public String getName(){
List<CoUser> kll = coUserMapper.getName();
Random random = new Random();
int n = random.nextInt(kll.size());
return kll.get(n).getName();
}
public String getName(){
List<CoUser> kll = coUserMapper.getName();
Random random = new Random();
int n = random.nextInt(kll.size());
return kll.get(n).getName();
}