标签：nes convert instance class gis module framework mode configure
JDK8 的LocalDate 系列日期API ,比Date 或者 Calendar 都好用很多,但是在SpringMvc 自动装配会有点小问题
会导致抛出类似异常
default message [Failed to convert property value of type ‘java.lang.String‘ to required type ‘java.time.LocalDateTime‘ for property ‘createDate‘;
nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type ... for value ‘2017-11-03‘;
nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value
解决方法 1 注意 @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") form 或者url 传过来的 日期必须严格根据此 格式,实在没有的,需要在前端补全格式,否则依然会抛出以上异常
@JsonDeserialize(using = LocalDateTimeDeserializer.class) //application/json @JsonSerialize(using = LocalDateTimeSerializer.class) //application/json
//LocalDateTime @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") //application/x-www-form-urlencoded private LocalDateTime createDate;
//LocalDate
@DateTimeFormat(pattern = "yyyy-MM-dd") //application/x-www-form-urlencoded
private LocalDate createDate;
解决方法 2 此方法只处理json 不能处理 application/x-www-form-urlencoded 也就是说 @ModelAttribute 的时候还是需要 @DateTimeFormat 注解
继承 WebMvcConfigurerAdapter
private static class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> { private static final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); @Override public void serialize(LocalDateTime value, JsonGenerator jgen, SerializerProvider provider) throws IOException { jgen.writeString(dateTimeFormatter.format(value)); } } private static class LocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> { @Override public LocalDateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException { String result = StringDeserializer.instance.deserialize(jsonParser, deserializationContext); return LocalDateTimeUtil.UDateToLocalDateTime(DateUtil.parseDate(DateUtil.C_TIME_PATTON_DEFAULT,result)); } }
@Override public void extendMessageConverters(List<HttpMessageConverter<?>> converters) { for (HttpMessageConverter converter : converters) { if (converter instanceof MappingJackson2HttpMessageConverter) { ObjectMapper objectMapper = ((MappingJackson2HttpMessageConverter) converter).getObjectMapper(); SimpleModule module = new SimpleModule(); module.addSerializer(LocalDateTime.class,new LocalDateTimeSerializer()); module.addDeserializer(LocalDateTime.class,new LocalDateTimeDeserializer()); objectMapper.registerModule(module); } } }
标签：nes convert instance class gis module framework mode configure
原文地址：http://www.cnblogs.com/sweetchildomine/p/7807868.html
