c#动态web服务调用返回自定义类
我有一个类,它提供对web服务的动态调用c#动态web服务调用返回自定义类,c#,web-services,reflection,types,C#,Web Services,Reflection,Types,我有一个类,它提供对web服务的动态调用 private System.Xml.XmlTextReader _XmlReader; private System.Web.Services.Description.ServiceDescription _ServiceDescription; private System.Web.Services.Description.ServiceDescriptionImporter _DescriptionImporter; private System.
private System.Xml.XmlTextReader _XmlReader;
private System.Web.Services.Description.ServiceDescription _ServiceDescription;
private System.Web.Services.Description.ServiceDescriptionImporter _DescriptionImporter;
private System.CodeDom.CodeNamespace _CodeNamespace;
private System.CodeDom.CodeCompileUnit _CodeUnit;
private System.Web.Services.Description.ServiceDescriptionImportWarnings _ImportWarnings;
private System.CodeDom.Compiler.CodeDomProvider _Compiler;
private System.CodeDom.Compiler.CompilerParameters _Parameters;
private System.CodeDom.Compiler.CompilerResults _Results;
private System.Reflection.Assembly _WebServiceAssembly;
private string _Url;
public WebServiceInvoker(string url)
{
_Url = url;
System.Net.ServicePoint servicePoint = System.Net.ServicePointManager.FindServicePoint(new Uri(_Url));
servicePoint.Expect100Continue = false;
_XmlReader = new System.Xml.XmlTextReader(_Url);
_ServiceDescription = System.Web.Services.Description.ServiceDescription.Read(_XmlReader);
_DescriptionImporter = new System.Web.Services.Description.ServiceDescriptionImporter();
_DescriptionImporter.ProtocolName = "Soap";
_DescriptionImporter.AddServiceDescription(_ServiceDescription, null, null);
_DescriptionImporter.Style = System.Web.Services.Description.ServiceDescriptionImportStyle.Client;
_DescriptionImporter.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties;
_CodeNamespace = new System.CodeDom.CodeNamespace();
_CodeUnit = new System.CodeDom.CodeCompileUnit();
_CodeUnit.Namespaces.Add(_CodeNamespace);
_ImportWarnings = _DescriptionImporter.Import(_CodeNamespace, _CodeUnit);
if (_ImportWarnings != 0) throw new Exception("Can not resolve registration service.");
_Compiler = System.CodeDom.Compiler.CodeDomProvider.CreateProvider("CSharp");
string[] references = new string[] { "System.Web.Services.dll", "System.Xml.dll" };
_Parameters = new System.CodeDom.Compiler.CompilerParameters(references);
_Results = _Compiler.CompileAssemblyFromDom(_Parameters, _CodeUnit);
foreach (System.CodeDom.Compiler.CompilerError oops in _Results.Errors) { throw new Exception("Compile Error Creating Assembly"); }
_WebServiceAssembly = _Results.CompiledAssembly;
}
public LYSProducts.ProductObject GetProduct(string productCode)
{
LYSProducts.ProductObject p;
object obj = _WebServiceAssembly.CreateInstance("RegisteryService");
Type typ = obj.GetType();
p = (LYSProducts.ProductObject)typ.InvokeMember("GetProduct", System.Reflection.BindingFlags.InvokeMethod, null, obj, new object[] { productCode });
return p;
}
GetProduct方法返回一个自定义类
namespace LYSProducts
{
[Serializable()]
class ProductObject
{
public string ProductCode
{
get { return _ProductCode; }
set { _ProductCode = value; }
}
public string ProductName
{
get { return _ProductName; }
set { _ProductName = value; }
}
public string MajorVer
{
get { return _MajorVer; }
set { _MajorVer = value; }
}
public string MinorVer
{
get { return _MinorVer; }
set { _MinorVer = value; }
}
private string _ProductCode;
private string _ProductName;
private string _MajorVer;
private string _MinorVer;
public ProductObject(string productCode, string productName)
{
_ProductCode = productCode;
_ProductName = productName;
_MajorVer = "";
_MinorVer = "";
}
public ProductObject(string productCode, string productName, string majorVer, string minorVer)
{
_ProductCode = productCode;
_ProductName = productName;
_MajorVer = majorVer;
_MinorVer = minorVer;
}
}
}
代码运行良好。但是“typ.InvokeMember”方法返回了一个对象,我不知道如何将它转换为LYSProducts.ProdutcObject类。我在客户端部署了相同的类,但当我尝试强制转换时,收到“无法将'ProductObject'类型的对象转换为'LYSProducts.ProductObject'”错误。我知道服务必须为“ProductObject”类型提供一些模式,我可以使用反射从这些信息创建ProductObject,但我不知道怎么做 下面是我如何解决这个问题的。也许有人能从中得到一些帮助
public ServiceResponseBase GetProduct(string productCode)
{
object obj = _WebServiceAssembly.CreateInstance("RegisteryService");
Type typ = obj.GetType();
object o = typ.InvokeMember("GetProduct", System.Reflection.BindingFlags.InvokeMethod, null, obj, new object[] { productCode });
return InstantiateObject<ProductResponse>(o);
}
private T InstantiateObject<T>(object o) where T : class
{
Type t = o.GetType();
object r = Activator.CreateInstance(typeof(T));
foreach (System.Reflection.PropertyInfo p in t.GetProperties()) r.GetType().GetProperty(p.Name).SetValue(r, p.GetValue(o, null), null);
return (T)r;
}
公共服务响应数据库GetProduct(字符串productCode)
{
object obj=_WebServicesAssembly.CreateInstance(“RegisteryService”);
Type typ=obj.GetType();
对象o=typ.InvokeMember(“GetProduct”,System.Reflection.BindingFlags.InvokeMethod,null,obj,新对象[]{productCode});
返回实例化对象(o);
}
私有T实例化对象(对象o),其中T:class
{
类型t=o.GetType();
objectr=Activator.CreateInstance(typeof(T));
foreach(System.Reflection.PropertyInfo p in t.GetProperties())r.GetType().GetProperty(p.Name).SetValue(r,p.GetValue(o,null),null);
返回(T)r;
}
ProductResponse类派生自ServiceResponseBase。//
/// <summary>
/// Invokes the specified method of the named service.
/// </summary>
/// <by>J.BETTAIEB</by>
/// <typeparam name="T">The expected return type.</typeparam>
/// <param name="serviceName">The name of the service to use.</param>
/// <param name="methodName">The name of the method to call.</param>
/// <param name="args">The arguments to the method.</param>
/// <returns>The return value from the web service method.</returns>
public T InvokeMethod<T>( string serviceName, string methodName, params object[] args )
{
// create an instance of the specified service
// and invoke the method
object obj = this.webServiceAssembly.CreateInstance(serviceName);
Type type = obj.GetType();
return (T)type.InvokeMember(methodName, BindingFlags.InvokeMethod, null, obj, args);
}
///调用命名服务的指定方法。
///
///贝塔伊布
///预期的返回类型。
///要使用的服务的名称。
///要调用的方法的名称。
///方法的参数。
///web服务方法的返回值。
public T InvokeMethod(字符串serviceName、字符串methodName、参数对象[]args)
{
//创建指定服务的实例
//并调用该方法
object obj=this.webserviceCassembly.CreateInstance(serviceName);
Type Type=obj.GetType();
return(T)type.InvokeMember(methodName,BindingFlags.InvokeMethod,null,obj,args);
}
如果有人想让服务URL可配置,那么您不需要跳过这些障碍,只需创建您的服务、设置URL属性并调用您的方法即可。