| Package | Description | 
|---|---|
| javax.servlet | 
 The javax.servlet package contains a number of classes and interfaces that
describe and define the contracts between a servlet class and the
runtime environment provided for an instance of such a class by a
conforming servlet container. 
 | 
| javax.servlet.http | 
 The javax.servlet.http package contains a number of classes and interfaces
that describe and define the contracts between a servlet class
running under the HTTP protocol and the runtime environment provided
for an instance of such a class by a conforming servlet container. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
Filter.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. | 
| Modifier and Type | Method and Description | 
|---|---|
protected void | 
HttpFilter.doFilter(HttpServletRequest req,
        HttpServletResponse res,
        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 | 
HttpFilter.doFilter(ServletRequest req,
        ServletResponse res,
        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. | 
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