オブジェクトを比較します.このオブジェクトのプロパティが空でない場合は、このプロパティを持つ別のbeanにコピーします.
2100 ワード
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.PropertyUtils;
public class CopyBean {
/**
* , , copy bean
*
* @param result copy bean
* @param orig BEAN
* @throws InvocationTargetException
* @throws IllegalAccessException
*/
public static void copyOrigNotNullPropertyToDestBean(Object result, Object orig) throws IllegalAccessException,
InvocationTargetException {
// Validate existence of the specified beans
if (result == null) {
throw new IllegalArgumentException("No destination bean specified");
}
if (orig == null) {
throw new IllegalArgumentException("No origin bean specified");
}
if (orig instanceof Map) {
throw new IllegalArgumentException("No support map");
}
/* if (orig is a standard JavaBean) */
PropertyDescriptor origDescriptors[] = PropertyUtils.getPropertyDescriptors(orig);
for (int i = 0; i < origDescriptors.length; i++) {
String name = origDescriptors[i].getName();
if ("class".equals(name)) {
continue; // No point in trying to set an object's class
}
if (PropertyUtils.isReadable(orig, name) && PropertyUtils.isWriteable(result, name)) {
try {
Object value1 = PropertyUtils.getSimpleProperty(orig, name);
if (value1 != null) {
if (PropertyUtils.isReadable(result, name) && PropertyUtils.isWriteable(result, name)) {
BeanUtils.copyProperty(result, name, value1);
}
}
} catch (NoSuchMethodException e) {
}
}
}
}
}