.NET(C#)调用webserver接口

时间: 2023-08-15 admin 互联网

.NET(C#)调用webserver接口

.NET(C#)调用webserver接口

.net调用webservice有两种方式

1、直接添加web引用。.net平台会生成一些适配。

2、动态webservice。

下面讲解的是.net动态的调用webservice接口


1.构建WebServiceHelper类


class WebServiceHelper
    {
        /// < 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);
                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];
        }
    }

2.调用代码


        /// <param name="sonXml">XML报文</param>
        /// <returns></returns>
        public  dynamic GetResponseByWebService(string sonXml)
        {
            //WebService返回值
            string responseData = null;
            DataSet ds = new DataSet();
            //报文编码
            Encoding encoding = Encoding.GetEncoding("UTF-8");
            try
            {
                //WebService开放的接口  
                string url = "http://xxxxx/service/CenterToDataSrv?wsdl";
               
                //方法名称
                string MethodName = "JsCenterSrv";
                //设置WebService参数
                //参数集合
                object[] str = { sonXml.ToString() };
                //调用WebService
                responseData = WebServiceHelper.InvokeWebService(url, MethodName, str).ToString();

                if (responseData != null)
                {
                    //将返回报文解析到DataSet
                    MemoryStream ms = new MemoryStream(encoding.GetBytes(responseData));
                    ds.ReadXml(ms);

                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return ds;
        }