利用nohup命令创建启动服务
http://www.cnblogs.com/taosim/articles/2610170.html
Linux 技巧：让进程在后台可靠运行的几种方法
[root@PandoraBox:/mnt/sda1/projects/openwrtpytest/utils]#opkg -d usb install /mn
t/sda1/ipk/coreutils_8.16-1_ramips_24kec.ipk
Installing coreutils (8.16-1) to usb...
Configuring coreutils.
[root@PandoraBox:/mnt/sda1/projects/openwrtpytest/utils]#opkg -d usb install /mn
t/sda1/ipk/coreutils-nohup_8.16-1_ramips_24kec.ipk
Installing coreutils-nohup (8.16-1) to usb...
Configuring coreutils-nohup.
后面的&是后台运行
Linux shell中有三种输入输出，分别为标准输入，标准输出，错误输出，分别对应0，1，2
ps命令无法看到nohup的job,用jobs -l
用nohup执行python程序时，print无法输出
nohup python test.py > nohup.out 2>&1 &
发现nohup.out中显示不出来python程序中print的东西。
这是因为python的输出有缓冲，导致nohup.out并不能够马上看到输出。
python 有个-u参数，使得python不启用缓冲。
nohup python -u test.py > nohup.out 2>&1 &
创建启动服务
/etc/init.d/wechat
#!/bin/sh /etc/rc.common
# Example script
# Copyright (C) 2007 OpenWrt.org START=10
STOP=15 start() {
echo "wechat start" >> /mnt/sda1/temp/log
date -R >> /mnt/sda1/temp/log
nohup python -u /mnt/sda1/projects/openwrtpytest/utils/webhelper.py 2>>/mnt/sda1/temp/log 1>>/mnt/sda1/temp/log & # commands to launch application
} stop() {
echo "wechat stop" >> /mnt/sda1/temp/log
date -R >> /mnt/sda1/temp/log
# commands to kill application
chmod 777 /etc/init.d/wechat
启动
/etc/init.d/wechat start
注意wechat里面的\r\n要换成linux下的\n，不然会出错
如果重复启动后报错端口被占用，要先把原先的进程杀掉
error: [Errno 125] Address already in use
[root@PandoraBox:/mnt/sda1/projects/openwrtpytest/utils]#netstat -atpn | grep 8001
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:8001 0.0.0.0:* LISTEN 2626/python
kill 2626
webhelper.py
from wsgiref.simple_server import make_server
from wechat import app PORT = 8001
httpd = make_server('', PORT, app)
httpd.allow_reuse_address = True
httpd.serve_forever()
wechat.py
#!/mnt/sda1/opkg/usr/bin/python
#coding:utf-8
import sys
reload(sys)
sys.setdefaultencoding('utf8')
import time
from flask import Flask, request,make_response,render_template
import hashlib
import xml.etree.ElementTree as ET
import loghelper
import traceback
import requests
import os
import pprint
import uniout
import apihelper
import yaml
import pickledb app = Flask(__name__)
app.debug=True
logger = loghelper.create_logger(r'/mnt/sda1/temp/log')
app_root = os.path.dirname(__file__)
templates_root = os.path.join(app_root, 'templates/reply_text.xml')
api = apihelper.ApiHelper()
cachefpath='../data/cache.db'
cachedb = pickledb.load(cachefpath,True) @app.route('/',methods=['GET','POST'])
def wechat_auth():
msg = "funcname : %s , request.args : %s" % (__name__ ,request.args)
logger.info(msg)
response = make_response("")
try:
if request.method == 'GET':
token='weixintest'
data = request.args
pprint.pprint( "Request get data:",data)
signature = data.get('signature','')
timestamp = data.get('timestamp','')
nonce = data.get('nonce','')
echostr = data.get('echostr','')
s = [timestamp,nonce,token]
s.sort()
s = ''.join(s)
if (hashlib.sha1(s).hexdigest() == signature):
response = make_response(echostr)
else:
response = make_response("Not Valid!")
else:
rec = request.stream.read()
print "Request post data:",rec
xml_rec = ET.fromstring(rec)
datadict = get_replydata(xml_rec)
pprint.pprint(datadict)
render = render_template("reply_text.xml",dict=datadict)
response = make_response(render)
#xml_rep = get_response(xml_rec)
#response = make_response(xml_rep)
response.content_type='application/xml;charset=utf-8'
except Exception,e:
type =xml_rec.find("MsgType").text
tou = xml_rec.find('ToUserName').text
fromu = xml_rec.find('FromUserName').text
datadict = {"to":fromu,"from":tou,"time":str(int(time.time())),"type":type,"msg":e.message}
render = render_template("reply_text.xml",dict=datadict)
response = make_response(render)
# log the exception
err = "exception : %s , %s" % (e.message ,traceback.format_exc())
logger.exception(err)
finally:
#pprint.pprint( request.__dict__)
pprint.pprint( response.__dict__)
return response def get_replydata(xml_rec):
'''
import xml2dict
xml = xml2dict.XML2Dict()
r = xml.fromstring(textdata)
r.get('xml').get('FromUserName').get('value')
'''
type =xml_rec.find("MsgType").text
tou = xml_rec.find('ToUserName').text
fromu = xml_rec.find('FromUserName').text
datadict = {"to":fromu,"from":tou,"time":str(int(time.time())),"type":type,"msg":""}
if type == 'image' or type == 'voice':
dmedia_id = xml_rec.find('MediaId').text
purl = xml_rec.find('PicUrl').text
fname = xml_rec.find('CreateTime').text
import urllib
urllib.urlretrieve(purl,'/mnt/sda1/data/image/%s.jpg' % fname)
print purl
elif type == 'location':
locx = xml_rec.find('Location_X').text
locy = xml_rec.find('Location_Y').text
scale = xml_rec.find('Scale').text
location = xml_rec.find('Label').text
wjdu="%s,%s" % (locx,locy)
data = api.location(wjdu)
datadict["msg"]=data
else:
content = xml_rec.find("Content").text
data = get_replytext(content)
datadict["msg"]=data
print datadict.get("msg")
return datadict def get_replytext(content):
content = content.strip()
print 'enter content :',content
cvalue = cachedb.get(content)
cvalue =None
if cvalue<>None:
print 'get it from cache'
data=cvalue
else:
if content.lower().startswith("ip"):
content=content.replace("ip","").strip()
data = api.ip(content)
elif content.startswith(u"航班"):
data=api.airline(content)
elif content.startswith(u"火车"):
data=api.train(content)
elif content.startswith(u"翻译"):
data=api.translator(content)
elif content.startswith(u"手机"):
data=api.mobile(content)
elif content.startswith(u"简体") or content.startswith(u"繁体"):
data=api.tradition(content)
elif content.startswith(u"汇率"):
data=api.huilv(content)
else:
data = api.weather(content)
cachedb.set(content,data)
return data if __name__ == '__main__':
path='../conf/test.yaml'
with open(path) as f:
x=yaml.load(f)
textdata = x.get('textdata')
wxlink = x.get('wxlink')
r=requests.get(wxlink)
print r.text
r=requests.post(wxlink,textdata)
print r.text
这里实现了查询航班，火车，汇率，中英文翻译，简繁体转换，查询当前IP，手机所在地的功能
代码放在github上
https://github.com/sui84/openwrtpytest
https://github.com/sui84/openwrtpytest
另外pandorbox上的python安装文件为了可以运行有些改动，放在这里
https://github.com/sui84/PandorboxPython27