public static void copyPropertiesExceptNull(Object dest, Object orig)
throws IllegalAccessException, InvocationTargetException {
// Validate existence of the specified beans
if (dest == null) {
throw new IllegalArgumentException("No destination bean specified");
}
if (orig == null) {
throw new IllegalArgumentException("No origin bean specified");
}
if (log.isDebugEnabled()) {
log.debug("BeanUtils.copyProperties(" + dest + ", " + orig + ")");
}
// Copy the properties, converting as necessary
BeanUtilsBean bub = BeanUtilsBean.getInstance();
if (orig instanceof DynaBean) {
DynaProperty[] origDescriptors = ((DynaBean) orig).getDynaClass().getDynaProperties();
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
// Need to check isReadable() for WrapDynaBean
// (see Jira issue# BEANUTILS-61)
if (bub.getPropertyUtils().isReadable(orig, name)
&& bub.getPropertyUtils().isWriteable(dest, name)) {
Object value = ((DynaBean) orig).get(name);
bub.copyProperty(dest, name, value);
}
}
} else if (orig instanceof Map) {
Iterator entries = ((Map) orig).entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
String name = (String) entry.getKey();
if (bub.getPropertyUtils().isWriteable(dest, name)) {
bub.copyProperty(dest, name, entry.getValue());
}
}
} else /* if (orig is a standard JavaBean) */ {
PropertyDescriptor[] origDescriptors = bub.getPropertyUtils().getPropertyDescriptors(orig);
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
if ("class".equals(name) || "propName".equals(name) || "propValue".equals(name)) {
continue; // No point in trying to set an object's class
}
if (bub.getPropertyUtils().isReadable(orig, name)
&& bub.getPropertyUtils().isWriteable(dest, name)) {
try {
Object value = bub.getPropertyUtils().getSimpleProperty(orig, name);
if (value != null) {
bub.copyProperty(dest, name, value);
}
} catch (NoSuchMethodException e) {
// Should not happen
}
}
}
}
}
/**
* 拷贝属性给对象(类型宽松)
*
* @param bean
* @param name 属性名
* @param value 属性值
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public static void copyProperty(Object bean, String name, Object value) {
try {
Class propertyClazz = BEANUTILSBEAN.getPropertyUtils().getPropertyType(bean, name);
if (propertyClazz.isEnum() && value instanceof Integer) { // 属性枚举型 目标值是整型
value = EnumUtils.getEnum(propertyClazz, (Integer) value);
}
BEANUTILSBEAN.copyProperty(bean, name, value);
} catch (Throwable e) {
LOGGER.error("BeanUtil 对象属性赋值出错:", e);
throw new RuntimeException(e);
}
}
/** {@inheritDoc} 安静的拷贝属性，如果属性非法或其他错误则记录日志 */
public boolean populateValue(
final Object target, String entityName, final String attr, final Object value) {
try {
if (attr.indexOf('.') > -1)
initProperty(target, entityName, Strings.substringBeforeLast(attr, "."));
beanUtils.copyProperty(target, attr, value);
return true;
} catch (Exception e) {
logger.warn(
"copy property failure:[class:" + entityName + " attr:" + attr + " value:" + value + "]:",
e);
return false;
}
}
private void setValue(final String attr, final Object value, final Object target) {
try {
beanUtils.copyProperty(target, attr, value);
} catch (Exception e) {
logger.error(
"copy property failure:[class:"
+ target.getClass().getName()
+ " attr:"
+ attr
+ " value:"
+ value
+ "]:",
e);
}
}
/**
* Implements the Contextualizable interface using bean introspection.
*
* @param aContext {@inheritDoc}
* @throws CheckstyleException {@inheritDoc}
* @see Contextualizable
*/
public final void contextualize(Context aContext) throws CheckstyleException {
final BeanUtilsBean beanUtils = createBeanUtilsBean();
// TODO: debug log messages
final Collection<String> attributes = aContext.getAttributeNames();
for (final String key : attributes) {
final Object value = aContext.get(key);
try {
beanUtils.copyProperty(this, key, value);
} catch (final InvocationTargetException e) {
// TODO: log.debug("The bean " + this.getClass()
// + " is not interested in " + value)
throw new CheckstyleException(
"cannot set property "
+ key
+ " to value "
+ value
+ " in bean "
+ this.getClass().getName(),
e);
} catch (final IllegalAccessException e) {
throw new CheckstyleException(
"cannot access " + key + " in " + this.getClass().getName(), e);
} catch (final IllegalArgumentException e) {
throw new CheckstyleException(
"illegal value '"
+ value
+ "' for property '"
+ key
+ "' of bean "
+ this.getClass().getName(),
e);
} catch (final ConversionException e) {
throw new CheckstyleException(
"illegal value '"
+ value
+ "' for property '"
+ key
+ "' of bean "
+ this.getClass().getName(),
e);
}
}
}
/**
* 将map转Bean
*
* @param map
* @param clazz
* @return
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public static Object buildBean(Map map, Class clazz) {
if (map == null) {
return null;
}
Object bean = null;
try {
bean = clazz.newInstance();
PropertyDescriptor[] pds = BEANUTILSBEAN.getPropertyUtils().getPropertyDescriptors(clazz);
for (PropertyDescriptor pd : pds) {
String fieldName = pd.getName();
if (map.containsKey(fieldName)) {
Object mapValue = map.get(fieldName);
Class beanType = pd.getPropertyType();
Object beanValue = mapValue;
if (beanType.isEnum()) {
if (mapValue != null) {
if (mapValue instanceof String) {
if (String.valueOf(mapValue).matches("\\d+")) { // 数字型
mapValue = Integer.parseInt(String.valueOf(mapValue));
int intValue = (Integer) mapValue;
Method method = beanType.getMethod("values");
Object[] enumValues = (Object[]) method.invoke(beanType);
if (intValue >= 0 && intValue < enumValues.length) {
beanValue = enumValues[intValue];
} else {
continue;
}
} else { // 字符串标识的枚举值
try {
beanValue = Enum.valueOf(beanType, String.valueOf(mapValue));
} catch (IllegalArgumentException e) { // 是一个错误的值
continue;
}
}
} else if (mapValue instanceof Integer) { // 整型
int intValue = (Integer) mapValue;
Method method = beanType.getMethod("values");
Object[] enumValues = (Object[]) method.invoke(beanType);
if (intValue >= 0 && intValue < enumValues.length) {
beanValue = enumValues[intValue];
} else { // 超过了枚举的int值范围
continue;
}
}
}
} else if (beanType.equals(java.util.Date.class)) {
if (mapValue != null) {
if (mapValue instanceof String) {
try {
DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
beanValue = format.parse(String.valueOf(mapValue));
} catch (ParseException e) {
LOGGER.error("BeanHelper buildBean string 转 Date 出错!");
continue;
}
}
}
}
BEANUTILSBEAN.copyProperty(bean, fieldName, beanValue);
}
}
return bean;
} catch (Throwable e) {
LOGGER.error("BeanHelper 根据map创建bean出错:", e);
throw new RuntimeException(e);
}
}
@Override
public void copyProperty(Object dest, String name, Object value)
throws IllegalAccessException, InvocationTargetException {
if (value == null) return;
super.copyProperty(dest, name, value);
}
/**
* Implements the Configurable interface using bean introspection.
*
* <p>Subclasses are allowed to add behaviour. After the bean based setup has completed first the
* method {@link #finishLocalSetup finishLocalSetup} is called to allow completion of the bean's
* local setup, after that the method {@link #setupChild setupChild} is called for each {@link
* Configuration#getChildren child Configuration} of <code>aConfiguration</code>.
*
* @param aConfiguration {@inheritDoc}
* @throws CheckstyleException {@inheritDoc}
* @see Configurable
*/
public final void configure(Configuration aConfiguration) throws CheckstyleException {
mConfiguration = aConfiguration;
final BeanUtilsBean beanUtils = createBeanUtilsBean();
// TODO: debug log messages
final String[] attributes = aConfiguration.getAttributeNames();
for (final String key : attributes) {
final String value = aConfiguration.getAttribute(key);
try {
// BeanUtilsBean.copyProperties silently ignores missing setters
// for key, so we have to go through great lengths here to
// figure out if the bean property really exists.
final PropertyDescriptor pd = PropertyUtils.getPropertyDescriptor(this, key);
if ((pd == null) || (pd.getWriteMethod() == null)) {
throw new CheckstyleException(
"Property '"
+ key
+ "' in module "
+ aConfiguration.getName()
+ " does not exist, please check the documentation");
}
// finally we can set the bean property
beanUtils.copyProperty(this, key, value);
} catch (final InvocationTargetException e) {
throw new CheckstyleException(
"Cannot set property '"
+ key
+ "' in module "
+ aConfiguration.getName()
+ " to '"
+ value
+ "': "
+ e.getTargetException().getMessage(),
e);
} catch (final IllegalAccessException e) {
throw new CheckstyleException(
"cannot access " + key + " in " + this.getClass().getName(), e);
} catch (final NoSuchMethodException e) {
throw new CheckstyleException(
"cannot access " + key + " in " + this.getClass().getName(), e);
} catch (final IllegalArgumentException e) {
throw new CheckstyleException(
"illegal value '"
+ value
+ "' for property '"
+ key
+ "' of module "
+ aConfiguration.getName(),
e);
} catch (final ConversionException e) {
throw new CheckstyleException(
"illegal value '"
+ value
+ "' for property '"
+ key
+ "' of module "
+ aConfiguration.getName(),
e);
}
}
finishLocalSetup();
final Configuration[] childConfigs = aConfiguration.getChildren();
for (final Configuration childConfig : childConfigs) {
setupChild(childConfig);
}
}