BaseHTTPRequestHandler with custom instance

问题

this is my http server:

from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer

class test:
    def show(self):
        return "aaaa"

class http_server:
    def __init__(self, t1):
        self.t1 = t1
        server = HTTPServer(('', 8080), myHandler)
        server.serve_forever()

class myHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header('Content-type','text/html')
        self.end_headers()
        self.wfile.write(self.t1.show()) #Doesnt work
        return

class main:
    def __init__(self):
        self.t1 = test()
        self.server = http_server(self.t1)

if __name__ == '__main__':
    m = main()

I need to acces instance t1 inside of myHander.

Is there any way how to do it ?

Thanks!

回答1:

there a way to do it is to set the property to the class :

from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer

class test:
    def show(self):
        return "aaaa"

class http_server:
    def __init__(self, t1):
        myHandler.t1 = t1
        server = HTTPServer(('', 8080), myHandler)
        server.serve_forever()

class myHandler(BaseHTTPRequestHandler):
    t1 = None
    def do_GET(self):
        self.send_response(200)
        self.send_header('Content-type','text/html')
        self.end_headers()
        self.wfile.write(self.t1.show()) #Doesnt work
        return

class main:
    def __init__(self):
        self.t1 = test()

        self.server = http_server(self.t1)

if __name__ == '__main__':
    m = main()

You have to be careful that's every where you use myHandler that's will be the same instance of t1

回答2:

Slightly better version, where t1 will not be the same for each instance.

from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer

class test:
    def show(self):
        return "aaaa"

class http_server:
    def __init__(self, t1):
        def handler(*args):
            myHandler(t1, *args)
        server = HTTPServer(('', 8080), handler)
        server.serve_forever()

class myHandler(BaseHTTPRequestHandler):
    def __init__(self, t1, *args):
        self.t1 = t1
        BaseHTTPRequestHandler.__init__(self, *args)

    def do_GET(self):
        self.send_response(200)
        self.send_header('Content-type','text/html')
        self.end_headers()
        self.wfile.write(self.t1.show()) #Doesnt work
        return

class main:
    def __init__(self):
        self.t1 = test()

        self.server = http_server(self.t1)

if __name__ == '__main__':
    m = main()

回答3:

I know I'm answering pretty late, but that could probably be helpful for future viewers. There is a really easy way to access t1 like it was asked by using the server variable of the BaseHTTPRequestHandler object:

from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer

class test:
    def show(self):
        return "aaaa"

class http_server:
    def __init__(self, t1):
        server = HTTPServer(('', 8080), myHandler)
        server.t1 = t1
        server.serve_forever()

class myHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header('Content-type','text/html')
        self.end_headers()
        self.wfile.write(self.server.t1.show())
        return

class main:
    def __init__(self):
        self.t1 = test()
        self.server = http_server(self.t1)

if __name__ == '__main__':
    m = main()

来源：https://stackoverflow.com/questions/18444395/basehttprequesthandler-with-custom-instance