Question

我想在每次请求日期时使用DateTimeFormat.ISO.DATE来配置Jackson：

@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
  )

我已经尝试过在JacksonConfig中设置它

mapper.enable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

或

mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

也

mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

或

mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, true);

甚至在application.properties中我试过

spring.jackson.serialization.write_dates_as_timestamps=true

我使用spring-boot机智跟随依赖

 <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>

我只是不想重复同样的@DataTimeFormat 但没有它，我仍然会收到错误：

在IntelJ

中

2018-03-01 15：35：05.539 WARN 8168 --- [nio-8080-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver：无法绑定请求元件： org.springframework.web.method.annotation.MethodArgumentTypeMismatchException：无法转换类型＆＃39; java.lang.String＆＃39;的值要求的类型＆＃39; java.time.LocalDate＆＃39 ;;嵌套异常是 org.springframework.core.convert.ConversionFailedException：失败从类型[java.lang.String]转换为type [@ org.springframework.web.bind.annotation.RequestParam java.time.LocalDate] for value＆＃39; 2018-02-28＆＃39 ;;嵌套异常是 java.lang.IllegalArgumentException：解析尝试失败的值 [2018年2月28日]

邮差

{ "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

你需要在你的pom.xml中使用它：

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

在您的Configuration类中：

@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;
    }
}

Jackson2Json配置：

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

如果不起作用，请尝试：

更改pom.xml中jsr310依赖项导入的顺序。
添加属性文件：jackson.serialization.write-dates-as-timestamps = false

我尝试做这项工作时遇到了奇怪的问题。

作为最后一个选项，您可以迁移到Spring Boot 2.0，因为他们将Jackson配置默认设置为将JSR-310日期写为ISO-8601字符串。

Answer 2

<强>解：我找到了解决方案here 这完全是关于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而不是工作

2 个答案: