C#动态调用WebService 时报错误对方的web服务是java 写的

2014-10-11 09:56:33 237 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

LabVIEW调用Webservice接口的3个常见坑及解决方案（附错误1172排查指南）本文深入剖析了LabVIEW调用Webservice接口时常见的三大难题：簇数据结构映射错乱、动态库引用冲突以及经典的网络错误1172。针对每个问题，文章提供了从原理分析到具体排查步骤的实战解决方案，并分享了构建稳定、可维护客户端的最佳实践，帮助开发者实现从“能用”到“稳定”的进阶。阅读详情

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);
ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
CodeNamespace cn = new CodeNamespace(@namespace);
//生成客户端代理类代码
CodeCompileUnit ccu = new CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
CSharpCodeProvider icc = new CSharpCodeProvider();
//设定编译参数
CompilerParameters cplist = new 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");
//编译代理类
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());
}
//生成代理实例，并调用方法
System.Reflection.Assembly assembly = cr.CompiledAssembly;
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);

}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}

报错位置是标红位置。
下面是错误信息
异常:已引发: "缺少元素“http://hyws.qfkj.com/:GetSectionInfo”。" (System.InvalidOperationException)
引发了一个 System.InvalidOperationException: "缺少元素“http://hyws.qfkj.com/:GetSectionInfo”。"
时间: 2014/10/11 9:46:52
线程: <无名称>[21888]

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