增加参数容错和故障跟踪的webservice动态调用类
事先声明：本类代码根据目前博客园最常用的代码改造，允许自行修改和增加方法。
目前的代码有一个问题，就是广大网友反映的无参数出错问题，经修正已经解决，并增加错误捕捉和日志跟踪的入口，见注释部分。
#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
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(e.Message);
}
}
#endregion
#region 执行Web服务方法
/// <summary>
/// 执行代理类指定方法，有返回值
/// </summary>
/// <param name="methodName">方法名称</param>
/// <param name="param">参数</param>
/// <returns>返回值</returns>
public object ExecuteQuery(string methodName, object[] param)
{
object rtnObj = null;
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)
rtnObj = mi.Invoke(Instance, null);
else
rtnObj = 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));
}
return rtnObj;
}
/// <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 ExecuteNoQuery(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));
}
}
#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
using
System;
using System.IO;
using System.Net;
using System.Text;
using System.CodeDom;
using System.Reflection;
using System.Diagnostics;
using System.CodeDom.Compiler;
using System.Web.Services.Description;
using Microsoft.CSharp;
namespace WebServiceHelper
{
// 动态调用web服务帮助类
public class WebServiceHelper
{
#region InvokeWebService
// WebService的方法无参数且类名不确定时使用
public static object InvokeWebService( string url, string methodname)
{
return WebServiceHelper.InvokeWebService(url, null , methodname, null );
}
// WebService的方法无参数但类名确定时使用
public static object InvokeWebService( string url, string classname, string methodname)
{
return WebServiceHelper.InvokeWebService(url, classname, methodname, null );
}
// WebService的方法有参数但类名不确定时使用
public static object InvokeWebService( string url, string methodname, object [] args)
{
return WebServiceHelper.InvokeWebService(url, null , methodname, args);
}
// WebService的方法有参数且类名确定时使用
// [DebuggerHidden]
// [DebuggerStepThrough]
public static object InvokeWebService( string url, string classname, string methodname, object [] args)
{
string @namespace = " FrameWork.WebService.DynamicWebServiceCalling " ;
// 动态获取ClassName
if ((classname == null ) || (classname == "" ))
{
classname = WebServiceHelper.GetWsClassName(url);
}
// 获取WSDL
Stream stream;
// 读取WebService地址的WSDL信息,url地址不对会抛出错误
try
{
WebClient wc = new WebClient();
stream = wc.OpenRead(url.Trim() + " ?WSDL " );
}
catch (WebException we)
{
// 记录Web服务地址错误日志代码位置
// ..."Web服务访问地址【...】未找到，请检查！"
// throw new WebException(we.Message, new WebException(we.StackTrace));
throw new WebException( " Web服务访问地址【 " + url.Trim() + " 】未找到，请检查！ " );
}
CompilerResults cr;
try
{
// 解析获取的WSDL信息
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
cr = icc.CompileAssemblyFromDom(cplist, ccu);
if ( true == cr.Errors.HasErrors)
{
StringBuilder sb = new StringBuilder();
foreach (CompilerError ce in cr.Errors)
{
sb.AppendLine(ce.ToString());
}
throw new Exception(sb.ToString());
}
}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}
object obj;
Type type;
try
{
// 生成代理实例
Assembly assembly = cr.CompiledAssembly;
type = assembly.GetType(@namespace + " . " + classname, true , true );
obj = Activator.CreateInstance(type);
}
catch (TypeLoadException tle)
{
// 记录Web服务类名错误日志代码位置
// ..."Web服务访问类名【...】不正确，请检查！"
// throw new TypeLoadException(tle.Message, new TypeLoadException(tle.StackTrace));
throw new TypeLoadException( " Web服务访问类名【 " + classname + " 】不正确，请检查！ " );
}
try
{
// 调用方法
MethodInfo mi = type.GetMethod(methodname);
if (mi == null )
{
// 记录Web服务方法名错误日志代码位置
// ..."Web服务访问方法名【...】不正确，请检查！"
throw new TypeLoadException( " Web服务访问方法名【 " + methodname + " 】不正确，请检查！ " );
}
try
{
if (args == null )
return mi.Invoke(obj, null );
else
return mi.Invoke(obj, args);
}
catch (TypeLoadException tle)
{
// 记录Web服务方法参数个数错误日志代码位置
// ..."Web服务访问方法【...】参数个数不正确，请检查！"
// throw new TypeLoadException(tle.Message, new TypeLoadException(tle.StackTrace));
throw new TypeLoadException( " Web服务访问方法【 " + methodname + " 】参数个数不正确，请检查！ " );
}
}
catch (Exception ex)
{
throw new Exception(ex.Message, new Exception(ex.StackTrace));
}
}
// 私有方法，默认取url入口的文件名为类名
private static string GetWsClassName( string wsUrl)
{
string [] parts = wsUrl.Split( ' / ' );
string [] pps = parts[parts.Length - 1 ].Split( ' . ' );
return pps[ 0 ];
}
#endregion
}
}
using System.IO;
using System.Net;
using System.Text;
using System.CodeDom;
using System.Reflection;
using System.Diagnostics;
using System.CodeDom.Compiler;
using System.Web.Services.Description;
using Microsoft.CSharp;
namespace WebServiceHelper
{
// 动态调用web服务帮助类
public class WebServiceHelper
{
#region InvokeWebService
// WebService的方法无参数且类名不确定时使用
public static object InvokeWebService( string url, string methodname)
{
return WebServiceHelper.InvokeWebService(url, null , methodname, null );
}
// WebService的方法无参数但类名确定时使用
public static object InvokeWebService( string url, string classname, string methodname)
{
return WebServiceHelper.InvokeWebService(url, classname, methodname, null );
}
// WebService的方法有参数但类名不确定时使用
public static object InvokeWebService( string url, string methodname, object [] args)
{
return WebServiceHelper.InvokeWebService(url, null , methodname, args);
}
// WebService的方法有参数且类名确定时使用
// [DebuggerHidden]
// [DebuggerStepThrough]
public static object InvokeWebService( string url, string classname, string methodname, object [] args)
{
string @namespace = " FrameWork.WebService.DynamicWebServiceCalling " ;
// 动态获取ClassName
if ((classname == null ) || (classname == "" ))
{
classname = WebServiceHelper.GetWsClassName(url);
}
// 获取WSDL
Stream stream;
// 读取WebService地址的WSDL信息,url地址不对会抛出错误
try
{
WebClient wc = new WebClient();
stream = wc.OpenRead(url.Trim() + " ?WSDL " );
}
catch (WebException we)
{
// 记录Web服务地址错误日志代码位置
// ..."Web服务访问地址【...】未找到，请检查！"
// throw new WebException(we.Message, new WebException(we.StackTrace));
throw new WebException( " Web服务访问地址【 " + url.Trim() + " 】未找到，请检查！ " );
}
CompilerResults cr;
try
{
// 解析获取的WSDL信息
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
cr = icc.CompileAssemblyFromDom(cplist, ccu);
if ( true == cr.Errors.HasErrors)
{
StringBuilder sb = new StringBuilder();
foreach (CompilerError ce in cr.Errors)
{
sb.AppendLine(ce.ToString());
}
throw new Exception(sb.ToString());
}
}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}
object obj;
Type type;
try
{
// 生成代理实例
Assembly assembly = cr.CompiledAssembly;
type = assembly.GetType(@namespace + " . " + classname, true , true );
obj = Activator.CreateInstance(type);
}
catch (TypeLoadException tle)
{
// 记录Web服务类名错误日志代码位置
// ..."Web服务访问类名【...】不正确，请检查！"
// throw new TypeLoadException(tle.Message, new TypeLoadException(tle.StackTrace));
throw new TypeLoadException( " Web服务访问类名【 " + classname + " 】不正确，请检查！ " );
}
try
{
// 调用方法
MethodInfo mi = type.GetMethod(methodname);
if (mi == null )
{
// 记录Web服务方法名错误日志代码位置
// ..."Web服务访问方法名【...】不正确，请检查！"
throw new TypeLoadException( " Web服务访问方法名【 " + methodname + " 】不正确，请检查！ " );
}
try
{
if (args == null )
return mi.Invoke(obj, null );
else
return mi.Invoke(obj, args);
}
catch (TypeLoadException tle)
{
// 记录Web服务方法参数个数错误日志代码位置
// ..."Web服务访问方法【...】参数个数不正确，请检查！"
// throw new TypeLoadException(tle.Message, new TypeLoadException(tle.StackTrace));
throw new TypeLoadException( " Web服务访问方法【 " + methodname + " 】参数个数不正确，请检查！ " );
}
}
catch (Exception ex)
{
throw new Exception(ex.Message, new Exception(ex.StackTrace));
}
}
// 私有方法，默认取url入口的文件名为类名
private static string GetWsClassName( string wsUrl)
{
string [] parts = wsUrl.Split( ' / ' );
string [] pps = parts[parts.Length - 1 ].Split( ' . ' );
return pps[ 0 ];
}
#endregion
}
}