http request

Request format  http://locolhost:port/contextpath/pathinfo?queryStringkey=querstringvalue

如果请求的地址为
http://www.cnblogs.com/default.aspx/books
Request.PathInfo 值为 /books
Request.Path 值为 http://www.cnblogs.com/default.aspx/books
Request.RawUrl 值为 http://www.cnblogs.com/default.aspx/books

如果请求地址为
http://www.cnblogs.com/defaut.aspx?id=1&name=kk
Request.PathInfo 值为 ""(空字符串)
Request.Path 值为 http://www.cnblogs.com/default.aspx
Request.RawUrl 值为 http://www.cnblogs.com/default.aspx?id=1&name=kk

localhost:8080/test/servlet/control/Products/Search ,
/test应是 ContextPath
/servlet/control是 ServletPath

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