python使用suds来调用webservice

对于python仅作为客户端调用webservice的情况，推荐使用suds库来完成，比起zsi，soapy之类，它可以说是相当轻量级，使用非常方便。

安装suds建议使用easy_insall来做。下面是官方的一些例子：

Python代码

from suds.client import Client
url = 'http://localhost:7080/webservices/WebServiceTestBean?wsdl'
client = Client(url)  

#查看该service提供的方法
print client  

Suds - version: 0.3.3 build: (beta) R397-20081121  

Service (WebServiceTestBeanService) tns="http://test.server.enterprise.rhq.org/"
   Prefixes (1):
     ns0 = "http://test.server.enterprise.rhq.org/"
   Ports (1):
     (Soap)
       Methods:
         addPerson(Person person, )
         echo(xs:string arg0, )
         getList(xs:string str, xs:int length, )
         getPercentBodyFat(xs:string name, xs:int height, xs:int weight)
         getPersonByName(Name name, )
         hello()
         testExceptions()
         testListArg(xs:string[] list, )
         testVoid()
         updatePerson(AnotherPerson person, name name, )
   Types (23):
     Person
     Name
     Phone
     AnotherPerson  

1.简单参数调用

Python代码  

result = client.service.getPercentBodyFat('jeff', 68, 170)
print result  

result = client.service.getPercentBodyFat(name='jeff', height=68, weight=170)
print result  

#词典
d = dict(name='jeff', height=68, weight=170)
result = client.service.getPercentBodyFat(**d)
print result  

You have 21% body fat.  

2.复杂参数

Java代码  

person = client.factory.create('Person')
print person  

Java代码

(Person)=
  {
    phone = []
    age = NONE
    name(Name) =
        {
            last = NONE
            first = NONE
        }
   }  

#设置变量

Java代码  

phone = client.factory.create('Phone')
phone.npa = 202
phone.nxx = 555
phone.number = 1212  

Python代码

name = client.factory.create('Name')
name.first = 'Elmer'
name.last = 'Fudd' 

Python代码  

person.name = name
person.age = 35
person.phone = [phone]  

#或者
person.phone.append(phone)  

Java代码  

try:
   person_added = client.service.addPerson(person)
except WebFault, e:
  print e  

在0.3.8以上版本还提供了更简单的调用方式，完美的json

Python代码

person = {}
#根据对象结构构造json  

phone = {
    'npa':202,
    'nxx':555,
    'number':1212,
}  

name = {
    'first':'Elmer',
    'last':'Fudd'
}  

person['name'] = name
person['age'] = 35
person['phone'] = [phone,]  

try:
   person_added = client.service.addPerson(person)
except WebFault, e:
  print e  

3.异常处理

Python代码  

client = client(url, faults=False)
result = client.service.addPerson(person)
print result
( 200, person ...)  

更多可以查看官方文档：https://fedorahosted.org/suds/wiki/Documentation，里面还讲了soap头得安全认证，webservice cache等高级话题，有需要可以查看，都比较详细。