com.fasterxml.jackson.databind.JsonNode.path()方法的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中com.fasterxml.jackson.databind.JsonNode.path()方法的一些代码示例，展示了JsonNode.path()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。JsonNode.path()方法的具体详情如下：
包路径：com.fasterxml.jackson.databind.JsonNode
类名称：JsonNode
方法名：path

JsonNode.path介绍

[英]This method is similar to #get(int), except that instead of returning null if no such element exists (due to index being out of range, or this node not being an array), a "missing node" (node that returns true for #isMissingNode) will be returned. This allows for convenient and safe chained access via path calls.
[中]此方法与#get（int）类似，只是如果不存在此类元素（由于索引超出范围，或者此节点不是数组），则不会返回null，而是返回“缺少的节点”（为#isMissingNode返回true的节点）。这允许通过路径调用进行方便和安全的链接访问。

代码示例

代码示例来源：origin: liferay/liferay-portal

/**
 * Parses the responseJsonNode JsonNode of the form
 *
 * @return description of the Form or empty string if not present in the
 *         String
 */
@Override
public String getDescription() {
  JsonNode jsonNode = responseJsonNode.path(
    HydraConstants.FieldNames.DESCRIPTION);
  return jsonNode.asText();
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private boolean isObject(JsonNode node) {
  return node.path("type").asText().equals("object");
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private boolean isArray(JsonNode node) {
  return node.path("type").asText().equals("array");
}

代码示例来源：origin: knowm/XChange

private CoinbaseAddress getAddressFromNode(JsonNode addressNode)
   throws com.fasterxml.jackson.databind.exc.InvalidFormatException {
  final JsonNode nestedAddressNode = addressNode.path("address");
  final String address = nestedAddressNode.path("address").asText();
  final String callbackUrl = nestedAddressNode.path("callback_url").asText();
  final String label = nestedAddressNode.path("label").asText();
  final Date createdAt =
    DateUtils.fromISO8601DateString(nestedAddressNode.path("created_at").asText());
  return new CoinbaseAddress(address, callbackUrl, label, createdAt);
 }
}

代码示例来源：origin: Activiti/Activiti

protected boolean isEqualToCurrentLocalizationValue(String language,
                          String id,
                          String propertyName,
                          String propertyValue,
                          ObjectNode infoNode) {
  boolean isEqual = false;
  JsonNode localizationNode = infoNode.path("localization").path(language).path(id).path(propertyName);
  if (!localizationNode.isMissingNode() && !localizationNode.isNull() && localizationNode.asText().equals(propertyValue)) {
    isEqual = true;
  }
  return isEqual;
}

代码示例来源：origin: knowm/XChange

public static CoinbaseMoney getCoinbaseMoneyFromNode(JsonNode node) {
 final String amount = node.path("amount").asText();
 final String currency = node.path("currency").asText();
 return new CoinbaseMoney(currency, new BigDecimal(amount));
}

代码示例来源：origin: knowm/XChange

@Override
 public BitmexFee deserialize(JsonParser jsonParser, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  ObjectCodec oc = jsonParser.getCodec();
  JsonNode node = oc.readTree(jsonParser);
  BigDecimal volume = new BigDecimal(node.path(0).asText());
  BigDecimal fee = new BigDecimal(node.path(1).asText());
  return new BitmexFee(volume, fee);
 }
}

代码示例来源：origin: knowm/XChange

@Override
 public KrakenFee deserialize(JsonParser jsonParser, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  ObjectCodec oc = jsonParser.getCodec();
  JsonNode node = oc.readTree(jsonParser);
  BigDecimal volume = new BigDecimal(node.path(0).asText());
  BigDecimal fee = new BigDecimal(node.path(1).asText());
  return new KrakenFee(volume, fee);
 }
}

代码示例来源：origin: knowm/XChange

@Override
 public GateioPublicOrder deserialize(JsonParser jp, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  final ObjectCodec oc = jp.getCodec();
  final JsonNode tickerNode = oc.readTree(jp);
  final BigDecimal price = new BigDecimal(tickerNode.path(0).asText());
  final BigDecimal amount = new BigDecimal(tickerNode.path(1).asText());
  return new GateioPublicOrder(price, amount);
 }
}

代码示例来源：origin: Graylog2/graylog2-server

public Set<String> getClosedIndices(final Collection<String> indices) {
  final JsonNode catIndices = catIndices(indices, "index", "status");
  final ImmutableSet.Builder<String> closedIndices = ImmutableSet.builder();
  for (JsonNode jsonElement : catIndices) {
    if (jsonElement.isObject()) {
      final String index = jsonElement.path("index").asText(null);
      final String status = jsonElement.path("status").asText(null);
      if (index != null && "close".equals(status)) {
        closedIndices.add(index);
      }
    }
  }
  return closedIndices.build();
}

代码示例来源：origin: Graylog2/graylog2-server

private static QueryParsingException buildQueryParsingException(Supplier<String> errorMessage,
                                JsonNode rootCause,
                                List<String> reasons) {
  final JsonNode lineJson = rootCause.path("line");
  final Integer line = lineJson.isInt() ? lineJson.asInt() : null;
  final JsonNode columnJson = rootCause.path("col");
  final Integer column = columnJson.isInt() ? columnJson.asInt() : null;
  final String index = rootCause.path("index").asText(null);
  return new QueryParsingException(errorMessage.get(), line, column, index, reasons);
}

代码示例来源：origin: knowm/XChange

@Override
 public KrakenPublicOrder deserialize(JsonParser jsonParser, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  ObjectCodec oc = jsonParser.getCodec();
  JsonNode node = oc.readTree(jsonParser);
  if (node.isArray()) {
   BigDecimal price = new BigDecimal(node.path(0).asText());
   BigDecimal volume = new BigDecimal(node.path(1).asText());
   long timestamp = node.path(2).asLong();
   return new KrakenPublicOrder(price, volume, timestamp);
  }
  return null;
 }
}

代码示例来源：origin: knowm/XChange

@Override
 public CoinbaseCurrency deserialize(JsonParser jp, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  ObjectCodec oc = jp.getCodec();
  JsonNode node = oc.readTree(jp);
  if (node.isArray()) {
   String name = node.path(0).asText();
   String isoCode = node.path(1).asText();
   return new CoinbaseCurrency(name, isoCode);
  }
  return null;
 }
}

代码示例来源：origin: knowm/XChange

@Override
 public BitZPublicOrder deserialize(JsonParser p, DeserializationContext ctxt)
   throws IOException, JsonProcessingException {
  ObjectCodec oc = p.getCodec();
  JsonNode node = oc.readTree(p);
  if (node.isArray()) {
   BigDecimal price = new BigDecimal(node.path(0).asText());
   BigDecimal volume = new BigDecimal(node.path(1).asText());
   return new BitZPublicOrder(price, volume);
  }
  return null;
 }
}

代码示例来源：origin: Graylog2/graylog2-server

public Set<NodeFileDescriptorStats> getFileDescriptorStats() {
  final JsonNode nodes = catNodes("name", "host", "ip", "fileDescriptorMax");
  final ImmutableSet.Builder<NodeFileDescriptorStats> setBuilder = ImmutableSet.builder();
  for (JsonNode jsonElement : nodes) {
    if (jsonElement.isObject()) {
      final String name = jsonElement.path("name").asText();
      final String host = jsonElement.path("host").asText(null);
      final String ip = jsonElement.path("ip").asText();
      final JsonNode fileDescriptorMax = jsonElement.path("fileDescriptorMax");
      final Long maxFileDescriptors = fileDescriptorMax.isLong() ? fileDescriptorMax.asLong() : null;
      setBuilder.add(NodeFileDescriptorStats.create(name, ip, host, maxFileDescriptors));
    }
  }
  return setBuilder.build();
}

代码示例来源：origin: Graylog2/graylog2-server

public Optional<String> nodeIdToName(String nodeId) {
  return Optional.ofNullable(getNodeInfo(nodeId).path("name").asText(null));
}

代码示例来源：origin: Graylog2/graylog2-server

private String getScrollIdFromResult(JestResult result) {
  return result.getJsonObject().path("_scroll_id").asText();
}

代码示例来源：origin: Graylog2/graylog2-server

public Optional<String> nodeIdToHostName(String nodeId) {
  return Optional.ofNullable(getNodeInfo(nodeId).path("host").asText(null));
}

代码示例来源：origin: knowm/XChange

public static CoinbaseMoney getCoinbaseMoneyFromCents(JsonNode node) {
 final String amount = node.path("cents").asText();
 final String currency = node.path("currency_iso").asText();
 final int numDecimals = (currency.equalsIgnoreCase("BTC")) ? 8 : 2;
 return new CoinbaseMoney(currency, new BigDecimal(amount).movePointLeft(numDecimals));
}

代码示例来源：origin: Graylog2/graylog2-server

private static double timestampValue(final JsonNode json) {
  final JsonNode value = json.path(Message.FIELD_TIMESTAMP);
  if (value.isNumber()) {
    return value.asDouble(-1.0);
  } else if (value.isTextual()) {
    try {
      return Double.parseDouble(value.asText());
    } catch (NumberFormatException e) {
      log.debug("Unable to parse timestamp", e);
      return -1.0;
    }
  } else {
    return -1.0;
  }
}

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