Web调用封装【已使用测试，没问题】

1.添加引用System.Web.Services和System.Web

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


namespace JHOIS.FormTemplateBLL
{
    public static class WebServiceHelper
    {
        /// <summary>
        /// 存放程序集
        /// </summary>
        static Dictionary<string, MethodInfo> methodInfoDictionary = new Dictionary<string, MethodInfo>();
        static Dictionary<string, object> objectDictionary = new Dictionary<string, object>();

        /// <summary>
        /// WebService接口返回数据
        /// </summary>
        /// <param name="url">服务地址</param>
        /// <param name="methodName">服务方法名</param>
        /// <param name="XmlParams">参数</param>
        /// <returns></returns>
        public static string InvokeWebServiceByJsonXml(string url, string methodName, object[] XmlParams)
        {
            try
            {
                string logMsg = string.Format("Invoke Method：url={0},methodName={1}", url, methodName);
                if (XmlParams != null && XmlParams.Length >= 2)
                {
                    logMsg = string.Format(",XmlParams={0}", XmlParams[0] + Environment.NewLine + XmlParams[1]);
                }
                LogsWriteTxt(logMsg);
                object obj = null;
                MethodInfo GetDatall = null;
                var result = InvokeWebServiceByObject(url, methodName, out obj, out GetDatall);
                LogsWriteTxt($"服务是否调通：{result.ToString()}");
                LogsWriteTxt($"调用服务返回obj：{obj.ToString()}");
                object ResObj = GetDatall.Invoke(obj, XmlParams);
                LogsWriteTxt($"调用服务返回结果：{ResObj.ToString()}");
                string xml = ResObj.ToString();
                LogsWriteTxt(string.Format("Invoke Method：Result={0}{1}", Environment.NewLine, xml));
                return xml;
            }
            catch (Exception ex)
            {
                LogsWriteTxt($"调用服务Error：{ex.ToString()}");
                return "";
            }
        }
        /// <summary>
        /// WebService接口返回数据
        /// </summary>
        /// <param name="url">服务地址</param>
        /// <param name="methodName">服务方法名</param>
        /// <param name="jsonParam">参数为Json</param>
        /// <returns></returns>
        public static string InvokeWebServiceByJson(string url, string methodName, string jsonParam)
        {
            try
            {
                string logMsg = string.Format("Invoke Method：url={0},methodName={1}", url, methodName);
                LogsWriteTxt(logMsg);
                object obj = null;
                MethodInfo GetDatall = null;
                var result = InvokeWebServiceByObject(url, methodName, out obj, out GetDatall);
                LogsWriteTxt($"服务是否调通：{result.ToString()}");
                LogsWriteTxt($"调用服务返回obj：{obj.ToString()}");
                object ResObj = GetDatall.Invoke(obj, new object[] { jsonParam });
                LogsWriteTxt($"调用服务返回结果：{ResObj.ToString()}");
                string getResult = ResObj.ToString();
                LogsWriteTxt(string.Format("Invoke Method：Result={0}{1}", Environment.NewLine, getResult));
                return getResult;
            }
            catch (Exception ex)
            {
                LogsWriteTxt($"调用服务Error：{ex.ToString()}");
                return "";
            }
        }
        /// <summary>
        /// 实例化WebServices
        /// </summary>
        /// <param name="url">WebServices地址</param>
        /// <param name="methodname">调用的方法</param>
        /// <param name="args">把webservices里需要的参数按顺序放到这个object[]里</param>
        public static object InvokeWebService(string url, string methodname, string nameSpace, object[] args)
        {
            //这里的namespace是需引用的webservices的命名空间，我没有改过，也可以使用。也可以加一个参数从外面传进来。
            string @namespace = nameSpace;

            try
            {
                //获取WSDL
                WebClient wc = new WebClient();
                if (!url.EndsWith("?WSDL") && !url.EndsWith("?wsdl"))
                    url = string.Format("{0}?WSDL", url);
                Stream stream = wc.OpenRead(url);
                ServiceDescription sd = ServiceDescription.Read(stream);
                string classname = sd.Services[0].Name;
                ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
                sdi.ProtocolName = "Soap"; // 指定访问协议。
                sdi.Style = ServiceDescriptionImportStyle.Client; // 生成客户端代理。
                sdi.AddServiceDescription(sd, null, null);
                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 csc = new CSharpCodeProvider();
                //ICodeCompiler icc = csc.CreateCompiler();

                //设定编译参数
                CompilerParameters cplist = new CompilerParameters();
                cplist.GenerateExecutable = false;//动态编译后的程序集不生成可执行文件
                cplist.GenerateInMemory = true;//动态编译后的程序集只存在于内存中，不在硬盘的文件上
                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 = csc.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);

                //注：method.Invoke(o, null)返回的是一个Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o, null)转一下就行了,method.Invoke(0,null)这里的null可以传调用方法需要的参数,string[]形式的
                return mi.Invoke(obj, args);
            }
            catch (Exception ex)
            {
                //  LogHelper.Error("WS_Helper出现错误", ex);
                return null;
            }
        }

        /// <summary>
        /// 动态调用Webservices
        /// </summary>
        /// <param name="methodName">要调用的方法名称</param>
        /// <param name="url">服务地址</param>
        /// <returns></returns>
        public static bool InvokeWebServiceByObject(string url, string methodName, out object obj, out MethodInfo GetDatall)
        {
            obj = null;
            GetDatall = null;
            try
            {
                if (!methodInfoDictionary.TryGetValue(methodName, out GetDatall) || !objectDictionary.TryGetValue(methodName, out obj))
                {
                    url = url + "?WSDL";
                    //客户端代理服务命名空间，可以设置成需要的值。
                    string ns = string.Format("ProxyServiceReference");
                    //获取WSDL
                    WebClient wc = new WebClient();
                    LogsWriteTxt($"服务地址：{url}");
                    Stream stream = wc.OpenRead(url);
                    ServiceDescription sd = ServiceDescription.Read(stream);//服务的描述信息都可以通过ServiceDescription获取
                    string classname = sd.Services[0].Name;
                    ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
                    sdi.AddServiceDescription(sd, "", "");
                    CodeNamespace cn = new CodeNamespace(ns);

                    //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();
                    //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 = csc.CompileAssemblyFromDom(cplist, ccu);
                    if (cr.Errors.HasErrors == true)
                    {
                        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
                    Assembly assembly = cr.CompiledAssembly;
                    Type t = assembly.GetType(ns + "." + classname, true, true);
                    GetDatall = t.GetMethod(methodName);
                    obj = Activator.CreateInstance(t);

                    methodInfoDictionary.Add(methodName, GetDatall);
                    objectDictionary.Add(methodName, obj);
                }
            }
            catch (Exception ex)
            {
                LogsWriteTxt($"动态调用Webservices失败，原因：{ex.ToString()}");
                return false;
            }
            return true;
        }

        /// <summary>
        /// 写日志（日志文件位置与主程序exe位置相同）
        /// </summary>
        /// <param name="strText">日志内容</param>
        /// <param name="strFileName">日志文件名称</param>
        private static void LogsWriteTxt(string strText, string strFileName = null)
        {
            try
            {
                if (strFileName == null || strFileName.Trim() == string.Empty)
                {
                    strFileName = "Log" + DateTime.Now.ToString("yyyyMMdd") + ".txt";
                }
                string getpath = AppDomain.CurrentDomain.BaseDirectory;
                if (Directory.Exists(getpath + "/手术状态回传日志") == false)
                {
                    Directory.CreateDirectory(getpath + "/手术状态回传日志");
                }
                string strFilePath = AppDomain.CurrentDomain.BaseDirectory + "手术状态回传日志\" + strFileName;
                System.IO.StreamWriter sw = new System.IO.StreamWriter(strFilePath, true, System.Text.Encoding.Default);
                sw.WriteLine(strText);
                sw.Close();
            }
            catch (Exception)
            {
            }
        }
    }
}