fastJson的配置时间格式化，如果在config中配置的话，所有的bean都会统一格式，有的项目灵活格式。

1.JSONObject.DEFFAULT_DATE_FORMAT="yyyy-MM-dd";//设置日期格式

2.JSONObject.toJSONString(resultMap, SerializerFeature.WriteMapNullValue,SerializerFeature.DisableCircularReferenceDetect,
SerializerFeature.WriteDateUseDateFormat);

但是上面的解决方案面临一个问题，如果不满足上面的条件（多个date属性，而且需要按照不定的格式序列化这些日期属性），那么我们就需要另辟蹊径，使用fastjson的特性来完成：

@JSONField(format="yyyyMMdd")
private Date date;
@JSONField(format="yyyy-MM-dd HH:mm:ss")
private Date date1;

配置文件： 其中configureMessageConverters 配置了消息转换，fastJsonConfig.setDateFormat(“yyyy-MM-dd HH:mm:ss”);统一样式。

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern="yyyy-MM-dd", timezone = "GMT+8")
和 jastJson冲突。

package cn.etcom.web.interceptor;

import cn.etcom.util.prop.WebDefineProperties;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

@Configuration
public class WebMvcConfgInterceptor implements WebMvcConfigurer {
	@Autowired
	private WebDefineProperties wdp;
	/**
	 * 静态资源
	 */
	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static");
		registry.addResourceHandler("/swagger/**").addResourceLocations("classpath:/static/swagger/");
		registry.addResourceHandler("/upload/**").addResourceLocations("file:" +wdp.getAudioPath());
		WebMvcConfigurer.super.addResourceHandlers(registry);
	}
	/**
	 * 消息转换
	 */
	@Override
	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
		Iterator<HttpMessageConverter<?>> iterator = converters.iterator();
		while (iterator.hasNext()) {
			HttpMessageConverter<?> converter = iterator.next();
			if (converter instanceof MappingJackson2HttpMessageConverter) {
				iterator.remove();
			}
		}
		FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
		FastJsonConfig fastJsonConfig = new FastJsonConfig();
//		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat, SerializerFeature.QuoteFieldNames,
//				SerializerFeature.WriteEnumUsingToString, SerializerFeature.WriteDateUseDateFormat,
//				SerializerFeature.DisableCircularReferenceDetect);
		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat, SerializerFeature.QuoteFieldNames,
				SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteDateUseDateFormat,
				SerializerFeature.DisableCircularReferenceDetect);
		//fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
		List<MediaType> fastMediaTypes = new ArrayList<>();
		fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
		fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
		fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
		converters.add(fastJsonHttpMessageConverter);
		WebMvcConfigurer.super.configureMessageConverters(converters);
	}

	/**
	 * 跨域操作
	 */
	@Override
	public void addCorsMappings(CorsRegistry registry) {
		registry.addMapping("/**").allowedOrigins("*").allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
				.allowCredentials(false).maxAge(3600);
		WebMvcConfigurer.super.addCorsMappings(registry);
	}
}