Question

我正在尝试处理OData查询选项不正确（例如空扩展）的情况。如果查询错误，我希望返回 400 状态代码而不是 500 。

http://localhost:51625/odata/persons(123)?$expand=

我已经实现了自定义 ODataEnableQueryAttribute ，该继承自 EnableQueryAttribute ，并将其用于控制器的操作。我覆盖了 EnableQueryAttribute 中的所有方法，并在try ... catch块中调用了基本的方法

public class ODataEnableQueryAttribute : EnableQueryAttribute
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        try
        {
            base.OnActionExecuting(context);
        }
        catch (Exception ex)
        {
            context.Result = new OAIncorrectQueryResult(ex.Message);
        }
    }

    public override void OnActionExecuted(ActionExecutedContext actionExecutedContext)
    {
        try
        {
            base.OnActionExecuted(actionExecutedContext);
        }
        catch (Exception ex)
        {
            actionExecutedContext.Result = new OAIncorrectQueryResult(ex.Message);
        }
    }
}

但是我的自定义属性中没有一种方法被调用。 我收到了ArgumentException“'select'和'expand'不能都为null或为空。从ODataQueryParameterBindingAttribute继承。堆栈跟踪：

at Microsoft.AspNet.OData.Query.SelectExpandQueryOption..ctor(String select, String expand, ODataQueryContext context, ODataQueryOptionParser queryOptionParser)
   at Microsoft.AspNet.OData.Query.ODataQueryOptions.BuildQueryOptions(IDictionary`2 queryParameters)
   at Microsoft.AspNet.OData.Query.ODataQueryOptions.Initialize(ODataQueryContext context)
   at Microsoft.AspNet.OData.Query.ODataQueryOptions`1..ctor(ODataQueryContext context, HttpRequest request)
   at Microsoft.AspNet.OData.ODataQueryParameterBindingAttribute.ODataQueryParameterBinding.CreateODataQueryOptions[T](ODataQueryContext context, HttpRequest request)
   at Microsoft.AspNet.OData.ODataQueryParameterBindingAttribute.ODataQueryParameterBinding.BindModelAsync(ModelBindingContext bindingContext)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextExceptionFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ExceptionContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)

可能是从创建ODataQueryOptions的地方引发的异常。（第86行-https://github.com/OData/WebApi/blob/master/src/Microsoft.AspNet.OData/ODataQueryParameterBindingAttribute.cs#L86）

因此，如何通过返回400错误而不是500错误来处理无效的查询选项

OData .net核心无效查询选项处理

0 个答案: