Package net.thauvin.erik.httpstatus.taglibs

Class CauseTag

java.lang.Object

jakarta.servlet.jsp.tagext.SimpleTagSupport

net.thauvin.erik.httpstatus.taglibs.XmlSupport

net.thauvin.erik.httpstatus.taglibs.CauseTag

All Implemented Interfaces:

JspTag, SimpleTag

public class CauseTag
extends XmlSupport

Outputs the cause (if any) of the current HTTP status error. The cause is derived from the underlying Throwable associated with the error being processed by the JSP container.

If no cause is available, the tag prints the configured default value. XML escaping is applied when enabled.

Since:

1.0

Author:

Erik C. Thauvin

Field Summary

Fields inherited from class net.thauvin.erik.httpstatus.taglibs.XmlSupport

defaultValue, escapeXml

Constructor Summary

Constructors

Constructor	Description
CauseTag()

Method Summary

Modifier and Type	Method	Description
void	doTag()	Writes the localized message of the cause associated with the current HTTP status error.
String	getCause(Throwable cause)	Returns the localized message of the given cause, or null if no cause or message is available.

Methods inherited from class net.thauvin.erik.httpstatus.taglibs.XmlSupport

setDefault, setEscapeXml

Methods inherited from class jakarta.servlet.jsp.tagext.SimpleTagSupport

findAncestorWithClass, getJspBody, getJspContext, getParent, setJspBody, setJspContext, setParent

Methods inherited from class java.lang.Object

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

Constructor Details

CauseTag

public CauseTag()

Method Details

doTag

public void doTag()
           throws IOException

Writes the localized message of the cause associated with the current HTTP status error. If no error, throwable, or cause is available, the default value is used instead.

Specified by:

doTag in interface SimpleTag

Overrides:

doTag in class SimpleTagSupport

Throws:

IOException - If an error occurs while writing output

getCause

public String getCause(Throwable cause)

Returns the localized message of the given cause, or null if no cause or message is available.