _ Dc = 1338888390970 & Title = & author = & processname = & page = 1 & START = 0 & limit = 50 & sort = % 5B % 7b % 22 property % 22% 3A % 22 specified edtime % 22% 2C % 22 direction % 22% 3A % 22 DESC % 22% 7D % 5 dhttp/1.1

 

 

Official configuration instructions:

Values for the pattern attribute are madeup of literal text strings, combined with pattern identifiers prefixed by the "%" character to cause replacement by the corresponding variablevalue from the current request and
Response. The following Pattern Codes aresupported:

• %-Remote IP Address
• %-Local IP Address
• % B-Bytes Sent, excluding HTTP headers, or '-' If zero
• % B-Bytes Sent, excluding HTTP headers
• % H-Remote Host Name (or IP address if resolvehosts is false)
• % H-Request Protocol
• % L-Remote logical username from identd (always returns '-')
• % M-Request Method (get, post, etc .)
• % P-Local port on which this request was received ed
• % Q-Query string (prepended with '? 'If it exists)
• % R-First line of the request (method and request URI)
• % S-HTTP status code of the response
• % S-User session ID
• % T-Date and time, in common log format
• % U-Remote user that was authenticated (if any), else '-'
• % U-Requested URL path
• % V-Local server name
• % D-Time taken to process the request, in millis
• % T-Time taken to process the request, in seconds
• % I-Current request thread name (can compare later with stacktraces)

There is alsosupport to write information from the cookie, incoming header, the session orsomething else in the servletrequest. It is modeled after the apachehttp server log configurationsyntax:

• % {XXX} IFor incoming Headers
• % {XXX} oFor outgoing Response Headers
• % {XXX} cFor a specific cookie
• % {XXX} rXXX is an attribute in the servletrequest
• % {XXX} sXXX is an attribute in the httpsession

The shorthandpattern name common (which is also the default) corresponds'% H % L % u % t "% R" % S % B'.

The shorthandpattern name Combined appends the values of the Referer and User-Agent headers, each in double quotes, to the common pattern describedin the previous paragraph.