Map

Map转Java Bean

1. Bean的属性必须和Map的键一致 org.apache.commons.beanutils.BeanUtils.populate(bean, map);

2. 利用反射

public class MapToBeanUtil {

    public static Object convertMap(Class type, Map map)
            throws IntrospectionException, IllegalAccessException,
            InstantiationException, InvocationTargetException {
        BeanInfo beanInfo = Introspector.getBeanInfo(type); // 获取类属性
        Object obj = type.newInstance(); // 创建 JavaBean 对象

        // 给 JavaBean 对象的属性赋值
        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
        for(PropertyDescriptor descriptor: propertyDescriptors){
            String propertyName = descriptor.getName();
            if (map.containsKey(propertyName)) {
                Object value = map.get(propertyName);
                Object[] args = new Object[1];
                args[0] = value;

                descriptor.getWriteMethod().invoke(obj, args);
            }
        }
        return obj;
    }
}