public class SessionInitializerFilter extends java.lang.Object implements Filter
Filterthat initializes the
HttpServletRequestby 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.
|Constructor and Description|
|Modifier and Type||Method and Description|
Called by the web container to indicate to a filter that it is being taken out of service.
Called by the web container to indicate to a filter that it is being placed into service.
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws java.io.IOException, ServletException
HttpServletRequest's getSession() to initialize the HttpSession and continues processing the chain.
request- The request to process
response- The response associated with the request
chain- Provides access to the next filter in the chain for this filter to pass the request and response to for further processing
java.io.IOException- if an I/O error occurs during this filter's processing of the request
ServletException- if the processing fails for any other reason
public void init(FilterConfig filterConfig) throws ServletException
The web container cannot place the filter into service if the init method either:
public void destroy()
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