场景:
实体类Entity 部分属性:java
/** * 建立时间 */ @Column(name = "gmt_create") protected Timestamp gmtCreate; /** * 修改时间 */ @Column(name = "gmt_modified") protected Timestamp gmtModified;
controller层采用实体类接收参数:web
@PostMapping("/testFeign") public void testFeign(@RequestBody JourneyEntity journeyEntity) { //业务代码 }
Postman 发起post请求:
参数以下:
{
“journeyId”:“fd96adc11d6d4e11a0c184297dbedc98”,
“name”:“测试版本下线”,
“version”:“3”,
“maxVersion”:“4”,
“audience”:“CROWD”,
“type”:“service”,
“gmtCreate”:“2020-05-27 10:59:40”,–字符串类型参数
“conflictResolution”:“concurrent”,
“layoutContent”:“hhhhh”,
“policyDelivery”:"{‘type’:‘IMMEDIATELY’}"
}spring
结果报错以下:sql
Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.sql.Timestamp` from String "2020-05-27 10:59:40": not a valid representation (error: Failed to parse Date value '2020-05-27 10:59:40': Cannot parse date "2020-05-27 10:59:40": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSZ', parsing fails (leniency? null)) at [Source: (PushbackInputStream); line: 8, column: 14] (through reference chain: com.aliyun.opaas.journey.dal.entity.JourneyEntity["gmtCreate"]) at com.fasterxml.jackson.databind.exc.InvalidFormatException.from(InvalidFormatException.java:67) at com.fasterxml.jackson.databind.DeserializationContext.weirdStringException(DeserializationContext.java:1549) at com.fasterxml.jackson.databind.DeserializationContext.handleWeirdStringValue(DeserializationContext.java:911) at com.fasterxml.jackson.databind.deser.std.StdDeserializer._parseDate(StdDeserializer.java:524) at com.fasterxml.jackson.databind.deser.std.StdDeserializer._parseDate(StdDeserializer.java:467) at com.fasterxml.jackson.databind.deser.std.DateDeserializers$DateBasedDeserializer._parseDate(DateDeserializers.java:195) at com.fasterxml.jackson.databind.deser.std.DateDeserializers$TimestampDeserializer.deserialize(DateDeserializers.java:335) at com.fasterxml.jackson.databind.deser.std.DateDeserializers$TimestampDeserializer.deserialize(DateDeserializers.java:320) at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:127) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:369) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:159) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3084) at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:239) ... 66 more
异常处可明显看到,将String 反序列化成Timestamp类型时报错,反序列化用的格式是:
yyyy-MM-dd’T’HH:mm:ss.SSSZ,而String的格式是:yyyy-MM-dd HH:mm:ssjson
解决办法:app
@Configuration public class WebConfig implements WebMvcConfigurer { @Autowired private Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder; @Override public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { ObjectMapper mapper = jackson2ObjectMapperBuilder.build(); mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")); converters.add(0, new MappingJackson2HttpMessageConverter(mapper)); } }
@Column(name = "gmt_create") @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone="GMT+8") protected Timestamp gmtCreate;
这样可保证不会影响全局,只针对单个属性进行json转换ide
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8 spring.jackson.default-property-inclusion=ALWAYS
不生效缘由:
WebMvcConfigurer 配置类里已经设置了new MappingJackson2HttpMessageConverter()svg
@Override public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { /*ObjectMapper mapper = jackson2ObjectMapperBuilder.build(); mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));*/ /** *此处已经设置了MappingJackson2HttpMessageConverter jackson转换器,可是未设置任何转换格式,因此当须要反序列化String类型为Timestamp类型时, 用的格式仍然Jackson默认的类型格式-yyyy-MM-dd'T'HH:mm:ss.SSSZ, 致使反序列化失败,报错,并且此处设置便会覆盖配置文件的 jackson的配置项,配置一直不生效的缘由就是这里 **/ converters.add(0, new MappingJackson2HttpMessageConverter()); }
解决办法就是:有此处设置MappingJackson2HttpMessageConverter 时,只能由此处指定了date-format转换格式才能有效,如上代码中,ObjectMapper 来设置dateFormatpost
ObjectMapper mapper = jackson2ObjectMapperBuilder.build(); mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")); /** *此处已经设置了MappingJackson2HttpMessageConverter jackson转换器,可是未设置任何转换格式,因此当须要反序列化String类型为Timestamp类型时, 用的格式仍然Jackson默认的类型格式-yyyy-MM-dd'T'HH:mm:ss.SSSZ, 致使反序列化失败,报错,并且此处设置便会覆盖配置文件的 jackson的配置项,配置一直不生效的缘由就是这里 **/ converters.add(0, new MappingJackson2HttpMessageConverter(mapper));