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  • C#动态调用WebServices

      

    using Microsoft.CSharp;
    using System;
    using System.CodeDom;
    using System.CodeDom.Compiler;
    using System.Collections.Generic;
    using System.IO;
    using System.Linq;
    using System.Net;
    using System.Web;
    using System.Web.Services.Description;

    /// <summary>
    /// WebServiceHelper 的摘要说明
    /// </summary>
    public class WebServiceHelper
    {
    public WebServiceHelper()
    {
    //
    // TODO: 在此处添加构造函数逻辑
    //
    }
    #region 动态调用WebService动态调用地址
    /// < summary>
    /// 动态调用web服务
    /// < /summary>
    /// < param name="url">WSDL服务地址< /param>
    /// < param name="methodname">方法名< /param>
    /// < param name="args">参数< /param>
    /// < returns>< /returns>
    public static object InvokeWebService(string url, string methodname, object[] args)
    {
    return WebServiceHelper.InvokeWebService(url, null, methodname, args);
    }
    /// <summary>
    /// 动态调用web服务
    /// </summary>
    /// <param name="url">WSDL服务地址</param>
    /// <param name="classname">服务接口类名</param>
    /// <param name="methodname">方法名</param>
    /// <param name="args">参数值</param>
    /// <returns></returns>
    public static object InvokeWebService(string url, string classname, string methodname, object[]args)
    {

    string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
    if ((classname == null) || (classname == ""))
    {
    classname = WebServiceHelper.GetWsClassName(url);
    }
    try
    {

    //获取WSDL
    WebClient wc = new WebClient();
    Stream stream = wc.OpenRead(url + "?WSDL");
    ServiceDescription sd = ServiceDescription.Read(stream);
    //注意classname一定要赋值获取
    classname = sd.Services[0].Name;

    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));
    // return "Error:WebService调用错误!" + ex.Message;
    }
    }
    private static string GetWsClassName(string wsUrl)
    {
    string[] parts = wsUrl.Split('/');
    string[] pps = parts[parts.Length - 1].Split('.');
    return pps[0];
    }
    #endregion
    }

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  • 原文地址:https://www.cnblogs.com/zhurunlai/p/7552127.html
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