使用 node-soap 的简单网络服务

Question

我正在尝试使用 Node Js 和 node-soap 使用 SOAP 实现一个简单的 Web 服务，但客户端似乎在使用服务器时遇到了问题。

assert.js:92
  throw new assert.AssertionError({
        ^
AssertionError: invalid message definition for document style binding

我的 wsdl 文件是：

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wscalc1"
                  targetNamespace="http://localhost:8000/wscalc1"
                  xmlns="http://localhost:8000/wscalc1"
                  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
                  xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
                  xmlns:xs="http://www.w3.org/2001/XMLSchema"
                  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">

  <wsdl:message name="sumarRequest">
    <wsdl:part name="a" type="xs:string"></wsdl:part>
    <wsdl:part name="b" type="xs:string"></wsdl:part>
  </wsdl:message>

  <wsdl:message name="multiplicarRequest">
    <wsdl:part name="a" type="xs:string"></wsdl:part>
    <wsdl:part name="b" type="xs:string"></wsdl:part>
  </wsdl:message>

  <wsdl:message name="multiplicarResponse">
    <wsdl:part name="res" type="xs:string"></wsdl:part>
  </wsdl:message>

  <wsdl:message name="sumarResponse">
    <wsdl:part name="res" type="xs:string"></wsdl:part>
  </wsdl:message>


  <wsdl:portType name="calcP">
    <wsdl:operation name="sumar">
      <wsdl:input message="sumarRequest"></wsdl:input>
      <wsdl:output message="sumarResponse"></wsdl:output>
    </wsdl:operation>

    <wsdl:operation name="multiplicar">
      <wsdl:input message="multiplicarRequest"></wsdl:input>
      <wsdl:output message="multiplicarResponse"></wsdl:output>
    </wsdl:operation>
  </wsdl:portType>

  <wsdl:binding name="calcB" type="calcP">
    <soap:binding style="document" 
                  transport="http://schemas.xmlsoap.org/soap/http"/>

    <wsdl:operation name="sumar">
      <soap:operation soapAction="sumar"/>
      <wsdl:input>
        <soap:body use="literal" 
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body use="literal" 
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </wsdl:output>
    </wsdl:operation>

    <wsdl:operation name="multiplicar">
      <soap:operation soapAction="multiplicar"/>
      <wsdl:input>
        <soap:body use="literal" 
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body use="literal" 
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>

  <wsdl:service name="ws">
    <wsdl:port name="calc" binding="calcB">
      <soap:address location="http://localhost:8000/wscalc1"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

server.js

var soap = require('soap');
var http = require('http');

var service = {
    ws: {
        calc: {
            sumar : function(args) {
                var n = args.a + args.b;
                return { res : n };
            },

            multiplicar : function(args) {
                var n = args.a * args.b;
                return { res : n }
            }
        }
    }
}

var xml = require('fs').readFileSync('wscalc1.wsdl', 'utf8'),

server = http.createServer(function(request,response) {
    response.end("404: Not Found: "+request.url)
});

server.listen(8000);
soap.listen(server, '/wscalc1', service, xml);

client.js

var soap = require('soap');
var url = 'http://localhost:8000/wscalc1?wsdl';
soap.createClient(url, function(err, client) {

    if (err) throw err;


    console.log(client.describe().ws.calc);

    client.multiplicar({"a":"1","b":"2"},function(err,res){
        if (err) throw err;

        console.log(res);
    });
});

使用该代码，输出为：

{ sumar: 
   { input: { a1: 'Request', b1: 'Request' },
     output: { res: 'Response' } },
  multiplicar: 
   { input: { a2: 'Request', b2: 'Request' },
     output: { res: 'Response' } } }

assert.js:92
  throw new assert.AssertionError({
        ^
AssertionError: invalid message definition for document style binding

任何帮助将不胜感激

Answer 1

正如 user672320 指出的，client.js 失败的原因是因为使用的 wsdl 的格式是“RPC/literal”，但样式设置为“document”而不是 RPC。

事实上，五种格式中的任何一种都可以用于 wsdl，每种格式都有不同的格式。

请参阅Which style of WSDL should I use?，了解使用哪种样式的讨论。

另外，给出的例子并不完整。

扩展版本见下文：

wsdl 文件：

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wscalc1" targetNamespace="http://localhost:8000/wscalc1" xmlns="http://localhost:8000/wscalc1" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <wsdl:message name="sumarRequest">
    <wsdl:part name="a" type="xs:string"/>
    <wsdl:part name="b" type="xs:string"/>
  </wsdl:message>
  <wsdl:message name="multiplicarRequest">
    <wsdl:part name="a" type="xs:string"/>
    <wsdl:part name="b" type="xs:string"/>
  </wsdl:message>
  <wsdl:message name="multiplicarResponse">
    <wsdl:part name="mulres" type="xs:string"/>
  </wsdl:message>
  <wsdl:message name="sumarResponse">
    <wsdl:part name="sumres" type="xs:string"/>
  </wsdl:message>
  <wsdl:portType name="calcP">
    <wsdl:operation name="sumar">
      <wsdl:input message="sumarRequest"/>
      <wsdl:output message="sumarResponse"/>
    </wsdl:operation>
    <wsdl:operation name="multiplicar">
      <wsdl:input message="multiplicarRequest"/>
      <wsdl:output message="multiplicarResponse"/>
    </wsdl:operation>
  </wsdl:portType>
  <wsdl:binding name="calcB" type="calcP">
    <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="sumar">
      <soap:operation soapAction="sumar"/>
      <wsdl:input>
        <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
      </wsdl:output>
    </wsdl:operation>
    <wsdl:operation name="multiplicar">
      <soap:operation soapAction="multiplicar"/>
      <wsdl:input>
        <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
  <wsdl:service name="ws">
    <wsdl:port binding="calcB" name="calc">
      <soap:address location="http://localhost:8001/wscalc1"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

server.js：

/*jslint node: true */
"use strict";

var soap = require('soap');
var http = require('http');

var service = {
    ws: {
        calc: {
            sumar : function(args) {
                var n = 1*args.a + 1*args.b;
                return { sumres : n };
            },

            multiplicar : function(args) {
                var n = args.a * args.b;
                return { mulres : n };
            }
        }
    }
};

var xml = require('fs').readFileSync('wscalc1.wsdl', 'utf8');

var server = http.createServer(function(request,response) {
    response.end("404: Not Found: "+request.url);
});

server.listen(8001);
soap.listen(server, '/wscalc1', service, xml);

client.js：

var soap = require('soap');
var url = 'http://localhost:8001/wscalc1?wsdl';

soap.createClient(url, function(err, client) {
    if (err) throw err;
    console.log(client.describe().ws.calc);
    client.multiplicar({a: 4,b: 3},function(err,res){
        if (err) throw err;
        console.log(res);
    });
    client.sumar({a: 4,b: 3},function(err,res){
        if (err) throw err;
        console.log(res);
    });
});

代码输出为：

   { sumar:
   { input: { a: 'xs:string', b: 'xs:string' },
     output: { sumres: 'xs:string' } },
  multiplicar:
   { input: { a: 'xs:string', b: 'xs:string' },
     output: { mulres: 'xs:string' } } }
   { mulres: '12' }
   { sumres: '7' }

Answer 2

在 wsdl 文件中，我改变的是从文档到 rpc 的样式，试图使用 client.js 获得另一个响应

我收到的是这个输出。

{ sumar: 
   { input: { a: 'xs:string', b: 'xs:string' },
     output: { res: 'xs:string' } },
  multiplicar: 
   { input: { a: 'xs:string', b: 'xs:string' },
     output: { res: 'xs:string' } } }
{ res: '2' }