WebServiceHelper

WebServiceHelper2

  1 using System;
  2 
  3 using System.Collections.Generic;
  4 
  5 using System.Web;
  6 
  7 using System.Net;
  8 
  9 using System.Web.Services.Description;
 10 
 11 using System.Text;
 12 
 13 using System.IO;
 14 
 15 using System.CodeDom;
 16 
 17 using Microsoft.CSharp;
 18 
 19 using System.CodeDom.Compiler;
 20 
 21 /// <summary>
 22 
 23 ///WebServiceHelper 的摘要说明
 24 
 25 /// </summary>
 26 
 27 public class WebServiceHelper
 28 
 29 {
 30 
 31      public WebServiceHelper()
 32 
 33      {
 34 
 35          //
 36 
 37          //TODO: 在此处添加构造函数逻辑
 38 
 39          //
 40 
 41      }
 42 
 43     #region InvokeWebService
 44 
 45     //动态调用web服务
 46 
 47     public static object InvokeWebService(string url, string methodname, object[] args)
 48 
 49     {
 50 
 51         return WebServiceHelper.InvokeWebService(url, null, methodname, args);
 52 
 53     }
 54 
 55  
 56 
 57     public static object InvokeWebService(string url, string classname, string methodname, object[] args)
 58 
 59     {
 60 
 61         string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
 62 
 63         if ((classname == null) || (classname == ""))
 64 
 65         {
 66 
 67             classname = WebServiceHelper.GetWsClassName(url);
 68 
 69         }
 70 
 71  
 72 
 73         try
 74 
 75         {
 76 
 77             //获取WSDL
 78 
 79             WebClient wc = new WebClient();
 80 
 81             Stream stream = wc.OpenRead(url + "?WSDL");
 82 
 83             ServiceDescription sd = ServiceDescription.Read(stream);
 84 
 85             ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
 86 
 87             sdi.AddServiceDescription(sd, "", "");
 88 
 89             CodeNamespace cn = new CodeNamespace(@namespace);
 90 
 91  
 92 
 93             //生成客户端代理类代码
 94 
 95             CodeCompileUnit ccu = new CodeCompileUnit();
 96 
 97             ccu.Namespaces.Add(cn);
 98 
 99             sdi.Import(cn, ccu);
100 
101             CSharpCodeProvider csc = new CSharpCodeProvider();
102 
103             ICodeCompiler icc = csc.CreateCompiler();
104 
105  
106 
107             //设定编译参数
108 
109             CompilerParameters cplist = new CompilerParameters();
110 
111             cplist.GenerateExecutable = false;
112 
113             cplist.GenerateInMemory = true;
114 
115             cplist.ReferencedAssemblies.Add("System.dll");
116 
117             cplist.ReferencedAssemblies.Add("System.XML.dll");
118 
119             cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
120 
121             cplist.ReferencedAssemblies.Add("System.Data.dll");
122 
123  
124 
125             //编译代理类
126 
127             CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
128 
129             if (true == cr.Errors.HasErrors)
130 
131             {
132 
133                 System.Text.StringBuilder sb = new System.Text.StringBuilder();
134 
135                 foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
136 
137                 {
138 
139                     sb.Append(ce.ToString());
140 
141                     sb.Append(System.Environment.NewLine);
142 
143                 }
144 
145                 throw new Exception(sb.ToString());
146 
147             }
148 
149  
150 
151             //生成代理实例，并调用方法
152 
153             System.Reflection.Assembly assembly = cr.CompiledAssembly;
154 
155             Type t = assembly.GetType(@namespace + "." + classname, true, true);
156 
157             object obj = Activator.CreateInstance(t);
158 
159             System.Reflection.MethodInfo mi = t.GetMethod(methodname);
160 
161  
162 
163             return mi.Invoke(obj, args);
164 
165         }
166 
167         catch (Exception ex)
168 
169         {
170 
171             throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
172 
173         }
174 
175     }
176 
177  
178 
179     private static string GetWsClassName(string wsUrl)
180 
181     {
182 
183         string[] parts = wsUrl.Split('/');
184 
185         string[] pps = parts[parts.Length - 1].Split('.');
186 
187  
188 
189         return pps[0];
190 
191     }
192 
193     #endregion
194 
195 }

调用

string url = "http://www.webservicex.net/globalweather.asmx" ;   
string[] args = new string[2] ;   
args[0] = "Hangzhou";   
args[1] = "China" ;   
object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;   
DataSet DSRe=(DataSet)result;