check.jsp
来自「仿校内网站」· JSP 代码 · 共 18 行
JSP
18 行
<%@page contentType="texthtml;charset=utf-8" errorPage=""%> <%request.setCharacterEncoding("GBK");%> <%@page import="ArticleSharing.DBTools"%> <%@page import="java.sql.*"%> <% String user_name = request.getParameter("user_name"); DBTools tool = new DBTools(); String sql = "select * from users where user_name='" + user_name + "'"; ResultSet rs = null; rs = tool.excuteQuery(sql); if (rs != null) if (rs.next()) out.println("用户名已经被注册,请更换一个用户名。"); else out.println("用户名尚未被使用,您可以继续。");%>
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