标签：account 界面 javaweb 不同 req password type public String
目录结构
类包：
- AccountBean.java
- AccountDao.java
- JudgeServlet.java
登陆界面：
- index.jsp
代码实现
AccountBean.java
package login;
public class AccountBean {
String account;
String password;
String type;
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}
AccountDao.java
package login;
import dao.Con_CloseSql;
import java.sql.*;
public class AccountDao {
public AccountBean checkAccount(String user, String password) throws Exception {
Connection connect = new Con_CloseSql().getConnect();
Statement stat = connect.createStatement();
String sql = "select * from account where account = '" + user + "' and password = '" + password + "'";
ResultSet rs = stat.executeQuery(sql);
AccountBean accountBean = new AccountBean();
if (rs.next()){
accountBean.setAccount(rs.getString("account"));
accountBean.setPassword(rs.getString("password"));
accountBean.setType(rs.getString("type"));
}
Con_CloseSql.closeConnection(connect);
return accountBean;
}
}
JudgeServlet.java
package login;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class JudgeServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
resp.setContentType("text/html;utf-8");
String account = req.getParameter("account");
String password = req.getParameter("password");
String type = req.getParameter("type");
AccountDao dao = new AccountDao();
try {
AccountBean bean = dao.checkAccount(account, password);
String type1 = bean.getType();
if(type1.equals(type))
{
if(type.equals("学生"))
req.getRequestDispatcher("stuhome.jsp").forward(req,resp);
if(type.equals("教师"))
req.getRequestDispatcher("teahome.jsp").forward(req,resp);
if(type.equals("管理员"))
req.getRequestDispatcher("Adminhome.jsp").forward(req,resp);
}
} catch (Exception e) {
resp.getWriter().print("<script>alert(\"账号或用户名出错\"); </script>");
}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<form method="post" action="judge">
账号：<input type="text" name="account"><br>
密码：<input type="password" name="password"><br>
用户类型：
<select name="type">
<option value="学生" name="xuesheng">学生</option>
<option value="教师" name="jiaoshi">教师</option>
<option value="管理员" name="guanliyuan">管理员</option>
</select><br>
<input type="submit" value="登陆">
</form>
</body>
</html>
数据库表结构为
其中account与password是用户密码
type是该用户类型
如果全部匹配就可进入对应界面
标签：account,界面,javaweb,不同,req,password,type,public,String 来源： https://www.cnblogs.com/java-six/p/15610068.html
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