“未找到动作标头"使用SOAP Web服务时出现错误消息 [英] "No Action header was found" error message while using SOAP webservice

问题描述

在iOS App中使用SOAP Web服务时出现以下错误

Getting following error while consuming SOAP webservice in iOS App

"No Action header was found with namespace 'http://www.w3.org/2005/08/addressing' for the given message."

同一Web服务在SOAP UI工具中正常工作.

The same webservice working fine in SOAP UI Tool.

以下是请求格式

NSString *data = @"<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:tem=\"http://tempuri.org/\">
<soap:Header></soap:Header>
<soap:Body><tem:GetEvaluators></tem:GetEvaluators></soap:Body>
</soap:Envelope>";

NSString *url = @"webservice url";
NSData *postData = [data dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:url]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:postData];
[request setTimeoutInterval:20.0];
[request setValue:@"application/soap+xml;charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"http://tempuri.org/IATCService/GetEvaluators" forHTTPHeaderField:@"SOAPAction"];
 NSData *urlData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

从网络服务接收到完整的错误响应

Complete error response received from webservice

<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
    <a:Action s:mustUnderstand="1">http://www.w3.org/2005/08/addressing/fault</a:Action>
</s:Header>
<s:Body>
    <s:Fault>
        <s:Code>
            <s:Value>s:Sender</s:Value>
            <s:Subcode>
                <s:Value>a:MessageAddressingHeaderRequired</s:Value>
            </s:Subcode>
        </s:Code>
        <s:Reason>
            <s:Text xml:lang="en-US">No Action header was found with namespace 'http://www.w3.org/2005/08/addressing' for the given message.</s:Text>
        </s:Reason>
        <s:Detail>
            <a:ProblemHeaderQName>a:Action</a:ProblemHeaderQName>
        </s:Detail>
    </s:Fault>
</s:Body>

任何帮助都很感激.

推荐答案

我们在基于ASP.NET的服务器上遇到了相同的问题(使用python/suds时出现错误消息，相同的查询在SoapUi中起作用)；经过大量的研究，我们发现需要添加一个包含动作的SOAP标头(作为XML元素)；仅在Content-Type或SOAPAction标头中执行操作是不够的(但也不会对两者造成伤害).这是一个成功查询的示例(来自SoapUi):

We had the same problem with an ASP.NET-based server (error message when using python/suds, same query worked in SoapUi); after a lot of digging, we found that we need to add a SOAP header (as XML element) which contains the action; having the action in the Content-Type or SOAPAction headers was not enough (but does not hurt either). Here's an example of a successful query (from SoapUi):

<SOAP-ENV:Envelope xmlns:ns0="..." xmlns:ns1="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope">
   <SOAP-ENV:Header xmlns:wsa="http://www.w3.org/2005/08/addressing"><wsa:Action>http://www.foo.com/.../SomeJob/getParameters</wsa:Action></SOAP-ENV:Header>
   <ns1:Body>
      <ns0:getParameters>...</ns0:getParameters>
   </ns1:Body>
</SOAP-ENV:Envelope>

使用Python和SUDS，这就是我们的方法:

With Python and SUDS, this is how we did it:

from suds.sax.element import Element
wsans = ('wsa', "http://www.w3.org/2005/08/addressing")
client.set_options(soapheaders = Element('Action', ns=wsans).setText(action))

可以从方法中查询操作，即，如果要调用方法client.service.foo，请使用

The action can be queried from the method, i.e. if you want to call a method client.service.foo, use

action = client.service.foo.method.soap.action

我们通过查看SoapUi HTTP日志发现了这一点. (我们也尝试过Wireshark，但这不能用，因为我们试图使用我们不拥有的https服务器.)

We found this by looking at the SoapUi HTTP log. (We also tried Wireshark, but that would not work because we're trying to use an https server which we don't own.)

这篇关于“未找到动作标头"使用SOAP Web服务时出现错误消息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！