I changed the processor code to
Object body = exchange.getIn().getBody();
System.out.println("class: "+body.getClass());
System.out.println("as string:" + body);
and it printed :
class: class com.google.gson.internal.LinkedTreeMap
as string:{a=this is a, b=this is b, c={}}
What is happening... not able to create a mind map of what is happening.
Cheers
Bhuvan
On Sun, Oct 11, 2015 at 8:21 AM, Andrew Block <[email protected]> wrote:
> In your processor, since you are requesting the object contained in the
> message body as a particular type, it is possible for the value to be null
> if that is not the type that is actually on the body. Would you be able to
> verify the object type after the unmarshall.? You can do this in your
> processor by getting the Object on the message without a type
> (message.getIn().getBody() and checking the type.
>
> - Andy
>
>
> --
> Andrew Block
>
> On October 10, 2015 at 3:46:52 PM, Bhuvan Gupta ([email protected])
> wrote:
>
> Hello,
>
> I setup the camel routes shown below:
> In stage folder i can see message getting marshal properly into a json.
> but while un-marshaling on this line body.setA("modified A");
> i get a null pointer exception basically body is null.. *Why* ?
>
> StackOverflow question link:
>
> http://stackoverflow.com/questions/33058563/adding-a-processor-after-unmarshaling-in-apache-camel
>
> from("direct:stage").marshal().json(JsonLibrary.Gson).to("file://stage");
>
> from("file://stage").unmarshal().json(JsonLibrary.Gson).process(new
> Processor() {
> @Override
> public void process(Exchange exchange) throws Exception {
> MyTest body = exchange.getIn().getBody(MyTest.class);
> body.setA("modified A");
> }}).to("direct:b");
>
>
