안녕하세요 선생님

강의와는 별개로 강의를듣고 혼자 뭔가를 만들어보고 싶어서 구글차트를 이용해서 그래프 그리기를 하고 싶은데

문제가 생겨서ㅠ 구글링도 해보고 OKKY 커뮤니티에도 올려봐도 답이안나와서.. 여기까지 오게되었네요..ㅠ

package hello.hellospring.controller;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import java.io.File;
import java.io.IOException;

@Controller
@RequestMapping("/")
public class RootController {



    @GetMapping
    public String index(Model model) {
        model.addAttribute("chartData", getChartData());
        return "index";
    }

/*    private List<List<Object>> getChartData() {
        return List.of(
                List.of("CVE-2020-22782", 11),
                List.of("CVE-2020-22781", 10),
                List.of("CVE-2020-22783", 10),
                List.of("CVE-2020-22789", 10),
                List.of("CVE-2020-22784", 8),
                List.of("CVE-2020-36327", 7),
                List.of("CVE-2020-7038", 7),
                List.of("CVE-2020-7037", 7),
                List.of("CVE-2020-2278", 7),
                List.of("CVE-2020-22790", 7)
        );
    }*/
    private CVE getChartData() {
        ObjectMapper mapper = new ObjectMapper();


            try {
                CVE cve = mapper.readValue(new File("C:\\json\\test.json"), CVE.class);
                System.out.println(cve);
            } catch (IOException e) {
                e.printStackTrace();
            }
        return null;

    }

}

class CVE {
    private String index;
    private int count;
}

주석 부분이 JSON 파일을 열지못해서 저렇게 테스트 해보았던거구요ㅠㅠ


밑에가 JSON 파일데이터 입니다.

[{"index":"CVE-2020-22782","count":11},
{"index":"CVE-2020-22781","count":10},
{"index":"CVE-2020-22783","count":10},
{"index":"CVE-2020-22789","count":10},
{"index":"CVE-2020-22784","count":8},
{"index":"CVE-2020-36327","count":7},
{"index":"CVE-2020-7038","count":7},
{"index":"CVE-2020-7037","count":7}
,{"index":"CVE-2020-22785","count":7}
,{"index":"CVE-2020-22790","count":7}]


돌려서 새로고침하면 com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `hello.hellospring.controller.CVE` out of START_ARRAY token
 at [Source: (File); line: 1, column: 1] 이 에러가 뜨네요..

객체자체를 MODEL.ATTRIBUTE에 매개변수로 넣고 싶은데 제가 놓치고있는게 뭔지 궁금하네요 ㅜㅜ

{ 
  "data": [ 
    {"index":"CVE-2020-22782","count":11}, 
    {"index":"CVE-2020-22781","count":10}, 
    {"index":"CVE-2020-22783","count":10}, 
    {"index":"CVE-2020-22789","count":10}, 
    {"index":"CVE-2020-22784","count":8}, 
    {"index":"CVE-2020-36327","count":7}, 
    {"index":"CVE-2020-7038","count":7},
   {"index":"CVE-2020-7037","count":7},
    {"index":"CVE-2020-22785","count":7},
    {"index":"CVE-2020-22790","count":7} 
  ] 
}