map与对象相互转换

/**
 * 将对象装换为map
 * @param bean
 * @return
 */
public static <T> Map<String, Object> beanToMap(T bean) {
   Map<String, Object> map = new HashMap();
   if (bean != null) {
      BeanMap beanMap = BeanMap.create(bean);
      for (Object key : beanMap.keySet()) {
         Object obj =beanMap.get(key);
         if (!org.springframework.util.StringUtils.isEmpty(obj)) {
            if(obj instanceof Date || obj instanceof Calendar){
               map.put(key + "",formtDate(obj,"yyyy-MM-dd HH:mm:ss"));
            }else{
               map.put(key + "", beanMap.get(key));
            }
         }
      }
   }
   return map;
}

/**
 *
 * @param date
 * @param pattern
 * @return
 */
public static String formtDate(Object date, String pattern) {
   if(date == null){
      return "";
   }
   if(date instanceof Calendar){
      date = ((Calendar) date).getTime();
   }
   if(pattern == null || pattern.trim().equals("")){
      pattern = "yyyy-MM-dd HH:mm:ss";
   }
   return new SimpleDateFormat(pattern).format(date);
}
/**
 * 将map装换为javabean对象
 *
 * @param map
 * @param bean
 * @return
 */
public static <T> T mapToBean(Map<String, Object> map, T bean) {
   BeanMap beanMap = BeanMap.create(bean);
   beanMap.putAll(map);
   return bean;
}

调用：其中DataUtils为以上方法的工具类

public void saveNames(Map<String,Object> map)
{
   Student record = new Strdent();
   DataUtils.mapToBean(map,record);//此时map中Student类型对象可用属性已赋值给record;
}

public void saveNames(Student record) {
   Map<String,Object> param = DataUtils.beanToMap(record);
}