动态调用WebService

浏览数：17 / 时间：2015年06月09日

public 
class ServiceProxy {
 
        #region InvokeWebService
        [SecurityPermissionAttribute(SecurityAction.Demand, Unrestricted = true)]
        internal 
static object CallWebService(string 
webServiceAsmxUrl, string 
serviceName, string 
methodName, object[] args) {
 
            var 
client = new 
WebClient();
 
            // Connect To the web service
            var 
stream = client.OpenRead(webServiceAsmxUrl + "?wsdl");
            if 
(stream == null) return 
null;
            // Now read the WSDL file describing a service.
            var 
description = ServiceDescription.Read(stream);
 
            ///// LOAD THE DOM /////////
            // Initialize a service description importer.
            var 
importer = new 
ServiceDescriptionImporter {ProtocolName = "Soap12"};
 
            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.
            var 
nmspace = new 
CodeNamespace();
 
            var 
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);
 
            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
                var 
assemblyReferences = new 
string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" 
};
 
                var 
parms = new 
CompilerParameters(assemblyReferences);
 
                var 
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
                var 
wsvcClass = results.CompiledAssembly.CreateInstance(serviceName);
                if 
(wsvcClass == null) return 
null;
                var 
mi = wsvcClass.GetType().GetMethod(methodName);
 
                return 
mi.Invoke(wsvcClass, args);
 
            }
 
            else 
{
 
                return 
null;
 
            }
 
        }
        #endregion
 
        public 
static object CallWebService(string 
webServiceAsmxUrl, string 
serviceName)
        {
            throw 
new System.NotImplementedException();
        }
    }

            //调用
            var url = "www.myweb.com/service1.asmx";
            var args = new object[2];
            args[0] = "参数1";
            args[1] = "参数2";

            var result = ServiceProxy.CallWebService(url,"服务名称", "方法名称", args);
            
            return result.ToString() ;//Web服务中方法的返回值