SpringBoot拦截Controller返回数据

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

@ControllerAdvice
public class ResponseBodyAnalysis implements ResponseBodyAdvice {
    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        System.out.println("++++++++++++++++++++++++++");
        System.out.println(body);
        System.out.println("++++++++++++++++++++++++++");
        try {
            ObjectMapper objectMapper = new ObjectMapper();
            String json = objectMapper.writeValueAsString(body);
            System.out.println(json);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        System.out.println("++++++++++++++++++++++++++");
        return body;
    }
}