spark.servlet

Class SparkFilter

java.lang.Object

spark.servlet.SparkFilter

All Implemented Interfaces:

javax.servlet.Filter

public class SparkFilter
extends Object
implements javax.servlet.Filter

Filter that can be configured to be used in a web.xml file. Needs the init parameter 'applicationClass' set to the application class where the adding of routes should be made.

Author:

Per Wendel

Field Summary

Fields

Modifier and Type	Field and Description
static String	APPLICATION_CLASS_PARAM

Constructor Summary

Constructors

Constructor and Description
SparkFilter()

Method Summary

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
protected SparkApplication	getApplication(javax.servlet.FilterConfig filterConfig) Returns an instance of SparkApplication which on which init() will be called.
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Field Detail

APPLICATION_CLASS_PARAM

public static final String APPLICATION_CLASS_PARAM

See Also:

Constant Field Values

Constructor Detail

SparkFilter

public SparkFilter()

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

getApplication

protected SparkApplication getApplication(javax.servlet.FilterConfig filterConfig)
                                   throws javax.servlet.ServletException

Returns an instance of SparkApplication which on which init() will be called. Default implementation looks up the class name in the filterConfig using the key APPLICATION_CLASS_PARAM. Subclasses can override this method to use different techniques to obtain an instance (i.e. dependency injection).

Parameters:

filterConfig - the filter configuration for retrieving parameters passed to this filter.

Returns:

the spark application containing the configuration.

Throws:

javax.servlet.ServletException - if anything went wrong.

doFilter

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

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter