org.jboss.aerogear.controller.filter

Class ErrorFilter

java.lang.Object

org.jboss.aerogear.controller.filter.ErrorFilter

All Implemented Interfaces:

javax.servlet.Filter

@WebFilter(filterName="aerogear-error-filter",
           urlPatterns="/ErrorFilter",
           dispatcherTypes=FORWARD)
public class ErrorFilter
extends Object
implements javax.servlet.Filter

This Filter is used for default error handling when no explicit error route has configured.

See Also:

ErrorHandler

Field Summary

Fields

Modifier and Type	Field and Description
private static String	TEMPLATE

Constructor Summary

Constructors

Constructor and Description
ErrorFilter()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain) Writes a general error page response to the client.
void	init(javax.servlet.FilterConfig filterConfig)
static String	readTemplate(String templatePath, Throwable throwable) Reads the template and makes Throwable available as a variable named 'exception'.
private static void	safeClose(InputStream in)

Methods inherited from class java.lang.Object

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

Field Detail

TEMPLATE

private static final String TEMPLATE

See Also:

Constant Field Values

Constructor Detail

ErrorFilter

public ErrorFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

doFilter

public void doFilter(javax.servlet.ServletRequest request,
            javax.servlet.ServletResponse response,
            javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Writes a general error page response to the client.

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

readTemplate

public static String readTemplate(String templatePath,
                  Throwable throwable)

Reads the template and makes Throwable available as a variable named 'exception'.

The template language used by this method is MVEL2 (http://mvel.codehaus.org/).

Parameters:

templatePath - the path to the template used for displaying the exception.

throwable - the exception to be used in the target template.

Returns:

String the result of processing the passed-in template.

safeClose

private static void safeClose(InputStream in)

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter