Your ApplicationContext is unlikely to start due to a @ComponentScan of the default package.
Main Application 파일을 java 폴더 바로 밑에 두어서 생기는 문제이다.
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance
1
2
3
4
5
6
7
8
9
10
@Getter
@Setter
@Builder
@AllArgsConstructor
public class PeopleInfo {
private int id;
private int numberOfCurrentPeople;
private int numberOfNewPeople;
private String time;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
public class PeopleInfoDeserializer implements Deserializer<PeopleInfo> {
@Override
public PeopleInfo deserialize(String topic, byte[] data) {
ObjectMapper mapper = new ObjectMapper();
PeopleInfo peopleInfo = null;
try {
peopleInfo = mapper.readValue(data,PeopleInfo.class);
} catch (Exception e) {
e.printStackTrace();
}
return peopleInfo;
}
}
위와 같이 정의해 두었을때, byte 배열을 PeopleInfo로 deserialize할때 발생한 에러이다. 해결책은 PeopleInfo에 아래와 같이 Default 생성자를 선언해놓으면 된다.
1
2
3
4
5
6
7
8
9
10
11
@Getter
@Setter
@Builder
@AllArgsConstructor
@NoArgsConstructor // 추가!
public class PeopleInfo {
private int id;
private int numberOfCurrentPeople;
private int numberOfNewPeople;
private String time;
}