Hi, use json parsing in the bolt code.get the string json value of 0; use following link for clear understanding !
https://azure.microsoft.com/en-in/documentation/articles/hdinsight-storm-develop-csharp-event-hub-topology/ *Best regards,* *K.Sai Dilip Reddy.* On Mon, May 16, 2016 at 1:37 AM, Henry Hottelet <[email protected]> wrote: > Daniella, > > I am curious about your architecture with Kafka and storm. Can you send > the github link you used for that project? > > I would like to be able to see your example. I use IntelliJ. > > Henry > > Sent from my iPad > > On May 15, 2016, at 2:14 PM, Daniela S <[email protected]> wrote: > > Hi, > > thank you very much for your answers. But unfortunately I do not have a > JSON object yet, I only have a String, containing a JSON object. I receive > the Strings from Kafka but I do not know how to get the information out of > the String. > > example: {"timestamp": 1463335828342, "ID":570,"command":"START"} > > I would like to extract the three fields out of the String. Then I would > like to store it into Redis. > Afterwards I would like to pull all the stored (active) devices out of > Redis and to build a sum over all the devices every minute. For building > the sum I have to add another value for every device. I would like to use > Redis as a kind of cache. > > Regards, > Daniela > > *Gesendet:* Sonntag, 15. Mai 2016 um 20:06 Uhr > *Von:* "Henry Hottelet" <[email protected]> > *An:* [email protected] > *Betreff:* Re: Split Kafka JSON String > > Try using intellij plug in that converts json to pojo classes > On May 15, 2016 2:04 PM, "Nathan Leung" <[email protected]> wrote: >> >> Easiest way is to map your job to a pojo and use Jackson or gson to >> convert the json. >> On May 15, 2016 1:48 PM, "Daniela S" <[email protected]> wrote: >>> >>> Hi >>> >>> I am receiving Strings of JSON from Kafka. I would like to split the >>> string to get each field from the JSON object to store it into Redis. >>> How can I split the string and assign the parts to variables? >>> >>> Thank you in advance. >>> >>> Regards, >>> Daniela >>> >>
