suds的基本用法

1. 查看服务接口

import suds
client=suds.client.Client('xxxx_webservice_url')
def get_all_methods(client):
    return [method for method in client.wsdl.services[0].ports[0].methods]

2. 查看某个具体接口的传输参数及类型

def get_method_args(client, method_name):
    method = client.wsdl.services[0].ports[0].methods[method_name]
    input_params = method.binding.input
    return input_params.param_defs(method)

3. 调用接口服务

client.service.xxx_function(....)

4. 关于调试

输出之前调用服务接口时发送了什么soap报文，以及收到什么样的soap报文

print 'last sent:
', client.last_sent()
print 'last recv:
', client.last_received()

 当服务器返回报文格式不规范时(非wsdl中定义的），client.last_received()为None。这个时候显然对联调极为不利。

 那就利用suds自身的日志记录看看咯。设定如下：

import sys
import logging
logger = logging.getLogger('suds')
logger.setLevel(logging.DEBUG)
logger.addHandler(logging.StreamHandler(sys.stdout))

如果只关心传输了什么，则可以限定logger为“suds.transport.http“

import sys
logger = logging.getLogger('suds.transport.http')
logger.setLevel(logging.DEBUG)
logger.addHandler(logging.StreamHandler(sys.stdout))

 5. 异常的捕捉和输出

try:
    client.service.xxx_func(*args, **kwargs)
except suds.WebFault,ex:
    print ex.fault        
    print ex.document

后记：对于第三方库莫名其妙的问题，果断及时拿源码过来剖析（至少debug）

DEMO

 来个demo说明如何运用，如下：

>>> import suds
>>> url='http://www.gpsso.com/webservice/kuaidi/kuaidi.asmx?wsdl'
>>> client = suds.client.Client(url)
>>> print get_all_methods(client)
[KuaidiQuery]
>>> print get_method_args(client, 'KuaidiQuery')
[(Compay, <Element:0x7f6c55bc43d0 name="Compay" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />), (OrderNo, <Element:0x7f6c55bc4450 name="OrderNo" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />)]
>>> print client.service.KuaidiQuery(Company='EMS', OrderNo='1111')
(KuaidiQueryResult){
   API = 
      (API){
         RESULTS = "0"
         MESSAGE = "接口查询成功"
      }
 }
>>> print client.last_sent()
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://gpsso.com/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <ns0:Body>
      <ns1:KuaidiQuery>
         <ns1:OrderNo>1111</ns1:OrderNo>
      </ns1:KuaidiQuery>
   </ns0:Body>
</SOAP-ENV:Envelope>
>>> print client.last_received()
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope>
   <soap:Body>
      <KuaidiQueryResponse xmlns="http://gpsso.com/">
         <KuaidiQueryResult>
            <API>
               <RESULTS>0</RESULTS>
               <MESSAGE>接口查询成功</MESSAGE>
            </API>
         </KuaidiQueryResult>
      </KuaidiQueryResponse>
   </soap:Body>
</soap:Envelope>


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