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Spring boot 2:ConverterNotFoundException:找不到能够从类型转换的转换器[java.ZonedTime时间]键入[日期类型]

zoneddatetime spring-boot date spring java

Stéphane GRILLON · 技术社区 · 6 年前

@SpringBootTest ),我使用 org.springframework.test.web.servlet.MockMvc

@Test
@WithMockUser(roles = {"ADMIN"})
public void testGetSearchByFoodIdWithAdmin() throws Exception {
    final ResultActions resultActions = mockMvc.perform(get(RESOURCE_URL + "/search/findByFooId?fooId=123"))
                .andExpect(status().isOk());
}

我有一个转换器:

public class ZonedDateTimeToDateConverter implements Converter<ZonedDateTime, Date> {
    @Override
    public Date convert(final ZonedDateTime source) {
        return source == null ? null : Date.from(source.toInstant());
    }
}

public class DateToZonedDateTimeConverter implements Converter<Date, ZonedDateTime> {
    @Override
    public ZonedDateTime convert(final Date source) {
        return source == null ? null : ofInstant(source.toInstant(), systemDefault());
    }
}

@Configuration
@EnableMongoAuditing(dateTimeProviderRef = "dateTimeProvider")
public class MongoConfiguration {

    @Autowired
    MongoDbFactory mongoDbFactory;

    @Bean
    public MongoCustomConversions customConversions() {
        List<Converter<?, ?>> converters = new ArrayList<>();
        converters.add(new DateToZonedDateTimeConverter());
        converters.add(new ZonedDateTimeToDateConverter());
        return new MongoCustomConversions(converters);
    }

    @Bean
    public MongoTemplate mongoTemplate() throws Exception {
        MappingMongoConverter converter = getDefaultMongoConverter();
        //converter.afterPropertiesSet();
        MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory, converter);
        return mongoTemplate;
    }

    @Bean
    public MappingMongoConverter getDefaultMongoConverter() throws Exception {
        MappingMongoConverter converter = new MappingMongoConverter(
                new DefaultDbRefResolver(mongoDbFactory), new MongoMappingContext());
        converter.setCustomConversions(customConversions());
        return converter;
    }

}

我有另一种弹簧配置:

@Component
public class MyWebMvcConfigurer extends WebMvcConfigurerAdapter {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new DateToZonedDateTimeConverter());
        registry.addConverter(new ZonedDateTimeToDateConverter());
    }

}

我有个错误:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.time.ZonedDateTime] to type [java.util.Date]

我使用Spring数据Rest

@RepositoryRestResource(collectionResourceRel = "foo", path = "foo")
public interface FooRepository extends MongoRepository<Foo, String> {

    Foo findByFooId(@Param("fooId") String fooId);

}

我的 Foo 班级:

@Document
@NoArgsConstructor
@AllArgsConstructor
@Builder
@Data
public class Foo {

    @Id
    private String keyid;

    @NotNull
    private String fooId;

    @CreatedDate
    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
    private ZonedDateTime creationDate;

    @LastModifiedDate
    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
    private ZonedDateTime updateDate;
}

CustomizedRestMvcConfiguration 实现了RepositoryRestConfigurer`但并不是我唯一的问题:

@Configuration
@EnableWebMvc
public class CustomizedRestMvcConfiguration implements RepositoryRestConfigurer {

    @Bean
    public DateToZonedDateTimeConverter dateToZonedDateTimeConverter() {
        return new DateToZonedDateTimeConverter();
    }

    @Bean
    public ZonedDateTimeToDateConverter zonedDateTimeToDateConverter() {
        return new ZonedDateTimeToDateConverter();
    }

    @Override
    public void configureConversionService(ConfigurableConversionService conversionService) {
        conversionService.addConverter(dateToZonedDateTimeConverter());
        conversionService.addConverter(zonedDateTimeToDateConverter());
    }

}

2 回复 | 直到 6 年前

Stéphane GRILLON 6 年前

MyWebMvcConfigurer 延伸 WebMvcConfigurerAdapter 已弃用 WebMvcConfigurer 接口:

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        // ...
    }
}

看到了吗 Type Conversion 还要注意不同的注释!

Kai 5 年前

是的,sgrillon答案不起作用,因为问题不在Spring转换中,而是在MongoDB的Jackson-JSON转换器中。

@文档注释+ZonedDateTime是个问题。解决方案正如sgrillion建议的那样:“converter”而不是Spring converter/handler映射。你需要把它添加到MongoTemplate。

ZonedDateTime with MongoDB