Question

我已将我的应用程序从MVC 1更新为MVC 2.之后，一些页面抛出PathTooLongException：

[PathTooLongException: The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.]
   System.IO.Path.SafeSetStackPointerValue(Char* buffer, Int32 index, Char value) +7493057
   System.IO.Path.NormalizePathFast(String path, Boolean fullCheck) +387
   System.IO.Path.NormalizePath(String path, Boolean fullCheck) +36
   System.IO.Path.GetFullPathInternal(String path) +21
   System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) +73
   System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) +278
   System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) +87
   System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String path) +65
   System.Web.InternalSecurityPermissions.PathDiscovery(String path) +29
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +146
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath) +37
   System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +43
   System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +28
   System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +22
   System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext) +284
   System.Web.Mvc.WebFormView.RenderViewPage(ViewContext context, ViewPage page) +82
   System.Web.Mvc.WebFormView.Render(ViewContext viewContext, TextWriter writer) +85
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +267
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +10
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +320
   System.Web.Mvc.Controller.ExecuteCore() +104
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +36
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +34
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +53
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +30
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8678910
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

我知道ASP.NET中260-character-url-lenght的问题，但在更新到ASP.NET MVC 2.0之前我的应用程序运行正常！

此问题不仅发生在本地，也发生在远程主机上

我比较RenderView方法实现。

MVC 1：

public virtual void RenderView(ViewContext viewContext) {
    ViewContext = viewContext;
    InitHelpers();
    // Tracing requires Page IDs to be unique.
    ID = Guid.NewGuid().ToString();
    ProcessRequest(HttpContext.Current);
}

MVC 2：

public virtual void RenderView(ViewContext viewContext) {
    ViewContext = viewContext;
    InitHelpers();

    bool needServerExecute = false;

    SwitchWriter switchWriter = viewContext.HttpContext.Response.Output as SwitchWriter;
    if (switchWriter == null) {
        switchWriter = new SwitchWriter();
        needServerExecute = true;
    }

    using (switchWriter.Scope(viewContext.Writer)) {
        if (needServerExecute) {
            // It's safe to reset the _nextId within a Server.Execute() since it pushes a new TraceContext onto
            // the stack, so there won't be an ID conflict.
            int originalNextId = _nextId;
            try {
                _nextId = 0;
                viewContext.HttpContext.Server.Execute(HttpHandlerUtil.WrapForServerExecute(this), switchWriter, true /* preserveForm */);
            }
            finally {
                // Restore the original _nextId in case this isn't actually the outermost view, since resetting
                // the _nextId may now cause trace ID conflicts in the outer view.
                _nextId = originalNextId;
            }
        }
        else {
            ProcessRequest(HttpContext.Current);
        }
    }
}

Answer 1

这更像是ASP.NET 4.0的默认限制，而不是ASP.NET MVC 1.0到2.0的迁移问题。在 web.config 中尝试increasing this limit：

<httpRuntime maxUrlLength="1000" relaxedUrlToFileSystemMapping="true" />

Answer 2

问题解决了。它是由Spring.NET引起的。 WebApplicationContext可以正常使用ASP.NET MVC 1.0。但是夫妻WebApplicationContext + ASP.NET MVC 2.0会导致PathTooLongException。现在我只需切换到XmlApplicationContext，所有页面都可以无错误地呈现。

从ASP.NET MVC 1迁移到ASP.NET MVC 2后的PathTooLongException

2 个答案: