filters
Class RequestDumperFilter

java.lang.Object
  filters.RequestDumperFilter

All Implemented Interfaces:

Filter

public final class RequestDumperFilter
extends Object
implements Filter

Example filter that dumps interesting state information about a request to the associated servlet context log file, before allowing the servlet to process the request in the usual way. This can be installed as needed to assist in debugging problems.

Author:

Craig McClanahan

Constructor Summary

RequestDumperFilter()

Method Summary

void	destroy() Take this filter out of service.
void	doFilter(ServletRequest request, ServletResponse response, FilterChain chain) Time the processing that is performed by all subsequent filters in the current filter stack, including the ultimately invoked servlet.
void	init(FilterConfig filterConfig) Place this filter into service.
String	toString() Return a String representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

RequestDumperFilter

public RequestDumperFilter()

Method Detail

destroy

public void destroy()

Take this filter out of service.

Specified by:

destroy in interface Filter

doFilter

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

Time the processing that is performed by all subsequent filters in the current filter stack, including the ultimately invoked servlet.

Specified by:

doFilter in interface Filter

Parameters:

request - The servlet request we are processing

result - The servlet response we are creating

chain - The filter chain we are processing

Throws:

IOException - if an input/output error occurs

ServletException - if a servlet error occurs

init

public void init(FilterConfig filterConfig)
          throws ServletException

Place this filter into service.

Specified by:

init in interface Filter

Parameters:

filterConfig - The filter configuration object

Throws:

ServletException

toString

public String toString()

Return a String representation of this object.

Overrides:

toString in class Object