import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.Timestamp;
import java.util.Date;
import java.util.Map;
public class Transformation {
private static void setMethodValue(Object obj, Method method, Object objects) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
if (Timestamp.class.getName().equals(method.getParameterTypes()[0].getName())) {
if (null != objects && !"null".equals(objects)) {
method.invoke(obj, new Timestamp((long) objects));
}
} else if (Date.class.getName().equals(method.getParameterTypes()[0].getName())) {
if (null != objects && !"null".equals(objects)) {
method.invoke(obj, new Timestamp((long) objects));
}
} else if (java.sql.Date.class.getName().equals(method.getParameterTypes()[0].getName())) {
if (null != objects && !"null".equals(objects)) {
method.invoke(obj, new Timestamp((long) objects));
}
} else {
method.invoke(obj, objects);
}
}
@SuppressWarnings("rawtypes")
public static T convertMap(Class type, Map map) throws IntrospectionException, IllegalAccessException, InstantiationException, InvocationTargetException {
BeanInfo beanInfo = Introspector.getBeanInfo(type); // 擷取類屬性
T instance = type.newInstance(); // 建立 JavaBean 對象
// 給 JavaBean 對象的屬性指派
PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
for (int i = 0; i < propertyDescriptors.length; i++) {
PropertyDescriptor descriptor = propertyDescriptors[i];
String propertyName = descriptor.getName();
if (map.containsKey(propertyName)) {
// 下面的 try起來，這樣當一個屬性指派失敗的時候就不會影響其他屬性指派。
Object value = map.get(propertyName);
Object[] args = new Object[1];
args[0] = value;
setMethodValue(instance, descriptor.getWriteMethod(), value);
}
}
return instance;
}
}