使用 DateTimeFormat.ISO.DATE 配置 Jackson - 不工作

Question

我想在每次请求约会时使用 DateTimeFormat.ISO.DATE 配置 Jackson，例如：

@RequestMapping(value = "income")
  public ResponseEntity calculateIncome(
      @RequestParam(value = "companyName") String companyName,
      @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
      @RequestParam(value = "startDate") LocalDate startDate,
      @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
      @RequestParam(value = "endDate") LocalDate endDate
  )

我已经尝试在 JacksonConfig 中设置它

mapper.enable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

或

mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

还有

mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

或

mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, true);

即使在 application.properties 我也尝试过

spring.jackson.serialization.write_dates_as_timestamps=true

我正在使用 spring-boot 机智以下依赖项

 <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>1.5.10.RELEASE</version>
    </dependency>
<dependency>
      <groupId>com.fasterxml.jackson.datatype</groupId>
      <artifactId>jackson-datatype-jsr310</artifactId>
      <version>${jackson.version}</version>
    </dependency>

我只是不想一遍又一遍地重复相同的@DataTimeFormat 但没有它，我仍然会收到错误消息：

在 IntelJ 中

2018-03-01 15:35:05.539 WARN 8168 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Failed to bind request element: org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.time.LocalDate'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam java.time.LocalDate] for value '2018-02-28'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [2018-02-28]

邮递员

{
    "timestamp": 1519914905555,
    "status": 400,
    "error": "Bad Request",
    "exception": "org.springframework.web.method.annotation.MethodArgumentTypeMismatchException",
    "message": "Failed to convert value of type 'java.lang.String' to required type 'java.time.LocalDate'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam java.time.LocalDate] for value '2018-02-28'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [2018-02-28]",
    "path": "/incVat"
}

或

{
    "timestamp": "2018-03-01T15:36:44.823+0000",
    "status": 400,
    "error": "Bad Request",
    "exception": "org.springframework.web.method.annotation.MethodArgumentTypeMismatchException",
    "message": "Failed to convert value of type 'java.lang.String' to required type 'java.time.LocalDate'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam java.time.LocalDate] for value '2018-02-28'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [2018-02-28]",
    "path": "/incVat"
}

Answer 1

您的pom.xml需要这个：

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

在你的配置中 class:

@Configuration
public class WebConfigurer {

    @Bean
    @Primary // pay attention on this
    public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
        ObjectMapper objectMapper = builder.build();
        objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
        return objectMapper;
    }
}

以及 Jackson2Json 配置：

@Configuration
public class Jackson2JsonConfiguration {
    @Bean
    public Jackson2JsonObjectMapper jackson2JsonObjectMapper(ObjectMapper objectMapper) {
        return new Jackson2JsonObjectMapper(objectMapper);
    }
}

如果不行，试试：

更改 pom.xml 中 jsr310 依赖项的导入顺序。
在属性文件中添加：jackson.serialization.write-dates-as-timestamps = false

我在尝试使这项工作也遇到了奇怪的问题。

作为最后一个选项，您可以迁移到 Spring Boot 2.0，因为他们翻转了 Jackson 配置默认值，将 JSR-310 日期写为 ISO-8601 字符串。

Answer 2

解决方案： 我找到了解决方案 here 这都是关于 LocalDate 的自定义编辑器和 Formatter

的实现

@Bean
  public Formatter<LocalDate> localDateFormatter() {
    return new Formatter<LocalDate>() {
      @Override
      public LocalDate parse(String text, Locale locale) throws ParseException {
        return LocalDate.parse(text, DateTimeFormatter.ISO_DATE);
      }

      @Override
      public String print(LocalDate object, Locale locale) {
        return DateTimeFormatter.ISO_DATE.format(object);
      }
    };
  }

使用 DateTimeFormat.ISO.DATE 配置 Jackson - 不工作

Configure Jackson instead using DateTimeFormat.ISO.DATE - not working

java

jackson

spring-boot

jackson-dataformat-xml