单选题Which is the true choice about the web container request processing model（）？A The init method on a filter is called the first time a servlet mapped to that filter is invokedB A filter defined for a servlet must always forward control to the next resource in the filter chain.C Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor fileD If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it
单选题
Which is the true choice about the web container request processing model（）？
A
The init method on a filter is called the first time a servlet mapped to that filter is invoked
B
A filter defined for a servlet must always forward control to the next resource in the filter chain.
C
Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file
D
If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it
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