深入.net调用webservice的总结分析

  最近做一个项目,由于是在别人框架里开发app,导致了很多限制,其中一个就是不能直接引用webservice 。

  我们都知道,调用webserivice 最简单的方法就是在 "引用"  那里点击右键,然后选择"引用web服务",再输入服务地址。

  确定后,会生成一个app.config 里面就会自动生成了一些配置信息。

  现在正在做的这个项目就不能这么干。后来经过一番搜索,就找出另外几种动态调用webservice 的方法。

  废话少说,下面是webservice 代码

  

复制代码 代码如下:

  View Code

  using System;

  using System.Collections.Generic;

  using System.Linq;

  using System.Web;

  using System.Web.Services;

  namespace TestWebService

  {

  /// <summary>

  /// Service1 的摘要说明

  /// </summary>

  [WebService(Namespace = "http://tempuri.org/",Description="我的Web服务")]

  [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

  [System.ComponentModel.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 TestWebService : System.Web.Services.WebService

  {

  [WebMethod]

  public string HelloWorld()

  {

  return "测试Hello World";

  }

  [WebMethod]

  public string Test()

  {

  return "测试Test";

  }

  [WebMethod(CacheDuration = 60,Description = "测试")]

  public List<String> GetPersons()

  {

  List<String> list = new List<string>();

  list.Add("测试一");

  list.Add("测试二");

  list.Add("测试三");

  return list;

  }

  }

  }

  动态调用示例:

  方法一:

  看到很多动态调用WebService都只是动态调用地址而已,下面发一个不光是根据地址调用,方法名也可以自己指定的,主要原理是根据指定的WebService地址的WSDL,然后解析模拟生成一个代理类,通过反射调用里面的方法

  

复制代码 代码如下:

  View Code

  using System;

  using System.IO;

  using System.Collections.Generic;

  using System.Linq;

  using System.Collections;

  using System.Web;

  using System.Net;

  using System.Reflection;

  using System.CodeDom;

  using System.CodeDom.Compiler;

  using System.Web.Services;

  using System.Text;

  using System.Web.Services.Description;

  using System.Web.Services.Protocols;

  using System.Xml.Serialization;

  using System.Windows.Forms;

  namespace ConsoleApplication1

  {

  class Program

  {

  static void Main(string[] args)

  {

  WebClient client = new WebClient();

  String url = "http://localhost:3182/Service1.asmx?WSDL";//这个地址可以写在Config文件里面,这里取出来就行了.在原地址后面加上: ?WSDL

  Stream stream = client.OpenRead(url);

  ServiceDescription description = ServiceDescription.Read(stream);

  ServiceDescriptionImporter importer = new ServiceDescriptionImporter();//创建客户端代理代理类。

  importer.ProtocolName = "Soap"; //指定访问协议。

  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。

  CodeNamespace nmspace = new CodeNamespace(); //命名空间

  nmspace.Name = "TestWebService";

  CodeCompileUnit unit = new CodeCompileUnit();

  unit.Namespaces.Add(nmspace);

  ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit);

  CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");

  CompilerParameters parameter = new CompilerParameters();

  parameter.GenerateExecutable = false;

  parameter.OutputAssembly = "MyTest.dll";//输出程序集的名称

  parameter.ReferencedAssemblies.Add("System.dll");

  parameter.ReferencedAssemblies.Add("System.XML.dll");

  parameter.ReferencedAssemblies.Add("System.Web.Services.dll");

  parameter.ReferencedAssemblies.Add("System.Data.dll");

  CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit);

  if (result.Errors.HasErrors)

  {

  // 显示编译错误信息

  }

  Assembly asm = Assembly.LoadFrom("MyTest.dll");//加载前面生成的程序集

  Type t = asm.GetType("TestWebService.TestWebService");

  object o = Activator.CreateInstance(t);

  MethodInfo method = t.GetMethod("GetPersons");//GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下

  String[] item = (String[])method.Invoke(o, null);

  //注:method.Invoke(o, null)返回的是一个Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o, null)转一下就行了,method.Invoke(0,null)这里的null可以传调用方法需要的参数,string[]形式的

  foreach (string str in item)

  Console.WriteLine(str);

  //上面是根据WebService地址,模似生成一个代理类,如果你想看看生成的代码文件是什么样子,可以用以下代码保存下来,默认是保存在bin目录下面

  TextWriter writer = File.CreateText("MyTest.cs");

  provider.GenerateCodeFromCompileUnit(unit, writer, null);

  writer.Flush();

  writer.Close();

  }

  }

  }

  方法二:利用 wsdl.exe生成webservice代理类:

  根据提供的wsdl生成webservice代理类,然后在代码里引用这个类文件。

  步骤:

  1、在开始菜单找到  Microsoft Visual Studio 2010 下面的Visual Studio Tools , 点击Visual Studio 命令提示(2010),打开命令行。

  2、 在命令行中输入:  wsdl /language:c# /n:TestDemo /out:d:/Temp/TestService.cs http://jm1.services.gmcc.net/ad/Services/AD.asmx?wsdl

  这句命令行的意思是:对最后面的服务地址进行编译,在D盘temp 目录下生成testservice文件。

  3、 把上面命令编译后的cs文件,复制到我们项目中,在项目代码中可以直接new 一个出来后,可以进行调用。

  贴出由命令行编译出来的代码:

  

复制代码 代码如下:

  View Code

  //------------------------------------------------------------------------------

  // <auto-generated>

  //     此代码由工具生成。

  //     运行时版本:4.0.30319.225

  //

  //     对此文件的更改可能会导致不正确的行为,并且如果

  //     重新生成代码,这些更改将会丢失。

  // </auto-generated>

  //------------------------------------------------------------------------------

  //

  // 此源代码由 wsdl 自动生成, Version=4.0.30319.1。

  //

  namespace Bingosoft.Module.SurveyQuestionnaire.DAL {

  using System;

  using System.Diagnostics;

  using System.Xml.Serialization;

  using System.ComponentModel;

  using System.Web.Services.Protocols;

  using System.Web.Services;

  using System.Data;

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  [System.Web.Services.WebServiceBindingAttribute(Name="WebserviceForILookSoap", Namespace="http://tempuri.org/")]

  public partial class WebserviceForILook : System.Web.Services.Protocols.SoapHttpClientProtocol {

  private System.Threading.SendOrPostCallback GetRecordNumOperationCompleted;

  private System.Threading.SendOrPostCallback GetVoteListOperationCompleted;

  private System.Threading.SendOrPostCallback VoteOperationCompleted;

  private System.Threading.SendOrPostCallback GiveUpOperationCompleted;

  private System.Threading.SendOrPostCallback GetQuestionTaskListOperationCompleted;

  /// <remarks/>

  public WebserviceForILook() {

  this.Url = "http://st1.services.gmcc.net/qnaire/Services/WebserviceForILook.asmx";

  }

  /// <remarks/>

  public event GetRecordNumCompletedEventHandler GetRecordNumCompleted;

  /// <remarks/>

  public event GetVoteListCompletedEventHandler GetVoteListCompleted;

  /// <remarks/>

  public event VoteCompletedEventHandler VoteCompleted;

  /// <remarks/>

  public event GiveUpCompletedEventHandler GiveUpCompleted;

  /// <remarks/>

  public event GetQuestionTaskListCompletedEventHandler GetQuestionTaskListCompleted;

  /// <remarks/>

  [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetRecordNum", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

  public int[] GetRecordNum(string appcode, string userID) {

  object[] results = this.Invoke("GetRecordNum", new object[] {

  appcode,

  userID});

  return ((int[])(results[0]));

  }

  /// <remarks/>

  public System.IAsyncResult BeginGetRecordNum(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

  return this.BeginInvoke("GetRecordNum", new object[] {

  appcode,

  userID}, callback, asyncState);

  }

  /// <remarks/>

  public int[] EndGetRecordNum(System.IAsyncResult asyncResult) {

  object[] results = this.EndInvoke(asyncResult);

  return ((int[])(results[0]));

  }

  /// <remarks/>

  public void GetRecordNumAsync(string appcode, string userID) {

  this.GetRecordNumAsync(appcode, userID, null);

  }

  /// <remarks/>

  public void GetRecordNumAsync(string appcode, string userID, object userState) {

  if ((this.GetRecordNumOperationCompleted == null)) {

  this.GetRecordNumOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetRecordNumOperationCompleted);

  }

  this.InvokeAsync("GetRecordNum", new object[] {

  appcode,

  userID}, this.GetRecordNumOperationCompleted, userState);

  }

  private void OnGetRecordNumOperationCompleted(object arg) {

  if ((this.GetRecordNumCompleted != null)) {

  System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

  this.GetRecordNumCompleted(this, new GetRecordNumCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

  }

  }

  /// <remarks/>

  [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetVoteList", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

  public System.Data.DataSet GetVoteList(string appcode, string userID) {

  object[] results = this.Invoke("GetVoteList", new object[] {

  appcode,

  userID});

  return ((System.Data.DataSet)(results[0]));

  }

  /// <remarks/>

  public System.IAsyncResult BeginGetVoteList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

  return this.BeginInvoke("GetVoteList", new object[] {

  appcode,

  userID}, callback, asyncState);

  }

  /// <remarks/>

  public System.Data.DataSet EndGetVoteList(System.IAsyncResult asyncResult) {

  object[] results = this.EndInvoke(asyncResult);

  return ((System.Data.DataSet)(results[0]));

  }

  /// <remarks/>

  public void GetVoteListAsync(string appcode, string userID) {

  this.GetVoteListAsync(appcode, userID, null);

  }

  /// <remarks/>

  public void GetVoteListAsync(string appcode, string userID, object userState) {

  if ((this.GetVoteListOperationCompleted == null)) {

  this.GetVoteListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetVoteListOperationCompleted);

  }

  this.InvokeAsync("GetVoteList", new object[] {

  appcode,

  userID}, this.GetVoteListOperationCompleted, userState);

  }

  private void OnGetVoteListOperationCompleted(object arg) {

  if ((this.GetVoteListCompleted != null)) {

  System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

  this.GetVoteListCompleted(this, new GetVoteListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

  }

  }

  /// <remarks/>

  [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/Vote", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

  public bool Vote(string appcode, string userID, string qTaskID, string answer) {

  object[] results = this.Invoke("Vote", new object[] {

  appcode,

  userID,

  qTaskID,

  answer});

  return ((bool)(results[0]));

  }

  /// <remarks/>

  public System.IAsyncResult BeginVote(string appcode, string userID, string qTaskID, string answer, System.AsyncCallback callback, object asyncState) {

  return this.BeginInvoke("Vote", new object[] {

  appcode,

  userID,

  qTaskID,

  answer}, callback, asyncState);

  }

  /// <remarks/>

  public bool EndVote(System.IAsyncResult asyncResult) {

  object[] results = this.EndInvoke(asyncResult);

  return ((bool)(results[0]));

  }

  /// <remarks/>

  public void VoteAsync(string appcode, string userID, string qTaskID, string answer) {

  this.VoteAsync(appcode, userID, qTaskID, answer, null);

  }

  /// <remarks/>

  public void VoteAsync(string appcode, string userID, string qTaskID, string answer, object userState) {

  if ((this.VoteOperationCompleted == null)) {

  this.VoteOperationCompleted = new System.Threading.SendOrPostCallback(this.OnVoteOperationCompleted);

  }

  this.InvokeAsync("Vote", new object[] {

  appcode,

  userID,

  qTaskID,

  answer}, this.VoteOperationCompleted, userState);

  }

  private void OnVoteOperationCompleted(object arg) {

  if ((this.VoteCompleted != null)) {

  System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

  this.VoteCompleted(this, new VoteCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

  }

  }

  /// <remarks/>

  [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GiveUp", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

  public bool GiveUp(string appcode, string userID, string qTaskID) {

  object[] results = this.Invoke("GiveUp", new object[] {

  appcode,

  userID,

  qTaskID});

  return ((bool)(results[0]));

  }

  /// <remarks/>

  public System.IAsyncResult BeginGiveUp(string appcode, string userID, string qTaskID, System.AsyncCallback callback, object asyncState) {

  return this.BeginInvoke("GiveUp", new object[] {

  appcode,

  userID,

  qTaskID}, callback, asyncState);

  }

  /// <remarks/>

  public bool EndGiveUp(System.IAsyncResult asyncResult) {

  object[] results = this.EndInvoke(asyncResult);

  return ((bool)(results[0]));

  }

  /// <remarks/>

  public void GiveUpAsync(string appcode, string userID, string qTaskID) {

  this.GiveUpAsync(appcode, userID, qTaskID, null);

  }

  /// <remarks/>

  public void GiveUpAsync(string appcode, string userID, string qTaskID, object userState) {

  if ((this.GiveUpOperationCompleted == null)) {

  this.GiveUpOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGiveUpOperationCompleted);

  }

  this.InvokeAsync("GiveUp", new object[] {

  appcode,

  userID,

  qTaskID}, this.GiveUpOperationCompleted, userState);

  }

  private void OnGiveUpOperationCompleted(object arg) {

  if ((this.GiveUpCompleted != null)) {

  System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

  this.GiveUpCompleted(this, new GiveUpCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

  }

  }

  /// <remarks/>

  [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetQuestionTaskList", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]

  public System.Data.DataSet GetQuestionTaskList(string appcode, string userID) {

  object[] results = this.Invoke("GetQuestionTaskList", new object[] {

  appcode,

  userID});

  return ((System.Data.DataSet)(results[0]));

  }

  /// <remarks/>

  public System.IAsyncResult BeginGetQuestionTaskList(string appcode, string userID, System.AsyncCallback callback, object asyncState) {

  return this.BeginInvoke("GetQuestionTaskList", new object[] {

  appcode,

  userID}, callback, asyncState);

  }

  /// <remarks/>

  public System.Data.DataSet EndGetQuestionTaskList(System.IAsyncResult asyncResult) {

  object[] results = this.EndInvoke(asyncResult);

  return ((System.Data.DataSet)(results[0]));

  }

  /// <remarks/>

  public void GetQuestionTaskListAsync(string appcode, string userID) {

  this.GetQuestionTaskListAsync(appcode, userID, null);

  }

  /// <remarks/>

  public void GetQuestionTaskListAsync(string appcode, string userID, object userState) {

  if ((this.GetQuestionTaskListOperationCompleted == null)) {

  this.GetQuestionTaskListOperationCompleted = new System.Threading.SendOrPostCallback(this.OnGetQuestionTaskListOperationCompleted);

  }

  this.InvokeAsync("GetQuestionTaskList", new object[] {

  appcode,

  userID}, this.GetQuestionTaskListOperationCompleted, userState);

  }

  private void OnGetQuestionTaskListOperationCompleted(object arg) {

  if ((this.GetQuestionTaskListCompleted != null)) {

  System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));

  this.GetQuestionTaskListCompleted(this, new GetQuestionTaskListCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));

  }

  }

  /// <remarks/>

  public new void CancelAsync(object userState) {

  base.CancelAsync(userState);

  }

  }

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  public delegate void GetRecordNumCompletedEventHandler(object sender, GetRecordNumCompletedEventArgs e);

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  public partial class GetRecordNumCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

  private object[] results;

  internal GetRecordNumCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

  base(exception, cancelled, userState) {

  this.results = results;

  }

  /// <remarks/>

  public int[] Result {

  get {

  this.RaiseExceptionIfNecessary();

  return ((int[])(this.results[0]));

  }

  }

  }

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  public delegate void GetVoteListCompletedEventHandler(object sender, GetVoteListCompletedEventArgs e);

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  public partial class GetVoteListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

  private object[] results;

  internal GetVoteListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

  base(exception, cancelled, userState) {

  this.results = results;

  }

  /// <remarks/>

  public System.Data.DataSet Result {

  get {

  this.RaiseExceptionIfNecessary();

  return ((System.Data.DataSet)(this.results[0]));

  }

  }

  }

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  public delegate void VoteCompletedEventHandler(object sender, VoteCompletedEventArgs e);

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  public partial class VoteCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

  private object[] results;

  internal VoteCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

  base(exception, cancelled, userState) {

  this.results = results;

  }

  /// <remarks/>

  public bool Result {

  get {

  this.RaiseExceptionIfNecessary();

  return ((bool)(this.results[0]));

  }

  }

  }

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  public delegate void GiveUpCompletedEventHandler(object sender, GiveUpCompletedEventArgs e);

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  public partial class GiveUpCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

  private object[] results;

  internal GiveUpCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

  base(exception, cancelled, userState) {

  this.results = results;

  }

  /// <remarks/>

  public bool Result {

  get {

  this.RaiseExceptionIfNecessary();

  return ((bool)(this.results[0]));

  }

  }

  }

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  public delegate void GetQuestionTaskListCompletedEventHandler(object sender, GetQuestionTaskListCompletedEventArgs e);

  /// <remarks/>

  [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "4.0.30319.1")]

  [System.Diagnostics.DebuggerStepThroughAttribute()]

  [System.ComponentModel.DesignerCategoryAttribute("code")]

  public partial class GetQuestionTaskListCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {

  private object[] results;

  internal GetQuestionTaskListCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) :

  base(exception, cancelled, userState) {

  this.results = results;

  }

  /// <remarks/>

  public System.Data.DataSet Result {

  get {

  this.RaiseExceptionIfNecessary();

  return ((System.Data.DataSet)(this.results[0]));

  }

  }

  }

  }

  方法三:利用http 协议的get和post

  这是最为灵活的方法。

  

复制代码 代码如下:

  View Code

  using System;

  using System.Collections;

  using System.IO;

  using System.Net;

  using System.Text;

  using System.Xml;

  using System.Xml.Serialization;

  namespace Bingosoft.RIA.Common

  {

  /// <summary>

  ///  利用WebRequest/WebResponse进行WebService调用的类

  /// </summary>

  public class WebServiceCaller

  {

  #region Tip:使用说明

  //webServices 应该支持Get和Post调用,在web.config应该增加以下代码

  //<webServices>

  //  <protocols>

  //    <add name="HttpGet"/>

  //    <add name="HttpPost"/>

  //  </protocols>

  //</webServices>

  //调用示例:

  //Hashtable ht = new Hashtable();  //Hashtable 为webservice所需要的参数集

  //ht.Add("str", "test");

  //ht.Add("b", "true");

  //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);

  //MessageBox.Show(xx.OuterXml);

  #endregion

  /// <summary>

  /// 需要WebService支持Post调用

  /// </summary>

  public static XmlDocument QueryPostWebService(String URL, String MethodName, Hashtable Pars)

  {

  HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);

  request.Method = "POST";

  request.ContentType = "application/x-www-form-urlencoded";

  SetWebRequest(request);

  byte[] data = EncodePars(Pars);

  WriteRequestData(request, data);

  return ReadXmlResponse(request.GetResponse());

  }

  /// <summary>

  /// 需要WebService支持Get调用

  /// </summary>

  public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)

  {

  HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));

  request.Method = "GET";

  request.ContentType = "application/x-www-form-urlencoded";

  SetWebRequest(request);

  return ReadXmlResponse(request.GetResponse());

  }

  /// <summary>

  /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值

  /// </summary>

  public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)

  {

  if (_xmlNamespaces.ContainsKey(URL))

  {

  return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());

  }

  else

  {

  return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));

  }

  }

  private static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)

  {

  _xmlNamespaces[URL] = XmlNs;//加入缓存,提高效率

  HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);

  request.Method = "POST";

  request.ContentType = "text/xml; charset=utf-8";

  request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");

  SetWebRequest(request);

  byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);

  WriteRequestData(request, data);

  XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();

  doc = ReadXmlResponse(request.GetResponse());

  XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);

  mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");

  String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;

  doc2.LoadXml("<root>" + RetXml + "</root>");

  AddDelaration(doc2);

  return doc2;

  }

  private static string GetNamespace(String URL)

  {

  HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");

  SetWebRequest(request);

  WebResponse response = request.GetResponse();

  StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

  XmlDocument doc = new XmlDocument();

  doc.LoadXml(sr.ReadToEnd());

  sr.Close();

  return doc.SelectSingleNode("//@targetNamespace").Value;

  }

  private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName)

  {

  XmlDocument doc = new XmlDocument();

  doc.LoadXml("<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\"></soap:Envelope>");

  AddDelaration(doc);

  //XmlElement soapBody = doc.createElement_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");

  XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");

  //XmlElement soapMethod = doc.createElement_x_x(MethodName);

  XmlElement soapMethod = doc.CreateElement(MethodName);

  soapMethod.SetAttribute("xmlns", XmlNs);

  foreach (string k in Pars.Keys)

  {

  //XmlElement soapPar = doc.createElement_x_x(k);

  XmlElement soapPar = doc.CreateElement(k);

  soapPar.InnerXml = ObjectToSoapXml(Pars[k]);

  soapMethod.AppendChild(soapPar);

  }

  soapBody.AppendChild(soapMethod);

  doc.DocumentElement.AppendChild(soapBody);

  return Encoding.UTF8.GetBytes(doc.OuterXml);

  }

  private static string ObjectToSoapXml(object o)

  {

  XmlSerializer mySerializer = new XmlSerializer(o.GetType());

  MemoryStream ms = new MemoryStream();

  mySerializer.Serialize(ms, o);

  XmlDocument doc = new XmlDocument();

  doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));

  if (doc.DocumentElement != null)

  {

  return doc.DocumentElement.InnerXml;

  }

  else

  {

  return o.ToString();

  }

  }

  /// <summary>

  /// 设置凭证与超时时间

  /// </summary>

  /// <param name="request"></param>

  private static void SetWebRequest(HttpWebRequest request)

  {

  request.Credentials = CredentialCache.DefaultCredentials;

  request.Timeout = 10000;

  }

  private static void WriteRequestData(HttpWebRequest request, byte[] data)

  {

  request.ContentLength = data.Length;

  Stream writer = request.GetRequestStream();

  writer.Write(data, 0, data.Length);

  writer.Close();

  }

  private static byte[] EncodePars(Hashtable Pars)

  {

  return Encoding.UTF8.GetBytes(ParsToString(Pars));

  }

  private static String ParsToString(Hashtable Pars)

  {

  StringBuilder sb = new StringBuilder();

  foreach (string k in Pars.Keys)

  {

  if (sb.Length > 0)

  {

  sb.Append("&");

  }

  //sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString()));

  }

  return sb.ToString();

  }

  private static XmlDocument ReadXmlResponse(WebResponse response)

  {

  StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

  String retXml = sr.ReadToEnd();

  sr.Close();

  XmlDocument doc = new XmlDocument();

  doc.LoadXml(retXml);

  return doc;

  }

  private static void AddDelaration(XmlDocument doc)

  {

  XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);

  doc.InsertBefore(decl, doc.DocumentElement);

  }

  private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace,避免重复调用GetNamespace

  }

  }