Python SOAP 调用

发布时间：2019-08-28 09:20:16编辑：auto阅读（1721）

python编写SOAP服务

 

SOAP简介


引用


简单对象访问协议（SOAP，全写为Simple Object Access Protocol）是一种标准化的通讯规范，主要用于Web服务（web service）中。SOAP的出现是为了简化网页服务器（Web Server）在从XML数据库中提取数据时，无需花时间去格式化页面，并能够让不同应用程序之间透过HTTP通讯协定，以XML格式互相交换彼此的数据，使其与编程语言、平台和硬件无关



参考：http://zh.wikipedia.org/wiki/SOAP

http://www.ibm.com/developerworks/cn/xml/x-sisoap/index.html

python的soap包



引用


Older libraries:
    SOAPy: Was the "best," but no longer maintained. Does not work on Python 2.5+
    ZSI: Very painful to use, and development is slow. Has a module called "SOAPpy", which is different than SOAPy (above).

"Newer" libraries:
    SUDS: Very Pythonic, and easy to create WSDL-consuming SOAP clients. Creating SOAP servers is a little bit more difficult.
    soaplib: Creating servers is easy, creating clients a little bit more challenging.
    ladon: Creating servers is much like in soaplib (using a decorator). Ladon exposes more interfaces than SOAP at the same time without extra user code needed.
    pysimplesoap: very lightweight but useful for both client and server - includes a web2py server integration that ships with web2py.




参考: http://stackoverflow.com/questions/206154/whats-the-best-soap-client-library-for-python-and-where-is-the-documentation-f

用SOAPpy编写的一个简单例子

SOAPpy包:http://pypi.python.org/pypi/SOAPpy/

A simple "Hello World" http SOAP server:


Python代码  

1. import SOAPpy  
2. def hello():  
3.     return "Hello World"  
4. server = SOAPpy.SOAPServer(("localhost", 8080))  
5. server.registerFunction(hello)  
6. server.serve_forever()  



And the corresponding client:



Python代码  

1. import SOAPpy  
2. server = SOAPpy.SOAPProxy("http://localhost:8080/")  
3. print server.hello()  



soaplib编写soap server

选用soaplib,因为看对各包的简介，soaplib对服务器端的编写更加简单

soaplib包: http://pypi.python.org/pypi/soaplib/0.8.1

soaplib 2.0的安装

git clone git://github.com/soaplib/soaplib.git
cd soaplib
python setup.py install

参考：http://soaplib.github.com/soaplib/2_0/

soaplib2.0 和 wsgi webserver 编写的一个简单例子

Declaring a Soaplib Service



Python代码  

1. import soaplib  
2. from soaplib.core.service import rpc, DefinitionBase  
3. from soaplib.core.model.primitive import String, Integer  
4. from soaplib.core.server import wsgi 
   
5. from soaplib.core.service import soap
   
6. from soaplib.core.model.clazz import Array  
7.   
8.   
9. class HelloWorldService(DefinitionBase):  
10.     @soap(String,Integer,_returns=Array(String))  
11.     def say_hello(self,name,times):  
12.         results = []  
13.         for i in range(0,times):  
14.             results.append('Hello, %s'%name)  
15.         return results  
16.   
17. if __name__=='__main__':  
18.     try:  
19.         from wsgiref.simple_server import make_server  
20.         soap_application = soaplib.core.Application([HelloWorldService], 'tns')  
21.         wsgi_application = wsgi.Application(soap_application)  
22.         server = make_server('localhost', 7789, wsgi_application)  
23.         server.serve_forever()  
24.     except ImportError:  
25.         print "Error: example server code requires Python >= 2.5"  


SOAP Client



Python代码  

1. >>> from suds.client import Client  
2. >>> hello_client = Client('http://localhost:7789/?wsdl')  
3. >>> result = hello_client.service.say_hello("Dave", 5)  
4. >>> print result  
5.   
6. (stringArray){  
7.    string[] =  
8.       "Hello, Dave",  
9.       "Hello, Dave",  
10.       "Hello, Dave",  
11.       "Hello, Dave",  
12.       "Hello, Dave",  
13.  }  



  

soaplib 2.0 的一个bug

在运行上面的小例子时，服务器端报错：

......
  File "/usr/local/lib/python2.6/dist-packages/soaplib-2.0.0_beta2-py2.6.egg/soaplib/core/_base.py", line 331, in parse_xml_string
    return _parse_xml_string(xml_string, charset)
NameError: global name 'x' is not defined

修改源码包：/usr/local/lib/python2.6/dist-packages/soaplib-2.0.0_beta2-py2.6.egg/soaplib/core/_base.py

line 331


Python代码  

1. ...  
2.     def parse_xml_string(self, xml_string, charset=None):  
3.         #return _parse_xml_string(x, charset)  
4.         return _parse_xml_string(xml_string, charset)  
5. ...  



修改后，例子可以正常运行，这么明显的错误都有，果然是2.0beta版

用rpclib实现soap server

文档：http://arskom.github.com/rpclib/

rpclib服务器端接收对象参数

一个简单例子的实现

SERVER



Python代码  

1. import logging  
2. from rpclib.application import Application  
3. from rpclib.decorator import srpc  
4. from rpclib.interface.wsdl import Wsdl11  
5. from rpclib.protocol.soap import Soap11  
6. from rpclib.service import ServiceBase  
7. from rpclib.model.complex import Iterable  
8. from rpclib.model.primitive import Integer  
9. from rpclib.model.primitive import String  
10. from rpclib.server.wsgi import WsgiApplication  
11. from rpclib.util.simple import wsgi_soap11_application  
12.   
13. class HelloWorldService(ServiceBase):  
14.     @srpc(String, Integer, _returns=Iterable(String))  
15.     def say_hello(name, times):  
16.         ''''' 
17.         Docstrings for service methods appear as documentation in the wsdl 
18.         <b>what fun</b> 
19.         @param name the name to say hello to 
20.         @param the number of times to say hello 
21.         @return the completed array 
22.         '''  
23.         print times  
24.   
25.         for i in xrange(times):  
26.             yield u'Hello, %s' % name  
27.   
28. if __name__=='__main__':  
29.     try:  
30.         from wsgiref.simple_server import make_server  
31.     except ImportError:  
32.         print "Error: example server code requires Python >= 2.5"  
33.   
34.     logging.basicConfig(level=logging.DEBUG)  
35.     logging.getLogger('rpclib.protocol.xml').setLevel(logging.DEBUG)  
36.   
37.     application = Application([HelloWorldService], 'rpclib.examples.hello.soap', interface=Wsdl11(), in_protocol=Soap11(), out_protocol=Soap11())  
38.   
39.     server = make_server('192.168.0.31', 7789, WsgiApplication(application))  
40.   
41.     print "listening to http://192.168.0.31:7789"  
42.     print "wsdl is at: http://192.168.0.31:7789/?wsdl"  
43.   
44.     server.serve_forever()  



 

Client


Python代码  

1. from suds.client import Client  
2. c = Client('http://192.168.0.31:7789/?wsdl')  
3. a = c.service.say_hello(u'punk', 5)  
4. print a