可解決在使用默認(rèn)反序列化Jackson時(shí)，LocalDateTime類型的請(qǐng)求參數(shù)反序列化失敗的問題文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-786490.html

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.Converter;

import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * @author wzy wzynov@qq.com
 * @date 2023-12-14 08:21
 */
@Configuration
public class JacksonConfig {
    
    /**
     * 默認(rèn)日期時(shí)間格式
     */
    public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    /**
     * 默認(rèn)日期格式
     */
    public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
    /**
     * 默認(rèn)時(shí)間格式
     */
    public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";
    
    /**
     * LocalDate轉(zhuǎn)換器，用于轉(zhuǎn)換RequestParam和PathVariable參數(shù)
     */
    @Bean
    public Converter<String, LocalDate> localDateConverter() {
        return new Converter<String, LocalDate>() {
            @Override
            public LocalDate convert(String source) {
                return LocalDate.parse(source, DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT));
            }
        };
    }
    
    /**
     * LocalDateTime轉(zhuǎn)換器，用于轉(zhuǎn)換RequestParam和PathVariable參數(shù)
     */
    @Bean
    public Converter<String, LocalDateTime> localDateTimeConverter() {
        return new Converter<String, LocalDateTime>() {
            @Override
            public LocalDateTime convert(String source) {
                return LocalDate.parse(source, DateTimeFormatter.ofPattern(getPattern(source))).atStartOfDay();
            }
        };
    }
    
    private String getPattern(String source) {
        int length = source.length();
        if (length == DEFAULT_DATE_TIME_FORMAT.length()) return DEFAULT_DATE_TIME_FORMAT;
        if (length == DEFAULT_DATE_FORMAT.length()) return DEFAULT_DATE_FORMAT;
        throw new RuntimeException("請(qǐng)使用合適的日期格式。例如，" + DEFAULT_DATE_TIME_FORMAT + "、" + DEFAULT_DATE_FORMAT);
    }
    
    /**
     * LocalTime轉(zhuǎn)換器，用于轉(zhuǎn)換RequestParam和PathVariable參數(shù)
     */
    @Bean
    public Converter<String, LocalTime> localTimeConverter() {
        return new Converter<String, LocalTime>() {
            @Override
            public LocalTime convert(String source) {
                return LocalTime.parse(source, DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT));
            }
        };
    }
    
    /**
     * Date轉(zhuǎn)換器，用于轉(zhuǎn)換RequestParam和PathVariable參數(shù)
     */
    @Bean
    public Converter<String, Date> dateConverter() {
        return new Converter<String, Date>() {
            @Override
            public Date convert(String source) {
                SimpleDateFormat format = new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT);
                try {
                    return format.parse(source);
                } catch (ParseException e) {
                    throw new RuntimeException(e);
                }
            }
        };
    }
    
    
    /**
     * Json序列化和反序列化轉(zhuǎn)換器，用于轉(zhuǎn)換Post請(qǐng)求體中的json以及將我們的對(duì)象序列化為返回響應(yīng)的json
     */
    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        objectMapper.disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
        objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        
        // LocalDateTime系列序列化和反序列化模塊，繼承自jsr310，我們?cè)谶@里修改了日期格式
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        javaTimeModule.addSerializer(LocalDateTime.class,
                new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
        javaTimeModule.addDeserializer(LocalDateTime.class,
                new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)));
        javaTimeModule.addDeserializer(LocalDate.class,
                new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)));
        javaTimeModule.addDeserializer(LocalTime.class,
                new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));
        
        
        // Date序列化和反序列化
        javaTimeModule.addSerializer(Date.class, new JsonSerializer<Date>() {
            @Override
            public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
                SimpleDateFormat formatter = new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT);
                String formattedDate = formatter.format(date);
                jsonGenerator.writeString(formattedDate);
            }
        });
        javaTimeModule.addDeserializer(Date.class, new JsonDeserializer<Date>() {
            @Override
            public Date deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException,
                    JsonProcessingException {
                SimpleDateFormat format = new SimpleDateFormat(DEFAULT_DATE_TIME_FORMAT);
                String date = jsonParser.getText();
                try {
                    return format.parse(date);
                } catch (ParseException e) {
                    throw new RuntimeException(e);
                }
            }
        });
        
        javaTimeModule.addSerializer(Date.class, new JsonSerializer<Date>() {
            @Override
            public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
                SimpleDateFormat formatter = new SimpleDateFormat(DEFAULT_DATE_FORMAT);
                String formattedDate = formatter.format(date);
                jsonGenerator.writeString(formattedDate);
            }
        });
        javaTimeModule.addDeserializer(Date.class, new JsonDeserializer<Date>() {
            @Override
            public Date deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException,
                    JsonProcessingException {
                SimpleDateFormat format = new SimpleDateFormat(DEFAULT_DATE_FORMAT);
                String date = jsonParser.getText();
                try {
                    return format.parse(date);
                } catch (ParseException e) {
                    throw new RuntimeException(e);
                }
            }
        });
        
        objectMapper.registerModule(javaTimeModule);
        return objectMapper;
    }
    
}

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