import org.apache.commons.beanutils.BeanUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
/**
 * java bean 、 map相互转换
 * @author
 */
public class MapBeanUtil {

    private static Logger logger = LoggerFactory.getLogger(MapBeanUtil.class);

    /**
     * Map --> Bean
     * @param map
     * @param obj
     */
    public static void transMap2Bean2(Map<String, Object> map, Object obj) {
        if (map == null || obj == null) {
            return;
        }
        try {
            BeanUtils.populate(obj, map);
        } catch (Exception e) {
            logger.error("transMap2Bean2 Error ", e);
        }
    }


    /**
     * Map --> Bean
     * @param map
     * @param obj
     */
    public static void transMap2Bean(Map<String, Object> map, Object obj) {
 
        try {
            BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());
            PropertyDescriptor[] propertyDescriptors = beanInfo
                    .getPropertyDescriptors();
 
            for (PropertyDescriptor property : propertyDescriptors) {
                String key = property.getName();
 
                if (map.containsKey(key)) {
                    Object value = map.get(key);
                    // 得到property对应的setter方法
                    Method setter = property.getWriteMethod();
                    setter.invoke(obj, value);
                }
 
            }
        } catch (Exception e) {
            logger.error("transMap2Bean Error ", e);
        }
        return;
 
    }

    /**
     * Bean --> Map
     * @param obj
     * @return
     */
    public static Map<String, Object> transBean2Map(Object obj) {
        if (obj == null) {
            return null;
        }
        Map<String, Object> map = new HashMap<String, Object>();
        try {
            BeanInfo beanInfo = Introspector.getBeanInfo(obj.getClass());
            PropertyDescriptor[] propertyDescriptors = beanInfo
                    .getPropertyDescriptors();
            for (PropertyDescriptor property : propertyDescriptors) {
                String key = property.getName();
 
                // 过滤class属性
                if (!key.equals("class")) {
                    // 得到property对应的getter方法
                    Method getter = property.getReadMethod();
                    Object value = getter.invoke(obj);
 
                    map.put(key, value);
                }
 
            }
        } catch (Exception e) {
            logger.error("transBean2Map Error ", e);
        }
        return map;
    }
}