我正在寻找一个可以轻松链接到我的应用程序的简单 C++ WebService 客户端库.
I'm looking for a simple C++ WebService Client Library that can be easily linked into my application.
最好是这个库:
在你们中的任何人回答 .NET 之前:去过那里，尝试一下.我对 .NET 的主要反对意见是:
Before anyone of you answers .NET: been there, tried it. My major objections against .NET are:
我已经使用 Google 查找过此信息，但找不到.
I already used Google to look up this information, but I couldn't find one.
谢谢
为了进一步澄清这一点，我真的想要一些可以编写这样的代码(或类似风格的代码):
To clarify this further, I really want something where I can write code like this (or something in this style):
SoapClient mySoapClient;
mySoapClient.setURL("http://someserver/somewebservice");
mySoapClient.setMethod("DoSomething");
mySoapClient.setParameter(1,"Hello");
mySoapClient.setParameter(2,12345);
mySoapClient.sendRequest();
string result;
mySoapClient.getResult(result);
没有动态代码生成.
我找到了一个使用动态生成的程序集的解决方案(我之前无法使用).起点是 http://refact.blogspot.com/2007_05_01_archive.html.
I found a solution using on-the-fly-generated assemblies (which I couldn't get working the previous time). Starting point is http://refact.blogspot.com/2007_05_01_archive.html.
例如这是使用 PeriodicTable 网络服务的代码:
E.g. This is the code to use the PeriodicTable web service:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Web;
using System.Web.Services;
using System.Web.Services.Description;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Xml.Serialization;
using System.IO;
using System.Reflection;
namespace GenericSoapClient
{
class Program
{
static void method1()
{
Uri uri = new Uri("http://www.webservicex.net/periodictable.asmx?WSDL");
WebRequest webRequest = WebRequest.Create(uri);
System.IO.Stream requestStream = webRequest.GetResponse().GetResponseStream();
// Get a WSDL
ServiceDescription sd = ServiceDescription.Read(requestStream);
string sdName = sd.Services[0].Name;
// Initialize a service description servImport
ServiceDescriptionImporter servImport = new ServiceDescriptionImporter();
servImport.AddServiceDescription(sd, String.Empty, String.Empty);
servImport.ProtocolName = "Soap";
servImport.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties;
CodeNamespace nameSpace = new CodeNamespace();
CodeCompileUnit codeCompileUnit = new CodeCompileUnit();
codeCompileUnit.Namespaces.Add(nameSpace);
// Set Warnings
ServiceDescriptionImportWarnings warnings = servImport.Import(nameSpace, codeCompileUnit);
if (warnings == 0)
{
StringWriter stringWriter =
new StringWriter(System.Globalization.CultureInfo.CurrentCulture);
Microsoft.CSharp.CSharpCodeProvider prov =
new Microsoft.CSharp.CSharpCodeProvider();
prov.GenerateCodeFromNamespace(nameSpace,
stringWriter,
new CodeGeneratorOptions());
string[] assemblyReferences =
new string[2] { "System.Web.Services.dll", "System.Xml.dll" };
CompilerParameters param = new CompilerParameters(assemblyReferences);
param.GenerateExecutable = false;
param.GenerateInMemory = true;
param.TreatWarningsAsErrors = false;
param.WarningLevel = 4;
CompilerResults results = new CompilerResults(new TempFileCollection());
results = prov.CompileAssemblyFromDom(param, codeCompileUnit);
Assembly assembly = results.CompiledAssembly;
Type service = assembly.GetType(sdName);
//MethodInfo[] methodInfo = service.GetMethods();
List<string> methods = new List<string>();
// only find methods of this object type (the one we generated)
// we don't want inherited members (this type inherited from SoapHttpClientProtocol)
foreach (MethodInfo minfo in service.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly))
{
methods.Add(minfo.Name);
Console.WriteLine (minfo.Name + " returns " + minfo.ReturnType.ToString());
ParameterInfo[] parameters = minfo.GetParameters();
foreach (ParameterInfo pinfo in parameters)
{
Console.WriteLine(" " + pinfo.Name + " " + pinfo.ParameterType.ToString());
}
}
// Create instance of created web service client proxy
object obj = assembly.CreateInstance(sdName);
Type type = obj.GetType();
object[] args0 = new object[] { };
string result0 = (string)type.InvokeMember(methods[0], BindingFlags.InvokeMethod, null, obj, args0);
Console.WriteLine(result0);
object[] args1 = new object[] { "Oxygen" };
string result1 = (string)type.InvokeMember(methods[1], BindingFlags.InvokeMethod, null, obj, args1);
Console.WriteLine(result1);
}
}
}
}
在这段代码中，我明确使用了 methods[0] 和 methods[1] 但实际上你当然会检查方法名称.在这个例子中，我得到了元素周期表中所有元素的名称，然后得到了氧的原子量.
In this code I explicitly use methods[0] and methods[1] but in reality you would check the method names of course. In this example I get the names of all elements in the periodic table, then get the atomic weight of oxygen.
此示例尚不包含支持代理的逻辑.我仍然需要添加这个，但目前，它解决了我最大的问题，即拥有一个通用的 SOAP 客户端.
This example does not yet contain logic to support a proxy. I still need to add this, but for the moment, it solves my biggest problem, namely, having a generic SOAP client.
我知道这段代码是 C# 并且我最初想要一个 C++ 解决方案，但是这段代码证明它可以在 .NET 环境中工作(我仍然可以在我的应用程序的有限部分中使用)，我可能会将此代码改写为 C++/.NET，解决了我的问题.
I know this code is C# and I was originally asking for a C++ solution, but this code proves that it can work in a .NET environment (which I can still use in limited parts of my application), and I will probably rewrite this code into C++/.NET, which solves my problem.
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