The URIs, normalized after decoding, are used for matching the URL patterns with the servlet path.

The URIs, normalized without decoding, are used for matching the context root with the context path.

The decoded values are also stored in the attributes that are added in requests during the forward or include processing. The following table describes whether the stored values are decoded for each attribute specified in requests during the forward or include processing:

Processing	Attribute	Decoding the stored value
Forward	javax.servlet.forward.request_uri	N
	javax.servlet.forward.context_path	N
	javax.servlet.forward.servlet_path	Y
	javax.servlet.forward.path_info	Y
	javax.servlet.forward.query_string	N
Include	javax.servlet.include.request_uri	N
	javax.servlet.include.context_path	N
	javax.servlet.include.servlet_path	Y
	javax.servlet.include.path_info	Y
	javax.servlet.include.query_string	N

Legend:

Y: Decoded

N: Not decoded

For details on each attribute and the values stored in each attribute, see Servlet specifications.

The context path is not decoded and is handled as the original string, so the HTTP session is inherited.