在网上看了一个动态调用 WebService的代理类，试了试，不知道为什么，调用其他webserver都不行，只有调用这个实例上的一个地址(http://www.webservicex.net/globalweather.asmx)才行,我调用其他地址都不行，然后自己弄了一个简单webserver也还是不行，执行到
Type t = assembly.GetType(@namespace + "." + classname, true, true); //类类型
就不行了，错误提示为
{"未能从程序集“sta-qnph, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null”中加载类型“Service”。":"Service"}
[System.TypeLoadException]: {"未能从程序集“sta-qnph, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null”中加载类型“Service”。":"Service"}
Data: {System.Collections.ListDictionaryInternal}
HelpLink: null
InnerException: null
Message: "未能从程序集“sta-qnph, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null”中加载类型“Service”。"
Source: "mscorlib"
StackTrace: " 在 System.Reflection.Assembly._GetType(String name, Boolean throwOnError, Boolean ignoreCase)\r\n 在 System.Reflection.Assembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase)\r\n 在 WebServiceHelper.InvokeWebService(String url, String classname, String methodname, Object[] args) 位置 e:\\WWW\\New\\Index\\App_Code\\WebServiceHelper.cs:行号 97"
TargetSite: {System.Type _GetType(System.String, Boolean, Boolean)}
调用
string url = "http://www.webservicex.net/globalweather.asmx" ;
string[] args = new string[2] ;
args[0] = "ShangHai";
args[1] = "China" ;
object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;
Response.Write(result.ToString());
public static object InvokeWebService(string url, string methodname, object[] args)
{
return InvokeWebService(url, null, methodname, args);
}
public static object InvokeWebService(string url, string classname, string methodname, object[] args)
{
string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
if ((classname == null) || (classname == ""))
{
classname = GetWsClassName(url);
}
try
{
//获取WSDL
WebClient wc = new WebClient();
Stream stream = wc.OpenRead(url + "?WSDL");
ServiceDescription sd = ServiceDescription.Read(stream); //xml web services 类实例
ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
CodeNamespace cn = new CodeNamespace(@namespace); //命名空间类实例
//生成客户端代理类代码
CodeCompileUnit ccu = new CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
CSharpCodeProvider csc = new CSharpCodeProvider(); //C#代码编译器和代码生成器类实例
ICodeCompiler icc = csc.CreateCompiler();
//设定编译参数
CompilerParameters cplist = new CompilerParameters(); //编译器参数类实例
cplist.GenerateExecutable = false;
cplist.GenerateInMemory = true;
cplist.ReferencedAssemblies.Add("System.dll");
cplist.ReferencedAssemblies.Add("System.XML.dll");
cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
cplist.ReferencedAssemblies.Add("System.Data.dll");
//编译代理类
CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu); //编译器结果
if (true == cr.Errors.HasErrors)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
{
sb.Append(ce.ToString());
sb.Append(System.Environment.NewLine);
}
throw new Exception(sb.ToString());
}
//生成代理实例，并调用方法
System.Reflection.Assembly assembly = cr.CompiledAssembly; //经过编译了的程序集类
Type t = assembly.GetType(@namespace + "." + classname, true, true); //类类型
object obj = Activator.CreateInstance(t);
System.Reflection.MethodInfo mi = t.GetMethod(methodname); //方法类型
return mi.Invoke(obj, args);
}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}
}
private static string GetWsClassName(string wsUrl)
{
string[] parts = wsUrl.Split('/');
string[] pps = parts[parts.Length - 1].Split('.');
return pps[0];
}
