using System; using System.CodeDom; using System.CodeDom.Compiler; using System.Collections.Generic; using System.IO; using System.Net; using System.Reflection; using System.Web.Services.Description; using Microsoft.CSharp; namespace Utility { /// <summary> /// 动态调用WebService（支持SaopHeader） /// </summary> public class WebServiceHelper { /// <summary> /// 获取WebService的类名 /// </summary> /// <param name="wsUrl">WebService地址</param> /// <returns>返回WebService的类名</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（不带SoapHeader） /// </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>返回调用结果</returns> public static object InvokeWebService(string wsUrl,string methodName,object[] args) { return InvokeWebService(wsUrl,null,methodName,args); } /// <summary> /// 调用WebService（带SoapHeader） /// </summary> /// <param name="wsUrl">WebService地址</param> /// <param name="methodName">方法名称</param> /// <param name="soapHeader">SOAP头</param> /// <param name="args">参数列表</param> /// <returns>返回调用结果</returns> public static object InvokeWebService(string wsUrl,SoapHeader soapHeader,soapHeader,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="soapHeader">SOAP头</param> /// <param name="args">参数列表</param> /// <returns>返回调用结果</returns> public static object InvokeWebService(string wsUrl,string className,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); FieldInfo[] arry = t.GetFields(); FieldInfo client = null; object clientkey = null; if (soapHeader != null) { //Soap头开始 client = t.GetField(soapHeader.ClassName + "Value"); //获取客户端验证对象 Type typeClient = assembly.GetType(@namespace + "." + soapHeader.ClassName); //为验证对象赋值 clientkey = Activator.CreateInstance(typeClient); foreach (keyvaluePair<string,object> property in soapHeader.Properties) { typeClient.GetField(property.Key).SetValue(clientkey,property.Value); } //Soap头结束 } //实例类型对象 object obj = Activator.CreateInstance(t); if (soapHeader != null) { //设置Soap头 client.SetValue(obj,clientkey); } 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)); } } /// <summary> /// SOAP头 /// </summary> public class SoapHeader { /// <summary> /// 构造一个SOAP头 /// </summary> public SoapHeader() { this.Properties = new Dictionary<string,object>(); } /// <summary> /// 构造一个SOAP头 /// </summary> /// <param name="className">SOAP头的类名</param> public SoapHeader(string className) { this.ClassName = className; this.Properties = new Dictionary<string,object>(); } /// <summary> /// 构造一个SOAP头 /// </summary> /// <param name="className">SOAP头的类名</param> /// <param name="properties">SOAP头的类属性名及属性值</param> public SoapHeader(string className,Dictionary<string,object> properties) { this.ClassName = className; this.Properties = properties; } /// <summary> /// SOAP头的类名 /// </summary> public string ClassName { get; set; } /// <summary> /// SOAP头的类属性名及属性值 /// </summary> public Dictionary<string,object> Properties { get; set; } /// <summary> /// 为SOAP头增加一个属性及值 /// </summary> /// <param name="name">SOAP头的类属性名</param> /// <param name="value">SOAP头的类属性值</param> public void AddProperty(string name,object value) { if (this.Properties == null) { this.Properties = new Dictionary<string,object>(); } Properties.Add(name,value); } } } }
假设SoapHeader为：
public class Variable : SoapHeader
{
public string UserName { get; set; }
public string Password { get; set; }
}
WebServiceHelper.soapHeader header = new WebServiceHelper.soapHeader("Variable"); header.AddProperty("UserName","aa"); header.AddProperty("Password","bb"); object r = WebServiceHelper.InvokeWebService( "http://localhost:2996/WebService1.asmx","HelloWorld",header,null);
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