org.apache.log4j

Class HTMLLayout

java.lang.Object

org.apache.log4j.Layout

org.apache.log4j.HTMLLayout

All Implemented Interfaces:

OptionHandler

public class HTMLLayout
extends Layout

This layout outputs events in a HTML table.

Appenders using this layout should have their encoding set to UTF-8 or UTF-16, otherwise events containing non ASCII characters could result in corrupted log files.

Author:

Ceki Gülcü

Field Summary

Fields

Modifier and Type	Field and Description
protected int	BUF_SIZE
static String	LOCATION_INFO_OPTION Deprecated. Options are now handled using the JavaBeans paradigm. This constant is not longer needed and will be removed in the near term.
protected int	MAX_CAPACITY
static String	TITLE_OPTION A string constant used in naming the option for setting the the HTML document title.

Fields inherited from class org.apache.log4j.Layout

LINE_SEP, LINE_SEP_LEN

Constructor Summary

Constructors

Constructor and Description
HTMLLayout()

Method Summary

Modifier and Type	Method and Description
void	activateOptions() No options to activate.
String	format(LoggingEvent event) Implement this method to create your own layout format.
String	getContentType() Returns the content type output by this layout, i.e "text/html".
String	getFooter() Returns the appropriate HTML footers.
String	getHeader() Returns appropriate HTML headers.
boolean	getLocationInfo() Returns the current value of the LocationInfo option.
String	getTitle() Returns the current value of the Title option.
boolean	ignoresThrowable() The HTML layout handles the throwable contained in logging events.
void	setLocationInfo(boolean flag) The LocationInfo option takes a boolean value.
void	setTitle(String title) The Title option takes a String value.

Methods inherited from class java.lang.Object

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

Field Detail

BUF_SIZE

protected final int BUF_SIZE

See Also:

Constant Field Values

MAX_CAPACITY

protected final int MAX_CAPACITY

See Also:

Constant Field Values

LOCATION_INFO_OPTION

public static final String LOCATION_INFO_OPTION

Deprecated. Options are now handled using the JavaBeans paradigm. This constant is not longer needed and will be removed in the near term.

A string constant used in naming the option for setting the the location information flag. Current value of this string constant is LocationInfo.

Note that all option keys are case sensitive.

See Also:

Constant Field Values

TITLE_OPTION

public static final String TITLE_OPTION

A string constant used in naming the option for setting the the HTML document title. Current value of this string constant is Title.

See Also:

Constant Field Values

Constructor Detail

HTMLLayout

public HTMLLayout()

Method Detail

setLocationInfo

public void setLocationInfo(boolean flag)

The LocationInfo option takes a boolean value. By default, it is set to false which means there will be no location information output by this layout. If the the option is set to true, then the file name and line number of the statement at the origin of the log statement will be output.

If you are embedding this layout within an SMTPAppender then make sure to set the LocationInfo option of that appender as well.

getLocationInfo

public boolean getLocationInfo()

Returns the current value of the LocationInfo option.

setTitle

public void setTitle(String title)

The Title option takes a String value. This option sets the document title of the generated HTML document.

Defaults to 'Log4J Log Messages'.

getTitle

public String getTitle()

Returns the current value of the Title option.

getContentType

public String getContentType()

Returns the content type output by this layout, i.e "text/html".

Overrides:

getContentType in class Layout

activateOptions

public void activateOptions()

No options to activate.

format

public String format(LoggingEvent event)

Description copied from class: Layout

Implement this method to create your own layout format.

Specified by:

format in class Layout

getHeader

public String getHeader()

Returns appropriate HTML headers.

Overrides:

getHeader in class Layout

getFooter

public String getFooter()

Returns the appropriate HTML footers.

Overrides:

getFooter in class Layout

ignoresThrowable

public boolean ignoresThrowable()

The HTML layout handles the throwable contained in logging events. Hence, this method return false.

Specified by:

ignoresThrowable in class Layout