.NET C#动态调用WebService

1.C#实现方法

代码

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Web.Services.Description;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;

namespace WindowsApplication1
{
/// <summary>
///动态调用WebService
/// </summary>
public class WsCaller
{
/// <summary>
/// 获取WebService类型
/// </summary>
/// <param name="wsUrl">WebService地址</param>
/// <returns></returns>
private static string GetWsClassName(string wsUrl)
{
string[] parts = wsUrl.Split('/');
string[] pps = parts[parts.Length - 1].Split('.');

return pps[0];
}

/// <summary>
/// 调用WebService
/// </summary>
/// <param name="wsUrl">WebService地址</param>
/// <param name="methodName">方法名称</param>
/// <param name="args">参数列表</param>
/// <returns></returns>
public static object InvokeWebService(string wsUrl, string methodName, object[] args)
{
return InvokeWebService(wsUrl, null, methodName, args);
}

/// <summary>
/// 调用WebService
/// </summary>
/// <param name="wsUrl">WebService地址</param>
/// <param name="className">类名</param>
/// <param name="methodName">方法名称</param>
/// <param name="args">参数列表</param>
/// <returns></returns>
public static object InvokeWebService(string wsUrl, string className, string methodName, object[] args)
{
string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
if ((className == null) || (className == ""))
{
className = GetWsClassName(wsUrl);
}

try
{
//获取WSDL
WebClient wc = new WebClient();
Stream stream = wc.OpenRead(wsUrl + "?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));
}
}
}
}

View Code
2.调用测试

A:建立Java编写的WebService,公布的一个方法为:HelloWorld,返回值为HelloWorld

发布地址为：http://127.0.0.1:8090/HelloWorld/services/Service

B:建立C#编写的WebService,公布的一个方法为:HelloWorld,返回值为HelloWorld

发布地址为：http://127.0.0.1/WebService/Service.asmx

调用方法代码如下：

try
{
string url = http://127.0.0.1:8090/HelloWorld/services/Service; //C#编写的WebService
//string url = http://localhost/WebService/Service.asmx; //Java编写的WebService
//string[] args = new string[1];
//args[0] = "P000001";
object result = WsCaller.InvokeWebService(url, "HelloWorld", null);
this.textBox1.Text = result.ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

调用成功，返回值均可看到结果:HelloWorld!