動態調用WebService以及傳遞複雜物件

1.動態調用WebService?
解決方案：添加動態調用WebService類WebServiceHelper；代碼如下：

using System.Collections.Generic;using System.Web;using System.Net;using System.Web.Services.Description;using System.Text;using System.IO;using System.CodeDom;using Microsoft.CSharp;using System.CodeDom.Compiler;/// <summary>///WebServiceHelper 的摘要說明/// </summary>public class WebServiceHelper{     public WebServiceHelper()     {         //         //TODO: 在此處添加建構函式邏輯         //     }    #region InvokeWebService    //動態調用web服務    public static object InvokeWebService(string url, string methodname, object[] args)    {        return WebServiceHelper.InvokeWebService(url, null, methodname, args);    }     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        {            //擷取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);             //產生用戶端代理類代碼            CodeCompileUnit ccu = new CodeCompileUnit();            ccu.Namespaces.Add(cn);            sdi.Import(cn, ccu);            CSharpCodeProvider csc = new CSharpCodeProvider();            ICodeCompiler icc = csc.CreateCompiler();             //設定編譯參數            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");             //編譯代理類            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());            }             //組建代理程式執行個體，並調用方法            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));        }    }     private static string GetWsClassName(string wsUrl)    {        string[] parts = wsUrl.Split('/');        string[] pps = parts[parts.Length - 1].Split('.');         return pps[0];    }    #endregion}

 

 

 

2.調用WebService時，傳入參數為Entity[]（即實體集合等複雜物件），如何傳入以及接收參數？

解決方案：第一步序列化對象

 

        XmlSerializer xs = new XmlSerializer(typeof(Entity[]));        MemoryStream mstream = new MemoryStream();        XmlTextWriter writer = new XmlTextWriter(mstream, Encoding.Default);        xs.Serialize(mstream, en);        writer.Close();        string str = Encoding.UTF8.GetString(mstream.ToArray());        #endregion        #region 寫入檔案再讀取出字串        //FileStream fs = new FileStream("c:\\aaa.txt", FileMode.OpenOrCreate);        //xs = new XmlSerializer(typeof(Entity[]));        //xs.Serialize(fs, en);        //fs.Close();         //fs = new FileStream("c:\\aaa.txt", FileMode.Open, FileAccess.Read);        //StreamReader reader = new StreamReader(fs, Encoding.Default);        //str = reader.ReadToEnd();        //reader.Close();        //reader.Dispose();        //fs.Close();        //fs.Dispose();        #endregion

 

第二步：動態調用WebService

 

代碼 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->string url = "http://localhost:4494/SMWebService/WebService_S.asmx";        object[] args = new object[2];        args[0] = mapname;        args[1] = str;        object result = WebServiceHelper.InvokeWebService(url, "AddEntity", args);

 

第三步：WebService中的處理過程（還原序列化）

 

 [WebMethod]    public bool AddEntity(string mapname,string strentites)    {Stream stream = new MemoryStream(ASCIIEncoding.Default.GetBytes(strentites));         XmlSerializer xml = new XmlSerializer(typeof(Entity[]));            Entity[] entities = (Entity[])xml.Deserialize(stream);}