【Java】全局日期处理，包含LocalDate, LocalDateTime, Date

共包含3个文件：

1. DateFormatConfig.java

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package com.yykj.lckj.common.config;   import com.alibaba.fastjson2.util.DateUtils; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonParser; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.JsonDeserializer; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; import org.springframework.boot.jackson.JsonComponent;   import java.io.IOException; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.format.DateTimeFormatter;   @JsonComponent public class DateFormatConfig {       private final static DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");     private final static DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern("HH:mm:ss");       /**      * LocalDateTime: 字符串反序列化      */     public static class DateJsonDeserializer extends JsonDeserializer<LocalDateTime> {         @Override         public LocalDateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {             return DateUtils.parseLocalDateTime(jsonParser.getText());         }     }       /**      * LocalDateTime序列化      */     public static class DateJsonSerializer extends JsonSerializer<LocalDateTime> {         @Override         public void serialize(LocalDateTime localDateTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {             jsonGenerator.writeString(localDateTime.format(dateTimeFormatter));         }     }       /**      * LocalTime序列化      */     public static class TimeJsonSerializer extends JsonSerializer<LocalTime> {         @Override         public void serialize(LocalTime localTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {             jsonGenerator.writeString(localTime.format(timeFormatter));         }     } }

　　

2. WebMvcConfiguration.java

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package com.yykj.lckj.common.config;   import org.springframework.context.annotation.Configuration; import org.springframework.format.Formatter; import org.springframework.format.FormatterRegistry; import org.springframework.format.datetime.DateFormatter; import org.springframework.format.datetime.standard.DateTimeFormatterRegistrar; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;   import javax.annotation.Nonnull; import java.text.ParseException; import java.time.format.DateTimeFormatter; import java.util.Arrays; import java.util.Date; import java.util.List; import java.util.Locale;   @Configuration public class WebMvcConfiguration implements WebMvcConfigurer {       private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");     private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");     private static final DateTimeFormatter DATETIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");         @Override     public void addFormatters(@Nonnull FormatterRegistry registry) {         DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();         registrar.setTimeFormatter(TIME_FORMATTER);         registrar.setDateFormatter(DATE_FORMATTER);         registrar.setDateTimeFormatter(DATETIME_FORMATTER);         registrar.registerFormatters(registry);         registry.addFormatter(new CompositeFormatter());     }       /**      * java.util.Date日期格式化.      */     private static class CompositeFormatter implements Formatter<Date> {         private final List<Formatter<Date>> formatters = Arrays.asList(             new DateFormatter("yyyy-MM-dd HH:mm:ss"),             new DateFormatter("yyyy-MM-dd"),             new DateFormatter("HH:mm:ss")         );           @Override         public @Nonnull Date parse(@Nonnull String text, @Nonnull Locale locale) throws ParseException {             for (Formatter<Date> formatter : formatters) {                 try {                     return formatter.parse(text, locale);                 } catch (ParseException ignored) {                 }             }             throw new ParseException("Unable to parse date: " + text, 0);         }           @Override         public @Nonnull String print(@Nonnull Date date, @Nonnull Locale locale) {             return formatters.get(0).print(date, locale);         }     } }

　　

3. GlobalControllerAdvice.java

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package com.yykj.lckj.common.config;   import com.alibaba.fastjson2.util.DateUtils; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.InitBinder;   import java.beans.PropertyEditorSupport; import java.time.LocalDateTime;   @ControllerAdvice public class GlobalControllerAdvice {       @InitBinder     public void initBinder(WebDataBinder binder) {         binder.registerCustomEditor(LocalDateTime.class, new PropertyEditorSupport() {             @Override             public void setAsText(String text) {                 setValue(DateUtils.parseLocalDateTime(text));             }         });     } }