rand() hibernate
- 作者: 一天能吃两碗饭
- 来源: 51数据库
- 2020-10-08
public void randResultSet() {
HashSet set = new HashSet();
SessionFactory sf = HibernateSessionFactory.getSessionFactory();
Session s = sf.openSession();
List list = s.createQuery("from user").list();
int maxSize = list.size();
while (true) {
int randNumber = (int) (Math.random() * maxSize + 1) - 1;
set.add(randNumber);
if (set.size() >= 10) {
break;
}
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
for (int a : set) {
user u = (user) list.get(a);
System.out.println(u.getName());
}
}
问问我吗 我可以告诉你啊 你做了多长时间了 还没有做出来啊！！！！！！！！
HashSet
SessionFactory sf = HibernateSessionFactory.getSessionFactory();
Session s = sf.openSession();
List
int maxSize = list.size();
while (true) {
int randNumber = (int) (Math.random() * maxSize + 1) - 1;
set.add(randNumber);
if (set.size() >= 10) {
break;
}
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
for (int a : set) {
user u = (user) list.get(a);
System.out.println(u.getName());
}
}
问问我吗 我可以告诉你啊 你做了多长时间了 还没有做出来啊！！！！！！！！
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