JavaWeb检测注册内容是否在数据库中有相同的内容1.原理2.具体代码实现3.参考
1.原理prep1 = conn.prepareStatement("select * from youkexinxi where youkexingming=?");prep1.setString(1,e.getyoukexingming());ResultSet rs = prep1.executeQuery();rs.next()函数传入需要注册的姓名，使用rs.next()函数...
