Question

调用Webservices后，它会向客户端返回一个对象（此对象是一个自定义对象类）。所以，我想从这个对象转换为自定义类。

-Webservices：

[WebMethod]
public Cls_ROLES GetRoles(int firstNum)
{
    Cls_ROLES o = new Cls_ROLES();
    o.Role_ID = 2;
    o.RoleName = "binh";
    return o;
}

- 客户端：

+功能：

public object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args)
{
    System.Net.WebClient client = new System.Net.WebClient();
    //-Connect To the web service
    using (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);
        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)
            {
                StringBuilder sb = new StringBuilder();
                foreach (CompilerError oops in results.Errors)
                {
                    sb.AppendLine("========Compiler error============");
                    sb.AppendLine(oops.ErrorText);
                }
                throw new System.ApplicationException("Compile Error Occured calling webservice. " + sb.ToString());
            }
            //--Finally, Invoke the web service method 
            Type foundType = null;
            Type[] types = results.CompiledAssembly.GetTypes();
            foreach (Type type in types)
            {
                if (type.BaseType == typeof(System.Web.Services.Protocols.SoapHttpClientProtocol))
                {
                    Console.WriteLine(type.ToString());
                    foundType = type;
                }
            }

            object wsvcClass = results.CompiledAssembly.CreateInstance(foundType.ToString());
            MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);
            object o = new object();
            o=mi.Invoke(wsvcClass, args);
            return o;
        }
        else
        {
            return null;
        }
    }
}

+ Page_Load功能：

Line 1:object[] args=new object[1];
Line 2:args[0]=1;  
Line 3:o = this.CallWebService("http://localhost:1814/HelloServices/Service.asmx", "Hello", "GetRoles", args);

它将Line3（此对象是自定义对象类）的对象返回给客户端。所以，我想从这个对象转换为自定义类（Cls_Role对象）。 // ================================================ ====================================== // ================================================ ====================================== // ================================================ ====================================== 正如Selalu_Ingin_Belajar的回答，我可以从网络服务到客户端获得价值。

对象yourObject = new object（）;

foreach (PropertyInfo property in yourObject.GetType().GetProperties())
{           
    object value = property.GetValue(yourObject , null);
    Console.WriteLine("{0} = {1}", property.Name, value);
}

除此之外，当我申请另一个项目时，它显示另一个错误：参数计数不匹配。如果我使用VisualStudio工具的AddWebReference。它会自动生成Reference.cs文件。它包含：

/// <remarks/>
    [System.Web.Services.Protocols.SoapRpcMethodAttribute("", RequestNamespace="urn:ALBAPI", ResponseNamespace="urn:ALBAPI")]
    [return: System.Xml.Serialization.SoapElementAttribute("info")]
    public ResponseInfo getSetupLicenseRows(out SetupLicenseRowsValues values) {
        object[] results = this.Invoke("getSetupLicenseRows", new object[0]);
        values = ((SetupLicenseRowsValues)(results[1]));
        return ((ResponseInfo)(results[0]));
    }

这样，通过传递对象SetupLicenseRowsValues类可以很容易地从webClient调用。现在，我必须手动将参数传递给WebServices。不要使用此生成文件。

客户端：

public object CallWebService(string webServiceAsmxUrl, string serviceName, string methodName, object[] args)
        {
            System.Net.WebClient client = new System.Net.WebClient();
            //-Connect To the web service
            using (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);
                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)
                    {
                        StringBuilder sb = new StringBuilder();
                        foreach (CompilerError oops in results.Errors)
                        {
                            sb.AppendLine("========Compiler error============");
                            sb.AppendLine(oops.ErrorText);
                        }
                        throw new System.ApplicationException("Compile Error Occured calling webservice. " + sb.ToString());
                    }
                    //--Finally, Invoke the web service method 
                    Type foundType = null;
                    Type[] types = results.CompiledAssembly.GetTypes();
                    foreach (Type type in types)
                    {
                        if (type.BaseType == typeof(System.Web.Services.Protocols.SoapHttpClientProtocol))
                        {
                            Console.WriteLine(type.ToString());
                            foundType = type;
                        }
                    }

                    object wsvcClass = results.CompiledAssembly.CreateInstance(foundType.ToString());
                    MethodInfo mi = wsvcClass.GetType().GetMethod(methodName);
                    object o = new object();
                    Line error: o = mi.Invoke(wsvcClass, new object[0]);
                    return o;
                }
                else
                {
                    return null;
                }
            }
        }
public void call()
    {
        string WebserviceUrl = "http://192.168.2.19:3333/ALBAPI.wsdl";
        string serviceName = "ALBAPI";
        string methodName = "getSetupLicenseRows";
        object[] args=new object[0];
        object sSessionID = CallWebService(WebserviceUrl, serviceName, methodName,args);
        foreach (PropertyInfo property in sSessionID.GetType().GetProperties())
        {
            object value = property.GetValue(sSessionID, null);

            Console.WriteLine("{0} = {1}", property.Name, value);
        }

    }

现在，它在Line错误中显示错误“参数计数不匹配”。无论如何，谢谢你的帮助

Answer 1

现在，如果我理解正确，并且由于您经历了动态构建代理（而不是使用服务引用）的繁琐工作，这将意味着您的使用者代码不包含任何对象的实际定义您可能的服务可能会返回。

在这种情况下，我没有看到通过静态类型代码可以实现的许多方法。您可以尝试使用dynamic并希望您的响应具有您期望的“结构”，但不知道真实类型。如：

dynamic returnValue = CallWebservice(someEndpoint, someServiceName, ...);
//now you can access all the properties of returnValue, for example:
Console.WriteLine(returnValue.Role_ID);
//but you won't have intellisense, may be error prone, and will prevent you from proper refactoring

Answer 2

只需右键单击您的客户端项目即可使用Web/Service Reference并发现此Web Service。提供适当的namespace名称，然后单击“确定”。

此过程将根据Proxy中公开的模式自动生成GetRoles Cls_ROLES方法以及客户端上的自定义类类型WSDL。

Answer 3

如果您只想获取对象的每个参数的值，可以使用反射。

object yourObject = new object();

foreach (PropertyInfo property in yourObject.GetType().GetProperties())
{           
    object value = property.GetValue(yourObject , null);
    Console.WriteLine("{0} = {1}", property.Name, value);
}

但你最好使用像Pablo和Furqan这样的服务参考来说明你的对象的清晰模式。因为它会自动序列化你的对象，所以你不必担心序列化的东西。抱歉我的英文：p

从Web服务获取自定义类

3 个答案: