我正在开发一个项目,要求我连接到Microsoft Dynamics NAV Web服务,并获取一些数据。但是,我们无法从开发环境访问此Web服务,因此我无法以通常的方式向项目添加Web引用。
有没有办法,通过提供URL,用户,密码和密码,在运行时“动态”连接到Web引用。域?然后创建动态对象,并调用Web服务的方法? (所以我会创建一个控制台应用程序,它只能在生产环境中运行,因为可以访问Web服务)
从我最初的研究中,我发现了一些方法,其中有一个函数,它返回对象类型的对象。我通常会遇到凭证问题:未经授权的访问(401)
顺便说一句,我对这些网络服务都很陌生......
方法我到目前为止一直在使用,没有任何运气:
internal static object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args)
{
System.Net.WebClient client = new System.Net.WebClient();
CredentialCache cc = new CredentialCache();
cc.Add(
new Uri(webServiceAsmxUrl),
"NTLM",
new NetworkCredential("user", "password", "domain"));
client.Credentials = cc;
// Connect To the web service
System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl");
// Now read the WSDL file describing a service.
ServiceDescription description = ServiceDescription.Read(stream);
///// LOAD THE DOM /////////
// Initialize a service description importer.
ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
importer.ProtocolName = "Soap12"; // Use SOAP 1.2.
importer.AddServiceDescription(description, null, null);
// Generate a proxy client.
importer.Style = ServiceDescriptionImportStyle.Client;
// Generate properties to represent primitive values.
importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties;
// Initialize a Code-DOM tree into which we will import the service.
CodeNamespace nmspace = new CodeNamespace();
CodeCompileUnit unit1 = new CodeCompileUnit();
unit1.Namespaces.Add(nmspace);
// Import the service into the Code-DOM tree. This creates proxy code that uses the service.
ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1);
//THIS IS WHERE IT's NOT COMPLYING. warning will be "NoGeneratedCode"
if (warning == 0) // If zero then we are good to go
{
// Generate the proxy code
CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp");
// Compile the assembly proxy with the appropriate references
string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" };
CompilerParameters parms = new CompilerParameters(assemblyReferences);
CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);
// Check For Errors
if (results.Errors.Count > 0)
{
foreach (CompilerError oops in results.Errors)
{
System.Diagnostics.Debug.WriteLine("========Compiler error============");
System.Diagnostics.Debug.WriteLine(oops.ErrorText);
}
throw new System.Exception("Compile Error Occured calling webservice. Check Debug ouput window.");
}
// Finally, Invoke the web service method
object wsvcClass = results.CompiledAssembly.CreateInstance(serviceName);
MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);
return mi.Invoke(wsvcClass, args);
}
else
{
return null;
}
}
它总是返回null。
答案 0 :(得分:0)
是Web服务(或)是WCF服务吗?如果它是WCF服务,那么您可以使用<div class='widgetbox'>
<form method='POST' action=''>
来访问该服务。如果它是一个Web服务,那么您可以从任何Web浏览器访问该服务,前提是您知道如下所示的WSDL文件名
SvcUtil.exe
(OR)
http://servername/apppath/webservicename.asmx
有关详细信息,请参阅此Documentation
答案 1 :(得分:0)
我知道这是一个老帖子,但我偶然发现了同样的问题。我通过改变
来修复它TMyRec = record Val: integer; Bt: byte; It: cardinal; end;
到
importer.ProtocolName = "Soap12"; // Use SOAP 1.2.
ProtocolName的允许值为:
希望能帮助遇到类似问题的人!