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c# - 如何在不通过 SSL 添加服务引用的情况下动态调用 Web 服务

转载 作者:太空宇宙 更新时间:2023-11-03 14:48:46 25 4
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我正在开发一个无需添加服务引用即可调用 Web 服务的客户端。该方法接收一个 XML 作为参数。

static void Main(string[] args)
{
string xmlAux = string.Empty;
string link = "https://test.xxx.com/xxx/xxx.asmx";

string arg1 = @"<tuca> <hd> <t_doc>10</t_doc> <id_user>xxx</id_user> <pwd>xxx</pwd> <id_pais>xxx</id_pais> </hd> <parametros> <par tipo=""tipo_sujeto"">fisico</par> <par tipo=""calificacion"">xxx</par> <par tipo=""CEDULA DE IDENTIDAD"">xxx</par> </parametros> </tuca>";

object[] arguments = { arg1 };

var ws = CallWebService(link, "xxx", "Reporte", arguments);

if (ws != null)
{
xmlAux = ws.ToString();
}
}
[System.Security.Permissions.SecurityPermissionAttribute(System.Security.Permissions.SecurityAction.Demand, Unrestricted = true)]
internal static object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args)
{
System.Net.WebClient client = new System.Net.WebClient();

// Connect To the web service
System.IO.Stream stream = client.OpenRead(webServiceAsmxUrl + "?wsdl");

// Now read the WSDL file describing a service.
var description = System.Web.Services.Description.ServiceDescription.Read(stream);

///// LOAD THE DOM /////////
// Initialize a service description importer.
var importer = new System.Web.Services.Description.ServiceDescriptionImporter();

importer.ProtocolName = "Soap12"; // Use SOAP 1.2.

importer.AddServiceDescription(description, null, null);

// Generate a proxy client.
importer.Style = System.Web.Services.Description.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.
var nmspace = new System.CodeDom.CodeNamespace();

var unit1 = new System.CodeDom.CodeCompileUnit();
unit1.Namespaces.Add(nmspace);

// Import the service into the Code-DOM tree. This creates proxy code that uses the service.
var warning = importer.Import(nmspace, unit1);

if (warning == 0) // If zero then we are good to go
{
// Generate the proxy code
var provider1 = System.CodeDom.Compiler.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" };

var parms = new System.CodeDom.Compiler.CompilerParameters(assemblyReferences);

var results = provider1.CompileAssemblyFromDom(parms, unit1);

// Check For Errors
if (results.Errors.Count > 0)
{
foreach (System.CodeDom.Compiler.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);

var mi = wsvcClass.GetType().GetMethod(methodName);

return mi.Invoke(wsvcClass, args);

}

else
{
return null;
}

}

行内:

return mi.Invoke(wsvcClass, args) 

抛出异常:

InnerException: {"The underlying connection was closed: An unexpected error occurred on a receive."}

Message: Exception has been thrown by the target of an invocation.

最佳答案

我用这篇文章解决了这个问题:

使用 System.Net 和 SOAP 动态调用 Web 服务

http://www.c-sharpcorner.com/uploadfile/f9935e/invoking-a-web-service-dynamically-using-system-net-and-soap/

关于c# - 如何在不通过 SSL 添加服务引用的情况下动态调用 Web 服务,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36387336/

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