Spring boot 没有从字符串值反序列化的字符串参数构造函数/工厂方法(';2018-12-14';)
这个问题和一个问题几乎相同,但不同之处在于我试图将字符串设置为LocalDate。以下是来自STS的错误: 2018-12-14 00:47:04.507警告6216---[nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver:已解决 [org.springframework.http.converter.httpMessageNodeTableException: JSON分析错误:无法构造java.time.LocalDate的实例: 没有可从中反序列化的字符串参数构造函数/工厂方法 字符串值('2018-12-14');嵌套异常为 com.fasterxml.jackson.databind.JsonMappingException:无法构造 java.time.LocalDate实例:无字符串参数 从字符串值反序列化的构造函数/工厂方法 ('2018-12-14'),位于[来源:java.io。PushbackInputStream@73ff9989; 行:3,列:16](通过参考链: com.xxxxx.xxxxxx.model.request.ReservationRequest[“签入”])] 这是邮递员发来的: { “时间戳”:1544744824516, “状态”:400, “错误”:“错误请求”, “异常”:“org.springframework.http.converter.httpMessageEndableException”, “message”:“JSON解析错误:无法构造java.time.LocalDate的实例:没有字符串参数构造函数/工厂方法 从字符串值('2018-12-14')反序列化;嵌套异常为 com.fasterxml.jackson.databind.JsonMappingException:无法构造 java.time.LocalDate实例:无字符串参数 从字符串值反序列化的构造函数/工厂方法 ('2018-12-14')\n在[来源:java.io。PushbackInputStream@73ff9989; 行:3,列:16](通过参考链: com.xxxxx.xxxxx.model.request.ReservationRequest[\“checkin\”])“, “路径”:“/房间/预订/v1”} 后请求是:Spring boot 没有从字符串值反序列化的字符串参数构造函数/工厂方法(';2018-12-14';),spring-boot,jackson,spring-rest,localdate,Spring Boot,Jackson,Spring Rest,Localdate,这个问题和一个问题几乎相同,但不同之处在于我试图将字符串设置为LocalDate。以下是来自STS的错误: 2018-12-14 00:47:04.507警告6216---[nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver:已解决 [org.springframework.http.converter.httpMessageNodeTableException: JSON分析错误:无法构造java.time.LocalDate的实
{
"id": 12345,
"checkin": "2018-12-14",
"checkout": "2018-12-17"
}
相关类别包括:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
@Configuration
public class ApiConfig {
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.registerModule(new JavaTimeModule());
return new ObjectMapper();
}
@Bean
public ObjectWriter objectWriter(ObjectMapper objectMapper) {
return objectMapper.writerWithDefaultPrettyPrinter();
}
}
及
及
jdk1.8;springBootVersion='1.5.17.RELEASE';名称:“jackson-datatype-jsr310”,版本:“2.9.7”
问题是为什么它不能与LocalDate一起正常工作
更新:尝试了解决方案,并添加了@JsonSerialize和@jsondesialize,两者都不是objectMapper.disable(SerializationFeature.WRITE_DATES_as_timestamp)代码>
或objectMapper.configure(SerializationFeature.WRITE_DATES_作为时间戳,false)代码>
现在看起来是这样的:
public class ReservationRequest {
private Long id;
@JsonSerialize(using = ToStringSerializer.class)
@JsonDeserialize(using = LocalDateDeserializer.class)
//@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
private LocalDate checkin;
@JsonSerialize(using = ToStringSerializer.class)
@JsonDeserialize(using = LocalDateDeserializer.class)
//@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
private LocalDate checkout;
public ReservationRequest() {
super();
}
所以,现在看起来它可以工作了,但我不知道它是否是一个好的解决方案?我认为现在回复我面临的同样问题的帖子已经太迟了,下面的注释很有帮助
@JsonFormat(pattern = "yyyy-MM-dd")
private LocalDate dateOfBirth;
:)我最近遇到了同样的问题,错误的原因是我的json字符串周围有双引号,当我删除它时,它工作得非常好我认为问题就在这里
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.registerModule(new JavaTimeModule());
return new ObjectMapper();
}
您必须返回已配置的objectMapper
,而不是新实例:
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
objectMapper.registerModule(new JavaTimeModule()
.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("M/d/yyyy")))
.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("M/d/yyyy"))))
return objectMapper;
}
试过了,没用。
@JsonFormat(pattern = "yyyy-MM-dd")
private LocalDate dateOfBirth;
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.registerModule(new JavaTimeModule());
return new ObjectMapper();
}
@Bean
public ObjectMapper objectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
objectMapper.registerModule(new JavaTimeModule()
.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("M/d/yyyy")))
.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("M/d/yyyy"))))
return objectMapper;
}