在远程调用WebService时出现下面的情况:
这种情况一般是由于证书有问题时出现,如果在浏览器中打开是这种情况:
解决方法新建一个类,代码如下:
1 public static class CertificateTrust 2 { 3 4 public static void SetCertificatePolicy() 5 { 6 ServicePointManager.ServerCertificateValidationCallback 7 += RemoteCertificateValidate; 8 } 9 private static bool RemoteCertificateValidate( 10 object sender, X509Certificate cert, 11 X509Chain chain, SslPolicyErrors error) 12 { 13 14 System.Console.WriteLine("Warning, trust any certificate"); 15 return true; 16 } 17 }
在动态编译WebService的代码中调用上面的类就可以了,注意调用的位置,一定要在打开前调用,下面代码的红色部分
动态编译WebSerivce的代码如下:
1 public class WSHelper 2 { 3 /// < summary> 4 /// 动态调用web服务 5 /// < /summary> 6 /// < param name="url">WSDL服务地址< /param> 7 /// < param name="methodname">方法名< /param> 8 /// < param name="args">参数< /param> 9 /// < returns>< /returns> 10 public static object InvokeWebService(string url, string methodname, object[] args) 11 { 12 return WSHelper.InvokeWebService(url, null, methodname, args); 13 } 14 /// < summary> 15 /// 动态调用web服务 16 /// < /summary> 17 /// < param name="url">WSDL服务地址< /param> 18 /// < param name="classname">类名< /param> 19 /// < param name="methodname">方法名< /param> 20 /// < param name="args">参数< /param> 21 /// < returns>< /returns> 22 public static object InvokeWebService(string url, string classname, string methodname, object[] args) 23 { 24 string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; 25 if ((classname == null) || (classname == "")) 26 { 27 classname = WSHelper.GetWsClassName(url); 28 } 29 try 30 { //获取WSDL 31 WebClient wc = new WebClient(); 32 33 CertificateTrust.SetCertificatePolicy();//证书出现问题时调用此代码 34 35 Stream stream = wc.OpenRead(url + "?WSDL"); 36 ServiceDescription sd = ServiceDescription.Read(stream); 37 ServiceDescriptionImporter sdi = new ServiceDescriptionImporter(); 38 sdi.AddServiceDescription(sd, "", ""); 39 CodeNamespace cn = new CodeNamespace(@namespace); 40 //生成客户端代理类代码 41 CodeCompileUnit ccu = new CodeCompileUnit(); 42 ccu.Namespaces.Add(cn); 43 sdi.Import(cn, ccu); 44 CSharpCodeProvider icc = new CSharpCodeProvider(); 45 //设定编译参数添加所需要的DLL文件 46 CompilerParameters cplist = new CompilerParameters(); 47 cplist.GenerateExecutable = false; 48 cplist.GenerateInMemory = true; 49 cplist.ReferencedAssemblies.Add("System.dll"); 50 cplist.ReferencedAssemblies.Add("System.XML.dll"); 51 cplist.ReferencedAssemblies.Add("System.Web.Services.dll"); 52 cplist.ReferencedAssemblies.Add("System.Data.dll"); 53 //编译代理类 54 CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu); 55 if (true == cr.Errors.HasErrors) 56 { 57 System.Text.StringBuilder sb = new System.Text.StringBuilder(); 58 foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors) 59 { 60 sb.Append(ce.ToString()); 61 sb.Append(System.Environment.NewLine); 62 } 63 throw new Exception(sb.ToString()); 64 } 65 //生成代理实例,并调用方法 66 System.Reflection.Assembly assembly = cr.CompiledAssembly; 67 Type t = assembly.GetType(@namespace + "." + classname, true, true); 68 object obj = Activator.CreateInstance(t); 69 System.Reflection.MethodInfo mi = t.GetMethod(methodname); 70 return mi.Invoke(obj, args); 71 } 72 catch (Exception ex) 73 { 74 throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace)); 75 } 76 } 77 private static string GetWsClassName(string wsUrl) 78 { 79 string[] parts = wsUrl.Split('/'); 80 string[] pps = parts[parts.Length - 1].Split('.'); 81 return pps[0]; 82 } 83 }
调用动态编译的代码如下:
1 string url = "http://localhost:81/WebServiceLogin.asmx"; 2 string[] args = new string[2]; 3 args[0] = "参数1"; 4 args[1] = "参数2"; 5 object result = WSHelper.InvokeWebService(url, "HelloWorld", args);
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