一个webservice使用的问题

[zfb312]

我现在在搞一个跨系统工作流，至少包括3个系统，假设为a，b，c 3个系统。
由于系统设计原因，由b系统负责与a，c2个系统交互，而a，c2个系统不能直接交互。
我是这样做的，在每个系统上都有一个webservice方法，当a向b提交数据的时候，需要b同时向c提交数据，
并且需要同时成功，要么就同时失败。
请问各位大侠，有没有webservice控制事务的方法，或者解决思路。

[MMYY19668804MY521]

帮顶，学习下

[bojiansky]

帮顶，学习下！

[zfb312]

自己顶一下，沉了。。

[leonwan]

用分布式事务处理能行吗？

[leonwan]

在a向b提交数据的时候就做控制，如果有错误就回滚，不做b向c提交数据的操作

[zfb312]

分布式事务不支持webservice。。。

[-小蕾-]

Webservice控制事务没做过，帮顶，想学习。。。

[lester19872007]

     /// <summary>
        /// 动态调用web服务
        /// 
        /// 调用示例
        /// string url = "http://www.webservicex.net/globalweather.asmx";
        /// string[] args = new string[2];
        /// args[0] = "shenzhen";
        /// args[1] = "China";
        /// object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args);
        /// this.label_Result.Text = result.ToString();
        /// </summary>
        /// <param name="url"></param>
        /// <param name="methodname"></param>
        /// <param name="args"></param>
        /// <returns></returns>
        public static object InvokeWebService(string url, string methodname, object[] args)
        {
            return WebServiceHelper.InvokeWebService(url, null, methodname, args);
        }

        public static object InvokeWebService(string url, string classname, string methodname, object[] args)
        {
            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
            if ((classname == null) || (classname == ""))
            {
                classname = WebServiceHelper.GetWsClassName(url);
            }

            try
            {
                //获取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 System.Text.StringBuilder();
                    foreach (System.CodeDom.Compiler.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
                System.Reflection.Assembly assembly = cr.CompiledAssembly;
                Type t = assembly.GetType(@namespace + "." + classname, true, true);
                object obj = Activator.CreateInstance(t);
                System.Reflection.MethodInfo mi = t.GetMethod(methodname);

                return mi.Invoke(obj, args);
            }
            catch (Exception ex)
            {
                throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
            }
        }

        private static string GetWsClassName(string wsUrl)
        {
            string[] parts = wsUrl.Split('/');
            string[] pps = parts[parts.Length - 1].Split('.');

            return pps[0];
        }
        #endregion

        public static string GetRealUrl(string pUrl)
        {
            string appPath = "/"; 
            if (HttpContext.Current.Request.ApplicationPath != appPath)
            {
                appPath = HttpContext.Current.Request.ApplicationPath + appPath;
            }
            string bootUrl = HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority;
            if (!string.IsNullOrEmpty(pUrl) && pUrl.Substring(0, 1) == "/")
            {
                pUrl = pUrl.Substring(1);
            }
            string fullUrl = bootUrl + appPath + pUrl;
            return fullUrl;
        }

动态调用 WS。。。

[-深白色-]

这个恐怕得楼主自己在b上控制了，比如，a向b提交数据的时候，b先向c提交c写入成功后，b再写入，如果b，c都写入成功，则成功返回，如果有一个不成功，则回滚。这个回滚，得要c接口支持，比如：
c写入成功，b写入失败，则b要向c接口请求删除数据。删除后。b返回给a失败的结果，让a再次尝试。

不过这样还是有个问题，就是b向c接口请求删除数据，这个请求也可能失败。。。。。。。，这个要看楼主的程序是不是能容忍这样的失败。

[leonwan]

/// <summary>
/// 动态调用web服务
///
/// 调用示例
/// string url = "http://www.webservicex.net/globalweather.asmx";
/// string[] args = new string[2];
/// args[0] = "shenzhen";
/// args[1] = "China";
/// object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args);
/// this.label_Result.Text = result.ToString();
/// </summary>
/// <param name="url"></param>
/// <param name="methodname"></param>
/// <param name="args"></param>
/// <returns></returns>
public static object InvokeWebService(string url, string methodname, object[] args)
{
return WebServiceHelper.InvokeWebService(url, null, methodname, args);
}

public static object InvokeWebService(string url, string classname, string methodname, object[] args)
{
string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
if ((classname == null) || (classname == ""))
{
classname = WebServiceHelper.GetWsClassName(url);
}

try
{
//获取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 System.Text.StringBuilder();
foreach (System.CodeDom.Compiler.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
System.Reflection.Assembly assembly = cr.CompiledAssembly;
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
System.Reflection.MethodInfo mi = t.GetMethod(methodname);

return mi.Invoke(obj, args);
}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}
}

private static string GetWsClassName(string wsUrl)
{
string[] parts = wsUrl.Split('/');
string[] pps = parts[parts.Length - 1].Split('.');

return pps[0];
}
#endregion

public static string GetRealUrl(string pUrl)
{
string appPath = "/";
if (HttpContext.Current.Request.ApplicationPath != appPath)
{
appPath = HttpContext.Current.Request.ApplicationPath + appPath;
}
string bootUrl = HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority;
if (!string.IsNullOrEmpty(pUrl) && pUrl.Substring(0, 1) == "/")
{
pUrl = pUrl.Substring(1);
}
string fullUrl = bootUrl + appPath + pUrl;
return fullUrl;
}

[zfb312]

还没有解决方案。。谢谢各位了