• 动态调用WebService服务


    方法一:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.IO;
    using System.Web.Services.Description;
    using Microsoft.CSharp;
    using System.CodeDom.Compiler;
    using System.CodeDom;
    using System.Net;
    
    namespace WebServiceClient
    {
        public class WebServiceHelper
        {
            /// <summary>  
            /// 动态调用WebService  
            /// </summary>  
            /// <param name="url">WebService地址</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>  
            /// <returns>object</returns> 
            public static object InvokeWebService(string url, string classname, string methodname, object[] args)
            {
                string @namespace = "ServiceBase.WebService.DynamicWebLoad";
                if (classname == null || classname == "")
                {
                    classname = WebServiceHelper.GetClassName(url);
                }
                //获取服务描述语言(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 csc = new CSharpCodeProvider();
                ICodeCompiler icc = csc.CreateCompiler();
                //设定编译器的参数  
                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 StringBuilder();
                    foreach (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);
            }
            private static string GetClassName(string url)
            {
                string[] parts = url.Split('/');
                string[] pps = parts[parts.Length - 1].Split('.');
                return pps[0];
            }
        }
    }

    调用接口

                string surl = "http://localhost:41765/WebServiceDemo.asmx";
                string sclass = "";
                string sname = "TestWithParam";
                object[] args = { "动态调用WebService" };
    
                this.txtinfo.Text = WebServiceHelper.InvokeWebService(surl, sclass, sname, args).ToString();

    方法二:

    using System;
    using System.CodeDom;
    using System.CodeDom.Compiler;
    using System.IO;
    using System.Net;
    using System.Text;
    using System.Web;
    using System.Web.Caching;
    using System.Web.Services.Description;
    using System.Xml.Serialization;
    
    namespace WebServiceClient
    {
        public class WebServiceHelper0
        {
    
            /// <summary>
            /// 生成dll文件保存到本地
            /// </summary>
            /// <param name="url">WebService地址</param>
            /// <param name="className">类名</param>
            /// <param name="methodName">方法名</param>
            /// <param name="filePath">保存dll文件的路径</param>
            public static void CreateWebServiceDLL(string url, string className, string methodName, string filePath)
            {
                // 1. 使用 WebClient 下载 WSDL 信息。
                WebClient web = new WebClient();
                Stream stream = web.OpenRead(url + "?WSDL");
                // 2. 创建和格式化 WSDL 文档。
                ServiceDescription description = ServiceDescription.Read(stream);
                //如果不存在就创建file文件夹
                if (Directory.Exists(filePath) == false)
                {
                    Directory.CreateDirectory(filePath);
                }
                if (File.Exists(filePath + className + "_" + methodName + ".dll"))
                {
                    //判断缓存是否过期
                    var cachevalue = HttpRuntime.Cache.Get(className + "_" + methodName);
                    if (cachevalue == null)
                    {
                        //缓存过期删除dll
                        File.Delete(filePath + className + "_" + methodName + ".dll");
                    }
                    else
                    {
                        // 如果缓存没有过期直接返回
                        return;
                    }
                }
                // 3. 创建客户端代理代理类。
                ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
                // 指定访问协议。
                importer.ProtocolName = "Soap";
                // 生成客户端代理。
                importer.Style = ServiceDescriptionImportStyle.Client;
                importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync;
                // 添加 WSDL 文档。
                importer.AddServiceDescription(description, null, null);
                // 4. 使用 CodeDom 编译客户端代理类。
                // 为代理类添加命名空间,缺省为全局空间。
                CodeNamespace nmspace = new CodeNamespace();
                CodeCompileUnit unit = new CodeCompileUnit();
                unit.Namespaces.Add(nmspace);
                ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit);
                CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
                CompilerParameters parameter = new CompilerParameters();
                parameter.GenerateExecutable = false;
                // 可以指定你所需的任何文件名。
                parameter.OutputAssembly = filePath + className + "_" + methodName + ".dll";
                parameter.ReferencedAssemblies.Add("System.dll");
                parameter.ReferencedAssemblies.Add("System.XML.dll");
                parameter.ReferencedAssemblies.Add("System.Web.Services.dll");
                parameter.ReferencedAssemblies.Add("System.Data.dll");
                // 生成dll文件,并会把WebService信息写入到dll里面
                CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);
                if (result.Errors.HasErrors)
                {
                    // 显示编译错误信息
                    System.Text.StringBuilder sb = new StringBuilder();
                    foreach (CompilerError ce in result.Errors)
                    {
                        sb.Append(ce.ToString());
                        sb.Append(System.Environment.NewLine);
                    }
                    throw new Exception(sb.ToString());
                }
                //记录缓存
                var objCache = HttpRuntime.Cache;
                // 缓存信息写入dll文件
                objCache.Insert(className + "_" + methodName, "1", null, DateTime.Now.AddMinutes(5), TimeSpan.Zero, CacheItemPriority.High, null);
            }
        }
    
    }

    接口调用

    配置文件

    <?xml version="1.0" encoding="utf-8" ?>
    <configuration>
      <appSettings>
        <!--WebService地址-->
        <add key="WebServiceAddress" value="http://localhost:41765/WebServiceDemo.asmx"/>
        <!--WebService提供的类名-->
        <add key="ClassName" value="WebServiceDemo"/>
        <!--WebService方法名-->
        <add key="MethodName" value="TestWithParam"/>
        <!--存放dll文件的地址-->
        <add key="FilePath" value="D:\测试Demo\WebService"/>
      </appSettings>
    </configuration>
                // 读取配置文件,获取配置信息
                string url = ConfigurationManager.AppSettings["WebServiceAddress"];
                string className = ConfigurationManager.AppSettings["ClassName"];
                string methodName = ConfigurationManager.AppSettings["MethodName"];
                string filePath = ConfigurationManager.AppSettings["FilePath"];
                // 调用WebServiceHelper
                WebServiceHelper0.CreateWebServiceDLL(url, className, methodName, filePath);
                // 读取dll内容
                byte[] filedata = File.ReadAllBytes(filePath + className + "_" + methodName + ".dll");
                // 加载程序集信息
                Assembly asm = Assembly.Load(filedata);
                Type t = asm.GetType(className);
                // 创建实例
                object o = Activator.CreateInstance(t);
                MethodInfo method = t.GetMethod(methodName);
                // 参数
                object[] args = { "动态调用WebService" };
                // 调用访问,获取方法返回值
                string value = method.Invoke(o, args).ToString();
                //输出返回值
                MessageBox.Show($"返回值:{value}");

    demo下载地址:https://quqi.gblhgk.com/s/3942311/uB6laF2mD7PgrqYF

  • 相关阅读:
    hdu1716排列2(stl:next_permutation+优先队列)
    iOS UIWebView 载入https 网站出现NSURLConnection/CFURLConnection HTTP load failed (kCFStreamErrorDomainSSL,
    C++学习笔记23,类内函数重载
    Java---16---多线程---死锁
    Ubuntu上的Hadoop安装教程
    SAP BAPI一览 史上最全
    python脚本从excel表到处数据,生成指定格式的文件
    hdu 4865 Peter&#39;s Hobby
    【VUE】100. vue踩坑集锦
    【VUE】2.搭建vue脚手架@vue/cli,新建第一个vue项目
  • 原文地址:https://www.cnblogs.com/leebokeyuan/p/13920363.html
Copyright © 2020-2023  润新知