问题：在对象中使用LocalDateTime接收前端时间字符串时报了以下错误（已经加了@DateTimeFormat注解）
Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.time.LocalDateTime` from String "2021-10-02 00:00:00": Failed to deserialize java.time.LocalDateTime: (java.time.format.DateTimeParseException) Text '2021-10-02 00:00:00' could not be parsed at index 10 at [Source: (PushbackInputStream); line: 5, column: 12] (through reference chain: com.abahacker.plug.api.dto.datareports.ReportsQueryDTO["date"]) at com.fasterxml.jackson.databind.exc.InvalidFormatException.from(InvalidFormatException.java:67) at com.fasterxml.jackson.databind.DeserializationContext.weirdStringException(DeserializationContext.java:1851) at com.fasterxml.jackson.databind.DeserializationContext.handleWeirdStringValue(DeserializationContext.java:1079) at com.fasterxml.jackson.datatype.jsr310.deser.JSR310DeserializerBase._handleDateTimeException(JSR310DeserializerBase.java:176) at com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer._fromString(LocalDateTimeDeserializer.java:179) at com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer.deserialize(LocalDateTimeDeserializer.java:81) at com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer.deserialize(LocalDateTimeDeserializer.java:40) at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:402) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:195) at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:322) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4593) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3601) at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:378) ... 60 common frames omitted Caused by: java.time.format.DateTimeParseException: Text '2021-10-02 00:00:00' could not be parsed at index 10 at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949) at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851) at java.time.LocalDateTime.parse(LocalDateTime.java:492) at com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer._fromString(LocalDateTimeDeserializer.java:177) ... 69 common frames omitted
解决方法：
在LocalDateTime 类型的字段上加@JsonFormat注解，如下：
/** * 时间 */ @JsonFormat(shape=JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss") private LocalDateTime date;
