WebServiceHelper类

01	using System;

02	using System.Collections.Generic;

03	using System.Text;

04

05	using System.IO;

06	using System.Configuration;

07	using System.CodeDom;

08	using System.CodeDom.Compiler;

09	using System.Net;

10	using System.Web.Services;

11	using System.Web.Services.Description;

12	using Microsoft.CSharp;

13

14	namespace InvokeWebService

15

{

16	public static class WebServiceHelper

17

{

18	/// <summary>

19	/// 动态调用WebService

20	/// </summary>

21	/// <param name="url">WebService地址</param>

22	/// <param name="methodname">方法名(模块名)</param>

23	/// <param name="args">参数列表</param>

24	/// <returns>object</returns>

25	public static object InvokeWebService(string url, string methodname, object[] args)

26

{

27	return InvokeWebService(url, null, methodname, args);

28

}

29	/// <summary>

30	/// 动态调用WebService

31	/// </summary>

32	/// <param name="url">WebService地址</param>

33	/// <param name="classname">类名</param>

34	/// <param name="methodname">方法名(模块名)</param>

35	/// <param name="args">参数列表</param>

36	/// <returns>object</returns>

37	public static object InvokeWebService(string url, string classname, string methodname, object[] args)

38

{

39	string @namespace = "ServiceBase.WebService.DynamicWebLoad";

40	if (classname == null || classname == "")

41

{

42	classname = WebServiceHelper.GetClassName(url);

43

}

44	//获取服务描述语言(WSDL)

45	WebClient wc = new WebClient();

46	Stream stream = wc.OpenRead(url + "?WSDL");

47	ServiceDescription sd = ServiceDescription.Read(stream);

48	ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();

49	sdi.AddServiceDescription(sd, "", "");

50	CodeNamespace cn = new CodeNamespace(@namespace);

51	//生成客户端代理类代码

52	CodeCompileUnit ccu = new CodeCompileUnit();

53	ccu.Namespaces.Add(cn);

54	sdi.Import(cn, ccu);

55	CSharpCodeProvider csc = new CSharpCodeProvider();

56	ICodeCompiler icc = csc.CreateCompiler();

57	//设定编译器的参数

58	CompilerParameters cplist = new CompilerParameters();

59	cplist.GenerateExecutable = false;

60	cplist.GenerateInMemory = true;

61	cplist.ReferencedAssemblies.Add("System.dll");

62	cplist.ReferencedAssemblies.Add("System.XML.dll");

63	cplist.ReferencedAssemblies.Add("System.Web.Services.dll");

64	cplist.ReferencedAssemblies.Add("System.Data.dll");

65

//编译代理类

66	CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);

67	if (true == cr.Errors.HasErrors)

68

{

69	System.Text.StringBuilder sb = new StringBuilder();

70	foreach (CompilerError ce in cr.Errors)

71

{

72	sb.Append(ce.ToString());

73	sb.Append(System.Environment.NewLine);

74

}

75	throw new Exception(sb.ToString());

76

}

77

78	//生成代理实例,并调用方法

79	System.Reflection.Assembly assembly = cr.CompiledAssembly;

80	Type t = assembly.GetType(@namespace + "." + classname, true, true);

81	object obj = Activator.CreateInstance(t);

82	System.Reflection.MethodInfo mi = t.GetMethod(methodname);

83	return mi.Invoke(obj, args);

84

85

}

86

87	private static string GetClassName(string url)

88

{

89	string[] parts = url.Split('/');

90	string[] pps = parts[parts.Length - 1].Split('.');

91	return pps[0];

92

}

93

94

}

95

}