LocalDateTime的全局自定义序列化

目录

一、 引用依赖

二、自定义序列化类

三、添加配置类

一、 引用依赖

    <dependency>
      <groupId>com.fasterxml.jackson.datatype</groupId>
      <artifactId>jackson-datatype-jsr310</artifactId>
      <version>7.2.0</version>
    </dependency>

二、自定义序列化类

package com.vteam.uap.serializer;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;

import java.io.IOException;
import java.time.DateTimeException;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * @author Miller.Lai
 * @description: LocalDateTime自定义序列化
 * @date 2023-12-21 13:26:47
 */
public class CustomLocalDateTimeDeserializer extends LocalDateTimeDeserializer {

    public CustomLocalDateTimeDeserializer(DateTimeFormatter formatter) {
        super(formatter);
    }

    @Override
    public LocalDateTime deserialize(JsonParser parser, DeserializationContext context) throws IOException {
        if (parser.hasTokenId(6)) {
            return this._fromString(parser, context, parser.getText());
        } else if (parser.isExpectedStartObjectToken()) {
            return this._fromString(parser, context, context.extractScalarFromObject(parser, this, this.handledType()));
        } else {
            if (parser.isExpectedStartArrayToken()) {
                JsonToken t = parser.nextToken();
                if (t == JsonToken.END_ARRAY) {
                    return null;
                }

                LocalDateTime result;
                if ((t == JsonToken.VALUE_STRING || t == JsonToken.VALUE_EMBEDDED_OBJECT) && context.isEnabled(DeserializationFeature.UNWRAP_SINGLE_VALUE_ARRAYS)) {
                    result = this.deserialize(parser, context);
                    if (parser.nextToken() != JsonToken.END_ARRAY) {
                        this.handleMissingEndArrayForSingle(parser, context);
                    }

                    return result;
                }

                if (t == JsonToken.VALUE_NUMBER_INT) {
                    int year = parser.getIntValue();
                    int month = parser.nextIntValue(-1);
                    int day = parser.nextIntValue(-1);
                    int hour = parser.nextIntValue(-1);
                    int minute = parser.nextIntValue(-1);
                    t = parser.nextToken();
                    if (t == JsonToken.END_ARRAY) {
                        result = LocalDateTime.of(year, month, day, hour, minute);
                    } else {
                        int second = parser.getIntValue();
                        t = parser.nextToken();
                        if (t == JsonToken.END_ARRAY) {
                            result = LocalDateTime.of(year, month, day, hour, minute, second);
                        } else {
                            int partialSecond = parser.getIntValue();
                            if (partialSecond < 1000 && !context.isEnabled(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS)) {
                                partialSecond *= 1000000;
                            }

                            if (parser.nextToken() != JsonToken.END_ARRAY) {
                                throw context.wrongTokenException(parser, this.handledType(), JsonToken.END_ARRAY, "Expected array to end");
                            }

                            result = LocalDateTime.of(year, month, day, hour, minute, second, partialSecond);
                        }
                    }

                    return result;
                }

                context.reportInputMismatch(this.handledType(), "Unexpected token (%s) within Array, expected VALUE_NUMBER_INT", new Object[]{t});
            }

            if (parser.hasToken(JsonToken.VALUE_EMBEDDED_OBJECT)) {
                return (LocalDateTime)parser.getEmbeddedObject();
            } else {
                if (parser.hasToken(JsonToken.VALUE_NUMBER_INT)) {
                    this._throwNoNumericTimestampNeedTimeZone(parser, context);
                }

                return (LocalDateTime)this._handleUnexpectedToken(context, parser, "Expected array or string.", new Object[0]);
            }
        }
    }



    @Override
    protected LocalDateTime _fromString(JsonParser p, DeserializationContext ctxt, String string0) throws IOException {
        String string = string0.trim();

        DateTimeFormatter formatter  = DateTimeFormatter.ISO_LOCAL_DATE_TIME;

        if (string.length() == 0) {
            return (LocalDateTime)this._fromEmptyString(p, ctxt, string);
        } else {
            try {
                if (formatter == DateTimeFormatter.ISO_LOCAL_DATE_TIME && string.length() > 10 && string.charAt(10) == 'T' && string.endsWith("Z")) {
                    if (this.isLenient()) {
                        return LocalDateTime.parse(string.substring(0, string.length() - 1), formatter);
                    } else {
                        JavaType t = this.getValueType(ctxt);
                        return (LocalDateTime)ctxt.handleWeirdStringValue(t.getRawClass(), string, "Should not contain offset when 'strict' mode set for property or type (enable 'lenient' handling to allow)", new Object[0]);
                    }
                } else {
                    return convert(string);
                }
            } catch (DateTimeException var6) {
                return (LocalDateTime)this._handleDateTimeException(ctxt, var6, string);
            }
        }
    }


    public LocalDateTime convert(String source) {
        source = source.trim();
        if ("".equals(source)) {
            return null;
        }
        if (source.matches("^\\d{4}-\\d{1,2}$")) {
            // yyyy-MM
            return LocalDate.parse(source+"-01", DateTimeFormatter.ofPattern("yyyy-MM-dd")).atStartOfDay();
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")) {
            // yyyy-MM-dd
            return LocalDate.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd")).atStartOfDay();
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")) {
            // yyyy-MM-dd HH:mm
            return LocalDateTime.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")) {
            // yyyy-MM-dd HH:mm:ss
            return LocalDateTime.parse(source, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        } else {
            throw new IllegalArgumentException("Invalid datetime value '" + source + "'");
        }
    }

}

三、添加配置类

package com.vteam.ipu.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.vteam.uap.serializer.CustomLocalDateTimeDeserializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * @author Miller.Lai
 * @description:  自定义LocalDateTime的序列化方式
 * @date 2023-12-20 16:41:33
 */
@Configuration
public class DateSerializerConfig {

    @Bean
    public ObjectMapper serializingObjectMapper() {
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        CustomLocalDateTimeDeserializer dateTimeDeserializer = new CustomLocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        LocalDateTimeSerializer dateTimeSerializer = new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        javaTimeModule.addDeserializer(LocalDateTime.class, dateTimeDeserializer);
        javaTimeModule.addSerializer(LocalDateTime.class, dateTimeSerializer);

        LocalDateDeserializer localDateDeserializer = new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
        LocalDateSerializer localDateSerializer = new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
        javaTimeModule.addDeserializer(LocalDate.class, localDateDeserializer);
        javaTimeModule.addSerializer(LocalDate.class, localDateSerializer);

        return Jackson2ObjectMapperBuilder.json().modules(javaTimeModule)
                .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS).build();
    }

}