baseutil.java

网上购物系统

package eshopsys.tools.util;

import java.sql.Date;

public class BaseUtil{
  //过滤日期
  public static Date avoidNullDate(Date str) {
    if (str == null) {
      return Date.valueOf("1980-1-1");
    }
    else {
      return str;
    }
  }
  
  //判断字符是否为空
  public static boolean isNull(String s) {
		if ((s == null) || (s.trim().length() == 0) || (s.equals("null"))) {
			return true;
		} 
		else {
			return false;
		}
  }

  //过滤字符串空值
  public String avoidNullString(String s) {
		if ((s == null) || (s.trim().length() == 0) || (s.equals("null"))) {
			return "";
		} 
		else {
			return s;
		}
  }
}