wolaizhaomengxiang的专栏

public int register(String email, String name, String password, String loc, double latitude, double longitude,String user_pic){ // 注册信息sql语句 // String sql1 = // "select user_id from user wher

String url = select  count（*） from  user where user_email = ?;PreparedStatement  pstm = new PreparedStatement (url);ResuleSet rs= pstm.excuteQuery();rs.next();int count = rs.getInt(1);if