org.apache.catalina.valves
Class ErrorReportValve

java.lang.Object
  org.apache.catalina.valves.ValveBase
      org.apache.catalina.valves.ErrorReportValve

All Implemented Interfaces:

Contained, Valve

public class ErrorReportValve

extends ValveBase

Implementation of a Valve that outputs HTML error pages.

This Valve should be attached at the Host level, although it will work if attached to a Context.

HTML code from the Cocoon 2 project.

Version:

$Revision: 784470 $ $Date: 2009-06-13 21:54:56 +0100 (Sat, 13 Jun 2009) $

Author:

Remy Maucherat, Craig R. McClanahan, Nicola Ken Barozzi Aisa, Stefano Mazzocchi

Field Summary

protected static StringManager

sm The StringManager for this package.

Fields inherited from class org.apache.catalina.valves.ValveBase

container

Constructor Summary

ErrorReportValve()

Method Summary

java.lang.String	getInfo() Return descriptive information about this Valve implementation.
void	invoke(Request request, Response response, ValveContext context) Invoke the next Valve in the sequence.
protected void	log(java.lang.String message) Log a message on the Logger associated with our Container (if any).
protected void	log(java.lang.String message, java.lang.Throwable throwable) Log a message on the Logger associated with our Container (if any).
protected void	report(Request request, Response response, java.lang.Throwable throwable) Prints out an error report.
java.lang.String	toString() Return a String rendering of this object.

Methods inherited from class org.apache.catalina.valves.ValveBase

getContainer, getDebug, setContainer, setDebug

Methods inherited from class java.lang.Object

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

Field Detail

sm

protected static StringManager sm

The StringManager for this package.

Constructor Detail

ErrorReportValve

public ErrorReportValve()

Method Detail

getInfo

public java.lang.String getInfo()

Return descriptive information about this Valve implementation.

Specified by:

getInfo in interface Valve

Overrides:

getInfo in class ValveBase

invoke

public void invoke(Request request,
                   Response response,
                   ValveContext context)
            throws java.io.IOException,
                   javax.servlet.ServletException

Invoke the next Valve in the sequence. When the invoke returns, check the response state, and output an error report is necessary.

Specified by:

invoke in interface Valve

Specified by:

invoke in class ValveBase

Parameters:

request - The servlet request to be processed

response - The servlet response to be created

context - The valve context used to invoke the next valve in the current processing pipeline

Throws:

java.io.IOException - if an input/output error occurs

javax.servlet.ServletException - if a servlet error occurs

toString

public java.lang.String toString()

Return a String rendering of this object.

report

protected void report(Request request,
                      Response response,
                      java.lang.Throwable throwable)
               throws java.io.IOException

Prints out an error report.

Parameters:

request - The request being processed

response - The response being generated

Throws:

exception - The exception that occurred (which possibly wraps a root cause exception

java.io.IOException

log

protected void log(java.lang.String message)

Log a message on the Logger associated with our Container (if any).

Parameters:

message - Message to be logged

log

protected void log(java.lang.String message,
                   java.lang.Throwable throwable)

Log a message on the Logger associated with our Container (if any).

Parameters:

message - Message to be logged

throwable - Associated exception