请教下如何解决spring boot 返回json 不要被强加转义符
下面是我的代码：

@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
                .indentOutput(true)
                .serializationInclusion(JsonInclude.Include.NON_NULL)//序列化返回值排除null
                .dateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));//时间返回值转化成时间字符串
        converters.add(new StringHttpMessageConverter());
        converters.add(new MappingJackson2HttpMessageConverter(builder.build()));
    }