我收到此错误:
HTTP 599:连接已关闭 [E 130405 11:43:14 web:1031] 未捕获的异常 GET /networks/1/sensors/1/alarm (127.0.0.1)
在执行以下代码时:
from tornado.stack_context import ExceptionStackContext
def handle_exc(*args):
print('Exception occured')
return True
@tornado.gen.engine
def check_status_changes(netid, sensid):
como_url = "".join(['http://131.114.52:44444/ztc?netid=', str(netid), '&sensid=', str(sensid), '&start=-5s&end=-1s'])
http_client = AsyncHTTPClient()
response = yield tornado.gen.Task(http_client.fetch, como_url)
if response.error is not None:
print("Terzo")
print response.error
with ExceptionStackContext(handle_exc):
response.rethrow()
else:
print('Handle request')
for line in response.body.split("\n"):
if line != "":
#net = int(line.split(" ")[1])
#sens = int(line.split(" ")[2])
#stype = int(line.split(" ")[3])
value = int(line.split(" ")[4])
print value
yield value
return
class AlarmHandler(BaseHandler):
@tornado.web.authenticated
@tornado.web.asynchronous
@tornado.gen.engine
def get(self, netid, sensid):
self.lock_tables("read", ['devices'])
status = self.db.get("SELECT status from devices \
WHERE id=%s AND network_id=%s", sensid, netid)
print("Primo")
print status
try:
periodic = tornado.ioloop.PeriodicCallback(check_status_changes(netid, sensid), 5000)
value = periodic.start()
print("Secondo")
print value
except:
print("Quarto")
periodic.stop()
self.finish()
return
if value != status['status']:
self.lock_tables("write", ['devices'])
self.db.execute("UPDATE devices SET status=%s \
WHERE id=%s AND network_id=%s", value, netid, sensid)
self.unlock_tables()
self.notice("Status changed")
在课堂AlarmHandler
上有一个名为check_status_changes
. 在这个函数中,当有 response.error 时,我会获取标题的错误。
如何设置 if 错误条件以返回课堂并管理情况?谢谢你。
其他信息
如果我做一个 Tornado 屏幕,我会看到:
普里莫
{'状态':无}
秒
没有任何
泰尔佐
HTTP 599:连接关闭
发生异常
所以,我认为程序在异常是rethtow之前关闭了连接!
在 html 控制台中,我看到了这个错误:
文件“./wsn.py”,第 226 行,在 response.body.split("\n") 中的 check_status_changes 行:AttributeError: 'NoneType' object has no attribute 'split'