【fastxml】时间类型序列化

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/statics/**").addResourceLocations("classpath:/statics/");
    }
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = jackson2HttpMessageConverter.getObjectMapper();

        //json中多余的参数不报错，不想要可以改掉
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        //设置全局的时间转化
        SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        objectMapper.setDateFormat(smt);
        objectMapper.setTimeZone(TimeZone.getTimeZone("GMT+8"));//解决时区差8小时问题


        //设置中文编码格式
        List<MediaType> list = new ArrayList<MediaType>();
        list.add(MediaType.APPLICATION_JSON_UTF8);
        jackson2HttpMessageConverter.setSupportedMediaTypes(list);


        //生成json时，将所有Long转换成String
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);

        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(0, jackson2HttpMessageConverter);
    }
}

上面是参考代码

其中统一全局设置时间格式就是SimpleDateFormat，但是不满足需求。所以将数据库中date类型的数据全部装换成string类型输出。

重要代码就是下面的，日志和异常处理自己加

private String toJsonString(QueryResult queryResult,String dateFormat){
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setDateFormat(new SimpleDateFormat(dateFormat));
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(java.sql.Date.class, ToStringSerializer.instance);
        return objectMapper.writeValueAsString(queryResult);
    }