json2pojo | create java POJOs from example JSON files | JSON Processing library
kandi X-RAY | json2pojo Summary
kandi X-RAY | json2pojo Summary
This script, json2pojo, attempts to create java POJOs from example JSON files. In general, error handling is pretty woeful, so expect it to crash out with a stacktrace if you do something bad. :). For command line flags, use json2pojo.rb -h. There are limits to what can be achieved with automated generation. This script works on a specific subset of JSON.
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QUESTION
I'm receiving JSON which I want to parse:
...ANSWER
Answered 2021-Nov-18 at 12:07First of all include the JSON
Library in your project.
Then iterate through your JSON like this:
QUESTION
I have a json file with multiple arrays. It is not clear to me how to set up Key-Value pairs when this isn't one given. I understand that a [ … ] represents an array and { … } represents an object. I looked at tutorials online but none had an answer to my question and what I found in this JSON.
The Problem: I'm trying to convert every property in the JSON to POJO / dataTypes. There are these properties in the arraylist below that don't have a key-value pair. "5", "1964-07-20", null, "7", null, Within this arraylist there are properties that have a key-value pair. { "retail": "7.05", "price": "12.07", "cost": "3.01", "fees": "1.75", "profit": "5.85" } How to create a class that handles both and stores each property to a datatype. It will have the same fields at the start (the 5 none key properties), It will always be the same. The Value is what only changes.
Thanks in advance.
There is no Key-Value associated with the below properties
...ANSWER
Answered 2021-Mar-08 at 16:24The main problem here seems to lie with your JSON format. It starts off fine with the artist
, record
etc. but then you have defined an array of musicRecords
which seems to not only represent an array of records but also some extra data as well (a date "1964-07-20"
for example).
Without knowing what this structure is for, it would seem like those fields belong with the artist
and record
fields in your root JSON object, where they need some sort of key to represent their purpose.
Then you could easily make a POJO that makes a bit more logical sense and will be easier to use in your project.
However if the JSON file is coming from an external source that you have no influence over, you have two options:
Use the JSON Auto Formatted File that you posted
This approach is probably not the best idea, mostly due to the POJO then not representing a logical object that will be easy to use in your code but also because of type safety. You have to upcast all of the objects in your list to Object
which would mean casting them all back down again when they need to be accessed. This is generally bad practice and if the JSON structure changed at all this would be very difficult to debug.
Use a different JSON library
The best solution would be to use a JSON library that allows you to read a JSON file step by step and then map to a POJO that you're comfortable with and better represents your use case. However as far as I am aware, GSON is a direct deserialization library so cannot offer the fine tuning you would need to map to a different format.
QUESTION
im getting the error: ** Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 24 path $.result** still trying to get my good path with it, i tried some other way but i still cant get to work.
this is my json example:
...ANSWER
Answered 2020-Feb-28 at 00:11@SerializedName("country_logo")
@Expose
private Object countryLogo;
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On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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