C# 动态生成WebService 的引用

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Data;
using System.Net;
using System.IO;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Reflection;
using System.Web.Services.Description;
using System.Xml.Serialization;

public class WebServiceHelper
{
    private string ClassName = "TIPMService";
    private string NameSapceName = "TIPMService";
    private string URL = "http://192.168.1.175:8080/TIPM/services/TIPMService?WSDL";

    public Boolean InitWebServiceConn(string url)
    {

        if (url == "")
            return false;

        ClassName = this.GetClassName(url);
        if (ClassName == null)
            return false;

        URL = url;//这个地址可以写在Config文件里面，这里取出来就行了.在原地址后面加上： ?WSDL
        try
        {
            WebClient client = new WebClient();
            Stream stream = client.OpenRead(url);
            ServiceDescription description = ServiceDescription.Read(stream);
            ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类。
            importer.ProtocolName = "Soap"; //指定访问协议。
            importer.Style = ServiceDescriptionImportStyle.Client; //生成客户端代理。
            importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync;
            importer.AddServiceDescription(description, null, null); //添加WSDL文档。

            CodeNamespace nmspace = new CodeNamespace(); //命名空间
            nmspace.Name = NameSapceName;
            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;
            //parameter.OutputAssembly = "..\\..\\TIPMService.dll";//输出程序集的名称
            parameter.OutputAssembly = "TIPMWebServiceRef.dll";//输出程序集的名称
            parameter.ReferencedAssemblies.Add("System.dll");
            parameter.ReferencedAssemblies.Add("System.XML.dll");
            parameter.ReferencedAssemblies.Add("System.Web.Services.dll");
            parameter.ReferencedAssemblies.Add("System.Data.dll");

            CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);
            if (result.Errors.HasErrors)
            {
                // 显示编译错误信息
                return false;
            }

            //根据WebService地址，模似生成一个代理类,，默认保存在bin目录下面
            //TextWriter writer = File.CreateText("..\\..\\TIPMWebServiceRef.cs");
            TextWriter writer = File.CreateText("TIPMWebServiceRef.cs");
            provider.GenerateCodeFromCompileUnit(unit, writer, null);
            writer.Flush();
            writer.Close();
            return true;
        }
        catch (Exception ex)
        {
            return false;
        }

    }

    public void Test()
    {
        //TIPMService.TIPMService tipm = new TIPMService.TIPMService();
        //string url = tipm.Url;
        //TIPMService.routeUser user = tipm.GetUserRegInfo("0011", "");
        //Assembly asm = Assembly.LoadFrom("TIPMService.dll");//加载前面生成的程序集
        //Type t = asm.GetType("TIPMService.TIPMService");
        //object o = Activator.CreateInstance(t);
        //MethodInfo method = t.GetMethod("TIPMService");//GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下
        //string str = (string)method.Invoke(o,null);
        //String[] item = (String[])method.Invoke(o, null);       
    }
        

    public void InvokeWebService(string url, string classname, string methodname, object[] args)
    {
        Assembly asm = Assembly.LoadFrom("TIPMService.dll");//加载前面生成的程序集
        Type t = asm.GetType("TIPMService.TIPMService");

        object o = Activator.CreateInstance(t);
        MethodInfo method = t.GetMethod("GetPersons");//GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下

        String[] item = (String[])method.Invoke(o, null);
        //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
        foreach (string str in item)
            Console.WriteLine(str);

        //上面是根据WebService地址，模似生成一个代理类,如果你想看看生成的代码文件是什么样子，可以用以下代码保存下来，默认是保存在bin目录下面

    }

    //假如URL为"http://192.168.1.175:8080/TIPM/services/TIPMService?WSDL"
    //最终的返回值为 TIPMService
    private string GetClassName(string url)
    {
        string[] parts = url.Split('/');
        string[] pps = parts[parts.Length - 1].Split('?');
        return pps[0];
    }

}