java.time.format.DateTimeFormatter.format()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中java.time.format.DateTimeFormatter.format()方法的一些代码示例，展示了DateTimeFormatter.format()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。DateTimeFormatter.format()方法的具体详情如下：
包路径：java.time.format.DateTimeFormatter
类名称：DateTimeFormatter
方法名：format

DateTimeFormatter.format介绍

[英]Formats a date-time object using this formatter.

This formats the date-time to a String using the rules of the formatter.
[中]使用此格式化程序格式化日期时间对象。
这将使用格式化程序的规则将日期时间格式化为字符串。

代码示例

代码示例来源：origin: spring-projects/spring-framework

/**
 * Set the given date under the given header name after formatting it as a string
 * using the RFC-1123 date-time formatter. The equivalent of
 * {@link #set(String, String)} but for date headers.
 * @since 5.0
 */
public void setZonedDateTime(String headerName, ZonedDateTime date) {
  set(headerName, DATE_FORMATTERS[0].format(date));
}

代码示例来源：origin: spring-projects/spring-framework

static String formatDate(long date) {
  Instant instant = Instant.ofEpochMilli(date);
  ZonedDateTime time = ZonedDateTime.ofInstant(instant, GMT);
  return DATE_FORMATTERS[0].format(time);
}

代码示例来源：origin: eclipse-vertx/vert.x

@Override
 public void serialize(Instant value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
  jgen.writeString(ISO_INSTANT.format(value));
 }
}

代码示例来源：origin: eclipse-vertx/vert.x

/**
 * Add a Instant value to the JSON array.
 * <p>
 * JSON has no notion of Temporal data so the Instant will be ISOString encoded, and the String added.
 *
 * @param value  the value
 * @return  a reference to this, so the API can be used fluently
 */
public JsonArray add(Instant value) {
 Objects.requireNonNull(value);
 list.add(ISO_INSTANT.format(value));
 return this;
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public String print(TemporalAccessor partial, Locale locale) {
  return DateTimeContextHolder.getFormatter(this.formatter, locale).format(partial);
}

代码示例来源：origin: prestodb/presto

@Override
public void serialize(ZonedDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException,
    JsonProcessingException {
  /*
   * Serialization of timezone data is unwanted (not ISO). Offset is kept, timezone info is thrown away here.
   *
   * Keeping timezone info is a new feature which needs to be implemented.
   */
  gen.writeFieldName(DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(value));
}

代码示例来源：origin: alibaba/fastjson

private void write(SerializeWriter out, TemporalAccessor object, String format) {
    DateTimeFormatter formatter;
    if ("unixtime".equals(format) && object instanceof ChronoZonedDateTime) {
      long seconds = ((ChronoZonedDateTime) object).toEpochSecond();
      out.writeInt((int) seconds);
      return;
    }

    if (format == formatter_iso8601_pattern) {
      formatter = formatter_iso8601;
    } else {
      formatter = DateTimeFormatter.ofPattern(format);
    }

    String text = formatter.format((TemporalAccessor) object);
    out.writeString(text);
  }
}

代码示例来源：origin: prestodb/presto

@Override
public void serialize(ZonedDateTime value, JsonGenerator g, SerializerProvider provider)
  throws IOException
{
  if (!useTimestamp(provider)) {
    if (shouldWriteWithZoneId(provider)) {
      // write with zone
      g.writeString(DateTimeFormatter.ISO_ZONED_DATE_TIME.format(value));
      return;
    }
  }
  super.serialize(value, g, provider);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void shouldHandleLastModifiedWithHttp304() throws Exception {
  long currentTime = new Date().getTime();
  long oneMinuteAgo = currentTime - (1000 * 60);
  ZonedDateTime dateTime = ofEpochMilli(currentTime).atZone(GMT);
  servletRequest.addHeader(HttpHeaders.IF_MODIFIED_SINCE, RFC_1123_DATE_TIME.format(dateTime));
  ResponseEntity<String> returnValue = ResponseEntity.ok().lastModified(oneMinuteAgo).body("body");
  initStringMessageConversion(TEXT_PLAIN);
  processor.handleReturnValue(returnValue, returnTypeResponseEntity, mavContainer, webRequest);
  assertConditionalResponse(HttpStatus.NOT_MODIFIED, null, null, oneMinuteAgo);
}

代码示例来源：origin: spring-projects/spring-framework

@Test  // SPR-13626
public void shouldHandleIfNoneMatchIfUnmodifiedSince() throws Exception {
  String etagValue = "\"some-etag\"";
  servletRequest.addHeader(HttpHeaders.IF_NONE_MATCH, etagValue);
  ZonedDateTime dateTime = ofEpochMilli(new Date().getTime()).atZone(GMT);
  servletRequest.addHeader(HttpHeaders.IF_UNMODIFIED_SINCE, RFC_1123_DATE_TIME.format(dateTime));
  ResponseEntity<String> returnValue = ResponseEntity.ok().eTag(etagValue).body("body");
  initStringMessageConversion(TEXT_PLAIN);
  processor.handleReturnValue(returnValue, returnTypeResponseEntity, mavContainer, webRequest);
  assertConditionalResponse(HttpStatus.NOT_MODIFIED, null, etagValue, -1);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void createDateTimeFormatterWithTimeZone() {
  factory.setPattern("yyyyMMddHHmmss Z");
  factory.setTimeZone(TEST_TIMEZONE);
  ZoneId dateTimeZone = TEST_TIMEZONE.toZoneId();
  ZonedDateTime dateTime = ZonedDateTime.of(2009, 10, 21, 12, 10, 00, 00, dateTimeZone);
  String offset = (TEST_TIMEZONE.equals(NEW_YORK) ? "-0400" : "+0200");
  assertThat(factory.createDateTimeFormatter().format(dateTime), is("20091021121000 " + offset));
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void shouldNotFailPreconditionForPutRequests() throws Exception {
  servletRequest.setMethod("PUT");
  ZonedDateTime dateTime = ofEpochMilli(new Date().getTime()).atZone(GMT);
  servletRequest.addHeader(HttpHeaders.IF_UNMODIFIED_SINCE, RFC_1123_DATE_TIME.format(dateTime));
  long justModified = dateTime.plus(1, ChronoUnit.SECONDS).toEpochSecond() * 1000;
  ResponseEntity<String> returnValue = ResponseEntity.ok()
      .lastModified(justModified).body("body");
  initStringMessageConversion(TEXT_PLAIN);
  processor.handleReturnValue(returnValue, returnTypeResponseEntity, mavContainer, webRequest);
  assertConditionalResponse(HttpStatus.OK, null, null, justModified);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void createDateTimeFormatterInOrderOfPropertyPriority() {
  factory.setStylePattern("SS");
  String value = applyLocale(factory.createDateTimeFormatter()).format(dateTime);
  assertTrue(value.startsWith("10/21/09"));
  assertTrue(value.endsWith("12:10 PM"));
  factory.setIso(ISO.DATE);
  assertThat(applyLocale(factory.createDateTimeFormatter()).format(dateTime), is("2009-10-21"));
  factory.setPattern("yyyyMMddHHmmss");
  assertThat(factory.createDateTimeFormatter().format(dateTime), is("20091021121000"));
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void createDateTimeFormatterWithPattern() {
  factory = new DateTimeFormatterFactory("yyyyMMddHHmmss");
  DateTimeFormatter formatter = factory.createDateTimeFormatter();
  assertThat(formatter.format(dateTime), is("20091021121000"));
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void shouldHandleETagAndLastModifiedWithHttp304() throws Exception {
  long currentTime = new Date().getTime();
  long oneMinuteAgo = currentTime - (1000 * 60);
  String etagValue = "\"deadb33f8badf00d\"";
  ZonedDateTime dateTime = ofEpochMilli(currentTime).atZone(GMT);
  servletRequest.addHeader(HttpHeaders.IF_MODIFIED_SINCE, RFC_1123_DATE_TIME.format(dateTime));
  servletRequest.addHeader(HttpHeaders.IF_NONE_MATCH, etagValue);
  ResponseEntity<String> returnValue = ResponseEntity.ok()
      .eTag(etagValue).lastModified(oneMinuteAgo).body("body");
  initStringMessageConversion(TEXT_PLAIN);
  processor.handleReturnValue(returnValue, returnTypeResponseEntity, mavContainer, webRequest);
  assertConditionalResponse(HttpStatus.NOT_MODIFIED, null, etagValue, oneMinuteAgo);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void shouldHandleChangedETagAndLastModified() throws Exception {
  long currentTime = new Date().getTime();
  long oneMinuteAgo = currentTime - (1000 * 60);
  String etagValue = "\"deadb33f8badf00d\"";
  String changedEtagValue = "\"changed-etag-value\"";
  ZonedDateTime dateTime = ofEpochMilli(currentTime).atZone(GMT);
  servletRequest.addHeader(HttpHeaders.IF_MODIFIED_SINCE, RFC_1123_DATE_TIME.format(dateTime));
  servletRequest.addHeader(HttpHeaders.IF_NONE_MATCH, etagValue);
  ResponseEntity<String> returnValue = ResponseEntity.ok()
      .eTag(changedEtagValue).lastModified(oneMinuteAgo).body("body");
  initStringMessageConversion(TEXT_PLAIN);
  processor.handleReturnValue(returnValue, returnTypeResponseEntity, mavContainer, webRequest);
  assertConditionalResponse(HttpStatus.OK, null, changedEtagValue, oneMinuteAgo);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void firstZonedDateTime() {
  ZonedDateTime date = ZonedDateTime.of(2017, 6, 22, 22, 22, 0, 0, ZoneId.of("GMT"));
  headers.setZonedDateTime(HttpHeaders.DATE, date);
  assertThat(headers.getFirst(HttpHeaders.DATE), is("Thu, 22 Jun 2017 22:22:00 GMT"));
  assertTrue(headers.getFirstZonedDateTime(HttpHeaders.DATE).isEqual(date));
  headers.clear();
  ZonedDateTime otherDate = ZonedDateTime.of(2010, 12, 18, 10, 20, 0, 0, ZoneId.of("GMT"));
  headers.add(HttpHeaders.DATE, RFC_1123_DATE_TIME.format(date));
  headers.add(HttpHeaders.DATE, RFC_1123_DATE_TIME.format(otherDate));
  assertTrue(headers.getFirstZonedDateTime(HttpHeaders.DATE).isEqual(date));
  // obsolete RFC 850 format
  headers.clear();
  headers.set(HttpHeaders.DATE, "Thursday, 22-Jun-17 22:22:00 GMT");
  assertTrue(headers.getFirstZonedDateTime(HttpHeaders.DATE).isEqual(date));
  // ANSI C's asctime() format
  headers.clear();
  headers.set(HttpHeaders.DATE, "Thu Jun 22 22:22:00 2017");
  assertTrue(headers.getFirstZonedDateTime(HttpHeaders.DATE).isEqual(date));
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void notModifiedLastModified() {
  ZonedDateTime now = ZonedDateTime.now();
  ZonedDateTime oneMinuteBeforeNow = now.minus(1, ChronoUnit.MINUTES);
  RenderingResponse responseMono = RenderingResponse.create("bar")
      .header(HttpHeaders.LAST_MODIFIED, DateTimeFormatter.RFC_1123_DATE_TIME.format(oneMinuteBeforeNow))
      .build()
      .block();
  MockServerHttpRequest request = MockServerHttpRequest.get("http://example.com")
      .header(HttpHeaders.IF_MODIFIED_SINCE,
          DateTimeFormatter.RFC_1123_DATE_TIME.format(now))
      .build();
  MockServerWebExchange exchange = MockServerWebExchange.from(request);
  responseMono.writeTo(exchange, DefaultServerResponseBuilderTests.EMPTY_CONTEXT);
  MockServerHttpResponse response = exchange.getResponse();
  assertEquals(HttpStatus.NOT_MODIFIED, response.getStatusCode());
  StepVerifier.create(response.getBody())
      .expectError(IllegalStateException.class)
      .verify();
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void notModifiedLastModified() {
  ZonedDateTime now = ZonedDateTime.now();
  ZonedDateTime oneMinuteBeforeNow = now.minus(1, ChronoUnit.MINUTES);
  EntityResponse<String> responseMono = EntityResponse.fromObject("bar")
      .lastModified(oneMinuteBeforeNow)
      .build()
      .block();
  MockServerHttpRequest request = MockServerHttpRequest.get("http://example.com")
      .header(HttpHeaders.IF_MODIFIED_SINCE,
          DateTimeFormatter.RFC_1123_DATE_TIME.format(now))
      .build();
  MockServerWebExchange exchange = MockServerWebExchange.from(request);
  responseMono.writeTo(exchange, DefaultServerResponseBuilderTests.EMPTY_CONTEXT);
  MockServerHttpResponse response = exchange.getResponse();
  assertEquals(HttpStatus.NOT_MODIFIED, response.getStatusCode());
  StepVerifier.create(response.getBody())
      .expectError(IllegalStateException.class)
      .verify();
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void notModifiedLastModified() {
  ZonedDateTime now = ZonedDateTime.now();
  ZonedDateTime oneMinuteBeforeNow = now.minus(1, ChronoUnit.MINUTES);
  ServerResponse responseMono = ServerResponse.ok()
      .lastModified(oneMinuteBeforeNow)
      .syncBody("bar")
      .block();
  MockServerHttpRequest request = MockServerHttpRequest.get("http://example.com")
      .header(HttpHeaders.IF_MODIFIED_SINCE,
          DateTimeFormatter.RFC_1123_DATE_TIME.format(now))
      .build();
  MockServerWebExchange exchange = MockServerWebExchange.from(request);
  responseMono.writeTo(exchange, EMPTY_CONTEXT);
  MockServerHttpResponse response = exchange.getResponse();
  assertEquals(HttpStatus.NOT_MODIFIED, response.getStatusCode());
  StepVerifier.create(response.getBody())
      .expectError(IllegalStateException.class)
      .verify();
}

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