问题
I keep getting a bad request error every time I run this line of code:
List<Account> accounts = await App.accountTable.Where(account => account.EmailAddress == email).ToListAsync();
Here is the error message:
A first chance exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.dll
Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException: The request could not be completed. (Bad Request)
at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient.<ThrowInvalidResponse>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient.<SendRequestAsync>d__1d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient.<RequestAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTable.<ReadAsync>d__b.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTable.<ReadAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.Query.MobileServiceTableQueryProvider.<Execute>d__8`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.Query.MobileServiceTableQueryProvider.<Execute>d__3`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTableQuery`1.<ToListAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at eventsphere.Utilities.ValidationUtility.<CheckEmailExistsError>d__2.MoveNext()
However I have another line which is basically the same and it works fine:
List<Account> accounts = await App.accountTable.Where(account => account.Username == username).ToListAsync();
I am literally clueless as to why one line would give me an error and the other wouldn't since all that has changed is the property of the Account table I am querying.
Account Table Structure: (Won't let me post an image because I haven't enough reputation)
CREATE TABLE [eventsphere].[Accounts] (
[Id] NVARCHAR (128) DEFAULT (newid()) NOT NULL,
[AccountId] INT IDENTITY (1, 1) NOT NULL,
[Username] NVARCHAR (MAX) NULL,
[EmailAddress] NVARCHAR (MAX) NULL,
[Password] NVARCHAR (MAX) NULL,
[IsBusiness] BIT NOT NULL,
[User_Id] NVARCHAR (128) NULL,
[Business_Id] NVARCHAR (128) NULL,
[Version] ROWVERSION NOT NULL,
[CreatedAt] DATETIMEOFFSET (7) DEFAULT (sysutcdatetime()) NOT NULL,
[UpdatedAt] DATETIMEOFFSET (7) NULL,
[Deleted] BIT NOT NULL,
CONSTRAINT [PK_eventsphere.Accounts] PRIMARY KEY NONCLUSTERED ([Id] ASC),
CONSTRAINT [FK_eventsphere.Accounts_eventsphere.Businesses_Business_Id] FOREIGN KEY ([Business_Id]) REFERENCES [eventsphere].[Businesses] ([Id]),
CONSTRAINT [FK_eventsphere.Accounts_eventsphere.Users_User_Id] FOREIGN KEY ([User_Id]) REFERENCES [eventsphere].[Users] ([Id])
);
Any input would be appreciated! Thanks in advance :)
回答1:
What does your client-side EmailAddress property look like? It is getting lowercased at some point -- do you have any attributes on it in your client model?
The reason that 'Username' and 'username' both work is because the server allows both upper-and lower-case with the first letter of properties. For example, 'emailAddress' should work.
回答2:
(Can't comment until I have 10 reputation so I'm posting this as an answer..)
Here is the query request that's generated and sent to the local copy of our database:
http://localhost:59737/tables/Account?$filter=(emailaddress%20eq%20%27email%40test.com%27)
which returns this object (I think the "message" property is all that's important):
{"message":"The query specified in the URI is not valid. Could not find a property named 'emailaddress' on type 'eventsphereService.DataObjects.Account'.","exceptionMessage":"Could not find a property named 'emailaddress' on type 'eventsphereService.DataObjects.Account'.","exceptionType":"Microsoft.Data.OData.ODataException","stackTrace":" at Microsoft.Data.OData.Query.EndPathBinder.GeneratePropertyAccessQueryForOpenType(EndPathToken endPathToken, SingleValueNode parentNode)\r\n at Microsoft.Data.OData.Query.EndPathBinder.BindEndPath(EndPathToken endPathToken, BindingState state)\r\n at Microsoft.Data.OData.Query.MetadataBinder.BindEndPath(EndPathToken endPathToken)\r\n at Microsoft.Data.OData.Query.MetadataBinder.Bind(QueryToken token)\r\n at Microsoft.Data.OData.Query.BinaryOperatorBinder.GetOperandFromToken(BinaryOperatorKind operatorKind, QueryToken queryToken)\r\n at Microsoft.Data.OData.Query.BinaryOperatorBinder.BindBinaryOperator(BinaryOperatorToken binaryOperatorToken)\r\n at Microsoft.Data.OData.Query.MetadataBinder.BindBinaryOperator(BinaryOperatorToken binaryOperatorToken)\r\n at Microsoft.Data.OData.Query.MetadataBinder.Bind(QueryToken token)\r\n at Microsoft.Data.OData.Query.FilterBinder.BindFilter(QueryToken filter)\r\n at Microsoft.Data.OData.Query.ODataUriParser.ParseFilterImplementation(String filter, IEdmType elementType, IEdmEntitySet entitySet)\r\n at System.Web.Http.OData.Query.FilterQueryOption.get_FilterClause()\r\n at System.Web.Http.OData.Query.Validators.FilterQueryValidator.Validate(FilterQueryOption filterQueryOption, ODataValidationSettings settings)\r\n at System.Web.Http.OData.Query.FilterQueryOption.Validate(ODataValidationSettings validationSettings)\r\n at System.Web.Http.OData.Query.Validators.ODataQueryValidator.Validate(ODataQueryOptions options, ODataValidationSettings validationSettings)\r\n at System.Web.Http.OData.Query.ODataQueryOptions.Validate(ODataValidationSettings validationSettings)\r\n at System.Web.Http.OData.EnableQueryAttribute.ValidateQuery(HttpRequestMessage request, ODataQueryOptions queryOptions)\r\n at System.Web.Http.OData.EnableQueryAttribute.ExecuteQuery(Object response, HttpRequestMessage request, HttpActionDescriptor actionDescriptor)\r\n at System.Web.Http.OData.EnableQueryAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)"}
however when modified (by us, in the browser) as follows:
http://localhost:59737/tables/Account?$filter=(EmailAddress%20eq%20%27email%40test.com%27)
it returns some data.
When querying the Username field both "Username" and "username" returns data.
The Account DataObject is defined as:
public class Account : EntityData
{
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int AccountId { get; set; }
public string Username { get; set; }
[DataType(DataType.EmailAddress)]
public string EmailAddress { get; set; }
public string Password { get; set; }
public bool IsBusiness { get; set; }
public string User_Id { get; set; }
[DatabaseGenerated(DatabaseGeneratedOption.None)]
[ForeignKey("User_Id")]
[Association("UserIdAssociation", "UserId", "Id")]
[Column(Order = 1)]
public virtual User User { get; set; }
public string Business_Id { get; set; }
[DatabaseGenerated(DatabaseGeneratedOption.None)]
[ForeignKey("Business_Id")]
[Association("BusinessIdAssociation", "BusinessId", "Id")]
public virtual Business Business { get; set; }
}
来源：https://stackoverflow.com/questions/28132371/ms-azure-bad-request-400