Zend_Json_Server：返回自定义消息和代码的错误？

I have an API that uses Zend_Json_Server and defines a class that handles the requests. However, how can I return an error, so that I can set the message AND the error code? When I throw a new exception, I can only set the message. The exception code is not used.

I found the solution:

The error code has to be somewhere between -32099 and -32000.

So you can throw an Exception and pass one of those valid error codes.

Why don't you call the fault method on Zend_Json_Server?