ExceptionDisplayServlet (Admin4J API)

java.lang.Object
- javax.servlet.GenericServlet
- - javax.servlet.http.HttpServlet
  - - net.admin4j.ui.servlets.AdminDisplayServlet
    - - net.admin4j.ui.servlets.ExceptionDisplayServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
```
public class ExceptionDisplayServlet
extends AdminDisplayServlet
```
Provides a browser for exception statistics intercepted by the Exception Tracker. By default, exceptions logged by Java Util Logging and Log4J are automatically tracked if they are present in the classpath.
Should you use other logging frameworks, you can have those exceptions tracked by writingand installing a custom appender for that framework. See Log4JExceptionAppender for an example.

You will need to map this servlet to an url pattern (e.g. '/admin4j/error').

This servlet does not require other web resources.

Init parameters for this servlet are as follows:
tracking.time.in.days -- Optional. Default 30 days. Amount of time an exception will be tracked and reportable.
exempted.exception.types -- Optional. Comma delimited list of exception class names that will *not* be tracked.

Author:: D. Ashmore
See Also:: ExceptionTracker, Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

protected org.slf4j.Logger logger

static java.lang.String PUBLIC_HANDLE
- Fields inherited from class net.admin4j.ui.servlets.AdminDisplayServlet
  ADMIN4J_SESSION_VARIABLE_PREFIX

Fields
Modifier and Type	Field and Description
`protected org.slf4j.Logger`	`logger`
`static java.lang.String`	`PUBLIC_HANDLE`

Constructor Summary

Constructors
Constructor and Description

ExceptionDisplayServlet()

Constructors
Constructor and Description
`ExceptionDisplayServlet()`

Method Summary

Methods
Modifier and Type	Method and Description
`static java.util.Set<javax.servlet.http.HttpServlet>`	`getRegisteredServletSet(java.lang.Class klass)`
`java.lang.String`	`getServletLabel()`
`void`	`init()`
`void`	`init(javax.servlet.ServletConfig config)`
`protected void`	`service(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)`

Methods inherited from class net.admin4j.ui.servlets.AdminDisplayServlet
displayFreeMarkerPage, displayFreeMarkerResponse, hasDisplay

Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet
destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, log, log

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PUBLIC_HANDLE

public static final java.lang.String PUBLIC_HANDLE

See Also:: Constant Field Values

logger
```
protected org.slf4j.Logger logger
```

Constructor Detail
- ExceptionDisplayServlet
```
public ExceptionDisplayServlet()
```

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Specified by:: init in interface javax.servlet.Servlet
Throws:: javax.servlet.ServletException

service

protected void service(javax.servlet.http.HttpServletRequest request,
           javax.servlet.http.HttpServletResponse response)
                throws javax.servlet.ServletException,
                       java.io.IOException

Overrides:: service in class javax.servlet.http.HttpServlet
Throws:: javax.servlet.ServletException; java.io.IOException

getServletLabel
```
public java.lang.String getServletLabel()
```
Specified by:

getServletLabel in class AdminDisplayServlet

init
```
public void init()
          throws javax.servlet.ServletException
```
Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

getRegisteredServletSet

public static java.util.Set<javax.servlet.http.HttpServlet> getRegisteredServletSet(java.lang.Class klass)

Class ExceptionDisplayServlet

Field Summary

Fields inherited from class net.admin4j.ui.servlets.AdminDisplayServlet

Constructor Summary

Method Summary

Methods inherited from class net.admin4j.ui.servlets.AdminDisplayServlet

Methods inherited from class javax.servlet.http.HttpServlet

Methods inherited from class javax.servlet.GenericServlet

Methods inherited from class java.lang.Object

Field Detail

PUBLIC_HANDLE

logger

Constructor Detail

ExceptionDisplayServlet

Method Detail

init

service

getServletLabel

init

getRegisteredServletSet