优化工单模块，增加企微模块

sg_wechat_enterprise/we_api/enterprise/parser.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, unicode_literals
+import xmltodict
+
+from wechatpy.messages import UnknownMessage
+from wechatpy.utils import to_text
+from wechatpy.enterprise.messages import MESSAGE_TYPES
+from wechatpy.enterprise.events import EVENT_TYPES
+
+
+def parse_message(xml):
+    if not xml:
+        return
+    message = xmltodict.parse(to_text(xml))['xml']
+    message_type = message['MsgType'].lower()
+    if message_type == 'event':
+        event_type = message['Event'].lower()
+        message_class = EVENT_TYPES.get(event_type, UnknownMessage)
+    else:
+        message_class = MESSAGE_TYPES.get(message_type, UnknownMessage)
+    return message_class(message)