com.caucho.http.security
Class SecurityFilter
java.lang.Object
|
+--com.caucho.http.security.SecurityFilter
- All Implemented Interfaces:
- Filter
- public class SecurityFilter
- extends java.lang.Object
- implements Filter
Method Summary |
void |
destroy()
Called by the web container to indicate to a filter that it is being taken out of service. |
void |
doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
The doFilter method of the Filter is called by the container
each time a request/response pair is passed through the chain due
to a client request for a resource at the end of the chain. |
void |
init(FilterConfig config)
Called by the web container to indicate to a filter that it is being placed into
service. |
void |
setConstraints(AbstractConstraint[] constraints)
|
void |
setMethodMap(java.util.HashMap methodMap)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SecurityFilter
public SecurityFilter()
setConstraints
public void setConstraints(AbstractConstraint[] constraints)
setMethodMap
public void setMethodMap(java.util.HashMap methodMap)
init
public void init(FilterConfig config)
- Description copied from interface:
Filter
- Called by the web container to indicate to a filter that it is being placed into
service. The servlet container calls the init method exactly once after instantiating the
filter. The init method must complete successfully before the filter is asked to do any
filtering work.
The web container cannot place the filter into service if the init method either
1.Throws a ServletException
2.Does not return within a time period defined by the web container
- Specified by:
init
in interface Filter
destroy
public void destroy()
- Description copied from interface:
Filter
- Called by the web container to indicate to a filter that it is being taken out of service. This
method is only called once all threads within the filter's doFilter method have exited or after
a timeout period has passed. After the web container calls this method, it will not call the
doFilter method again on this instance of the filter.
This method gives the filter an opportunity to clean up any resources that are being held (for
example, memory, file handles, threads) and make sure that any persistent state is synchronized
with the filter's current state in memory.
- Specified by:
destroy
in interface Filter
doFilter
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws ServletException,
java.io.IOException
- Description copied from interface:
Filter
- The
doFilter
method of the Filter is called by the container
each time a request/response pair is passed through the chain due
to a client request for a resource at the end of the chain. The FilterChain passed in to this
method allows the Filter to pass on the request and response to the next entity in the
chain.
A typical implementation of this method would follow the following pattern:-
1. Examine the request
2. Optionally wrap the request object with a custom implementation to
filter content or headers for input filtering
3. Optionally wrap the response object with a custom implementation to
filter content or headers for output filtering
4. a) Either invoke the next entity in the chain using the FilterChain object (chain.doFilter()
),
4. b) or not pass on the request/response pair to the next entity in the filter chain to block the request processing
5. Directly set headers on the response after invokation of the next entity in ther filter chain.
- Specified by:
doFilter
in interface Filter