ErrorReportValve (Tomcat API Documentation)
Keywords: org.apache.catalina.valves.ErrorReportValve class

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## org.apache.catalina.valves
Class ErrorReportValve

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

All Implemented Interfaces:
  javax.management.MBeanRegistration, 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: 543307 $ $Date: 2007-06-01 01:08:24 +0200 (Fri, 01 Jun 2007) $
Author:
  Remy Maucherat, Craig R. McClanahan, Nicola Ken Barozzi Aisa, Stefano Mazzocchi, Yoav Shapira

Field Summary
`protected static StringManager` | `sm` The StringManager for this package.

Fields inherited from class org.apache.catalina.valves.ValveBase
`container, containerLog, controller, domain, mserver, next, oname`

Constructor Summary
`ErrorReportValve()`

Method Summary
`java.lang.String` | `getInfo()` Return descriptive information about this Valve implementation.
`protected java.lang.String` | `getPartialServletStackTrace(java.lang.Throwable t)` Print out a partial servlet stack trace (truncating at the last occurrence of javax.servlet.).
`void` | `invoke(Request request, Response response)` Invoke the next Valve in the sequence.
`protected void` | `report(Request request, Response response, java.lang.Throwable throwable)` Prints out an error report.

Methods inherited from class org.apache.catalina.valves.ValveBase
`backgroundProcess, createObjectName, event, getContainer, getContainerName, getController, getDomain, getNext, getObjectName, getParentName, postDeregister, postRegister, preDeregister, preRegister, setContainer, setController, setNext, setObjectName, toString`

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)
                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
  Throws:
    `java.io.IOException` - if an input/output error occurs
    `javax.servlet.ServletException` - if a servlet error occurs

### report

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

  Prints out an error report.

  Parameters:
    `request` - The request being processed
    `response` - The response being generated
    `throwable` - The exception that occurred (which possibly wraps a root cause exception

### getPartialServletStackTrace

    protected java.lang.String getPartialServletStackTrace(java.lang.Throwable t)

  Print out a partial servlet stack trace (truncating at the last occurrence of javax.servlet.).

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