import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Test
void shouldSerializeWithoutAutoDetect() throws JsonProcessingException {
    final ObjectMapper mapper = new ObjectMapper()
            .disable(MapperFeature.AUTO_DETECT_FIELDS)
            .disable(MapperFeature.AUTO_DETECT_GETTERS)
            .disable(MapperFeature.AUTO_DETECT_IS_GETTERS)
            .registerModule(new ProblemModule())
            .registerModule(new ConstraintViolationProblemModule());

    final Violation violation = new Violation("bob", "was missing");
    final ConstraintViolationProblem unit = new ConstraintViolationProblem(BAD_REQUEST, singletonList(violation));

    with(mapper.writeValueAsString(unit))
            .assertThat("status", is(400))
            .assertThat("type", is(ConstraintViolationProblem.TYPE_VALUE))
            .assertThat("title", is("Constraint Violation"))
            .assertThat("violations", hasSize(1))
            .assertThat("violations.*.field", contains("bob"))
            .assertThat("violations.*.message", contains("was missing"));
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Bean
@Primary
public Jackson2ObjectMapperBuilder objectMapperBuilder() {
    Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
    dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
    return builder
            .failOnUnknownProperties(false)
            .dateFormat(dateFormat)
            .serializationInclusion(Include.NON_NULL)
            .modules(new Jdk8Module(), new ProblemModule());
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Bean
@Primary
public ObjectMapper jacksonObjectMapper() {
    final ObjectMapper objectMapper = new ObjectMapper()
            .setPropertyNamingStrategy(CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);

    objectMapper.registerModule(enumModule());
    objectMapper.registerModule(new Jdk8Module());
    objectMapper.registerModule(new ProblemModule());
    objectMapper.registerModule(new JodaModule());
    objectMapper.configure(WRITE_DATES_AS_TIMESTAMPS , false);
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    return objectMapper;
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Test
void shouldSerializeCustomType() throws JsonProcessingException {
    final ObjectMapper mapper = new ObjectMapper()
            .registerModule(new ProblemModule())
            .registerModule(new ConstraintViolationProblemModule());

    final URI type = URI.create("foo");
    final ConstraintViolationProblem unit = new ConstraintViolationProblem(type, BAD_REQUEST, emptyList());

    with(mapper.writeValueAsString(unit))
            .assertThat("type", is("foo"));
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Bean
ProblemModule problemModule() {
    return new ProblemModule();
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
private void configureJsonMapper() {
    Json.mapper.registerModule(new ProblemModule());
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
@Override
protected void configureMessageConverters(final List<HttpMessageConverter<?>> converters) {
    converters.clear();
    converters.add(new MappingJackson2HttpMessageConverter(new ObjectMapper()
            .registerModule(new ProblemModule())));
}
 

import org.zalando.problem.ProblemModule; //导入依赖的package包/类
default ObjectMapper mapper() {
    return new ObjectMapper().registerModule(new ProblemModule());
}