java 8 LocalDateTime

jackson处理JodaTime的序列化和反序列化

1. 引入jackson包

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-joda</artifactId>
</dependency>

2. 类属性添加对应注解

    @JsonSerialize(using = CustomLocalDateTimeSerializer.class)
    @JsonDeserialize(using = CustomLocalDateTimeDeserializer.class)
    private LocalDateTime updateTime;// 修改时间

3、注解类

• 序列化

import org.springframework.beans.factory.annotation.Value;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

public class CustomLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {

    @Value("${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}")
    private String pattern;

    @Override
    public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers)
            throws IOException, JsonProcessingException {
        gen.writeString(DateTimeFormatter.ofPattern(pattern).format(value));
    }

}

• 反序列化

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

import org.springframework.beans.factory.annotation.Value;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;

public class CustomLocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {

    @Value("${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}")
    private String pattern;

    @Override
    public LocalDateTime deserialize(JsonParser jsonParser, DeserializationContext ctxt)
            throws IOException, JsonProcessingException {
        JsonNode node = jsonParser.getCodec().readTree(jsonParser);
        String jsonValue = node.asText();
        return LocalDateTime.parse(jsonValue, DateTimeFormatter.ofPattern(pattern));
    }

}