Java JsonParser.getBooleanValue方法代碼示例

import com.fasterxml.jackson.core.JsonParser; //導入方法依賴的package包/類
public static Object getValueFromFieldType(JsonParser parser, MinorType fieldType) throws IOException {
  switch (fieldType) {
    case BIGINT:
      return parser.getLongValue();
    case VARCHAR:
      return parser.getValueAsString();
    case FLOAT4:
      return parser.getFloatValue();
    case BIT:
      return parser.getBooleanValue();
    case LATE:
    case NULL:
      return null;
    default:
      throw new RuntimeException("Unexpected Field type to return value: " + fieldType.toString());
  }
}
 

import com.fasterxml.jackson.core.JsonParser; //導入方法依賴的package包/類
@Override
public Boolean parse(JsonParser jsonParser) throws IOException {
    if (jsonParser.getCurrentToken() == JsonToken.VALUE_NULL) {
        return null;
    } else {
        return jsonParser.getBooleanValue();
    }
}
 

import com.fasterxml.jackson.core.JsonParser; //導入方法依賴的package包/類
@Nullable
private static Object getValue(JsonParser jp) throws IOException {
	switch (jp.currentToken()) {
	case VALUE_FALSE:
	case VALUE_TRUE:
		return jp.getBooleanValue();
	case VALUE_STRING:
		return jp.getValueAsString();
	case VALUE_NUMBER_INT:
		switch (jp.getNumberType()) {
		case INT:
			return jp.getIntValue();
		case LONG:
			return jp.getLongValue();
		case BIG_INTEGER:
			return jp.getBigIntegerValue();
		default:
			return null;
		}
	case VALUE_NUMBER_FLOAT:
		switch (jp.getNumberType()) {
		case FLOAT:
			return jp.getFloatValue();
		case DOUBLE:
			return jp.getDoubleValue();
		case BIG_DECIMAL:
			return jp.getDecimalValue();
		default:
			return null;
		}
	default:
		return null;
	}
}
 

import com.fasterxml.jackson.core.JsonParser; //導入方法依賴的package包/類
/** Parsers a bool value out of the input. */
static boolean parseBool(JsonParser parser) throws IOException {
  JsonToken token = parser.currentToken();
  if (token.isBoolean()) {
    return parser.getBooleanValue();
  }
  String json = parser.getText();
  if (json.equals("true")) {
    return true;
  } else if (json.equals("false")) {
    return false;
  }
  throw new InvalidProtocolBufferException("Invalid bool value: " + json);
}
 

import com.fasterxml.jackson.core.JsonParser; //導入方法依賴的package包/類
@Override
public AttributeValueDto deserialize(JsonParser jp, DeserializationContext ctxt)
    throws IOException, JsonProcessingException {
  JsonToken currentToken = jp.getCurrentToken();
  if (currentToken != null) {
    switch (currentToken) {
      case VALUE_NUMBER_INT:
      case VALUE_NUMBER_FLOAT:
        return new DoubleAttributeValueDto(jp.getDoubleValue());
      case VALUE_STRING:
        return new StringAttributeValueDto(jp.getText());
      case VALUE_TRUE:
        return new BooleanAttributeValueDto(jp.getBooleanValue());
      case VALUE_FALSE:
        return new BooleanAttributeValueDto(jp.getBooleanValue());
      case START_ARRAY: {
        ArrayAttributeValueDto arrayValue = null;
        ObjectMapper mapper = new ObjectMapper();
        ArrayNode arrayNode = mapper.readTree(jp);
        Iterator<JsonNode> it = arrayNode.elements();
        JsonNodeType arrayElemType = null;
        while (it.hasNext()) {
          JsonNode node = it.next();
          if (arrayValue == null) {
            // get the first element type
            arrayElemType = node.getNodeType();
            switch (arrayElemType) {
              case STRING:
                arrayValue = new ArrayOfStringsAttributeValueDto();
                break;
              case NUMBER:
                arrayValue = new ArrayOfDoublesAttributeValueDto();
                break;
              default:
                throw new UnsupportedOperationException(
                    "Unsupported array attribute items type.");
            }
          } else if (arrayElemType != node.getNodeType()) {
            String errString = String.format(
                "Array doesn't support different element types!Expected:{}, Found:{} ",
                arrayElemType, node.getNodeType());
            LOGGER.warn(errString);
            throw new UnsupportedOperationException(errString);
          }
          switch (arrayElemType) {
            case STRING:
              ((ArrayOfStringsAttributeValueDto) arrayValue).add(node.asText());
              break;
            case NUMBER:
              ((ArrayOfDoublesAttributeValueDto) arrayValue).add(node.asDouble());
              break;
            default:
              break;
          }
        }
        return arrayValue;
      }

      default:
        break;
    }
  }

  throw new UnsupportedOperationException("Not supported attribute value yet.");
}