使用 SUDS 在 Python 中处理错误 [英] Error Handling in Python with SUDS

问题描述

我一直在尝试使用 SUDS 通过 wsdl 文件控制相机.我已经使代码正常工作，但我想将错误处理放入脚本中.我尝试了不同的例外，但无法使脚本正常工作.当我输入无效坐标时，我收到错误消息.下面是我使用的代码，后面是我收到的错误.

I have been trying to control a camera through a wsdl file using SUDS. I have got the code working but I want to place error handling into the script. I have tried different exceptions but am unable to get the script working. When I enter an invalid coordinate I get an error. The code I am using is below followed by the error I am recieving.

#!/home/build/Python-2.6.4/python

import suds
from suds.client import Client

####################################################################
#
#   Python SUDS Script that controls movement of Camera
#
####################################################################
#
#                    Absolute Move Function
#
####################################################################

def absoluteMove():

    # connects to WSDL file and stores location in variable 'client'
    client = Client('http://file.wsdl')

    # Create 'token' object to pass as an argument using the 'factory' namespace
    token = client.factory.create('ns4:ReferenceToken')
    print token

    # Create 'dest' object to pass as an argument and values passed to this object
    dest = client.factory.create('ns4:PTZVector')
    dest.PanTilt._x=400
    dest.PanTilt._y=0
    dest.Zoom._x=1
    print dest

    # Create 'speed' object to pass as an argument and values passed to this object
    speed = client.factory.create('ns4:PTZSpeed')
    speed.PanTilt._x=0
    speed.PanTilt._y=0
    speed.Zoom._x=1
    print speed

    # 'AbsoluteMove' method invoked passing in the new values entered in the above objects

    try:
        result = client.service.AbsoluteMove(token, dest, speed)
    except RuntimeError as detail:
        print 'Handling run-time error:', detail

    print "absoluteMove result ", result

result = absoluteMove() 

错误如下:

No handlers could be found for logger "suds.client"
Traceback (most recent call last):
  File "ptztest.py", line 48, in <module>
    if __name__ == '__main__': result = absoluteMove()    
  File "ptztest.py", line 42, in absoluteMove
    result = client.service.AbsoluteMove(token, dest, speed)
  File "build/bdist.linux-i686/egg/suds/client.py", line 537, in __call__
  File "build/bdist.linux-i686/egg/suds/client.py", line 597, in invoke
  File "build/bdist.linux-i686/egg/suds/client.py", line 632, in send
  File "build/bdist.linux-i686/egg/suds/client.py", line 683, in failed
  File "build/bdist.linux-i686/egg/suds/bindings/binding.py", line 235, in get_fault
suds.WebFault: Server raised fault: 'Error setting requested pan'

我不确定我应该在这里使用哪个例外.有谁知道如何捕捉这个错误.值为 400 的 x 坐标以度为单位，这就是发生错误的原因.

I am not sure which exception I should be using here. Does anyone know how to catch this error. The x coordinate with the value 400 is in degree's that is why the error happens.

谢谢

好的，我找到了解决方案.在 SUDS 中，如果您输入:

Okay I have found the solution. In SUDS if you enter:

faults=False

进入客户端定义，这会捕获故障并给出故障发生的原因.该行应为:

into the client definition, this catches faults and gives the reason why the fault happened. The line should read:

client = Client('http://file.wsdl', faults=False)

我标记为正确答案的帖子也能够发现问题发生了.

The post that I have marked as the correct answer also is able to catch that a problem has happened.

谢谢大家

推荐答案

如果你想捕捉那个异常，你应该把

If you want to catch that exception you should put

try:
    result = client.service.AbsoluteMove(token, dest, speed)
except suds.WebFault as detail:
    ...

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