ServletRequest和HttpServletRequest的联系与区别
2013-04-14 22:12
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HttpServletRequest和ServletRequest都是接口
HttpServletRequest继承自ServletRequest
HttpServletRequest比ServletRequest多了一些针对于Http协议的方法。如
，
他们对应的实现类：
javax.servlet.ServletRequestWrapper
(implements javax.servlet.ServletRequest)
javax.servlet.http.HttpServletRequestWrapper
(implements javax.servlet.http.HttpServletRequest)
HttpServletRequest继承自ServletRequest
HttpServletRequest比ServletRequest多了一些针对于Http协议的方法。如
getHeader (String name)，
getMethod ()
，
getSession () 等等。
他们对应的实现类：
javax.servlet.ServletRequestWrapper
(implements javax.servlet.ServletRequest)
javax.servlet.http.HttpServletRequestWrapper
(implements javax.servlet.http.HttpServletRequest)
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