一、Maven依来

<!--jackson依赖 -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.9.3</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.9.3</version>
</dependency>

二、Java Long类型过大时,js会丢失经度问题

1. 定义解析类,进行序列化与反序列化

@Slf4j
public class LongJsonDeserializer extends JsonDeserializer<Long> {

    @Override
    public Long deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
        String value = jsonParser.getText();
        try {
            return value == null ? null : Long.parseLong(value);
        } catch (NumberFormatException e) {
            log.error("解析长整形错误", e);
            return null;
        }
    }
}

public class LongJsonSerializer extends JsonSerializer<Long> {
    @Override
    public void serialize(Long value, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
        String text = (value == null ? null : String.valueOf(value));
        if (text != null) {
            jsonGenerator.writeString(text);
        }
    }
}

2. 添加注解

   @JsonSerialize(using = LongJsonSerializer.class)
    @JsonDeserialize(using = LongJsonDeserializer.class)
    private Long id;

三、日期格式

   @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime createTime;