JSON to Map always gonna be a string/object data type. i have GSON lib from google. Gson library working with string not for complex objects you need to do something else

By replacing Map<String,String> with a different desired type, the mapper will convert the string into any complex collection, like List<MyObject>, or List<Map<String, MyObject>>

Jun 6, 2012 · JSON requires the key to be a string, so if you truly need the data to be represented as keyed (e.g. you don't want to use an array, like in Pointy's answer, because you'd like to guarantee it …

Nov 27, 2017 · How to send a Map in JSON Asked 8 years, 2 months ago Modified 6 months ago Viewed 122k times

Aug 28, 2012 · This Stack Overflow post provides solutions for converting a HashMap to a JSON object in Java using different methods and libraries.

Jan 26, 2017 · Map<String, Object> retMap = new HashMap<String, Object>(); I want to store all the data from the JSONObject in that HashMap. Can anyone provide code for this? I want to use the …

Feb 4, 2014 · A JSONObject effectively is a map. If you really need a Java Map either iterate through the JSONObject and populate your Map or use a JSON parsing library that does deserialization to …

Mar 30, 2015 · How can I convert a Map to a valid JSON using Jackson? I am doing it using Google's GSON via a Spring Boot REST Post method... Here's the RESTful Web Service: import …

Oct 14, 2021 · I'm migrating from node to java and finding really difficult to work with JSON I have the following Map structure: {1=Terrain, 2=Tree, 3=Building} Which I need to transform into JSON, but …

java's built in JSON libraries are the quickets way to do so, but in my experience GSON is the best library for parsing a JSON into a POJO painlessly.