using System;
using System.Collections.Generic;using System.Net;using System.IO;using System.Web.Services.Description;using System.CodeDom;using System.CodeDom.Compiler;using Microsoft.CSharp;using System.Collections;using System.Web;
namespace Wicresoft.ITSG.Components.Utilities
{ /// <summary> /// 调用WebService帮助类 /// </summary> public class WebServiceHelper { /// <summary> /// 动态调用web服务 /// </summary> /// <param name="url"></param> /// <param name="methodname"></param> /// <param name="args"></param> /// <returns></returns> public static object InvokeWebService(string url, string methodname, object[] args) { return InvokeWebService(url, null, methodname, args); }
#region 原方法
/// <summary> /// 动态调用web服务 /// </summary> /// <param name="url">>WSDL服务地址</param> /// <param name="classname"></param> /// <param name="methodname">方法名</param> /// <param name="args">参数</param> /// <returns></returns> public static object InvokeWebService(string url, string classname, string methodname, object[] args) { string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; if ((classname == null) || (classname == "")) { classname = GetWsClassName(url); } WebClient wc = null; Stream stream = null; CSharpCodeProvider csc = null; try { //获取WSDL wc = new WebClient(); stream = wc.OpenRead(url + "?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);
//设定编译参数
csc = new CSharpCodeProvider(); 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 (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)); } finally //最后要释放资源 { if (stream != null) { stream.Close(); //stream.Dispose(); } if (wc != null) { wc.Dispose(); } if (csc != null) { csc.Dispose(); } } } #endregion
private static string GetWsClassName(string wsUrl)
{ string className = null; if (!String.IsNullOrEmpty(wsUrl)) { int startIndex = wsUrl.LastIndexOf('/') + 1; if (startIndex > 0) { className = wsUrl.Substring(startIndex).Split('.')[0]; } } return className; }#region sso专用方法 /// <summary> /// 动态调用web服务 /// </summary> /// <param name="url"></param> /// <param name="classname"></param> /// <param name="methodname"></param> /// <param name="args"></param> /// <param name="dllCacheHours"></param> /// <returns></returns> public static object InvokeSSO_WebService(string url, string Dllname, string methodname, object[] args, int dllCacheHours) { string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; string classname = GetWsClassName(url);
System.Web.Caching.Cache myAssemblyCache = HttpContext.Current.Cache;
//初始缓存信息 if (myAssemblyCache["AssemblyCache"] == null) { myAssemblyCache.Insert("AssemblyCache", new Hashtable(), null, DateTime.Now.AddHours(dllCacheHours), TimeSpan.Zero);
if (myAssemblyCache["AssemblyCache"] == null)
{ //防配置失效 myAssemblyCache.Insert("AssemblyCache", new Hashtable(), null, DateTime.Now.AddHours(24), TimeSpan.Zero); } }
//取得缓存
Hashtable myHS = (Hashtable)myAssemblyCache["AssemblyCache"];
WebClient wc = null;
Stream stream = null; CSharpCodeProvider csc = null; ServiceDescription sd = null; ServiceDescriptionImporter sdi = null; CodeNamespace cn = null; CodeCompileUnit ccu = null; CompilerParameters cplist = null; CompilerResults cr = null;
System.Reflection.Assembly assembly = null;
System.Reflection.MethodInfo mi = null;
try
{ //没缓存重新生成 if (!myHS.ContainsKey(Dllname)) { //获取WSDL wc = new WebClient(); stream = wc.OpenRead(url + "?WSDL"); sd = ServiceDescription.Read(stream); sdi = new ServiceDescriptionImporter(); sdi.AddServiceDescription(sd, "", ""); cn = new CodeNamespace(@namespace);
//生成客户端代理类代码
ccu = new CodeCompileUnit(); ccu.Namespaces.Add(cn); sdi.Import(cn, ccu);
//设定编译参数
csc = new CSharpCodeProvider(); cplist = new CompilerParameters(); cplist.GenerateExecutable = false; cplist.GenerateInMemory = true; //cplist.OutputAssembly = Dllname;
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 = csc.CompileAssemblyFromDom(cplist, ccu); if (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
assembly = cr.CompiledAssembly; //记录缓存 myHS.Add(Dllname, assembly);
Wicresoft.ITSG.Components.Utilities.LogUtility.CreateLogManager().Debug("DLL记缓存:" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm") + "*" + myHS.Count.ToString() + "*" + Dllname);
}
assembly = (System.Reflection.Assembly)myHS[Dllname];
Wicresoft.ITSG.Components.Utilities.LogUtility.CreateLogManager().Debug("DLL取缓存:" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm") + "*" + Dllname); //assembly = System.Reflection.Assembly.LoadFrom(@"C:\inetpub\wwwroot\wss\VirtualDirectories\80\bin\" + Dllname); Type t = assembly.GetType(@namespace + "." + classname, true, true); object obj = Activator.CreateInstance(t); mi = t.GetMethod(methodname); return mi.Invoke(obj, args); } catch (Exception ex) { throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace)); } finally { if (stream != null) { stream.Close(); //stream.Dispose(); } if (wc != null) { wc.Dispose(); }
if (csc != null)
{ csc.Dispose(); }
if (sd != null)
{ sd = null; }
if (sdi != null)
{ sdi = null; }
if (cn != null)
{ cn = null; }ccu = null; cplist = null; cr = null; mi = null; } } #endregion }}