[rabbitmq-discuss] How to check if custom headers attribute exist

Thu Jan 30 17:26:12 GMT 2014

Does this look right?

Map<String,object> headers = properties.getHeaders();

if (headers.containsKey("FirstName")) {
        String strFirstName = props.getHeaders().get("
FirstName").toString();
}

On Thu, Jan 30, 2014 at 12:18 PM, cw storm <cwstorm at gmail.com> wrote:

> Thanks Tim.  How do code to see if the key is there or not?
>
>
> On Thu, Jan 30, 2014 at 11:58 AM, Tim Watson <tim at rabbitmq.com> wrote:
>
>> BasicProperties#getHeaders() returns a Map, so Map#get(key) will return
>> `null' if the key isn't present. It's your #toString() on `null' that is
>> likely causing the problem. You could also call
>> Map#containsKey("FirstName") instead of checking for `null' if you prefer.
>>
>> Cheers,
>> Tim
>>
>> On 30 Jan 2014, at 16:30, cw storm wrote:
>>
>> > Please forgive me but I have a simple question.  How can I check to see
>> if there's custom header attribute exist or not before I perform the below:
>> >
>> > String strFirstName = props.getHeaders().get("FirstName").toString()
>> >
>> > I believe if there's no custom headers, then it'll exception.
>> > _______________________________________________
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>>
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>
>
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