本文整理了Java中com.google.gwt.core.ext.typeinfo.JField.isAnnotationPresent()方法的一些代码示例，展示了JField.isAnnotationPresent()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。JField.isAnnotationPresent()方法的具体详情如下：
包路径：com.google.gwt.core.ext.typeinfo.JField
类名称：JField
方法名：isAnnotationPresent

JField.isAnnotationPresent介绍

暂无

代码示例

代码示例来源：origin: hpehl/piriti

@Override
public boolean isNative()
{
  return field.isAnnotationPresent(Native.class);
}

代码示例来源：origin: org.jboss.errai/errai-widgets

public String init(TypeOracle oracle, JField targetWidget, JType targetType, JField targetFieldType,
           JField targetEntityField, String variable, List<JField> fields) {
  StringBuilder builder = new StringBuilder(variable + ".setDefaultTitleValues(new String[] {");

  Iterator<JField> iter = fields.iterator();
  JField fld;
  String fieldName;
  while (iter.hasNext()) {
   if ((fld = iter.next()).isAnnotationPresent(FriendlyName.class)) {
    fieldName = fld.getAnnotation(FriendlyName.class).value();
   }
   else {
    fieldName = fld.getName();
   }

   builder.append("\"").append(fieldName).append("\"");
   if (iter.hasNext()) builder.append(", ");
  }

  return builder.append("});").toString();
 }
}

代码示例来源：origin: hpehl/piriti

@Override
public Class<? extends InstanceCreator<?, ?>> getInstanceCreator()
{
  Class<? extends InstanceCreator<?, ?>> instanceCreator = null;
  if (field.isAnnotationPresent(CreateWith.class))
  {
    instanceCreator = field.getAnnotation(CreateWith.class).value();
  }
  return instanceCreator;
}

代码示例来源：origin: hpehl/piriti

@Override
public Class<? extends PropertyGetter<?, ?>> getGetter()
{
  Class<? extends PropertyGetter<?, ?>> getter = null;
  if (field.isAnnotationPresent(Getter.class))
  {
    getter = field.getAnnotation(Getter.class).value();
  }
  return getter;
}

代码示例来源：origin: hpehl/piriti

@Override
public Class<? extends Converter<?>> getConverter()
{
  Class<? extends Converter<?>> converter = null;
  if (field.isAnnotationPresent(Convert.class))
  {
    converter = field.getAnnotation(Convert.class).value();
  }
  return converter;
}

代码示例来源：origin: hpehl/piriti

@Override
public String getFormat()
{
  String format = null;
  if (field.isAnnotationPresent(Format.class))
  {
    format = field.getAnnotation(Format.class).value();
  }
  return format;
}

代码示例来源：origin: hpehl/piriti

@Override
public WhitespaceHandling getWhitespaceHandling()
{
  WhitespaceHandling whitespaceHandling = REMOVE;
  if (field.isAnnotationPresent(Whitespace.class))
  {
    whitespaceHandling = field.getAnnotation(Whitespace.class).value();
  }
  return whitespaceHandling;
}

代码示例来源：origin: hpehl/piriti

@Override
  public Class<? extends PropertySetter<?, ?>> getSetter()
  {
    Class<? extends PropertySetter<?, ?>> setter = null;
    if (field.isAnnotationPresent(Setter.class))
    {
      setter = field.getAnnotation(Setter.class).value();
    }
    return setter;
  }
}

代码示例来源：origin: hpehl/piriti

@Override
public String getPath()
{
  String path = null;
  if (field.isAnnotationPresent(Id.class))
  {
    path = field.getAnnotation(Id.class).value();
  }
  else if (field.isAnnotationPresent(IdRef.class))
  {
    path = field.getAnnotation(IdRef.class).value();
  }
  else if (field.isAnnotationPresent(Path.class))
  {
    path = field.getAnnotation(Path.class).value();
  }
  return path;
}

代码示例来源：origin: hpehl/piriti

@Override
public int getOrder()
{
  int order = TypeContext.nextOrder();
  if (field.isAnnotationPresent(Order.class))
  {
    order = field.getAnnotation(Order.class).value();
  }
  return order;
}

代码示例来源：origin: hpehl/piriti

private boolean includeField(JField field, Set<Class<? extends Annotation>> mustHaveAnnotations)
{
  if (mustHaveAnnotations.isEmpty())
  {
    return true;
  }
  for (Class<? extends Annotation> a : mustHaveAnnotations)
  {
    if (field.isAnnotationPresent(a))
    {
      return true;
    }
  }
  logger.debug("Skipping field %s in %s as it is not annotated with any of %s", field.getName(), field
      .getEnclosingType().getParameterizedQualifiedSourceName(), mustHaveAnnotations);
  return false;
}

代码示例来源：origin: cromwellian/angulargwt

public static List<Injection> getInjectedFields(JClassType dType) {
    List<Injection> injects = new ArrayList<Injection>();
    for (JField f : dType.getFields()) {
      if(f.isAnnotationPresent(NgInjected.class)) {
        JClassType pType = f.getType().isClassOrInterface();
        if (pType != null) {
          NgInject pInject = pType.getAnnotation(NgInject.class);
          
          if (pInject != null) {
            injects.add(Injection.create(pType, f.getName(),pInject.name()));
          }
        }
      }
    }
    return injects;
  }
}

代码示例来源：origin: net.wetheinter/gwt-user

/**
 * Scans the owner class to find all fields annotated with @UiField, and puts
 * them in {@link #uiFields} and {@link #uiFieldTypes}.
 *
 * @param ownerType the type of the owner class
 */
private void findUiFields(JClassType ownerType)
  throws UnableToCompleteException {
 JField[] fields = ownerType.getFields();
 for (JField field : fields) {
  if (field.isAnnotationPresent(UiField.class)) {
   JClassType ownerFieldType = field.getType().isClassOrInterface();
   if (ownerFieldType == null) {
    logger.die("Field type is not a class in field "
      + field.getName());
   }
   OwnerField ownerField = new OwnerField(field, logger, context);
   String ownerFieldName = field.getName();
   uiFields.put(ownerFieldName, ownerField);
   uiFieldTypes.put(ownerFieldType, ownerField);
  }
 }
 // Recurse to superclass
 JClassType superclass = ownerType.getSuperclass();
 if (superclass != null) {
  findUiFields(superclass);
 }
}

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

/**
 * Scans the owner class to find all fields annotated with @UiField, and puts
 * them in {@link #uiFields} and {@link #uiFieldTypes}.
 *
 * @param ownerType the type of the owner class
 */
private void findUiFields(JClassType ownerType)
  throws UnableToCompleteException {
 JField[] fields = ownerType.getFields();
 for (JField field : fields) {
  if (field.isAnnotationPresent(UiField.class)) {
   JClassType ownerFieldType = field.getType().isClassOrInterface();
   if (ownerFieldType == null) {
    logger.die("Field type is not a class in field "
      + field.getName());
   }
   OwnerField ownerField = new OwnerField(field, logger, context);
   String ownerFieldName = field.getName();
   uiFields.put(ownerFieldName, ownerField);
   uiFieldTypes.put(ownerFieldType, ownerField);
  }
 }
 // Recurse to superclass
 JClassType superclass = ownerType.getSuperclass();
 if (superclass != null) {
  findUiFields(superclass);
 }
}

代码示例来源：origin: hpehl/piriti

protected boolean skipField(JField field, Set<Class<? extends Annotation>> annotationsToSkip)
{
  if (field.isTransient() || field.isStatic())
  {
    logger.debug("Skipping %s field %s in %s", field.isTransient() ? "transient" : "static", field.getName(),
        field.getEnclosingType().getParameterizedQualifiedSourceName());
    return true;
  }
  for (Class<? extends Annotation> a : annotationsToSkip)
  {
    if (field.isAnnotationPresent(a))
    {
      logger.debug("Skipping field %s in %s as it is annotated with @%s", field.getName(), field
          .getEnclosingType().getParameterizedQualifiedSourceName(), a.getClass().getName());
      return true;
    }
  }
  return false;
}

代码示例来源：origin: org.jboss.errai/errai-widgets

if (currField.isAnnotationPresent(WidgetMapper.class) && widgetMapper.isAssignableFrom(currField.getType().isClassOrInterface())) {
 WidgetMapper mf = currField.getAnnotation(WidgetMapper.class);
 if (currField.isAnnotationPresent(EntityFields.class)) {
  EntityFields ef = currField.getAnnotation(EntityFields.class);
  for (String fieldName : ef.value()) {
else if (currField.isAnnotationPresent(EntityMapped.class)) {
 EntityMapped entityMappedA = currField.getAnnotation(EntityMapped.class);
  if (fld.isAnnotationPresent(MapField.class)) {
   MapField mapFieldA = fld.getAnnotation(MapField.class);
   toEntityField = "".equals(mapFieldA.value()) ? entityFieldName : mapFieldA.value();
else if (currField.isAnnotationPresent(AddAllTo.class)) {
 String copyToField = currField.getAnnotation(AddAllTo.class).value();
 String copyFromField = currField.getName();

代码示例来源：origin: net.wetheinter/gwt-user

private boolean isPropertyConstrained(PropertyDescriptor p, boolean useField) {
 // cascaded counts as constrained
 // we must know if the @Valid annotation is on a field or a getter
 JClassType jClass = beanHelper.getJClass();
 if (useField &&
   jClass.findField(p.getPropertyName()).isAnnotationPresent(Valid.class)) {
  return true;
 } else if (!useField &&
   jClass.findMethod(asGetter(p),NO_ARGS).isAnnotationPresent(Valid.class)) {
  return true;
 }
 // for non-cascaded properties
 for (ConstraintDescriptor<?> constraint : p.getConstraintDescriptors()) {
  org.hibernate.validator.metadata.ConstraintDescriptorImpl<?> constraintHibernate = 
    (org.hibernate.validator.metadata.ConstraintDescriptorImpl<?>) constraint;
  if (constraintHibernate.getElementType() ==
    (useField ? ElementType.FIELD : ElementType.METHOD)) {
   return true;
  }
 }
 return false;
}

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

private boolean isPropertyConstrained(PropertyDescriptor p, boolean useField) {
 // cascaded counts as constrained
 // we must know if the @Valid annotation is on a field or a getter
 JClassType jClass = beanHelper.getJClass();
 if (useField &&
   jClass.findField(p.getPropertyName()).isAnnotationPresent(Valid.class)) {
  return true;
 } else if (!useField &&
   jClass.findMethod(asGetter(p),NO_ARGS).isAnnotationPresent(Valid.class)) {
  return true;
 }
 // for non-cascaded properties
 for (ConstraintDescriptor<?> constraint : p.getConstraintDescriptors()) {
  org.hibernate.validator.metadata.ConstraintDescriptorImpl<?> constraintHibernate = 
    (org.hibernate.validator.metadata.ConstraintDescriptorImpl<?>) constraint;
  if (constraintHibernate.getElementType() ==
    (useField ? ElementType.FIELD : ElementType.METHOD)) {
   return true;
  }
 }
 return false;
}

代码示例来源：origin: ManfredTremmel/gwt-bean-validators

private boolean isPropertyConstrained(final PropertyDescriptor ppropertyDescription,
  final boolean useField) {
 // cascaded counts as constrained
 // we must know if the @Valid annotation is on a field or a getter
 final JClassType jClass = beanHelper.getJClass();
 if (useField && jClass.findField(ppropertyDescription.getPropertyName())
   .isAnnotationPresent(Valid.class)) {
  return true;
 } else if (!useField && jClass.findMethod(asGetter(ppropertyDescription), NO_ARGS)
   .isAnnotationPresent(Valid.class)) {
  return true;
 }
 // for non-cascaded properties
 for (final ConstraintDescriptor<?> constraint : ppropertyDescription
   .getConstraintDescriptors()) {
  final org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl<?> constraintHibernate =
    (org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl<?>) constraint;
  if (constraintHibernate
    .getElementType() == (useField ? ElementType.FIELD : ElementType.METHOD)) {
   return true;
  }
 }
 return false;
}