閱讀本部落格之前，建議先參考部落格：微信客戶端+微信公眾平臺+新浪雲SAE+Arduino+WS100(控制LED)
不同之處：主要是伺服器使用的語言，本部落格使用的是Python
一、硬體部分
1） Arduino、W5100
連線圖如下：

硬體這邊是我遇到的坑，記錄下來
a. 控制LED燈的pin腳：
很多教程裡都選擇了Pin 13， 但是我購買的板中，Pin13是一個複用引腳，當Arduino和W5100板連線的時候，pin13被佔用了，無法通過pin13來控制LED的開關。因此我更換了pin9
外接一個LED燈， 參考圖如下：

b. Ethernet.begin()連線網路的方式：
根據library資料有五種連線方式:

Ethernet.begin(mac); 
Ethernet.begin(mac, ip); 
Ethernet.begin(mac, ip, dns); 
Ethernet.begin(mac, ip, dns, gateway); 
Ethernet.begin(mac, ip, dns, gateway, subnet); 

當時忽略了一個問題，arduino庫1.0後，支援DHCP模式，所以我再測試的時候，不需要手動設定IP，直接的連線方式如下：Ethernet.begin(mac);
2）Arduino裝置程式燒錄
Arduino IDE

#include "Arduino.h"  
#include <SPI.h>  
#include <Ethernet.h>  


char state = '0';  
char c;  
byte mac[] = {  
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; 

EthernetClient client;  
// arduino1.applinzi.com是我自己的伺服器，你們需要更換成自己的  
char server[] = "arduino1.applinzi.com"
 
;  
int sensrdata = 50;  

unsigned long lastConnectionTime = 0;  
boolean lastConnected = false;
// 設定一個時間間隔，10秒請求一次  
const unsigned long postingInterval = 10*1000;  

void setup()  
{  
// Add your initialization code here  
      Serial.begin(9600);  
      delay(1000);  
      Ethernet.begin(mac);  
      Serial.print("My IP address: ");  
      Serial.println(Ethernet.localIP());  
      pinMode(9, OUTPUT);  
}  

// The loop function is called in an endless loop  
void loop()  
{  
//Add your repeated code here  
      while(client.available()) {  
          state = client.read();  
        if(state == '{'){               //關燈    0  
            Serial.println(state);  
            digitalWrite(9, LOW);  
            delay(3000);  
          }else if(state == '}'){       //開燈    1  
            Serial.println(state);  
            digitalWrite(9, HIGH);   
            delay(3000);  
          }  
      }  

      if (!client.connected() && lastConnected) {  
        Serial.println("disconnecting 2.");  
        client.stop();  
      }  

      if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {  
        if (client.connect(server, 80)) {  

            Serial.println("connecting");  
          // send the HTTP PUT request:  
          client.println("GET / HTTP/1.1");  
          client.println("Host: arduino1.applinzi.com");  
//          client.println("User-Agent: arduino-ethernet");  
          client.println("Connection: close");  
          client.println();  

          lastConnectionTime = millis();  
        }else {  
          Serial.println("connection failed");  
          Serial.println("disconnecting 1.");  
          client.stop();  
        }  
      }  
      lastConnected = client.connected();  
} 

二、伺服器部分
伺服器應用：

資料庫設計：

index.wsgi程式碼

import os

import sae
import web
from handle import Handle

urls = (
    '/', 'Handle'
)

app_root = os.path.dirname(__file__)
templates_root = os.path.join(app_root, 'templates')
render = web.template.render(templates_root)


app = web.application(urls, globals()).wsgifunc()

application = sae.create_wsgi_app(app)

handle.py程式碼

# -*- coding: utf-8 -*-
# filename: handle.py

import hashlib
import web
import reply
import receive
import sae.const
import MySQLdb


class Handle(object):
    def GET(self):
        try:
            data = web.input()
            if len(data) == 0:
                db=MySQLdb.connect(host=sae.const.MYSQL_HOST,port=int(sae.const.MYSQL_PORT), user=sae.const.MYSQL_USER, passwd=sae.const.MYSQL_PASS, db=sae.const.MYSQL_DB)
                cursor = db.cursor()
                sql_query = "SELECT * FROM switch where id=1"
                content=""
                try:
                    cursor.execute(sql_query)
                    results = cursor.fetchall()
                    for row in results:
                        arduino_id = row[0]
                        arduino_state = row[1]
                        content = arduino_state
                except:
                    content = "Error: unable to fetch data"
                if content==1:
                    return "}"
                elif content==0:
                    return "{"
                return None
            signature = data.signature
            timestamp = data.timestamp
            nonce = data.nonce
            echostr = data.echostr
            token = "xxxxxxx" #改成自己的威信token

            list = [token, timestamp, nonce]
            list.sort()
            sha1 = hashlib.sha1()
            map(sha1.update, list)
            hashcode = sha1.hexdigest()
            print "handle/GET func: hashcode, signature: ", hashcode, signature
            if hashcode == signature:
                return echostr
            else:
                return ""
        except Exception, Argument:
            return Argument

    def POST(self):
        try:
            webData = web.data()
            print "Handle Post webdata is ", webData
            recMsg = receive.parse_xml(webData)
            if isinstance(recMsg, receive.Msg) and recMsg.MsgType == 'text':
                toUser = recMsg.FromUserName
                fromUser = recMsg.ToUserName
                content =sae.const.MYSQL_USER
                db=MySQLdb.connect(host=sae.const.MYSQL_HOST,port=int(sae.const.MYSQL_PORT), user=sae.const.MYSQL_USER, passwd=sae.const.MYSQL_PASS, db=sae.const.MYSQL_DB)
                cursor = db.cursor()
                sql_query = "SELECT * FROM switch where id=1"
                sql_update_1 = "UPDATE switch set state=1 where id=1"
                sql_update_0 = "UPDATE switch set state=0 where id=1"
                arduino_id, arduino_state = None, None
                try:
                    cursor.execute(sql_query)
                    results = cursor.fetchall()
                    for row in results:
                        arduino_id = row[0]
                        arduino_state = row[1]
                except:
                    content = "Error: unable to fetch data"
                if recMsg.Content == "open":
                    if arduino_state != 1:

                        try:
                            cursor.execute(sql_update_1)
                            db.commit()
                        except:
                            db.rollback()
                elif recMsg.Content == "close":
                    if arduino_state != 0:

                        try:
                            cursor.execute(sql_update_0)
                            db.commit()
                        except:
                            db.rollback()
                else:
                    content = recMsg.Content
                try:
                    cursor.execute(sql_query)
                    results = cursor.fetchall()
                    for row in results:
                        arduino_id = row[0]
                        arduino_state = row[1]
                    content = "arduino_state:" + str(arduino_state)
                except:
                    content = "Error: unable to fetch data"
                db.close()
                replyMsg = reply.TextMsg(toUser, fromUser, content)
                return replyMsg.send()
            else:
                print "暫且不處理"
                return "success"
        except Exception, Argment:
            return Argment

三、微信公眾平臺
1）註冊微信公眾號
2）啟動伺服器配置
設定–>公眾號設定–>伺服器設定

注意：需要新浪雲伺服器搭建好了，微信伺服器提交才能成功