问题 连接字符串不能与MySQL一起使用

我正在创造一个 REST API 运用 MySQL DB 在 visual studio 2015 in asp.net mvc 4.5。我已经完成了运行API所需的每一步 MySQL，但我得到了这个例外。

{“消息”：“发生了错误。”，“ExceptionMessage”：“初始化字符串的格式不符合从索引121开始的规范。“，”ExceptionType“：”System.ArgumentException“，”StackTrace“：”at System.Data.Common.DbConnectionOptions.GetKeyValuePair（String connectionString，Int32 currentPosition，StringBuilder buffer，Boolean useOdbcRules，String＆keyname，String＆keyvalue）\ r \ n在System.Data.Common.DbConnectionOptions.ParseInternal（Hashtable parsetable，String connectionString，Boolean buildChain，Hashtable synonyms，Boolean firstKey）\ r \ n在System.Data.Common.DbConnectionOptions..ctor（String connectionString，Hashtable synonyms definitions，Boolean useOdbcRules） ）\ r \ n at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString（String value）\ r \ n at MySql.Data.MySqlClient.MySqlConnectionStringBuilder..ctor（String connStr）\ r \ n at MySql.Data.MySqlClient.MySqlConnection System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.b__18中的.set_ConnectionString（String value）\ r \ n（DbConnection t，DbConnectionPropertyInterceptionContext1 c)\r\n at System.Data.Entity.Infrastructure.Interception.InternalDispatcher1.Dispatch [TTarget，TInterceptionContext]（TTarget target，Action2 operation, TInterceptionContext interceptionContext, Action3执行，动作3 executed)\r\n at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.SetConnectionString(DbConnection connection, DbConnectionPropertyInterceptionContext1 interceptionContext）\ r \ n at System.Data.Entity.Internal.LazyInternalConnection.InitializeFromConnectionStringSetting（ConnectionStringSettings appConfigConnection）\ r \ n在System.Data.Entity.Internal.LazyInternalConnection.TryInitializeFromAppConfig（String name，AppConfig config）\ r \ n在System.Data.Entity.Interial.Conit上的System.Data.Entity.Internal.LazyInternalConnection.Initialize（）\ r \ n，在System.Data.Entity.Inter.RazyInternalContext.InitializeContext（）中的System.Data.Entity.Internal.LazyInternalConnection.CreateObjectContextFromConnectionModel（）\ r \ n \ r \ n在System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType（Type entityType）\ r \ n在System.Data.Entity.Internal.Linq.InternalSet中1.Initialize()\r\n at System.Data.Entity.Internal.Linq.InternalSet1.GetEnumerator（）\ r \ n在System.Data.Entity.Infrastructure.DbQuery1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()\r\n at System.Collections.Generic.List1..ctor（IEnumerable的1 collection)\r\n at System.Linq.Enumerable.ToList[TSource](IEnumerable1源代码）\ r \ n在D：\ Work \ DOT NET API \ RestWithMySQL \ RestWithMySQL \ Controllers \ ProductsController.cs中的RestWithMySQL.Controllers.ProductsController.Get（）：第19行“}

我认为我的连接字符串有问题。我搜索过它但找不到确切的解决方案。

<connectionStrings>
    <!--<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\aspnet-RestWithMySQL-20170911031521.mdf;Initial Catalog=aspnet-RestWithMySQL-20170911031521;Integrated Security=True" providerName="System.Data.SqlClient" />-->
    <add name="ProductEntities" connectionString="metadata=res://*/ProductsModel.csdl|res://*/ProductsModel.ssdl|res://*/ProductsModel.msl;provider=MySql.Data.MySqlClient;provider connection string=&quot; server=localhost;user id=root;database=accurate_dev;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework" providerName="MySql.Data.MySqlClient"/>
    <!--<remove name="LocalMySqlServer" /><add name="LocalMySqlServer" connectionString="" providerName="MySql.Data.MySqlClient" />-->
</connectionStrings>

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