Springboot配置全局日期转换器

1.Json传参方式

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package com.example.config;   import java.text.FieldPosition; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Date;   import com.fasterxml.jackson.databind.util.StdDateFormat; import org.apache.commons.lang3.StringUtils;   /**  * JSON形式的全局时间类型转换器  */ public class CustomDateFormat extends StdDateFormat {       private static final long serialVersionUID = -3201781773655300201L;       public static final CustomDateFormat instance = new CustomDateFormat();       @Override     /**      * 只要覆盖parse(String)这个方法即可      */     public Date parse(String dateStr, ParsePosition pos) {         return getDate(dateStr, pos);     }       @Override     public Date parse(String dateStr) {         ParsePosition pos = new ParsePosition(0);         return getDate(dateStr, pos);     }       private Date getDate(String dateStr, ParsePosition pos) {         SimpleDateFormat sdf = null;         if (StringUtils.isBlank(dateStr)) {             return null;         } else if (dateStr.matches("^\d{4}-\d{1,2}$")) {             sdf = new SimpleDateFormat("yyyy-MM");             return sdf.parse(dateStr, pos);         } else if (dateStr.matches("^\d{4}-\d{1,2}-\d{1,2}$")) {             sdf = new SimpleDateFormat("yyyy-MM-dd");             return sdf.parse(dateStr, pos);         } else if (dateStr.matches("^\d{4}-\d{1,2}-\d{1,2} {1}\d{1,2}:\d{1,2}$")) {             sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");             return sdf.parse(dateStr, pos);         } else if (dateStr.matches("^\d{4}-\d{1,2}-\d{1,2} {1}\d{1,2}:\d{1,2}:\d{1,2}$")) {             sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");             return sdf.parse(dateStr, pos);         } else if (dateStr.length() == 23) {             sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");             return sdf.parse(dateStr, pos);         }         return super.parse(dateStr, pos);     }       @Override     public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition){         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");         return sdf.format(date, toAppendTo, fieldPosition);     }       @Override     public CustomDateFormat clone() {         return new CustomDateFormat();     } }

2.表单传参方式

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package com.example.config;   import org.springframework.core.convert.converter.Converter; import org.springframework.stereotype.Component;   import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List;   /**  * 表单形式的全局时间类型转换器  */ @Component public class DateConverter implements Converter<String, Date> {       private static final List<String> formarts = new ArrayList<>(4);       static {         formarts.add("yyyy-MM");         formarts.add("yyyy-MM-dd");         formarts.add("yyyy-MM-dd HH:mm");         formarts.add("yyyy-MM-dd HH:mm:ss");     }       @Override     public Date convert(String source) {         String value = source.trim();         if ("".equals(value)) {             return null;         }         if (source.matches("^\d{4}-\d{1,2}$")) {             return parseDate(source, formarts.get(0));         } else if (source.matches("^\d{4}-\d{1,2}-\d{1,2}$")) {             return parseDate(source, formarts.get(1));         } else if (source.matches("^\d{4}-\d{1,2}-\d{1,2} {1}\d{1,2}:\d{1,2}$")) {             return parseDate(source, formarts.get(2));         } else if (source.matches("^\d{4}-\d{1,2}-\d{1,2} {1}\d{1,2}:\d{1,2}:\d{1,2}$")) {             return parseDate(source, formarts.get(3));         } else {             throw new IllegalArgumentException("Invalid boolean value '" + source + "'");         }     }       /**      * 格式化日期      *      * @param dateStr String 字符型日期      * @param format  String 格式      * @return Date 日期      */     private Date parseDate(String dateStr, String format) {         Date date = null;         try {             DateFormat dateFormat = new SimpleDateFormat(format);             date = dateFormat.parse(dateStr);         } catch (Exception e) {             e.printStackTrace();         }         return date;     }   }

3.配置

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package com.example.config;   import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.support.ConversionServiceFactoryBean; import org.springframework.core.convert.ConversionService; import org.springframework.core.convert.converter.Converter; import org.springframework.http.MediaType; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; import org.springframework.util.AntPathMatcher; import org.springframework.web.servlet.config.annotation.PathMatchConfigurer; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set;   @Configuration public class WebMvcConfig implements WebMvcConfigurer {       /**      * 重写url路径匹配(忽略大小写敏感)      */     @Override     public void configurePathMatch(PathMatchConfigurer configurer) {         AntPathMatcher antPathMatcher = new AntPathMatcher();         antPathMatcher.setCaseSensitive(false);     }       /**      * JSON全局日期转换器      */     @Bean     public MappingJackson2HttpMessageConverter getMappingJackson2HttpMessageConverter() {         MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();         //设置日期格式         ObjectMapper objectMapper = new ObjectMapper();         objectMapper.setDateFormat(CustomDateFormat.instance);         objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);         mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);         //设置中文编码格式         List<MediaType> list = new ArrayList<MediaType>();         list.add(MediaType.APPLICATION_JSON_UTF8);         mappingJackson2HttpMessageConverter.setSupportedMediaTypes(list);         return mappingJackson2HttpMessageConverter;     }       @Override     public void configureMessageConverters(List<HttpMessageConverter<?>> converters){         converters.add(getMappingJackson2HttpMessageConverter());     }       /**      * 表单全局日期转换器      */     @Bean     @Autowired     public ConversionService getConversionService(DateConverter dateConverter){         ConversionServiceFactoryBean factoryBean = new ConversionServiceFactoryBean();         Set<Converter> converters = new HashSet<>();         converters.add(dateConverter);         factoryBean.setConverters(converters);         return factoryBean.getObject();     } }

　　从此不再纠结用@DateTimeFormat(patten = "yyyyy-MM-dd")还是@DateTimeForm

转载https://www.cnblogs.com/joelan0927/p/11715062.html