Question

我使用Spring-Boot 1.2.2使用此代码：

@RequestMapping(value = "/dates", method = RequestMethod.GET)
public Date getDates() {
    return new Date();
}

返回此响应：

1433241315047

如何让它返回"Sun May 31 16:26:43 IDT 2015"？我在Google上找到了一些像mapper.configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, false)这样的例子，但无法弄清楚我应该在哪里写这个...

更新
我在pom.xml中添加了2个依赖项：

<dependency>
        <groupId>joda-time</groupId>
        <artifactId>joda-time</artifactId>
        <version>2.7</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.datatype</groupId>
        <artifactId>jackson-datatype-joda</artifactId>
        <version>2.4.0</version>
    </dependency>

并将spring.jackson.date-format=yyyy-MM-dd添加到application.properties 并且仍然获得时间戳，所以我开始消除所有不必要的代码，发现从@Configuration中删除WebConfiguration.java注释解决了这个问题：

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.util.List;

@Configuration
@EnableWebMvc
@ComponentScan
public class WebConfiguration extends WebMvcConfigurerAdapter {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>>     httpMessageConverters) {

        httpMessageConverters.add(new     MappingJackson2HttpMessageConverter());
    }
}

我想这个类会以某种方式覆盖日期格式设置......那么我可以在这里指定日期格式吗？

Answer 1

添加依赖项在com.fasterxml.jackson.datatype：jackson-datatype-joda上添加依赖项，并将spring.jackson.serialization.write-dates-as-timestamps：false添加到application.properties文件中。

以下是类似的帖子 - json date format in spring-boot

在你的application.properties中添加 spring.jackson.date-format =＃日期格式字符串（例如yyyy-MM-dd HH：mm：ss），或完全限定的日期格式类名称（例如com.fasterxml.jackson.databind.util.ISO8601DateFormat）< / p>

您可以尝试编写自定义日期反序列化程序 -

// CustomDateSerializer类

public class CustomDateSerializer extends JsonSerializer<Date> {   
}

但是，在这种情况下，您需要注释date @JsonSerialize的getter方法（using = CustomDateSerializer.class）

@Configuration
public class WebConfig extends WebMvcConfigurationSupport {

@Bean
public MappingJackson2HttpMessageConverter    customJackson2HttpMessageConverter() {
   MappingJackson2HttpMessageConverter jsonConverter = new           MappingJackson2HttpMessageConverter();
   ObjectMapper objectMapper = new ObjectMapper();
      objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
  jsonConverter.setObjectMapper(objectMapper);
  return jsonConverter;
 }

  @Override
  public void configureMessageConverters(List<HttpMessageConverter<?>>   converters) {
  converters.add(customJackson2HttpMessageConverter());
 super.addDefaultHttpMessageConverters();
}
  }

Answer 2

    if ('serviceWorker' in navigator && 'PushManager' in window) {
      console.log('Service Worker and Push is supported');

      navigator.serviceWorker.register('service-worker.js')
      .then(function(swReg) {
        console.log('Service worker successfully registered.');

        navigator.serviceWorker.ready.then(function() {

          const subscribeOptions = {
            userVisibleOnly: true,
            applicationServerKey: ... // My application server key.
          };

          let promise = swReg.pushManager.subscribe(subscribeOptions)
          console.log(promise) // Promise {[[PromiseStatus]]: "pending", [[PromiseValue]]: undefined}
          promise
          .then(function(pushSubscription) {

            console.log('Received PushSubscription: ', pushSubscription); // Never gets called.
          })
          .catch(function(err) {
            console.error('Unable to subscribe.', err); // Never gets called.
          });
        })
      })
      .catch(function(err) {
        console.error('Unable to register service worker.', err);
      });
    }

中的

spring.jackson.date-format=yyyy-MM-dd无效

Spring Boot - 返回日期（不是时间戳）

2 个答案: