java - 使用 Post @Consumes(MediaType.ApplicationJson) 隐式解析 LocalDate

Question

这是我的端点，我想在其中添加带有发布请求的“Firma”，但 JSON 无法隐式解析时间戳。

@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response  addFirma(Firma firma){
    firmaFacade.create(firma);
    return Response.ok().build();
}

这些是“Firma”的变量

private int firm1;
private LocalDate firm2;

And this is the JSON-String I sent - LocalDate is NULL

{
"firm1":2,
"firm2":"2017-09-09"
}

但是每当我将 get 请求与测试数据一起使用时，它都会向我显示正确的结果:

@GET
@Produces(MediaType.APPLICATION_JSON)
public Response  findFirma() {
    List<Firma> list = firmaFacade.findAll();
    GenericEntity<List<Firma>> result = new GenericEntity<List<Firma>>(list) { };
    return Response.ok().entity(result).build();
}

请帮助某人。

Answer 1

如果您使用的是 Jackson，请添加以下内容 dependency到您的项目:

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
    <version>${jackson.version}</version>
</dependency>

然后创建一个 ContextResolver对于 ObjectMapper并注册JavaTimeModule :

@Provider
public class ObjectMapperContextResolver implements ContextResolver<ObjectMapper> {

    private final ObjectMapper mapper;

    public ObjectMapperContextResolver() {
        this.mapper = createObjectMapper();
    }

    @Override
    public ObjectMapper getContext(Class<?> type) {
        return mapper;
    }

    private ObjectMapper createObjectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new JavaTimeModule());
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        return mapper;
    }
}