动态构建WebService时出现异常
用的是网上很多人说的方法:/// <summary>
/// 根据指定的信息,调用远程WebService方法
/// </summary>
/// <param name="url">WebService的http形式的地址</param>
/// <param name="namespace">欲调用的WebService的命名空间</param>
/// <param name="classname">欲调用的WebService的类名(不包括命名空间前缀)</param>
/// <param name="methodname">欲调用的WebService的方法名</param>
/// <param name="args">参数列表</param>
/// <returns>WebService的执行结果</returns>
/// <remarks>
/// 如果调用失败,将会抛出Exception。请调用的时候,适当截获异常。
/// 异常信息可能会发生在两个地方:
/// 1、动态构造WebService的时候,CompileAssembly失败。
/// 2、WebService本身执行失败。
/// </remarks>
/// <example>
/// <code>
/// object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx","Genersoft.Platform.Service.Workflow","Common","GetToolType",new object[]{"1"});
/// </code>
/// </example>
public static object InvokeWebservice(string url, string @namespace, string classname, string methodname, object[] args)
{
System.Net.WebClient wc = new System.Net.WebClient();
System.IO.Stream stream = wc.OpenRead(url + "?WSDL");
System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);
System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);
System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();
System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.CompilerParameters();
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");
System.CodeDom.Compiler.CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
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());
}
System.Reflection.Assembly assembly = cr.CompiledAssembly;
//在构建一个java写的WebService下面这行抛出了异常
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
System.Reflection.MethodInfo mi = t.GetMethod(methodname);
return mi.Invoke(obj, args);
}
异常信息为:未能从程序集“rppj7ib3, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null”中加载类型“Account”。
各位看看最可能什么地方出错了?谢了先 --------------------编程问答-------------------- 自己顶一下,怎么没人关注咧 --------------------编程问答--------------------
补充:.NET技术 , Web Services