How to convert JSON string into List of Java object?

Question

This is my JSON Array :-

[ 
    {
        \"firstName\" : \"abc\",
        \"lastName\" : \"xyz\"
    }, 
    {
        \"firstName\" : \"pqr\",
        \"         


        

Answer 1

I made a method to do this below called jsonArrayToObjectList. Its a handy static class that will take a filename and the file contains an array in JSON form.

 List items = jsonArrayToObjectList(
            "domain/ItemsArray.json",  Item.class);

    public static  List jsonArrayToObjectList(String jsonFileName, Class tClass) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        final File file = ResourceUtils.getFile("classpath:" + jsonFileName);
        CollectionType listType = mapper.getTypeFactory()
            .constructCollectionType(ArrayList.class, tClass);
        List ts = mapper.readValue(file, listType);
        return ts;
    }