如何在IIS上為Python2.7正確安裝isapi_wsgi？

Question

我已經在Windows 7上的IIS上安裝了Python作為CGI應用程序。這非常簡單，但我想使用WSGI的東西，以獲得更好的靈活性。

我下載了isapi_wsgi的存檔，解壓縮它，然后根據說明運行安裝，如下所示：

\python27\python.exe setup.py install

這成功了：

在此輸入圖像描述

然后我編寫了一個帶有wsgi膠水的.py模塊，並嘗試安裝它。 這樣失敗了：

在此輸入圖像描述

這是一個COM Moniker錯誤，我知道IIS6兼容的管理內容基於COM Monikers，這提醒我有一個isapi_wsgi與IIS6兼容管理內容的預先請求。 我運行\\windows\\system32\\OptionalFeatures.exe並安裝它，然后重新運行.py模塊並正確安裝。

C:\dev\wsgi>\Python27\python.exe app1_wsgi.py
Configured Virtual Directory: /wsgi
Installation complete.

好的，很好。 現在，當我查看當前目錄時，我看到一個名為_app1_wsgi.dll的新DLL，當我查看IIS管理器時，我可以看到一個新的IIS vdir，以及該vdir中用於'*'的腳本映射，它映射到_app1_wsgi.DLL。 都好。 但！ 向http://localhost/wsgi發出請求給出了500錯誤。

通過一些反復試驗，我發現定義我的處理程序的.py模塊必須位於site-packages目錄中。 我對此感到非常驚訝。

我可以避免這個嗎？ 我可以簡單地將.py模塊放在與生成的.dll文件相同的目錄中嗎？ 或者我是否需要將所有python邏輯部署到site-packages以便從WSGI機制運行它？

Answer 1

答案是：

如問題中所述安裝isapi_wsgi是正確的。
使用app.py的基本樣板，如isapi_wsgi附帶的示例代碼所示，Web應用程序的python類需要位於site-packages目錄中。
可以允許python源模塊與生成的* .dll文件駐留在同一目錄中，但它需要在* wsgi.py文件中進行一些特殊處理。
在Windows上運行python以進行開發的更好方法是簡單地下載Google App Engine並使用內置的專用http服務器。 GAE SDK附帶的框架處理重新加載，並允許將.py模塊放在特定目錄中。

如果您不想下載並安裝GAE SDK，則可以嘗試以下操作。 使用此代碼，當請求到達isapi_wsgi時，處理程序在主目錄中查找py模塊，並加載它。 如果模塊已經加載，它會檢查文件“上次修改時間”，如果最后一個模式時間晚於先前加載的時間，則重新加載模塊。 它適用於簡單的情況但我認為當存在嵌套模塊依賴時它會很脆弱。

import sys
import os
import win32file
from win32con import *

# dictionary of [mtime, module] tuple;  uses file path as key
loadedPages = {}

def request_handler(env, start_response):
    '''Demo app from wsgiref'''
    cr = lambda s='': s + '\n'
    if hasattr(sys, "isapidllhandle"):
        h = None
        # get the path of the ISAPI Extension DLL
        hDll = getattr(sys, "isapidllhandle", None)
        import win32api
        dllName = win32api.GetModuleFileName(hDll)
        p1 = repr(dllName).split('?\\\\')
        p2 = p1[1].split('\\\\')
        sep = '\\'
        homedir = sep.join(p2[:-1])

        # the name of the Python module is in the PATH_INFO
        moduleToImport = env['PATH_INFO'].split('/')[1]

        pyFile = homedir + sep + moduleToImport + '.py'

        fd = None
        try:
            fd = win32file.CreateFile(pyFile, GENERIC_READ, FILE_SHARE_DELETE, None, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0)
        except Exception as exc1:
            fd = None

        if fd is not None:
            # file exists, get mtime
            fd.close()
            mt = os.path.getmtime(pyFile)
        else:
            mt = None


        if mt is not None:
            h = None
            if not pyFile in loadedPages:
                # need a new import
                if homedir not in sys.path:
                    sys.path.insert(0, homedir)

                h = __import__(moduleToImport, globals(), locals(), [])
                # remember
                loadedPages[pyFile] = [mt, h]
            else:
                # retrieve handle to module
                h = loadedPages[pyFile][1]
                if mt != loadedPages[pyFile][0]:
                    # need to reload the page
                    reload(h)
                    loadedPages[pyFile][0] = mt

            if h is not None:
                if 'handler' in h.__dict__:
                    for x in h.handler(env, start_response):
                        yield x
                else:
                    start_response("400 Bad Request", [('Content-Type', 'text/html')])
            else:
                start_response("404 Not Found", [('Content-Type', 'text/html')])
                yield cr()
                yield cr("<html><head><title>Module not found</title>" \
                             "</head><body>")
                yield cr("<h3>404 Not Found</h3>")
                yield cr("<h3>No handle</h3></body></html>")

        else:
            start_response("404 Not Found", [('Content-Type', 'text/html')])
            yield cr()
            yield cr("<html><head><title>Module not found</title>" \
                 "</head><body>")
            yield cr("<h3>404 Not Found</h3>")
            yield cr("<h3>That module (" + moduleToImport + ") was not found.</h3></body></html>")


    else:
        start_response("500 Internal Server Error", [('Content-Type', 'text/html')])
        yield cr()
        yield cr("<html><head><title>Server Error</title>" \
                 "</head><body><h1>Server Error - No ISAPI Found</h1></body></html>")


# def test(environ, start_response):
#     '''Simple app as per PEP 333'''
#     status = '200 OK'
#     start_response(status, [('Content-type', 'text/plain')])
#     return ['Hello world from isapi!']


import isapi_wsgi
# The entry point(s) for the ISAPI extension.
def __ExtensionFactory__():
    return isapi_wsgi.ISAPISimpleHandler(request_handler)


def PostInstall(params, options):
    print "The Extension has been installed"


# Handler for our custom 'status' argument.
def status_handler(options, log, arg):
    "Query the status of the ISAPI?"
    print "Everything seems to be fine..."


if __name__=='__main__':
    # This logic gets invoked when the script is run from the command-line.
    # In that case, it installs this module as an ISAPI.

    #
    # The API provided by isapi_wsgi for this is a bit confusing.  There
    # is an ISAPIParameters object. Within that object there is a
    # VirtualDirs property, which itself is a list of
    # VirtualDirParameters objects, one per vdir.  Each vdir has a set
    # of scriptmaps, usually this set of script maps will be a wildcard
    # (*) so that all URLs in the vdir will be served through the ISAPI.
    #
    # To configure a single vdir to serve Python scripts through an
    # ISAPI, create a scriptmap, and stuff it into the
    # VirtualDirParameters object. Specify the vdir path and other
    # things in the VirtualDirParameters object.  Stuff that vdp object
    # into a sequence and set it into the ISAPIParameters thing, then
    # call the vaguely named "HandleCommandLine" function, passing that
    # ISAPIParameters thing.
    #
    # Clear as mud?
    #
    # Seriously, this thing could be so much simpler, if it had
    # reasonable defaults and a reasonable model, but I guess it will
    # work as is.

    from isapi.install import *

    # Setup the virtual directories -
    # To serve from root, set Name="/"
    sm = [ ScriptMapParams(Extension="*", Flags=0) ]
    vdp = VirtualDirParameters(Name="wsgi", # name of vdir/IIS app
                              Description = "ISAPI-WSGI Demo",
                              ScriptMaps = sm,
                              ScriptMapUpdate = "replace"
                              )

    params = ISAPIParameters(PostInstall = PostInstall)
    params.VirtualDirs = [vdp]
    cah = {"status": status_handler}

    # from isapi.install, part of pywin32
    HandleCommandLine(params, custom_arg_handlers = cah)

使用此模型，請求http：// foo / wsgi / bar將嘗試使用WSGI .dll文件從主目錄加載bar.py. 如果找不到bar.py，則會得到404.如果自上次運行以來bar.py已更新，則會重新加載。 如果無法加載條形，則會獲得500。

bar.py必須公開導出一個名為handler的方法。 該方法必須是生成器。 像這樣：

import time

def handler(env, start_response):
    start_response("200 OK", [('Content-Type', 'text/html')])
    cr = lambda s='': s + '\n'
    yield cr("<html><head><title>Hello world!</title></head><body>")
    yield cr("<h1>Bargle Bargle Bargle</h1>")
    yield cr("<p>From the handler...</p>")
    yield cr("<p>(bargle)</p>")
    yield cr("<p>The time is now: " + time.asctime() + " </p>")
    yield cr("</body></html>")

__all__ = ['handler']

但正如我所說，我認為GAE可能是使用Windows開發Python webapps的更好方法。

Answer 2

把它放在你的腳本之上：

導入站點site.addsitedir（'path / to / your / site-packages'）

你有同樣的問題，用這兩行解決了

如何在IIS上為Python2.7正確安裝isapi_wsgi？

問題描述

2 個解決方案

解決方案1
1 已采納 2012-03-20 04:12:06

解決方案2
-2 2015-02-21 03:31:42

如何在IIS上為Python2.7正確安裝isapi_wsgi？

問題描述

2 個解決方案

解決方案1 1 已采納 2012-03-20 04:12:06

解決方案2 -2 2015-02-21 03:31:42

解決方案1
1 已采納 2012-03-20 04:12:06

解決方案2
-2 2015-02-21 03:31:42