Handle Exceptions when using @RequestHeader in spring application

问题

Here is my Java code that uses the Spring Framework:

@RequestMapping(method = RequestMethod.POST)
public @ResponseBody String SampleFunction(@RequestHeader("Authorization") String details)
{
    System.out.println("Authorization details recieved");

}

I am trying to access Authorization header. I want to handle the missing Authorization header by redirecting it to a 400 Bad Request page. How can I do this?

回答1:

By default the header is required. So if it is missing, you will get an exception. However, see code below. Now, if it is missing, the details string will be null.

@RequestHeader(required = false, value = "Authorization") String details

回答2:

If the header value is missing by default the response is 400 Bad Request. You just need to configure redirecting.

来源：https://stackoverflow.com/questions/13601150/handle-exceptions-when-using-requestheader-in-spring-application