Java FieldUtils.readField方法代碼示例

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
/**
 * Given an {@link Element}, {@link #some} filter's its fields using the given predicate, creates
 * a property key and value for each field, flattens them, and returns it as a {@link List}.
 *
 * @throws IllegalArgumentException, if it finds a property that doesn't have a value, and that
 *                                   property corresponds to a {@link org.apache.tinkerpop.gremlin.object.model.PrimaryKey}
 *                                   or {@link org.apache.tinkerpop.gremlin.object.model.OrderingKey}
 *                                   field.
 */
@SneakyThrows
public static <E extends Element> List<Object> some(E element, Predicate<Field> predicate) {
  List<Object> properties = new ArrayList<>();
  for (Field field : fields(element, predicate)) {
    Object propertyValue = FieldUtils.readField(field, element);
    if (isMissing(propertyValue)) {
      if (isKey(field)) {
        throw Element.Exceptions.requiredKeysMissing(element.getClass(), propertyKey(field));
      }
      continue;
    }
    String propertyName = propertyKey(field);
    properties.add(propertyName);
    if (isPrimitive(field)) {
      if (field.getType().isEnum()) {
        properties.add(((Enum) propertyValue).name());
      } else {
        properties.add(propertyValue);
      }
    } else {
      properties.add(propertyValue);
    }
  }
  return properties;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@Override
public boolean isValid(Object value, ConstraintValidatorContext context) {
    try {
        String typeKey = (String) FieldUtils.readField(value, typeKeyField, true);
        if (value instanceof XmEntity) {
            return xmEntitySpecService.getAllKeys().containsKey(typeKey);
        } else {
            XmEntity entity = (XmEntity) FieldUtils.readField(value, entityField, true);
            if (entity == null) {
                return true;
            }
            String entityTypeKey = entity.getTypeKey();
            Map<String, Set<String>> keysByEntityType = xmEntitySpecService.getAllKeys().get(entityTypeKey);
            return !(keysByEntityType == null || keysByEntityType.get(getClassName(value)) == null)
                            && keysByEntityType.get(getClassName(value)).contains(typeKey);
        }
    } catch (IllegalAccessException e) {
        log.debug("Could not get keys for validation", e);
        return false;
    }
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@Override
public void handle(Connection connection, ChatMessagePacket packet)
{
	Field connectionsField = FieldUtils.getField(Server.class, "connections", true);
	
	Connection[] connections;
	try
	{
		connections = (Connection[])FieldUtils.readField(connectionsField, server, true);
	} catch (IllegalAccessException e)
	{
		throw new RuntimeException(e);
	}
	ChatMessageReplyPacket newPacket = new ChatMessageReplyPacket();
	Character sender = gameData.getUserCharacterByConnectionId(connection.getID());
	String nickname = sender.getNickname();
	newPacket.setMessage(packet.getMessage());
	newPacket.setNickname(nickname);
	Character character;
	for(Connection client : connections)		
		if((character = gameData.getUserCharacterByConnectionId(client.getID())) != null)
		{
			newPacket.setSourceCharacterId(character.getId());
			server.sendToTCP(client.getID(), newPacket);
		}
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@SuppressWarnings("unchecked")
private void closeWebDriverPool() {
  try {
    Runtime runtime = (Runtime) FieldUtils.readField(this, "runtime", true);
    Collection<? extends Backend> backends =
        (Collection<? extends Backend>) FieldUtils.readField(runtime, "backends", true);
    for (Backend backend : backends) {
      if (backend instanceof JavaBackend) {
        GuiceFactory factory =
            (GuiceFactory) FieldUtils.readField(backend, "objectFactory", true);
        WebDriverRegistry webDriverRegistry = factory.getInstance(WebDriverRegistry.class);
        webDriverRegistry.shutdown();
      }
    }
  } catch (IllegalAccessException e) {
    LOG.error("unable to close web driver pool", e);
  }
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
protected String getResourcePath() {

		String id = getObjectId();
		String account_id = getAccountId();
		String resourcePath = null;
		
		try {
		
			String resource = (String) FieldUtils.readField(resourceObject, "RESOURCE", true);
			String resourceCollection = (String) FieldUtils.readField(resourceObject, "RESOURCE_COLLECTION", true);
			
			if (null != resourceCollection) {
				
				resourcePath =  (id != null) ? resource.replace("{account_id}", account_id).replace("{id}", id)
						: resourceCollection.replace("{account_id}", account_id);
			}

		} catch (Exception e) {
			log.warn("unable to read 'RESOURCE' or 'RESOURCE_COLLECTION', errror : {}", e.toString());
			// return null;
		}
		log.info("resource path = "+resourcePath);
		return resourcePath;
	}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
/**
 * Gets the property.
 *
 * @param obj the obj
 * @param name the name
 * @param defaultValue the default value
 * @param forced whether or not to force access to the field
 * @return the property
 */
protected Object getProperty(Object obj, String name, Object defaultValue, boolean forced) {
  try {
    if (forced) {
      return FieldUtils.readField(obj, name, forced);
    } else {
      return PropertyUtils.isReadable(obj, name) ? PropertyUtils.getProperty(obj, name)
          : defaultValue;
    }
  } catch (IllegalArgumentException | IllegalAccessException | InvocationTargetException
      | NoSuchMethodException e) {
    logger.error("", e);
  }
  logger.debug("Could not access property '{}' of object '{}'", name, obj);
  return defaultValue;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
private void addItemToCollection(Object object, String fieldName, Object value)
    throws IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException {
  Object collection = null;
  try {
    collection = FieldUtils.readField(object, fieldName);
    if (!(collection instanceof Collection)) {
      collection = null;
    }
  } catch (Exception e) {
    // Do nothing -> just using this to check if we have to use the field or the addXxxx() method
  }

  if (collection != null) {
    MethodUtils.invokeExactMethod(collection, "add", new Object[]{value}, new Class[]{Object.class});
  } else {
    MethodUtils.invokeExactMethod(object, "add" + StringUtils.capitalize(fieldName), value);
  }
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
private boolean shouldInvoke(MessageContext messageContext) throws Exception {
	List<EndpointMapping> endpointMappings = messageDispatcher.getEndpointMappings();
	// There should be only one endpoint mapped in the module: check it
	Assert.isTrue(endpointMappings != null && endpointMappings.size() == 1);

	EndpointMapping endpointMapping = endpointMappings.iterator().next();
	for (EndpointInterceptor endpointInterceptor : endpointMapping.getEndpoint(messageContext).getInterceptors()) {
		// Check to see if the interceptor is directly an instance of a service specific interceptor.
		// If so, we don't have to fall back to our default delegate
		if (endpointInterceptor instanceof ServiceSpecificEndpointInterceptor) {
			return false;
		}

		// Check to see if the interceptor is decorated by DelegatingSmartEndpointInterceptor
		// Unfortunately there is no standard API way of detecting this, so we need some reflection.
		// If so, check that the decorated instance is instance of a service specific interceptor.
		// If so, we don't have to fall back to our default delegate
		if (endpointInterceptor instanceof DelegatingSmartEndpointInterceptor) {
			if (FieldUtils.readField(endpointInterceptor, "delegate", true) instanceof ServiceSpecificEndpointInterceptor) {
				return false;
			}
		}
	}
	return true;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
public static Map<String, Object> getBXMLFieldValues(Bindable obj) throws IllegalAccessException {
    Map<String, Object> result = new HashMap<>();
    Class<?> type = obj.getClass();
    Field[] allFields = FieldUtils.getAllFields(type);

    if (ArrayUtils.isNotEmpty(allFields)) {
        for (Field field : allFields) {
            BXML bxmlAnnotation = field.getAnnotation(BXML.class);

            if (bxmlAnnotation != null) {
                String id = bxmlAnnotation.id();
                Object fieldValue = FieldUtils.readField(field, obj, true);

                if (StringUtils.isNotBlank(id)) {
                    result.put(id, fieldValue);
                } else {
                    result.put(field.getName(), fieldValue);
                }
            }
        }
    }

    return result;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
public static Map<Object, ModContainer> getForgeListenerOwners() {
    try {
        return ((Map<Object, ModContainer>) FieldUtils.readField(MinecraftForge.EVENT_BUS, "listenerOwners", true));
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return null;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
/**
 * Get the keys of the element that have missing values.
 */
@SneakyThrows
public static <E extends Element> List<String> nullKeys(E element) {
  List<String> keys = new ArrayList<>();
  for (Field field : fields(element)) {
    Object propertyValue = FieldUtils.readField(field, element);
    if (isMissing(propertyValue)) {
      String propertyName = propertyKey(field);
      keys.add(propertyName);
    }
  }
  return keys;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@Override
protected ProcessInfoBuilder makePackageProcessBuilder(AaptPackageConfig config) throws AaptException {
    ProcessInfoBuilder processInfoBuilder = super.makePackageProcessBuilder(config);

    List<String> args = null;
    try {
        args = (List<String>) FieldUtils.readField(processInfoBuilder, "mArgs", true);
    } catch (IllegalAccessException e) {
        throw new GradleException("getargs exception", e);
    }

    //args.remove("--no-version-vectors");
    //
    ////Does not generate manifest_keep.txt file
    //int indexD = args.indexOf("-D");
    //if (indexD > 0){
    //    args.remove(indexD);
    //    args.remove(indexD);
    //}

    //Join the outputs of the R.txt file
    String sybolOutputDir = config.getSymbolOutputDir().getAbsolutePath();
    if (!args.contains("--output-text-symbols") && null != sybolOutputDir) {
        args.add("--output-text-symbols");
        args.add(sybolOutputDir);
    }

    return processInfoBuilder;
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@SuppressWarnings("unchecked")
public static <T> T readFieldOfType(Object o, Class<T> t) throws IllegalAccessException
{

       for (Field f : FieldUtils.getAllFields(o.getClass()))
	{
       	if (!Modifier.isStatic(f.getModifiers()) && f.getType().equals(t))
       	{
       		return (T) FieldUtils.readField(f, o, true);
       	}
	}

       throw new IllegalAccessException();
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
@SuppressWarnings("unchecked")
public static <C,T> C readParameterizedFieldOfType(Object o, Class<C> collection, Class<T> genertic) throws IllegalAccessException
{

       for (Field f : FieldUtils.getAllFields(o.getClass()))
	{
       	if (!Modifier.isStatic(f.getModifiers()) && f.getType().equals(collection) && f.getGenericType().equals(genertic))
       	{
       		return (C) FieldUtils.readField(f, o, true);
       	}
	}

       throw new IllegalAccessException();
}
 

import org.apache.commons.lang3.reflect.FieldUtils; //導入方法依賴的package包/類
private boolean hasImage(CallbackMessage<CallbackWallPost> message, List<EmbedBuilder> builders) {
    EmbedBuilder prevBuilder = CollectionUtils.isNotEmpty(builders) ? builders.get(builders.size() - 1) : null;
    try {
        if (prevBuilder != null && FieldUtils.readField(prevBuilder, "image", true) != null) {
            return true;
        }
    } catch (IllegalAccessException e) {
        throw new RuntimeException(e);
    }
    return false;
}