package com.estate.expert.admin.service;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class JacksonTest {
    public static void main(String[] args) throws JsonProcessingException {

        ObjectMapper objectMapper = new ObjectMapper();

        // 注册 JavaTime 模块
        objectMapper.registerModule(new JavaTimeModule());

        Map<String, Object> map = new HashMap<>();

        // Date 类型
        map.put("date", new Date());
        // LocalDateTime 类型
        map.put("localDateTime", LocalDateTime.now());
        // LocalDate 类型
        map.put("localDate", LocalDate.now());

        String json = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(map);

        System.out.println(json);
    }
}