Question

我正在尝试将网站部署到 Azure Web Apps 。 IDE： Visual Studio 2015 / U3 。

网站： ASP.NET MVC 4 网站。我尝试使用发布将网站部署到Azure Web App。

浏览器出错：

＆＃39; /＆＃39;中的服务器错误应用

操作失败，因为名称为“IX_OwnerId＆＃39;”的索引或统计信息已存在于表格＆＃39; dbo.Auctions＆＃39;。

描述：在执行当前Web请求期间发生了未处理的异常。请查看堆栈跟踪了解更多信息   有关错误的信息以及它在代码中的起源。

异常详细信息： System.Data.SqlClient.SqlException：操作失败，因为名称为＆＃39; IX_OwnerId＆＃39;的索引或统计信息   已存在于表格＆＃39; dbo.Auctions＆＃39;。

来源错误：

执行期间生成了未处理的异常   当前的网络请求。有关的来源和位置的信息   可以使用下面的异常堆栈跟踪来识别异常。

堆栈追踪：

[SqlException (0x80131904): The operation failed because an index or statistics with name 'IX_OwnerId' already exists on table 'dbo.Auctions'.]
   System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +2442634
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5766568
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +285
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +4162
   System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite) +948
   System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +286
   System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +286
   System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<NonQuery>b__0(DbCommand t, DbCommandInterceptionContext`1 c) +10
   System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch(TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) +72
   System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext) +356
   System.Data.Entity.Internal.InterceptableDbCommand.ExecuteNonQuery() +103
   System.Data.Entity.Migrations.DbMigrator.ExecuteSql(MigrationStatement migrationStatement, DbConnection connection, DbTransaction transaction, DbInterceptionContext interceptionContext) +109
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection, DbTransaction transaction, DbInterceptionContext interceptionContext) +83
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsWithinTransaction(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterceptionContext interceptionContext) +65
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsWithinNewTransaction(IEnumerable`1 migrationStatements, DbConnection connection, DbInterceptionContext interceptionContext) +155
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection, DbInterceptionContext interceptionContext) +346
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection) +509
   System.Data.Entity.Migrations.<>c__DisplayClass30.<ExecuteStatements>b__2e() +19
   System.Data.Entity.SqlServer.<>c__DisplayClass1.<Execute>b__0() +10
   System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func`1 operation) +189
   System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation) +78
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction) +194
   System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements) +7
   System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, VersionedModel targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto) +828
   System.Data.Entity.Migrations.DbMigrator.AutoMigrate(String migrationId, VersionedModel sourceModel, VersionedModel targetModel, Boolean downgrading) +559
   System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId) +403
   System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration) +445
   System.Data.Entity.Migrations.<>c__DisplayClassc.<Update>b__b() +13
   System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase) +422
   System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration) +78
   System.Data.Entity.MigrateDatabaseToLatestVersion`2.InitializeDatabase(TContext context) +108
   System.Data.Entity.Internal.<>c__DisplayClassf`1.<CreateInitializationAction>b__e() +76
   System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) +60
   System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() +357
   System.Data.Entity.Internal.LazyInternalContext.<InitializeDatabase>b__4(InternalContext c) +7
   System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input) +110
   System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action) +198
   System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase() +73
   System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) +28
   System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() +53
   System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator() +15
   System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator() +53
   System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +146
   System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector) +89
   OnlineAuction.Controllers.HomeController.Index(Int32 CategoryId, String SearchKeyword) in C:\Users\Chico\Desktop\DIPLOMA PROJECT\DIPLOMA PROJECT\Проект\задав вопрос о оунерАди\delete — копия\OnlineDonors\Controllers\HomeController.cs:26
   lambda_method(Closure , ControllerBase , Object[] ) +146
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +182
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.Async.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41() +28
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
   System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +58
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +225
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +24
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +99
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +16
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +16
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +16
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9765121
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

我查看了这篇文章： Unhandled Exception after Upgrading to Entity Framework 4.3.1

我尝试删除Auctions表上的重复项。这是我在Auctions类的Users方法中创建的Up()和InitialCreate表：

public partial class InitialCreate : DbMigration
{
    public override void Up()
    {
        CreateTable(
            "dbo.Auctions",
            c => new
                {
                    Id = c.Long(nullable: false, identity: true),
                    Title = c.String(nullable: false, maxLength: 160),
                    Description = c.String(nullable: false),
                    CurrentPrice = c.Double(nullable: false),
                    StartTime = c.DateTime(nullable: false),
                    EndTime = c.DateTime(nullable: false),
                    OwnerId = c.Int(nullable: false),
                    WinningBidId = c.Int(),
                    CategoryId = c.Int(nullable: false),
                })
            .PrimaryKey(t => t.Id)
            .ForeignKey("dbo.Users", t => t.OwnerId)
            .ForeignKey("dbo.Bids", t => t.WinningBidId)
            .ForeignKey("dbo.Categories", t => t.CategoryId)
            .Index(t => t.OwnerId)
            .Index(t => t.WinningBidId)
            .Index(t => t.CategoryId);                   
     }
 }

起初我删除了这一行：

 .ForeignKey("dbo.Users", t => t.OwnerId)

并重新部署该网站。仍然是同样的错误。

然后我从.Index(t => t.OwnerId)表创建中删除了Auctions。发生同样的错误。

其他信息：

在 Global.asax 的Application_Start()方法中，我有这一行：

 System.Data.Entity.Database.SetInitializer(new System.Data.Entity.MigrateDatabaseToLatestVersion<AuctionDataContext, Configuration>());

Web.config 的<configSections>：

<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

我的初始化位于Configuration类：

   public class Configuration : DbMigrationsConfiguration<OnlineAuction.Models.Entities.AuctionDataContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
        }

        protected override void Seed(AuctionDataContext context)
        { 
            ***All my initializations go here 
        }
    }

问题：如何修复？

Answer 1

据我所知，ForeignKeyIndexConvention Code First约定可能导致为模型中任何外键的列创建索引。您可以尝试在DbContext.OnModelCreating方法中删除此约定。

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    //your code  

    //remove ForeignKeyIndexConvention  
    modelBuilder.Conventions.Remove<ForeignKeyIndexConvention>();
}

错误＆＃34;操作失败，因为表Y

1 个答案: