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.Reflection;
using System.Text;
using System.Web.Services.Description;
using System.Xml.Serialization;

namespace SunCreate.HaiKang8600WebService.Utils
{
    /// <summary>
    /// 动态调用WebService
    /// </summary>
    public static class WebServiceHelper
    {
        /// <summary>
        /// 动态调用WebService
        /// </summary>
        /// <param name="url">WebService地址</param>
        /// <param name="strNamespace">命名空间</param>
        /// <param name="className">类名</param>
        /// <param name="methodName">方法名(模块名)</param>
        /// <param name="args">参数列表</param>
        public static object InvokeWebService(string url, string strNamespace, string className, string methodName, object[] args)
        {
            try
            {
                WebClient webClient = new WebClient();
                Stream stream = webClient.OpenRead(url); //获取服务描述语言(WSDL)

                ServiceDescription serviceDescription = ServiceDescription.Read(stream); //通过直接从 Stream实例加载 XML 来初始化ServiceDescription类的实例。
                ServiceDescriptionImporter serviceDescriptionImporter = new ServiceDescriptionImporter();
                serviceDescriptionImporter.AddServiceDescription(serviceDescription, null, null);

                //生成客户端代理类代码
                CodeNamespace codeNamespace = new CodeNamespace(strNamespace);  //CodeNamespace表示命名空间声明。
                CodeCompileUnit codeCompileUnit = new CodeCompileUnit();
                codeCompileUnit.Namespaces.Add(codeNamespace);
                serviceDescriptionImporter.Import(codeNamespace, codeCompileUnit);

                CSharpCodeProvider csharpCodeProvider = new CSharpCodeProvider();
                ICodeCompiler iCodeCompiler = csharpCodeProvider.CreateCompiler();//取得C#程式码编译器的执行个体

                //设定编译器的参数
                CompilerParameters compilerParameters = new CompilerParameters();//创建编译器的参数实例
                compilerParameters.GenerateExecutable = false;
                compilerParameters.GenerateInMemory = true;
                compilerParameters.ReferencedAssemblies.Add("System.dll");
                compilerParameters.ReferencedAssemblies.Add("System.XML.dll");
                compilerParameters.ReferencedAssemblies.Add("System.Web.Services.dll");
                compilerParameters.ReferencedAssemblies.Add("System.Data.dll");

                //编译代理类
                CompilerResults compilerResults = iCodeCompiler.CompileAssemblyFromDom(compilerParameters, codeCompileUnit);
                if (true == compilerResults.Errors.HasErrors)
                {
                    StringBuilder sb = new StringBuilder();
                    foreach (CompilerError ce in compilerResults.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 = compilerResults.CompiledAssembly;
                Type type = assembly.GetType(strNamespace + "." + className, true, true);
                object obj = Activator.CreateInstance(type);
                System.Reflection.MethodInfo methodInfo = type.GetMethod(methodName); //MethodInfo 的实例可以通过调用GetMethods或者Type对象或派生自Type的对象的GetMethod方法来获取，还可以通过调用表示泛型方法定义的 MethodInfo 的MakeGenericMethod方法来获取。
                return methodInfo.Invoke(obj, args);
            }
            catch (Exception ex)
            {
                LogUtil.LogError(ex, "动态调用WebService 错误");
                return null;
            }
        }

    }
}

string url = "http://172.16.36.26:8080/attachment/services/AttachmentService?wsdl";
object[] args = new object[2];
args[0] = "1";
args[1] = "1";
object str = WebServiceHelper.InvokeWebService(url, "service.webservice", "AttachmentService", "checkGrade", args);
string sstr = str.ToString();