Spring Boot项目如何根据客户端时区显示MySQL数据库的datetime数据？

<code class="java">@Bean
@Primary
public Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder() {
    return new Jackson2ObjectMapperBuilder()
            .serializers(new DateSerializer()); // 注册自定义序列化器
}

public class DateSerializer extends StdSerializer<Date> {
    public DateSerializer() {
        super(Date.class);
    }

    @Override
    public void serialize(Date value, JsonGenerator gen, SerializerProvider provider) throws IOException {
        // 获取客户端时区 (假设从请求头获取，名为"X-Client-Timezone")
        String clientTimezone = provider.getContext().getAttributes().get("clientTimezone").toString(); 

        TimeZone clientTZ = TimeZone.getTimeZone(clientTimezone);
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        formatter.setTimeZone(clientTZ);
        gen.writeString(formatter.format(value));
    }
}</code>

<code class="java">@GetMapping("/data")
public ResponseEntity<Object> getData(HttpServletRequest request) {
    // 从请求头获取客户端时区
    String clientTimezone = request.getHeader("X-Client-Timezone");
    if (clientTimezone != null) {
        // 将客户端时区添加到Jackson上下文
        ObjectMapper mapper = new ObjectMapper();
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        mapper.writerWithDefaultPrettyPrinter().writeValueAsString(data);
        SimpleModule module = new SimpleModule();
        module.addSerializer(Date.class, new DateSerializer());
        mapper.registerModule(module);
        return ResponseEntity.ok(mapper.writeValueAsString(data));
    } else {
        return ResponseEntity.badRequest().body("Missing client timezone");
    }
}</code>