How to read JSON file in Java? ( Jackson Databind )

#Java8 #json #jackson #databind

How to read JSON file in Java? ( Jackson Databind )
In this, we are going to learn how to read a json file in java.
We will use jackson databind library here and we will see single and list of objects use case.
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You can find all the demo code here -

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00:00 Overview
00:19 JavaScript Object Notation
02:01 Jackson Databind
02:30 Parse a single Book object
03:39 Parse a List of Book
04:57 Code Demo
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Links to tools used in the video:

[abhishekpatni]

Wow this is exactly what I was looking for. Thank you!!

[pritamsharma]

Thanks a lot, short but clear description, very helpful.

[arun]

such a good content noone explains like you about jackson databind.thanks for teaching us .keep uploading good content

[bhawanagupta]

Thanks for the tutorial but want to know how we will update tha version of the package jackson- databind from a old version to current version ???

[sebastianui]

Is this supported on newer spring boot versions? I had some errors recently

[stefanodiluzio]

How is it performance wise with 2+Gb JSON files? Are there any other solutions to read and process the json file in chunks?

[lillymaryyesudass]

How can I do if get the file and data (single string) from UI side like
Controller.java
Book response = jsonDataService.uploadJson(data, file);
return response;

jsonDataService.class
public book uploadJson(String data, List<MultipartFile> file{
ObjectMapper objectMapper = new ObjectMapper();
List<Book> response = ObjectMapper.readValue(file, new
Return response;
}


If the file is not in the resourses, How to read the file and data if get from UI side and send the response ?

[sivakumarmummidi]

instead of objectmapper you said bloomberg like that, what it is