如何处理500个错误

Question

The MooTools Request.JSONP method only has onRequest, onTimeout and onSuccess events to handle results.

I am attempting to call a web API using JSONP, but when there is an error at the service end, our developers return a 500 with valid JSON describing the error.

Is there a way using MooTools Request.JSONP to catch 500 errors? (Request.JSON is not an option in our specific case).

Is the only solution to always return a 200 for JSONP?

I am using More version 1.4.0.1

Cheers.

Answer 1

Request.JSONP is just a remote script injection. it then evals/serialises the response. it does not actually rely on XHR and as such, it gives you no way to interpret the HTTP response codes.

If you want to do this, you need to use normal Request.JSON AND enable CORS to allow external domains.

otherwise, nothing you can do:

https://github.com/mootools/mootools-more/blob/master/Source/Request/Request.JSONP.js#L85-L104

you can probably subclass this and add different logic in the success method to fire errors etc when the response if of a particular type, which you have to do on your own w/o the aid of serverside semantics. good luck