爱上MVC~业务层刻意抛出异常,全局异常的捕获它并按格式返回

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对于业务层的程序的致命错误,我们一直的做法就是直接抛出指定的异常,让程序去终断,这种做法是对的,因为如果一个业务出现了致命的阻塞的问题,就没有必要再向上一层一层的返回了,但这时有个问题,直接抛异常,意味着服务器直接500了,前端如何去显示,或者如果你是API的服务,如果为前端返回,如果是500,那直接就挂了,哈哈!

下面是在MVC环境下优化的全局异常捕获代码(非API)

/// <summary>
/// 全局异常捕获
/// </summary>
public class GlobalExceptionFilterAttribute : HandleErrorAttribute
{
public override void OnException(ExceptionContext context)
{
JsonResult response = new JsonResult()
{
JsonRequestBehavior = JsonRequestBehavior.AllowGet
};
if (context.Exception is ArgumentException)
{
var exception = (ArgumentException)context.Exception;
response.Data = new
{
statusCode = System.Net.HttpStatusCode.InternalServerError,
errorcode = "",
message = exception.Message,
};
}
else if (context.Exception is Exception)
{
var exception = (Exception)context.Exception;
response.Data = new
{
statusCode = System.Net.HttpStatusCode.InternalServerError,
errorcode = "",
message = exception.Message,
};
}
else
{ response.Data = new
{
statusCode = System.Net.HttpStatusCode.InternalServerError,
errorcode = "",
message = "其它异常",
};
} context.Result = response;
context.ExceptionHandled = true;
context.HttpContext.Response.Clear();
context.HttpContext.Response.TrySkipIisCustomErrors = true;
} }