package com.cloud.common.utils;

/**
 * 字符串的一些工具方法
 * @author bsk
 *
 */
public class StringUtil {

	/**
	 * 如果str为null， 则返回空串, 否则返回原来的字符串
	 */
	public static String nullToEmpty(String str) {
		if (str == null) {
			return "";
		}
		return str;
	}


/*	public <T> T  preInsert(Object obj,Class<T> t) throws IllegalAccessException, InstantiationException {
		T sys = t.newInstance();
		Class<?> cls = obj.getClass();
		Field[] fields = cls.getDeclaredFields();
		Field[] beanFields = cla.getDeclaredFields();

		for(Field field:fields) {
			String fieldName = field.getName();
			String strSet = "set" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1, fieldName.length());
			Method methodSet = cls.getDeclaredMethod(strSet);
			Object object = methodSet.invoke(obj);
		}

			return sys;
		*//*LoginAppUser device =AppUserUtil.getLoginAppUser();
		if (StringUtils.isNotEmpty(device.getId().toString())){
			try{
				sys.setUpdateBy(device.getUsername());
				sys.setCreateBy(device.getUsername());
			}catch(Exception e){

			}
		}
		sys.setCreateTime(new Date());
		sys.setUpdateTime(sys.getCreateTime());*//*
	}*/
	
}