Get data as a JSON format in spring boot - spring

Question

I want to build a request endepoints using spring boot: I have to consume restful api and convert that into another rest endpoint.
I have a json Response on www.exampleapiurl.com/details
[{
"name": "age",
"value": "Child"
},
{
"name": "recommendable",
"value": true
},
{
"name": "supported",
"value": yes
},
]
[{
"name": "age",
"value": "Adult"
},
{
"name": "recommendable",
"value": true
},
{
"name": "supported",
"value": no
},
]
I want the response to be:
[{
"age": "Child"
},
{
"recommendable": true
},
{
"supported": "yes"
},
]
[{
"age": "Adult"
},
{
"recommendable": true
},
{
"supported": "no"
},
]
For this I have a attribute class with getter and setter:
Attributes.class
#JsonIgnoreProperties(ignoreUnknown = true)
public class Attributes {
private String age;
private boolean recommendable;
private String supported;
getter and setter for these:
}
This is my service.java class
#Service
public class CService {
private static RestTemplate restTemplate;
public String url;
#Autowired
public CService(String url) {
this.url = url;
}
public Attributes getAttributes() {
HttpHeaders headers= new HttpHeaders();
headers.add("Authorization", "some value");
HttpEntity<String> request = new HttpEntity<String>(headers);
ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.GET, request, Attributes.class);
return response.getBody();
}
}
And this is my controller.class
#Controller
public class CController {
private CService cService;
#Autowired
public CController(CService cService) {
this.cService = cService;
}
#RequestMapping(value="/example")
#ResponseBody
public Attributes getCAttributes() {
return cService.getAttributes(); }
}
The Authorization is successful but,
I am not getting any response for now

Answer 1

What you can do is create a model class to recive the response from example API
as follows.
#JsonIgnoreProperties(ignoreUnknown = true)
public class Details{
private String name;
private String value;
#JsonProperty("value")
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
#JsonProperty("name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Then change your invoking RestTemplate code as follows
Details[] details = null;
//Keeps the example API's data in array.
ResponseEntity<Details[]> response = restTemplate.exchange(url, HttpMethod.GET, request, Details[].class);
details = response.getBody();
//Next step is to process this array and send the response back to your client
List<Attributes> attributes = new ArrayList<Attributes>();
Attributes attr = null;
for(Details detail : details) {
attr = new Attributes();
//set the values here
}
//returns the attributes here
attributes.toArray(new Attributes[attributes.size()]);