C# 调用Webservice并传递序列化对象

原文:C# 调用Webservice并传递序列化对象

C#动态调用WebService注意要点

1.动态调用的url后面注意一定要加上?WSDL

  例如:string _url = "http://服务器IP:端口/CITI_TRANS_WH/wsTransData_InWH.asmx?WSDL";

 

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2.WebService中传递List泛型对象

 [WebMethod]

 public List<TestModel> TestTransDataByClass(int _max)

 

 注意TestModel必须是可以序列化的类

 

 //必须可序列化

 [Serializable]

 public class TestModel

 {

     public int No

     {

         get;

         set;

     }

     public string Des

     {

         get;

         set;

     }

 }

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3.WebService中不能直接传递输出dictionary<string,object>这样的泛型对象,必须自定义一个类来输出,这个类同样也是可以序列化的

    [Serializable]

    public class MyDictionary

    {

        public List<TestModel> Table1

        {

            get;

            set;

        }

public List<TestModel2> Table2

        {

            get;

            set;

        }

    }

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4.动态调用WebService的类封装

    public static class InvokeWebServiceDynamic

    {

        /// <summary>

        /// 动态调用WebService

        /// </summary>

        /// <param name="_url">web服务url地址</param>

        /// <param name="_methodName">web服务中的方法</param>

        /// <param name="_params">传递给方法的参数</param>

        /// <returns></returns>

        public static object InvokeWebMethod(string _url ,string _methodName,

                                params object[] _params)

        {

            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

            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";      //这个命名空间可以自己取

            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.wsTransData_InWH"); //前面的命名空间.类名,类必须是webservice中定义的

            object o = Activator.CreateInstance(t);

            MethodInfo method = t.GetMethod(_methodName);//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

            object item = method.Invoke(o, _params); //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

            //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();

            return item;

        }

    } 

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5.通过反射提取web方法返回的自定义类数据

  说明:

  <1>.WebService方法TestTransDataByDic返回自定义的MyDictionary对象

  <2>.它包含两个属性table1,table2

  <3>.类定义代码如下

   [Serializable]

   public class MyDictionary

   {

     public List<TestModel> Table1

     {

         get;

         set;

     }

   

     public List<TestModel2> Table2

     {

         get;

         set;

     }

   }

<4>.客户端调用代码

private void InvokeDic_Click(object sender, EventArgs e)

        {

            //要注意加?WSDL

            //string _url = "http://localhost:58764/wsTransData_InWH.asmx?WSDL";

            int _count = int.Parse(txtCount.Text);

            object o = InvokeWebServiceDynamic.InvokeWebMethod(_url, "TestTransDataByDic",

                            new object[] { _count });

            PropertyInfo _propertyTable1 = o.GetType().GetProperty("Table1");

            PropertyInfo _propertyTable2 = o.GetType().GetProperty("Table2");

//读取Table1属性中的数据

            object[] _table1Items = (object[])_propertyTable1.GetValue(o, null);

            if(_table1Items.Length>0)

            {

                lstData1.Visible = false;

                lstData1.Items.Clear();

        //反射出对象TestModel的属性

                PropertyInfo _propertyNo = _table1Items[0].GetType().GetProperty("No");

                PropertyInfo _propertyDes = _table1Items[0].GetType().GetProperty("Des");

                for (int i = 0; i < _table1Items.Length; i++)

                {

                  //根据属性取值

                    string _no = _propertyNo.GetValue(_table1Items[i], null).ToString();

                    string _des = _propertyDes.GetValue(_table1Items[i], null).ToString();

                    string _format = string.Format("第{0}条:{1}", _no, _des);

                    lstData1.Items.Add(_format);                   

                }

lstData1.Visible = true;

            }

//读取Table2属性中的数据

            object[] _table2Items = (object[])_propertyTable2.GetValue(o, null);

            if (_table2Items.Length > 0)

            {

                lstData2.Visible = false;

                lstData2.Items.Clear();

        //反射出对象TestModel2的属性

                PropertyInfo _propertyMyFNo = _table2Items[0].GetType().GetProperty("MyFNo");

                PropertyInfo _propertyMyFDes = _table2Items[0].GetType().GetProperty("MyFDes");

for (int i = 0; i < _table1Items.Length; i++)

                {

                  //根据属性取值

                    string _no = _propertyMyFNo.GetValue(_table2Items[i], null).ToString();

                    string _des = _propertyMyFDes.GetValue(_table2Items[i], null).ToString();

                    string _format = string.Format("第{0}条:{1}", _no, _des);

                    lstData2.Items.Add(_format);

                }

lstData2.Visible = true;

            }

            MessageBox.Show("OK");

        }

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6.客户端传递序列化对象给webserice方法

/// <summary>

        ///

        /// </summary>

        /// <param name="_dicGet">是一个客户端传过来的序列化的对象</param>

        /// <returns></returns>

        [WebMethod]

        public string TestInsertData(byte[] _dicGet)

        {

            //反序列化对象

            object _dicGetOK = SqlHelper.DeserializeObject(_dicGet);

            return "ok";

        }

注意:

<1>.创建一个.NET类库，把要传输的对象做成一个结构或类放在类库（假设为ClassLib.dll）中。如：

<2>.然后在客户端程序和webservice项目中都引用ClassLib.dll

<3>.上面两步的目的是让客户端序列化的对象，在webservice服务端能正常反序列化，不会出现反序列化时找不到命名空间的问题

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7.修改webserivce最大传输的长度

<?xml version="1.0" encoding="utf-8"?>

<!--

  有关如何配置 ASP.NET 应用程序的详细消息，请访问

  http://go.microsoft.com/fwlink/?LinkId=169433

  -->

<configuration>

  <connectionStrings>

    <add name="ConStr" connectionString="$(ReplacableToken_ConStr-Web.config Connection String_0)"/>

  </connectionStrings>

    <system.web>

        <compilation debug="true" targetFramework="4.0" />

        <httpRuntime maxRequestLength="2147483647" />

    </system.web>

</configuration>

 8.修改webservice的超时时间

<?xml version="1.0" encoding="utf-8"?>





<!--

  有关如何配置 ASP.NET 应用程序的详细消息，请访问

  executionTimeout="120"  超时时间120秒

  maxRequestLength="2147483647" 最大请求长度

  http://go.microsoft.com/fwlink/?LinkId=169433

  -->





<configuration>

  <connectionStrings>

    <add name="ConStr" connectionString="Data Source=192.128.58.248;Initial catalog=Citibank_test;Uid=sa;pwd=kicpassword"/>

  </connectionStrings>

    <system.web>

        <compilation debug="true" targetFramework="4.0" />

        <httpRuntime maxRequestLength="2147483647" executionTimeout="240" />

    </system.web>





</configuration>

 9.序列化，反序列化方法

public static byte[] SerializeObject(object pObj)

        {

            if (pObj == null)

                return null;

            System.IO.MemoryStream memoryStream = new System.IO.MemoryStream();

            BinaryFormatter formatter = new BinaryFormatter();

            formatter.Serialize(memoryStream, pObj);

            memoryStream.Position = 0;

            byte[] read = new byte[memoryStream.Length];

            memoryStream.Read(read, 0, read.Length);

            memoryStream.Close();

            return read;

        }





        public static object DeserializeObject(byte[] pBytes)

        {

            object newOjb = null;

            if (pBytes == null)

            {

                return newOjb;

            }





            System.IO.MemoryStream memoryStream = new System.IO.MemoryStream(pBytes);

            memoryStream.Position = 0;

            BinaryFormatter formatter = new BinaryFormatter();

            newOjb = formatter.Deserialize(memoryStream);

            memoryStream.Close();





            return newOjb;

        }