华域联盟 .Net 深入.net调用webservice的总结分析

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

    }

}

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作者: sterben

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