根据日期得到星座

/**
* 根据日期的到星座
*/
public class ConsUtil {
/**
* 根据时间得到相应的星座
* @param date 时间类型 格式 2016-05-26
* @return 返回相应的星座
*/
public static String getCons(String date){
String cons[] = {"白羊座","金牛座","双子座","巨蟹座","狮子座","处女座","天秤座","天蝎座","射手座","摩羯座","水瓶座","双鱼座"};
int edgeDate[] = {21,20,21,22,23,23,23,24,23,22,20,19};//星座起始日期 3月份开始

String dates[] = date.split("-");
if(dates.length<3) return null;//格式不正确
int month = Integer.parseInt(dates[1]);
int day = Integer.parseInt(dates[2]);

int index = (month+9)%12;
index = edgeDate[index]>day?(month+8)%12:index;//得到星座

return cons[index];
}
}