无法实例化类型的值

这里我使用java 1.8的LocalDate类。在我的bean中，我把返回类型作为LocalDate。 我发送约会时间为07/01/2017 。 当我试图保存时，我会得到以下exception。

 org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver] (default task-33) Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not instantiate value of type [simple type, class java.time.LocalDate] from String value ('07/01/2017'); no single-String constructor/factory method at [Source: java.io.PushbackInputStream@39959f38; line: 1, column: 650] (through reference chain: com.pro.bean.ParentBean["Soici"]->com.pro.bean.Soici["fecha_de_solicitud"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not instantiate value of type [simple type, class java.time.LocalDate] from String value ('07/01/2017'); no single-String constructor/factory method at [Source: java.io.PushbackInputStream@39959f38; line: 1, column: 650] (through reference chain: com.pro.bean.ParentBean["Soici"]->com.pro.bean.Soici["fecha_de_solici"]) 

Answer 1

添加com.fasterxml.jackson.datatype-jsr310依赖项

然后配置Jackson2ObjectMapper

  @Bean(name = "OBJECT_MAPPER_BEAN") public ObjectMapper jsonObjectMapper() { return Jackson2ObjectMapperBuilder.json() .serializationInclusion(JsonInclude.Include.NON_NULL) // Don't include null values .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS) //ISODate .modules(new JSR310Module()) .build(); } 

消息来源： https ： //blog.oio.de/2015/06/13/add-support-for-java-8-date-time-api-to-jackson-serialized-rest-web-services/