从 Spyne 响应变量中删除名称空间

Question

根据特定的 WSDL 实现 WebService。客户无法更改。正确处理来自客户端的请求，但由于变量中的名称空间，客户端抱怨响应。

我想要的（基于WSDL的soapUI响应）：

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:cal="http://callback.foo.com/">
   <soapenv:Header/>
   <soapenv:Body>
      <cal:foo_statusResponse>
         <result>SUCCESS</result>
         <notify>Thanks!</notify>
      </cal:foo_statusResponse>
   </soapenv:Body>
</soapenv:Envelope>

我得到了什么（注意 tns: 关于导致验证问题的变量）：

<senv:Envelope xmlns:tns="http://callback.foo.com/" xmlns:senv="http://schemas.xmlsoap.org/soap/envelope/">
  <senv:Body>
    <tns:foo_statusResponse>
      <tns:result>SUCCESS</tns:result>
      <tns:notify>Thanks!</tns:notify>
    </tns:foo_statusResponse>
  </senv:Body>
</senv:Envelope>

Java 客户端抛出此异常：

[com.sun.istack.SAXParseException2; lineNumber: 2; columnNumber: 162; unexpected element (uri:"http://callback.foo.com/", local:"result"). Expected elements are <{}result>,<{}notify>]

实施片段：

class fooStatusRS(ComplexModel):
    result = Unicode()
    notify = Unicode()

class foo_callback(ServiceBase):
    @srpc(Unicode, Unicode, Unicode, Unicode, statusbarInfo, anotherResponse, 
            _out_header=None, 
            _out_variable_names=("result", "notify"), 
            _returns=(Unicode, Unicode), 
            _out_message_name="foo_statusResponse",
            _operation_name="foo_status_rq")
    def foo_status(foo_id, reply, ref, status, statusbar, another):
        if foo_id:
            print foo_id

        return fooStatusRS(result="SUCCESS", notify="Foo received!")

Answer 1

这是不可能的（目前），维护者在类似的问题 here 中回答了这个问题。

解决方法是为 "method_return_string" 添加 event_manager 的侦听器，然后执行一些字符串操作。

def _method_return_string(ctx):
    ctx.out_string[0] = ctx.out_string[0].replace("tns:result>", "result>")
    ctx.out_string[0] = ctx.out_string[0].replace("tns:notify>", "notify>")

Answer 2

可以通过覆盖 application.interface

中的 nsmap 来修复

    def fix_nsmap(application):
        conversion_dict = {
            'tns': None,
            'senv': 'soap',
        }
        nsmap = application.interface.nsmap
        for k, v in conversion_dict.iteritems():
            nsmap[v] = nsmap[k]
            del nsmap[k]

        application.interface.nsmap = nsmap

    application_security2 = Application(
        [Security2Service],
        tns=NS,
        name='Security2',
        in_protocol=Soap11(),
        out_protocol=Soap11()
    )

    fix_nsmap(application_security2)

nsmap[None] 设置默认 NS

Answer 3

如果您想知道如何为 method_return_string 添加侦听器到 event_manager，请参阅下面的完整示例：

from spyne import Application, rpc, ServiceBase, Iterable, Integer, Unicode

from spyne.protocol.soap import Soap11
from spyne.server.wsgi import WsgiApplication


class HelloWorldService(ServiceBase):
    @rpc(Unicode, Integer, _returns=Iterable(Unicode))
    def say_hello(ctx, name, times):
        for i in range(times):
            yield u'Hello, %s' % name


def on_method_return_string(ctx):
    ctx.out_string[0] = ctx.out_string[0].replace(b'Hello>', b'Good by')

HelloWorldService.event_manager.add_listener('method_return_string', 
                                              on_method_return_string)

application = Application([HelloWorldService], 'spyne.examples.hello.soap',
                          in_protocol=Soap11(validator='lxml'),
                          out_protocol=Soap11())

wsgi_application = WsgiApplication(application)


if __name__ == '__main__':
    import logging

    from wsgiref.simple_server import make_server
    server = make_server('127.0.0.1', 8000, wsgi_application)
    server.serve_forever()

从 Spyne 2.12 开始，这仍然是从响应变量中删除命名空间的唯一方法。

从 Spyne 响应变量中删除名称空间

Remove the namespace from Spyne response variables

python

soap

wsdl

spyne