spring boot @ResponseBody轉換JSON 時 Date 類型處理方法 ,這里一共有兩種不同解析方式(Jackson和FastJson兩種方式,springboot我用的1.x的版本)
第一種方式:默認的json處理是 jackson 也就是對configureMessageConverters 沒做配置時
mybatis數據查詢返回的時間,是一串數字,如何轉化成時間。兩種方法,推薦第一種
方法一:
可以在apllication.property加入下面配置就可以
#時間戳統一轉換
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8
方法二:
@JsonFormat(timezone = "GMT+8", pattern = "yyyyMMddHHmmss")
private Date createTime;
第二種方式:當configureMessageConverters 配置為FasJson處理時;
方法一:全局配置: fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
super.configureMessageConverters(converters);
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(
SerializerFeature.WriteNullListAsEmpty,
SerializerFeature.WriteMapNullValue,
SerializerFeature.WriteNullStringAsEmpty
);
//此處是全局處理方式
fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
fastConverter.setFastJsonConfig(fastJsonConfig);
List<MediaType> supportedMediaTypes = new ArrayList<MediaType>();
supportedMediaTypes.add(MediaType.ALL); // 全部格式
fastConverter.setSupportedMediaTypes(supportedMediaTypes);
converters.add(fastConverter);
}
}
方法二:在所需要的字段上配置(比較靈活的方式,根據不同需求轉換):
@JSONField(format="yyyyMMdd")
private Date createTime;
說明:這里如果字段和全局都配置了 ,最后是以全局轉換
重要補充:
當springboot版本是2.0.9以上配置fastjson不生效解決如下:
import com.alibaba.fastjson.serializer.SerializerFeature; import com.alibaba.fastjson.support.config.FastJsonConfig; import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter; import org.springframework.boot.autoconfigure.http.HttpMessageConverters; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.MediaType; import org.springframework.http.converter.StringHttpMessageConverter; import java.nio.charset.Charset; import java.util.ArrayList; import java.util.List; @Configuration public class MyConfiguration { @Bean public HttpMessageConverters customConverters() { FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter(); // 創建配置類 FastJsonConfig config = new FastJsonConfig(); config.setSerializerFeatures( SerializerFeature.WriteNullListAsEmpty, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteNullStringAsEmpty ); //此處是全局處理方式 config.setDateFormat("yyyy-MM-dd HH:mm:ss"); config.setCharset(Charset.forName("UTF-8")); fastConverter.setFastJsonConfig(config); List<MediaType> supportedMediaTypes = new ArrayList<>(); supportedMediaTypes.add(MediaType.ALL); fastConverter.setSupportedMediaTypes(supportedMediaTypes); //支持text 轉string StringHttpMessageConverter stringHttpMessageConverter = new StringHttpMessageConverter(); return new HttpMessageConverters(fastConverter, stringHttpMessageConverter); }
參考spring官網文檔:https://docs.spring.io/spring-boot/docs/2.0.9.BUILD-SNAPSHOT/reference/htmlsingle/#boot-features-spring-mvc-message-converters
