ServletRequest和HttpServletRequest的联系与区别_JAVA_编程开发_程序员俱乐部

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)?