IOTOS物联中台从0到1开发webservice接口驱动 实例详解

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账号：iotos_test    密码：iotos123

代码地址：IOTOSDK-Python: IOTOS Python版本SDK，自带原生接口和采集引擎 (gitee.com)

目录

一、驱动目的

二、Web service杂谈

Web service三要素

三、驱动代码

四、驱动解析

五、使用示例

---

一、驱动目的

使用驱动开发Web services跨平台，跨语言，跨设备之间的通信。

二、Web service杂谈

Web service三要素

• SOAP：SOAP协议
• WSDL：Web service描述语言
• XML：可扩展性标记语言

三、驱动代码

#!coding:utf8
import json
import time
import traceback
import logging
import sys
sys.path.append("..")
from driver import *

from soaplib import *
from spyne import Application, rpc, ServiceBase
from spyne import Integer, Unicode, Array
from spyne.protocol.soap import Soap11
from spyne.server.wsgi import WsgiApplication
from wsgiref.simple_server import make_server
import sys
from spyne.model.complex import ComplexModel
from pymysql import connect
import os,base64,logging

logging.basicConfig(level=logging.DEBUG, filename='my_server.log')
logging.getLogger('spyne.application.server').setLevel(logging.DEBUG)

class Project(ComplexModel):
    __namespace__ = 'Project'
    name = Unicode
    phone = Unicode
    address = Unicode
    location = Unicode
    time = Unicode
    level = Unicode
    message = Unicode

class SServices(ServiceBase):
    @rpc(Project, _returns=Unicode)
    def make_func(self, project):
        return u"链接成功，webservice 服务器已接收到数据"

class AlcoholDriver(IOTOSDriverI):
	
	def InitComm(self,attrs):
		try:
			paramtmp = self.sysAttrs['config']['param']

			ip = "127.0.0.1"
			port = 6667
			soap_app = Application([SServices],
								   'SampleServices',
								   in_protocol=Soap11(validator="lxml"),
								   out_protocol=Soap11())
			wsgi_app = WsgiApplication(soap_app)
			server = make_server(ip, port, wsgi_app)
			self.online(True)
			sys.exit(server.serve_forever())
		except:
			traceback.print_exc()

	def Collecting(self, dataId):
		time.sleep(99999)
		return ()

	def Event_customBroadcast(self, fromUuid, type, data):
		'''*************************************************

		TODO 

		**************************************************'''
		return json.dumps({'code':0, 'msg':'', 'data':''})

	def Event_getData(self, dataId, condition = ''):
		return json.dumps({'code':0, 'msg':'', 'data':''})

	def Event_setData(self, dataId, value):
		return json.dumps({'code':0, 'msg':'', 'data':''})

	def Event_syncPubMsg(self, point, value):
		'''*************************************************

		TODO 
		
		**************************************************'''
		return json.dumps({'code':0, 'msg':'', 'data':''})

四、驱动解析

• 导入相应的包，运行环境为python2，且soaplib只支持python2、soaplib也不再更新了。

from soaplib import *
from spyne import Application, rpc, ServiceBase
from spyne import Integer, Unicode, Array
from spyne.protocol.soap import Soap11
from spyne.server.wsgi import WsgiApplication
from wsgiref.simple_server import make_server
import sys
from spyne.model.complex import ComplexModel
from pymysql import connect
import os,base64,logging

• 记录Web service服务端的logging文件。

logging.basicConfig(level=logging.DEBUG, filename='my_server.log')
logging.getLogger('spyne.application.server').setLevel(logging.DEBUG)

• 声明接收的客户端的变量名、字段、xml标签。

数据多的话就用model，必须声明空间，创建对象或者字典都可以，即作为对象的一个属性，或者字典键值对来保存数据的传递。不然会报错！

class Project(ComplexModel):
    __namespace__ = 'Project'
    name = Unicode
    phone = Unicode
    address = Unicode
    location = Unicode
    time = Unicode
    level = Unicode
    message = Unicode

• 声明服务的类、方法，即客户端访问的服务、业务逻辑、操作。

class SServices(ServiceBase):
    @rpc(Project, _returns=Unicode)
    def make_func(self, project):
        return u"链接成功，webservice 服务器已接收到数据"

• 执行。ip、port是自己所选的地址

在驱动通讯初始化时创建SServices服务，服务调用make_fun函数。

	def InitComm(self,attrs):
		try:
			paramtmp = self.sysAttrs['config']['param']

			ip = "127.0.0.1"
			port = 6667
			soap_app = Application([SServices],
								   'SampleServices',
								   in_protocol=Soap11(validator="lxml"),
								   out_protocol=Soap11())
			wsgi_app = WsgiApplication(soap_app)
			server = make_server(ip, port, wsgi_app)
			self.online(True)
			sys.exit(server.serve_forever())
		except:
			traceback.print_exc()

• 设置驱动循环采集时长

	def Collecting(self, dataId):
		time.sleep(99999)
		return ()

运行驱动后，在浏览器输入https//127.0.0.1:6667/SServices/?wsdl就能看到本地服务端已开启！

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