Package org.apache.catalina.filters
Class SessionInitializerFilter
- java.lang.Object
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- org.apache.catalina.filters.SessionInitializerFilter
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- All Implemented Interfaces:
Filter
public class SessionInitializerFilter extends java.lang.Object implements Filter
AFilter
that initializes theHttpSession
for theHttpServletRequest
by calling its getSession() method.This is required for some operations with WebSocket requests, where it is too late to initialize the HttpSession object, and the current Java WebSocket specification does not provide a way to do so.
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Constructor Summary
Constructors Constructor Description SessionInitializerFilter()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
CallsHttpServletRequest
's getSession() to initialize the HttpSession and continues processing the chain.
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Method Detail
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doFilter
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws java.io.IOException, ServletException
CallsHttpServletRequest
's getSession() to initialize the HttpSession and continues processing the chain.- Specified by:
doFilter
in interfaceFilter
- Parameters:
request
- The request to processresponse
- The response associated with the requestchain
- Provides access to the next filter in the chain for this filter to pass the request and response to for further processing- Throws:
java.io.IOException
- if an I/O error occurs during this filter's processing of the requestServletException
- if the processing fails for any other reason
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