json Array to bean ( object mapper )

Question

Read the json object and store into the bean by creating the new getter n setter. I want to read the bold value from below json object received as string.

[{"country":"**India**","provinces":[{**"province":"India","confirmed":265928,"recovered":129095,"deaths":7473,"active":129360**}],"latitude":20.593684,"longitude":78.96288,"date":"2020-06-08"}]

Bean:

@JsonIgnoreProperties(ignoreUnknown = true)
public class CoronaBean {
private String country; } and other needs to be created

ObjectMapper mapper = new ObjectMapper();
        try {
            CoronaBean[] coronaBean = mapper.readValue(json, CoronaBean[].class);
            for(CoronaBean c: coronaBean ){
            System.out.println(c.getCountry());
            }
        } catch (JsonProcessingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

I am successfully able to read the country but I want to read other values which are in bold above

potatojesz · Accepted Answer · 2020-06-09 18:06:21Z

1

CoronaBean should contain property provinces, which must be another Bean with properties you want from there. Simple as that.

Look at the code:

@JsonIgnoreProperties(ignoreUnknown = true)
public class CoronaBean {
private String country; 
private ProvinceBean[] provinces
...getters and setters

} 

@JsonIgnoreProperties(ignoreUnknown = true)
public class ProvinceBean {
private Integer confirmed;
private Integer recovered;
...rest you want and getters and setters

I think you can also check this question for more details and ways to achive what you need: How to parse JSON in Java

answered Jun 9, 2020 at 18:06

potatojesz

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