与mysql，判断能否登录帐号密码
时间：2021-07-01 10:21:17
帮助过：19人阅读
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘check.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
request.setCharacterEncoding("utf-8");
String users=request.getParameter("username");
String pass=request.getParameter("pwd");
boolean flag=false;
PreparedStatement sql=null;
ResultSet rs=null;
Connection conn=null;
%>
<%
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://127.0.0.1:3307/login";
String use = "root";
String password = "960404";
Class.forName(driver);
conn= DriverManager.getConnection(url,use,password);
sql =conn.prepareStatement("select * from student where username=? and password=?");
sql.setString(1,users);
sql.setString(2,pass);
rs=sql.executeQuery();
if (rs.next()) {
flag=true;
}
rs.close();
sql.close();
conn.close();
%>
<!-- 判断是否是正确的登录用户 -->
<% if (flag==true){ %>
<jsp:forward page="show.jsp"/>
<%}
else
if (flag==false){
%>
<jsp:forward page="login_fali.jsp"/>
<%} %>
</body>
</html>
与mysql，判断能否登录帐号密码
标签：driver param manage har character tle check password sql
