webservice的配置动态调用方法 [转]

在C#程序设计中，经常碰到调用webservice问题，一般都是在程序中进行引用后调用，但是如果webservice地址发生变化，调用webservice的程序就会出现问题，我们可以在webconfig文件预先配置好webservice的引用地址，通过方法实现动态调用，实现方式如下：

首选定义一个动态Web服务代理类：

using System; using System.Collections.Generic; using System.Text; using System.Xml; using System.Web.Services.Description; using System.CodeDom; using System.CodeDom.Compiler; using System.Reflection; namespace PDBizTalkGetTargetAddress { ///<summary> ///动态Web服务代理类 ///</summary> ///<example> /// Agent agent = new Agent("http://sample.com/services/SampleService.asmx"); ///</example> public class Agent { private object agent; private Type agentType; private const string CODE_NAMESPACE = "Beyondbit.WebServiceAgent.Dynamic"; ///<summary> ///创建新的代理 ///</summary> ///<param name="serviceUri">webserviced uri</param> public Agent(string serviceUri) { XmlTextReader reader = new XmlTextReader(serviceUri + "?wsdl"); ServiceDescription sd = ServiceDescription.Read(reader); ServiceDescriptionImporter sdi = new ServiceDescriptionImporter(); sdi.AddServiceDescription(sd, null, null); CodeNamespace cn = new CodeNamespace(CODE_NAMESPACE); CodeCompileUnit ccu = new CodeCompileUnit(); ccu.Namespaces.Add(cn); sdi.Import(cn, ccu); Microsoft.CSharp.CSharpCodeProvider icc = new Microsoft.CSharp.CSharpCodeProvider(); CompilerParameters cp = new CompilerParameters(); CompilerResults cr = icc.CompileAssemblyFromDom(cp, ccu); agentType = cr.CompiledAssembly.GetTypes()[0]; agent = Activator.CreateInstance(agentType); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="methodName">方法名，大小写敏感</param> ///<param name="args">参数，按照参数顺序赋值</param> ///<returns>Web服务的返回值</returns> public object Invoke(string methodName, params object[] args) { MethodInfo mi = agentType.GetMethod(methodName); return this.Invoke(mi, args); } ///<summary> ///调用指定方法 ///</summary> ///<param name="method">方法信息</param> ///<param name="args">参数，按照参数顺序赋值</param> ///<returns>Web服务的返回值</returns> public object Invoke(MethodInfo method, params object[] args) { return method.Invoke(agent, args); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="methodName">方法名，大小写敏感</param> ///<param name="arg0">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(string methodName, object arg0) { MethodInfo mi = agentType.GetMethod(methodName); return this.Invoke(mi, new object[] { arg0 }); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="methodName">方法名，大小写敏感</param> ///<param name="args0">参数</param> ///<param name="args1">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(string methodName, object arg0, object arg1) { MethodInfo mi = agentType.GetMethod(methodName); return this.Invoke(mi, new object[] { arg0, arg1 }); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="methodName">方法名，大小写敏感</param> ///<param name="args0">参数</param> ///<param name="args1">参数</param> ///<param name="args2">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(string methodName, object arg0, object arg1, object arg2) { MethodInfo mi = agentType.GetMethod(methodName); return this.Invoke(mi, new object[] { arg0, arg1, arg2 }); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="method">方法信息</param> ///<param name="args0">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(MethodInfo method, object arg0) { return this.Invoke(method, new object[] { arg0 }); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="method">方法信息</param> ///<param name="arg0">参数</param> ///<param name="arg1">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(MethodInfo method, object arg0, object arg1) { return this.Invoke(method, new object[] { arg0, arg1 }); } ///<summary> ///调用指定的方法 ///</summary> ///<param name="method">方法信息</param> ///<param name="arg0">参数</param> ///<param name="arg1">参数</param> ///<param name="arg2">参数</param> ///<returns>Web服务的返回值</returns> public object Invoke(MethodInfo method, object arg0, object arg1, object arg2) { return this.Invoke(method, new object[] { arg0, arg1, arg2 }); } ///<summary> ///获取所有公共方法 ///</summary> public MethodInfo[] Methods { get { return agentType.GetMethods(); } } } }

调用方法：

public void sendStr(string message,string messs)

{

string SMWebserviceURL = System.Configuration.ConfigurationManager.AppSettings["URL"].ToString();

Agent agent = new Agent(SMWebserviceURL);

object[] Par = new object[8];

Par[0] = message;

Par[1] = messs;

agent.Invoke("SendMessage", Par);

}

}