/// <summary>
/// 动态调用WebService
/// </summary>
/// <param name="url">WebService地址</param>
/// <param name="classname">类名</param>
/// <param name="methodname">方法名(模块名)</param>
/// <param name="args">参数列表</param>
/// <returns>object</returns>
public static object InvokeWebService(string url, string classname, string methodname, object[] args)
{
string @namespace = "ServiceBase.WebService.DynamicWebLoad";
if (classname == null || classname == "")
{
classname = WebServiceHelper.GetClassName(url);
}
//获取服务描述语言(WSDL)
WebClient wc = new WebClient();
Stream stream = wc.OpenRead(url + "?WSDL");
ServiceDescription sd = ServiceDescription.Read(stream);
ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
CodeNamespace cn = new CodeNamespace(@namespace);
//生成客户端代理类代码
CodeCompileUnit ccu = new CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
CSharpCodeProvider csc = new CSharpCodeProvider();
ICodeCompiler icc = csc.CreateCompiler();
//设定编译器的参数
CompilerParameters cplist = new CompilerParameters();
cplist.GenerateExecutable = false;
cplist.GenerateInMemory = true;
cplist.ReferencedAssemblies.Add("System.dll");
cplist.ReferencedAssemblies.Add("System.XML.dll");
cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
cplist.ReferencedAssemblies.Add("System.Data.dll");
//编译代理类
CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
if (true == cr.Errors.HasErrors)
{
System.Text.StringBuilder sb = new StringBuilder();
foreach (CompilerError ce in cr.Errors)
{
sb.Append(ce.ToString());
sb.Append(System.Environment.NewLine);
}
throw new Exception(sb.ToString());
}
//生成代理实例,并调用方法
Assembly assembly = cr.CompiledAssembly;
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
MethodInfo mi = t.GetMethod(methodname);
return(mi.Invoke(obj, args));
}
/// <summary>
/// 根据WebService的URL，生成一个本地的dll,并返回WebService的实例
/// 创建人：程媛媛 创建时间：2010-6-21
/// </summary>
/// <param name="url">WebService的UR</param>
/// <returns></returns>
public static object GetWebServiceInstance(string url)
{
string @namespace = "ServiceBase.WebService.DynamicWebLoad";
string classname = WebServiceHelper.GetClassName(url);
// 1. 使用 WebClient 下载 WSDL 信息。
WebClient web = new WebClient();
Stream stream = web.OpenRead(url + "?WSDL");
// 2. 创建和格式化 WSDL 文档。
ServiceDescription description = ServiceDescription.Read(stream);
// 3. 创建客户端代理代理类。
ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
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。
// 4. 使用 CodeDom 编译客户端代理类。
CodeNamespace nmspace = new CodeNamespace(@namespace); // 为代理类添加命名空间，缺省为全局空间。
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 = Application.StartupPath + "//DBMS_Service.dll"; // 可以指定你所需的任何文件名。
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
System.Text.StringBuilder sb = new StringBuilder();
foreach (CompilerError ce in result.Errors)
{
sb.Append(ce.ToString());
sb.Append(System.Environment.NewLine);
}
throw new Exception(sb.ToString());
}
//生成代理实例
System.Reflection.Assembly assembly = Assembly.Load("DBMS_Service");
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
return(obj);
}