HttpServletRequest和ServletRequest
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问题:
请问HttpServletRequest和ServletRequest的区别?
回答:
servlet理论上可以处理多种形式的请求响应形式
http只是其中之一
所以HttpServletRequest、 HttpServletResponse分别是ServletRequest和ServletResponse的子类
参考阅读:
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)
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