动态调用WebService 的相关方法

来源：网络，不过修改了一个小地方，原来的

CSharpCodeProvider csc = new CSharpCodeProvider();

ICodeCompiler icc = csc.CreateCompiler();

会提示已经过时，

现在修改为 CodeDomProvider csc= CodeDomProvider.CreateProvider("CSharp");

调用：

string pcUrl = "http://localhost:8089/test.asmx";

string pcClassName = "";

string pcMethodName = "GetData";

object[] objs = new object[1];

objs[0] = "2013";

DataSet ds = DynamicWebServiceCall.InvokeWebService(pcUrl, pcClassName, pcMethodName, objs) as DataSet;

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

/// <summary>
/// 动态调用WebService 的相关方法
/// </summary>
public sealed class DynamicWebServiceCall
{
/// <summary>
/// 动态调用WebService 的方法
/// </summary>
/// <param name="pcUrl">WebService 的访问路径 http://localhost:8080/WebServiceTest.asmx </param>
/// <param name="pcClassName">要调用的类名</param>
/// <param name="pcMethodName">方法名</param>
/// <param name="args">方法参数</param>
/// <returns></returns>
public static object InvokeWebService(string pcUrl, string pcMethodName, object[] args)
{
return InvokeWebService(pcUrl, "", pcMethodName, args);
}
/// <summary>
/// 动态调用WebService 的方法
/// </summary>
/// <param name="pcUrl">WebService 的访问路径 http://localhost:8080/  或 http://localhost:8080/WebServiceTest.asmx </param>
/// <param name="pcClassName">要调用的类名，当Url里已经传动了类名的时候，这里设置为“”</param>
/// <param name="pcMethodName">方法名</param>
/// <param name="args">方法参数</param>
/// <returns></returns>
public static object InvokeWebService(string pcUrl, string pcClassName, string pcMethodName, object[] args)
{
object loRetVal = null;

try
{
if (!string.IsNullOrEmpty(pcClassName))
{
pcUrl += pcClassName;
}
else
{
pcClassName = GetWsClassName(pcUrl);
}

Assembly loAssemble = CreateDynWebServiceAssemble(pcUrl);
if (loAssemble != null)
{
string lcNameSpace = "Sonic.Web.WebService.DynamicWebService";
Type t = loAssemble.GetType(lcNameSpace + "." + pcClassName, true, true);
object obj = Activator.CreateInstance(t);
MethodInfo loMethodInfo = t.GetMethod(pcMethodName);
if (loMethodInfo != null)
loRetVal = loMethodInfo.Invoke(obj, args);
}
}
catch (Exception e)
{
loRetVal = null;
throw e;
}
return loRetVal;
}

/// <summary>
/// 动态创建WebService的Assembly
/// </summary>
/// <param name="pcUrl">WebService 的访问路径 入 http://localhost:8080/WebServiceTest.asmx</param> /// <returns></returns>
private static Assembly CreateDynWebServiceAssemble(string pcUrl)
{
Assembly loRetVal = null;
string lcNameSpace = "Sonic.Web.WebService.DynamicWebService";
try
{
//获取WSDL
WebClient loWC = new WebClient();
Stream stream = loWC.OpenRead(pcUrl + "?WSDL");

ServiceDescription sd = ServiceDescription.Read(stream);
ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
CodeNamespace cn = new CodeNamespace(lcNameSpace);

//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(); //已过时
CodeDomProvider csc = CodeDomProvider.CreateProvider("CSharp");

//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 (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
loRetVal = cr.CompiledAssembly;
}
catch (Exception e)
{
loRetVal = null;
throw e;
}

return loRetVal;
}

private static string GetWsClassName(string wsUrl)
{
string[] parts = wsUrl.Split('/');
string[] pps = parts[parts.Length - 1].Split('.');

return pps[0];
}
}