errorpages.py

python web programming 部分

#
# $Workfile: ErrorPages.py $ $Revision: 5 $
# $Date: 10/05/01 12:33a $ $Author: Sholden $
#
import Web

class ErrorPage(Web.Page):

    def Title(self):
        return "Program Error"

    def Realm(self):
        """Return null realm to ensure no authentication requested."""
        return ""

    def NavBar(self):
        return """<A HREF="/">HOME</A>"""

    def Body(self):
        return """<FONT COLOR="RED" SIZE="+1"><P><B><I>Error %d:<BR>
        %s</FONT></I></B></P>""" % (self.ReturnCode(), self.Message())

    def Message(self):
        return "Unspecified problem"

class Error301Page(ErrorPage):

    def Message(self):
        return "Permanently Moved"

    def ReturnCode(self):
        return 301

    def Body(self):
        dest, link = "Unknown location - click for home page", "/"
        for h in self.oheaders:
            s = h.split()
            if s[0] == "Location:":
                dest = link = s[1]
                break
        return '<P>Moved to: <a HREF="%s">%s</A></P>'

class Error404Page(ErrorPage):

    def Message(self):
        return "Page Not Found"

    def ReturnCode(self):
        return 404

class Error405Page(ErrorPage):

    def Message(self):
        return """Illegal Operation"""

    def ReturnCode(self):
        return 401

class Error415Page(ErrorPage):

    def Message(self):
        return """Unknown content type"""

    def ReturnCode(self):
        return 415