之前做的工作需要物流信息查询和顺丰进行对接。看了看顺丰提供的对接文档。WebService服务，想想不能每次都重新写调用的代码吧，如何复用呢。
查了查动态调用WebService的方式，学习了下。
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.IO;
using System.Net;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Web.Services.Description;
using System.Xml.Serialization;
using System.Web.Services.Discovery;
using System.Xml.Schema;
using System.Text;
using System.Security.Cryptography;
using System.Reflection;
using System.Collections.Generic;
using System.Xml;
namespace TPSVService
{
/// <summary>
/// WebServiceProxy 的摘要说明
/// </summary>
[WebService(Namespace = "http://www.junph.com/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class WebServiceProxy : System.Web.Services.WebService
{
#region 私有变量和属性定义
/// <summary>
/// web服务地址
/// </summary>
private string _wsdlUrl = string.Empty;
/// <summary>
/// web服务名称
/// </summary>
private string _wsdlName = string.Empty;
/// <summary>
/// 代理类命名空间
/// </summary>
private string _wsdlNamespace = "FrameWork.WebService.DynamicWebServiceCalling.{0}";
/// <summary>
/// 代理类类型名称
/// </summary>
private Type _typeName = null;
/// <summary>
/// 程序集名称
/// </summary>
private string _assName = string.Empty;
/// <summary>
/// 代理类所在程序集路径
/// </summary>
private string _assPath = string.Empty;
/// <summary>
/// 代理类的实例
/// </summary>
private object _instance = null;
/// <summary>
/// 代理类的实例
/// </summary>
private object Instance
{
get
{
if (_instance == null)
{
_instance = Activator.CreateInstance(_typeName);
return _instance;
}
else
return _instance;
}
}
#endregion
#region 构造函数
public WebServiceProxy(string wsdlUrl)
{
this._wsdlUrl = wsdlUrl;
string wsdlName = WebServiceProxy.getWsclassName(wsdlUrl);
this._wsdlName = wsdlName;
this._assName = string.Format(_wsdlNamespace, wsdlName);
this._assPath = Path.GetTempPath() + this._assName + getMd5Sum(this._wsdlUrl) + ".dll";
this.CreateServiceAssembly();
}
public WebServiceProxy(string wsdlUrl, string wsdlName)
{
this._wsdlUrl = wsdlUrl;
this._wsdlName = wsdlName;
this._assName = string.Format(_wsdlNamespace, wsdlName);
this._assPath = Path.GetTempPath() + this._assName + getMd5Sum(this._wsdlUrl) + ".dll";
this.CreateServiceAssembly();
}
#endregion
#region 得到WSDL信息，生成本地代理类并编译为DLL，构造函数调用，类生成时加载
/// <summary>
/// 得到WSDL信息，生成本地代理类并编译为DLL
/// </summary>
private void CreateServiceAssembly()
{
if (this.checkCache())
{
this.initTypeName();
return;
}
if (string.IsNullOrEmpty(this._wsdlUrl))
{
return;
}
try
{
//使用WebClient下载WSDL信息
//MyRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)";
WebClient web = new WebClient();
Stream stream = web.OpenRead(this._wsdlUrl);
ServiceDescription description = ServiceDescription.Read(stream);//创建和格式化WSDL文档
ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类
importer.ProtocolName = "Soap";
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
//使用CodeDom编译客户端代理类
CodeNamespace nmspace = new CodeNamespace(_assName); //为代理类添加命名空间
CodeCompileUnit unit = new CodeCompileUnit();
unit.Namespaces.Add(nmspace);
this.checkForImports(this._wsdlUrl, importer);
ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit);
CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
CompilerParameters parameter = new CompilerParameters();
parameter.ReferencedAssemblies.Add("System.dll");
parameter.ReferencedAssemblies.Add("System.XML.dll");
parameter.ReferencedAssemblies.Add("System.Web.Services.dll");
parameter.ReferencedAssemblies.Add("System.Data.dll");
parameter.GenerateExecutable = false;
parameter.GenerateInMemory = false;
parameter.IncludeDebugInformation = false;
CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);
provider.Dispose();
if (result.Errors.HasErrors)
{
string errors = string.Format(@"编译错误:{0}错误！", result.Errors.Count);
foreach (CompilerError error in result.Errors)
{
errors += error.ErrorText;
}
throw new Exception(errors);
}
this.copyTempAssembly(result.PathToAssembly);
this.initTypeName();
}
catch (Exception e)
{
throw new Exception("创建代理对象异常",e);
}
}
#endregion
#region 执行Web服务方法
/// <summary>
/// 执行代理类指定方法，无返回值
/// </summary>
/// <param name="methodName">方法名称</param>
/// <param name="param">参数</param>
public void Execute(string methodName, object[] param)
{
try
{
if (this._typeName == null)
{
//记录Web服务访问类名错误日志代码位置
throw new TypeLoadException("Web服务访问类名【" + this._wsdlName + "】不正确，请检查！");
}
//调用方法
MethodInfo mi = this._typeName.GetMethod(methodName);
if (mi == null)
{
//记录Web服务方法名错误日志代码位置
throw new TypeLoadException("Web服务访问方法名【" + methodName + "】不正确，请检查！");
}
try
{
if (param == null)
mi.Invoke(Instance, null);
else
mi.Invoke(Instance, param);
}
catch (TypeLoadException tle)
{
//记录Web服务方法参数个数错误日志代码位置
throw new TypeLoadException("Web服务访问方法【" + methodName + "】参数个数不正确，请检查！", new TypeLoadException(tle.StackTrace));
}
}
catch (Exception ex)
{
throw new Exception(ex.Message, new Exception(ex.StackTrace));
}
}
/// <summary>
/// 执行代理类指定方法，无返回值
/// </summary>
/// <param name="methodName">方法名称</param>
/// <param name="param">参数</param>
public string Execute(string methodName, string param)
{
try
{
if (this._typeName == null)
{
//记录Web服务访问类名错误日志代码位置
throw new TypeLoadException("Web服务访问类名【" + this._wsdlName + "】不正确，请检查！");
}
//调用方法
MethodInfo mi = this._typeName.GetMethod(methodName);
if (mi == null)
{
//记录Web服务方法名错误日志代码位置
throw new TypeLoadException("Web服务访问方法名【" + methodName + "】不正确，请检查！");
}
try
{
return (string) mi.Invoke(Instance, new[] {param});
}
catch (TypeLoadException tle)
{
//记录Web服务方法参数个数错误日志代码位置
throw new TypeLoadException("Web服务访问方法【" + methodName + "】参数个数不正确，请检查！", new TypeLoadException(tle.StackTrace));
}
}
catch (Exception ex)
{
throw new Exception(ex.Message, new Exception(ex.StackTrace));
}
}
#endregion
#region 私有方法
/// <summary>
/// 得到代理类类型名称
/// </summary>
private void initTypeName()
{
Assembly serviceAsm = Assembly.LoadFrom(this._assPath);
Type[] types = serviceAsm.GetTypes();
string objTypeName = "";
foreach (Type t in types)
{
if (t.BaseType == typeof(SoapHttpClientProtocol))
{
objTypeName = t.Name;
break;
}
}
_typeName = serviceAsm.GetType(this._assName + "." + objTypeName);
}
/// <summary>
/// 根据web service文档架构向代理类添加ServiceDescription和XmlSchema
/// </summary>
/// <param name="baseWSDLUrl">web服务地址</param>
/// <param name="importer">代理类</param>
private void checkForImports(string baseWsdlUrl, ServiceDescriptionImporter importer)
{
DiscoveryClientProtocol dcp = new DiscoveryClientProtocol();
dcp.DiscoverAny(baseWsdlUrl);
dcp.ResolveAll();
foreach (object osd in dcp.Documents.Values)
{
if (osd is ServiceDescription) importer.AddServiceDescription((ServiceDescription)osd, null, null); ;
if (osd is XmlSchema) importer.Schemas.Add((XmlSchema)osd);
}
}
/// <summary>
/// 复制程序集到指定路径
/// </summary>
/// <param name="pathToAssembly">程序集路径</param>
private void copyTempAssembly(string pathToAssembly)
{
File.Copy(pathToAssembly, this._assPath);
}
private string getMd5Sum(string str)
{
Encoder enc = System.Text.Encoding.Unicode.GetEncoder();
byte[] unicodeText = new byte[str.Length * 2];
enc.GetBytes(str.ToCharArray(), 0, str.Length, unicodeText, 0, true);
MD5 md5 = new MD5CryptoServiceProvider();
byte[] result = md5.ComputeHash(unicodeText);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < result.Length; i++)
{
sb.Append(result[i].ToString("X2"));
}
return sb.ToString();
}
/// <summary>
/// 是否已经存在该程序集
/// </summary>
/// <returns>false:不存在该程序集,true:已经存在该程序集</returns>
private bool checkCache()
{
if (File.Exists(this._assPath))
{
return true;
}
return false;
}
//私有方法，默认取url入口的文件名为类名
private static string getWsclassName(string wsdlUrl)
{
string[] parts = wsdlUrl.Split(‘/‘);
string[] pps = parts[parts.Length - 1].Split(‘.‘);
return pps[0];
}
#endregion
}
}
ok，其中的执行方法的签名可以根据需要，自己增加。
下面就是根据对接文档测试的方法，返回的报文需要自己解析，由于是测试没有写。测试成功与否即可。
private void button1_Click(object sender, EventArgs e)
{
string url = "http://bsp-test.sf-express.com:9090/bsp-ois/ws/expressService?wsdl";
//请求报文
StringBuilder sb = new StringBuilder(2048);
sb.Append("<Request service=‘RouteService‘ lang=‘zh-CN‘>");
sb.Append("<Head>TXJK,GiR0noJsFsr1UR;X</Head>");
sb.Append("<Body>");
sb.Append("<RouteRequest tracking_type=‘1‘ method_type=‘1‘ tracking_number=‘905506934190‘ />");
sb.Append("</Body>");
sb.Append("</Request>");
string name = "sfexpressService";
WebServiceProxy wsd;
try
{
wsd = new WebServiceProxy(url, name);
}
catch (Exception ex)
{
throw new Exception("创建代理对象异常", ex);
}
string suc = wsd.Execute(name, sb.ToString());
}
(参考原文：http://www.cnblogs.com/gc2013/p/3764817.html)