整理过后的代码
通过这个类可以将webservice提供的某个命名空间下的全部的类的实例
并可以通过invokemethod方法调用某个类的实例的方法
1
using System;2
using System.Collections.Generic;3
using System.Linq;4
using System.Web;5
using System.Xml;6
using System.Web.Services.Description;7
using System.CodeDom;8
using System.CodeDom.Compiler;9
10
namespace Ecommerce.Web.AppCode11
{12
public class DynamicService13
{14
private static string _url = string.Empty;15
16
public static string Url17
{18
get { return _url; }19
set { _url = value; }20
}21
22
private static string _nameSpace = string.Empty;23
24
/// <summary>25
/// Namespace of the classes26
/// </summary>27
public static string NameSpace28
{29
get { return _nameSpace; }30
set { _nameSpace = value; }31
}32
33
private static IList<string> _classNames = null;34
35
/// <summary>36
/// All classes's names37
/// </summary>38
public static IList<string> ClassNames39
{40
get { return _classNames; }41
set42
{43
IList<string> nameList = value;44
45
if (nameList == null || nameList.Count <= 0)46
throw new Exception("No class name is in the list, please check!");47
48
_classNames = nameList;49
}50
}51
52
private static IDictionary<string, object> classList = null;53
54
/// <summary>55
/// Get class's instances to use in webservice56
/// </summary>57
public static IDictionary<string, object> ClassList58
{59
get60
{61
IDictionary<string, Object> classNameObjList = new Dictionary<string, Object>();62
63
foreach (var item in _classNames)64
{65
object instance = InvokeWebservice(item);66
classNameObjList.Add(item, instance);67
}68
69
return classNameObjList;70
}71
}72
73
/// <summary>74
/// 根据指定的信息，调用远程WebService方法75
/// </summary>76
77
/// <param name="classname">欲调用的WebService的类名（不包括命名空间前缀）</param>78
/// <remarks>79
/// 如果调用失败，将会抛出Exception。请调用的时候，适当截获异常。80
/// 异常信息可能会发生在两个地方：81
/// 1、动态构造WebService的时候，CompileAssembly失败。82
/// 2、WebService本身执行失败。83
/// </remarks>84
/// <example>85
/// <code>86
/// object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx","Genersoft.Platform.Service.Workflow","Common","GetToolType",new object[]{"1"});87
/// </code>88
/// </example>89
public static object InvokeWebservice(string classname)90
{91
try92
{93
System.Net.WebClient wc = new System.Net.WebClient();94
System.IO.Stream stream = wc.OpenRead(_url + "?WSDL");95
System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);96
System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();97
sdi.AddServiceDescription(sd, "", "");98
System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(_nameSpace);99
System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();100
ccu.Namespaces.Add(cn);101
sdi.Import(cn, ccu);102
103
Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();104
System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();105
106
System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.CompilerParameters();107
cplist.GenerateExecutable = false;108
cplist.GenerateInMemory = true;109
cplist.ReferencedAssemblies.Add("System.dll");110
cplist.ReferencedAssemblies.Add("System.XML.dll");111
cplist.ReferencedAssemblies.Add("System.Web.Services.dll");112
cplist.ReferencedAssemblies.Add("System.Data.dll");113
114
System.CodeDom.Compiler.CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);115
if (true == cr.Errors.HasErrors)116
{117
System.Text.StringBuilder sb = new System.Text.StringBuilder();118
foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)119
{120
sb.Append(ce.ToString());121
sb.Append(System.Environment.NewLine);122
}123
throw new Exception(sb.ToString());124
}125
System.Reflection.Assembly assembly = cr.CompiledAssembly;126
Type t = assembly.GetType(_nameSpace + "." + classname, true, true);127
object obj = Activator.CreateInstance(t);128
129
return obj;130
}131
catch (Exception ex)132
{133
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));134
}135
}136
137
/// <summary>138
/// Invoke the method in this class by specifying the method name139
/// </summary>140
/// <param name="classInstance"></param>141
/// <param name="functionName"></param>142
/// <param name="args"></param>143
/// <returns></returns>144
public static object InvokeMethod(object classInstance, string functionName,object[] args)145
{146
System.Reflection.MethodInfo mi = classInstance.GetType().GetMethod(functionName);147
return mi.Invoke(classInstance, args);148
}149
}150
}151
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