令人讨厌的request路径问题

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//得到相对路径 request.getRequestURI()  /MyProject/pages/request.jsp//得到绝对路径 request.getRequestURL() http://localhost:8080/MyProject/pages/request.jsp//得到工程名称   request.getContextPath()        /MyProject//得到所在工程的层路径    request.getServletPath()     /pages/request.jsp

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