/// <summary>
/// 动态调用WebService
/// </summary>
/// <param name="request">WebService请求参数</param>
/// <returns>object</returns>
public static object InvokeWebService(this WebServiceRequest request)
{
var cr = request.GetCompilerResults();
if (cr == null)
{
return(null);
}
//生成代理实例,并调用方法
var assembly = cr.CompiledAssembly;
var t = assembly.GetType(request.NameSpace + "." + request.ClassName, true, true);
var obj = Activator.CreateInstance(t);
var mi = t.GetMethod(request.MethodName);
return(mi.Invoke(obj, request.Args));
}
private static CompilerResults GetCompilerResults(this WebServiceRequest request)
{
if (request == null)
{
return(null);
}
if (string.IsNullOrEmpty(request.ClassName))
{
request.ClassName = GetClassName(request.Url);
}
var strUrl = string.Format("{0}?wsdl", request.Url);
if (htWebService.ContainsKey(strUrl))
{
return(htWebService[strUrl]);
}
//获取服务描述语言(WSDL)
var wc = new WebClient();
var stream = wc.OpenRead(strUrl);
if (stream == null)
{
return(null);
}
var sd = ServiceDescription.Read(stream);
var sdi = new ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
var cn = new CodeNamespace(request.NameSpace);
//生成客户端代理类代码
var ccu = new CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
var csc = new CSharpCodeProvider();
var icc = csc.CreateCompiler();
//设定编译器的参数
var cplist = new CompilerParameters {
GenerateExecutable = false, 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
var cr = icc.CompileAssemblyFromDom(cplist, ccu);
if (cr.Errors.HasErrors)
{
var sb = new StringBuilder();
foreach (CompilerError ce in cr.Errors)
{
sb.Append(ce);
sb.Append(Environment.NewLine);
}
throw new Exception(sb.ToString());
}
htWebService.Add(strUrl, cr);
return(cr);
}