org.springframework.web.filter

Class Log4jNestedDiagnosticContextFilter

java.lang.Object

org.springframework.web.filter.GenericFilterBean

org.springframework.web.filter.OncePerRequestFilter

org.springframework.web.filter.AbstractRequestLoggingFilter

org.springframework.web.filter.Log4jNestedDiagnosticContextFilter

All Implemented Interfaces:

Filter, Aware, BeanNameAware, DisposableBean, InitializingBean, EnvironmentAware, ServletContextAware

public class Log4jNestedDiagnosticContextFilter
extends AbstractRequestLoggingFilter

Request logging filter that adds the request log message to the Log4J nested diagnostic context (NDC) before the request is processed, removing it again after the request is processed.

Since:

1.2.5

Author:

Juergen Hoeller, Rob Harrop

See Also:

AbstractRequestLoggingFilter.setIncludeQueryString(boolean), AbstractRequestLoggingFilter.setBeforeMessagePrefix(java.lang.String), AbstractRequestLoggingFilter.setBeforeMessageSuffix(java.lang.String), AbstractRequestLoggingFilter.setAfterMessagePrefix(java.lang.String), AbstractRequestLoggingFilter.setAfterMessageSuffix(java.lang.String), NDC.push(String), NDC.pop()

Field Summary

Fields

Modifier and Type	Field and Description
protected Logger	log4jLogger Logger available to subclasses

Fields inherited from class org.springframework.web.filter.AbstractRequestLoggingFilter

DEFAULT_AFTER_MESSAGE_PREFIX, DEFAULT_AFTER_MESSAGE_SUFFIX, DEFAULT_BEFORE_MESSAGE_PREFIX, DEFAULT_BEFORE_MESSAGE_SUFFIX

Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

ALREADY_FILTERED_SUFFIX

Fields inherited from class org.springframework.web.filter.GenericFilterBean

logger

Constructor Summary

Constructors

Constructor and Description
Log4jNestedDiagnosticContextFilter()

Method Summary

Modifier and Type	Method and Description
protected void	afterRequest(HttpServletRequest request, String message) Removes the log message from the Log4J NDC after the request is processed and logs the after-request message through Log4J.
protected void	beforeRequest(HttpServletRequest request, String message) Logs the before-request message through Log4J and adds a message the Log4J NDC before the request is processed.
protected String	getNestedDiagnosticContextMessage(HttpServletRequest request) Determine the message to be pushed onto the Log4J nested diagnostic context.

Methods inherited from class org.springframework.web.filter.AbstractRequestLoggingFilter

createMessage, doFilterInternal, getMaxPayloadLength, isIncludeClientInfo, isIncludePayload, isIncludeQueryString, setAfterMessagePrefix, setAfterMessageSuffix, setBeforeMessagePrefix, setBeforeMessageSuffix, setIncludeClientInfo, setIncludePayload, setIncludeQueryString, setMaxPayloadLength, shouldLog, shouldNotFilterAsyncDispatch

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

doFilter, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilter, shouldNotFilterErrorDispatch

Methods inherited from class org.springframework.web.filter.GenericFilterBean

addRequiredProperty, afterPropertiesSet, destroy, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setEnvironment, setServletContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log4jLogger

protected final Logger log4jLogger

Logger available to subclasses

Constructor Detail

Log4jNestedDiagnosticContextFilter

public Log4jNestedDiagnosticContextFilter()

Method Detail

beforeRequest

protected void beforeRequest(HttpServletRequest request,
                             String message)

Logs the before-request message through Log4J and adds a message the Log4J NDC before the request is processed.

Specified by:

beforeRequest in class AbstractRequestLoggingFilter

Parameters:

request - current HTTP request

message - the message to log

getNestedDiagnosticContextMessage

protected String getNestedDiagnosticContextMessage(HttpServletRequest request)

Determine the message to be pushed onto the Log4J nested diagnostic context.

Default is a plain request log message without prefix or suffix.

Parameters:

request - current HTTP request

Returns:

the message to be pushed onto the Log4J NDC

See Also:

AbstractRequestLoggingFilter.createMessage(javax.servlet.http.HttpServletRequest, java.lang.String, java.lang.String)

afterRequest

protected void afterRequest(HttpServletRequest request,
                            String message)

Removes the log message from the Log4J NDC after the request is processed and logs the after-request message through Log4J.

Specified by:

afterRequest in class AbstractRequestLoggingFilter

Parameters:

request - current HTTP request

message - the message to log