杰克逊JsonParser将DateTime月份的偏移量-1

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

public class JsonParserExample {
    public static void main(String[] args) {
        // JSON数据
        String jsonData = "{\"dateTime\": \"2022-03-15T10:30:00Z\"}";

        // 创建JsonParser对象
        JsonFactory factory = new JsonFactory();
        try (JsonParser parser = factory.createParser(jsonData)) {
            // 解析JSON数据
            ObjectMapper mapper = new ObjectMapper();
            Date dateTime = mapper.readValue(parser, Date.class);

            // 修改月份偏移量
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(dateTime);
            calendar.add(Calendar.MONTH, -1);
            Date modifiedDateTime = calendar.getTime();

            // 输出修改后的日期时间
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
            System.out.println("Modified DateTime: " + sdf.format(modifiedDateTime));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}