为什么输入账号密码后无法实现跳转,拜托大神求解啊啊啊啊啊

Question

 package service;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import dao.SqlUtil;

import model.User;

public class LoginCheck {

    public User LoginCheck(User user) {
        Connection con = SqlUtil.getConnection();
        User resuser = new User();
        try {
            PreparedStatement ps = con
                    .prepareStatement("select * from student where loginname = '"
                            + user.getLoginname()
                            + "'and password = '"
                            + user.getPassword() + "'");

            ResultSet result = (ResultSet) ps.executeQuery();

            if (result.next()) {

                resuser.setUsername(result.getString("name"));
                resuser.setDeptid(result.getString("deptid"));
                resuser.setId(result.getString("id"));
                resuser.setLoginname(result.getString("loginname"));
                resuser.setPassword(result.getString("password"));
                resuser.setRoleid(result.getString("roleid"));
            } else {
            }

        } catch (SQLException e) {
            e.printStackTrace();
        }
        return resuser;
    }

}

为什么不管我输入什么，依然是停留在login.jsp，无法跳转到contens.jsp页面？来大神解惑，谢谢啦

Answer 1

前面加个“/”试试，最近也在写这个，/表示根目录，jsp文件放在webroot下