org.springframework.web.filter

Class AbstractRequestLoggingFilter

java.lang.Object

org.springframework.web.filter.GenericFilterBean

org.springframework.web.filter.OncePerRequestFilter

org.springframework.web.filter.AbstractRequestLoggingFilter

All Implemented Interfaces:

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

Direct Known Subclasses:

CommonsRequestLoggingFilter, Log4jNestedDiagnosticContextFilter, ServletContextRequestLoggingFilter

public abstract class AbstractRequestLoggingFilter
extends OncePerRequestFilter

Base class for Filters that perform logging operations before and after a request is processed.

Subclasses should override the beforeRequest(HttpServletRequest, String) and afterRequest(HttpServletRequest, String) methods to perform the actual logging around the request.

Subclasses are passed the message to write to the log in the beforeRequest and afterRequest methods. By default, only the URI of the request is logged. However, setting the includeQueryString property to true will cause the query string of the request to be included also. The payload (body) of the request can be logged via the includePayload flag. Note that this will only log that which is read, which might not be the entire payload.

Prefixes and suffixes for the before and after messages can be configured using the beforeMessagePrefix, afterMessagePrefix, beforeMessageSuffix and afterMessageSuffix properties,

Since:

1.2.5

Author:

Rob Harrop, Juergen Hoeller, Rossen Stoyanchev

See Also:

beforeRequest(javax.servlet.http.HttpServletRequest, java.lang.String), afterRequest(javax.servlet.http.HttpServletRequest, java.lang.String)

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_AFTER_MESSAGE_PREFIX
static String	DEFAULT_AFTER_MESSAGE_SUFFIX
static String	DEFAULT_BEFORE_MESSAGE_PREFIX
static String	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
AbstractRequestLoggingFilter()

Method Summary

Modifier and Type	Method and Description
protected abstract void	afterRequest(HttpServletRequest request, String message) Concrete subclasses should implement this method to write a log message after the request is processed.
protected abstract void	beforeRequest(HttpServletRequest request, String message) Concrete subclasses should implement this method to write a log message before the request is processed.
protected String	createMessage(HttpServletRequest request, String prefix, String suffix) Create a log message for the given request, prefix and suffix.
protected void	doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) Forwards the request to the next filter in the chain and delegates down to the subclasses to perform the actual request logging both before and after the request is processed.
protected int	getMaxPayloadLength() Return the maximum length of the payload body to be included in the log message.
protected boolean	isIncludeClientInfo() Return whether the client address and session id should be included in the log message.
protected boolean	isIncludePayload() Return whether the request payload (body) should be included in the log message.
protected boolean	isIncludeQueryString() Return whether the query string should be included in the log message.
void	setAfterMessagePrefix(String afterMessagePrefix) Set the value that should be prepended to the log message written after a request is processed.
void	setAfterMessageSuffix(String afterMessageSuffix) Set the value that should be appended to the log message written after a request is processed.
void	setBeforeMessagePrefix(String beforeMessagePrefix) Set the value that should be prepended to the log message written before a request is processed.
void	setBeforeMessageSuffix(String beforeMessageSuffix) Set the value that should be appended to the log message written before a request is processed.
void	setIncludeClientInfo(boolean includeClientInfo) Set whether the client address and session id should be included in the log message.
void	setIncludePayload(boolean includePayload) Set whether the request payload (body) should be included in the log message.
void	setIncludeQueryString(boolean includeQueryString) Set whether the query string should be included in the log message.
void	setMaxPayloadLength(int maxPayloadLength) Sets the maximum length of the payload body to be included in the log message.
protected boolean	shouldLog(HttpServletRequest request) Determine whether to call the beforeRequest(javax.servlet.http.HttpServletRequest, java.lang.String)/afterRequest(javax.servlet.http.HttpServletRequest, java.lang.String) methods for the current request, i.e.
protected boolean	shouldNotFilterAsyncDispatch() The default value is "false" so that the filter may log a "before" message at the start of request processing and an "after" message at the end from when the last asynchronously dispatched thread is exiting.

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

DEFAULT_BEFORE_MESSAGE_PREFIX

public static final String DEFAULT_BEFORE_MESSAGE_PREFIX

See Also:

Constant Field Values

DEFAULT_BEFORE_MESSAGE_SUFFIX

public static final String DEFAULT_BEFORE_MESSAGE_SUFFIX

See Also:

Constant Field Values

DEFAULT_AFTER_MESSAGE_PREFIX

public static final String DEFAULT_AFTER_MESSAGE_PREFIX

See Also:

Constant Field Values

DEFAULT_AFTER_MESSAGE_SUFFIX

public static final String DEFAULT_AFTER_MESSAGE_SUFFIX

See Also:

Constant Field Values

Constructor Detail

AbstractRequestLoggingFilter

public AbstractRequestLoggingFilter()

Method Detail

setIncludeQueryString

public void setIncludeQueryString(boolean includeQueryString)

Set whether the query string should be included in the log message.

Should be configured using an <init-param> for parameter name "includeQueryString" in the filter definition in web.xml.

isIncludeQueryString

protected boolean isIncludeQueryString()

Return whether the query string should be included in the log message.

setIncludeClientInfo

public void setIncludeClientInfo(boolean includeClientInfo)

Set whether the client address and session id should be included in the log message.

Should be configured using an <init-param> for parameter name "includeClientInfo" in the filter definition in web.xml.

isIncludeClientInfo

protected boolean isIncludeClientInfo()

Return whether the client address and session id should be included in the log message.

setIncludePayload

public void setIncludePayload(boolean includePayload)

Set whether the request payload (body) should be included in the log message.

Should be configured using an <init-param> for parameter name "includePayload" in the filter definition in web.xml.

isIncludePayload

protected boolean isIncludePayload()

Return whether the request payload (body) should be included in the log message.

setMaxPayloadLength

public void setMaxPayloadLength(int maxPayloadLength)

Sets the maximum length of the payload body to be included in the log message. Default is 50 characters.

getMaxPayloadLength

protected int getMaxPayloadLength()

Return the maximum length of the payload body to be included in the log message.

setBeforeMessagePrefix

public void setBeforeMessagePrefix(String beforeMessagePrefix)

Set the value that should be prepended to the log message written before a request is processed.

setBeforeMessageSuffix

public void setBeforeMessageSuffix(String beforeMessageSuffix)

Set the value that should be appended to the log message written before a request is processed.

setAfterMessagePrefix

public void setAfterMessagePrefix(String afterMessagePrefix)

Set the value that should be prepended to the log message written after a request is processed.

setAfterMessageSuffix

public void setAfterMessageSuffix(String afterMessageSuffix)

Set the value that should be appended to the log message written after a request is processed.

shouldNotFilterAsyncDispatch

protected boolean shouldNotFilterAsyncDispatch()

The default value is "false" so that the filter may log a "before" message at the start of request processing and an "after" message at the end from when the last asynchronously dispatched thread is exiting.

Overrides:

shouldNotFilterAsyncDispatch in class OncePerRequestFilter

doFilterInternal

protected void doFilterInternal(HttpServletRequest request,
                                HttpServletResponse response,
                                FilterChain filterChain)
                         throws ServletException,
                                IOException

Forwards the request to the next filter in the chain and delegates down to the subclasses to perform the actual request logging both before and after the request is processed.

Specified by:

doFilterInternal in class OncePerRequestFilter

Throws:

ServletException

IOException

See Also:

beforeRequest(javax.servlet.http.HttpServletRequest, java.lang.String), afterRequest(javax.servlet.http.HttpServletRequest, java.lang.String)

createMessage

protected String createMessage(HttpServletRequest request,
                               String prefix,
                               String suffix)

Create a log message for the given request, prefix and suffix.

If includeQueryString is true, then the inner part of the log message will take the form request_uri?query_string; otherwise the message will simply be of the form request_uri.

The final message is composed of the inner part as described and the supplied prefix and suffix.

shouldLog

protected boolean shouldLog(HttpServletRequest request)

Determine whether to call the beforeRequest(javax.servlet.http.HttpServletRequest, java.lang.String)/afterRequest(javax.servlet.http.HttpServletRequest, java.lang.String) methods for the current request, i.e. whether logging is currently active (and the log message is worth building).

The default implementation always returns true. Subclasses may override this with a log level check.

Parameters:

request - current HTTP request

Returns:

true if the before/after method should get called; false otherwise

Since:

4.1.5

beforeRequest

protected abstract void beforeRequest(HttpServletRequest request,
                                      String message)

Concrete subclasses should implement this method to write a log message before the request is processed.

Parameters:

request - current HTTP request

message - the message to log

afterRequest

protected abstract void afterRequest(HttpServletRequest request,
                                     String message)

Concrete subclasses should implement this method to write a log message after the request is processed.

Parameters:

request - current HTTP request

message - the message to log