JFinal Web开发学习(七)使用layUI美化的登录功能

来源：互联网发布：银行大数据客户分层编辑：程序博客网时间：2024/05/16 14:25

效果：
这里写图片描述

验证码还是没有布局好.背景比较怀古.
代码：
https://code.csdn.net/u012995856/jfinaltest/tree/master
1.写前端html
login.html

<!DOCTYPE html><html><head><meta charset="UTF-8"><meta name="viewport"    content="width=device-width, initial-scale=1, maximum-scale=1"><title>登录</title><link rel="stylesheet" href="/static/css/layui.css"><link rel="stylesheet" href="/static/css/login.css"></head><body>    <div class="clear box layui-main login">        <form class="layui-form layui-form-pane1" action="ulogin" method="post">            <div class="layui-form-item">                <label class="layui-form-label">用户名：</label>                <div class="layui-input-block">                    <input type="text" name="user.name" lay-verify="uname" required                        placeholder="请输入用户名" autocomplete="off" class="layui-input">${UnameErrMsg?if_exists}                </div>            </div>            <div class="layui-form-item">                <label class="layui-form-label">密码：</label>                <div class="layui-input-block">                    <input type="password" name="user.pwd" lay-verify="" required                        placeholder="请输入密码" autocomplete="off" class="layui-input">${PwdErrMsg?if_exists}                </div>            </div>            <div class="layui-form-item">                <label class="layui-form-label">验证码：</label>                <div class="layui-input-block">                    <input type="text" name="yzm" lay-verify="" required                        placeholder="请输入验证码" autocomplete="off" class="layui-input">${yzmErrMsg?if_exists}<br>                <a href="/login.html"><img alt="验证码" src="/yzm"></a>                </div>            </div>            <div class="layui-form-item">            <label class="layui-form-label"></label>                <button class="layui-btn layui-btn-normal btn-center" type="submit">登录</button>            </div>        </form>    </div>    <script src="/static/js/layui.js"></script></body></html>

登录界面样式

@CHARSET "UTF-8";body{    background-image:url(/static/images/login-bg.png);}.login {    padding-top: 15%;    width: 26%;}.btn-center{    text-center:center;    margin:0 auto;}

2.写控制器
其中就是login方法与ulogin方法
controller包下IndexController类

package cn.pangpython.controller;import com.jfinal.aop.Before;import com.jfinal.core.Controller;import com.jfinal.ext.kit.SessionIdKit;import cn.pangpython.model.User;import cn.pangpython.utils.DateUtils;import cn.pangpython.utils.MD5;import cn.pangpython.validate.RegistValidator;import cn.pangpython.validate.UserLoginValidator;/** * @author pangPython * 主页控制器 */public class IndexController extends Controller {    public void index(){        renderText("index");    }    //渲染注册页面    public void regpage(){        render("regist.html");    }    //处理注册    @Before(RegistValidator.class)    public void regist(){        String pwd = getPara("user.pwd");        String confirm = getPara("reg.confirm");        //验证码验证        boolean result = validateCaptcha("reg.yzm");        if(!result){            setAttr("yzmErrMsg", "验证码错误！");            render("regist.html");            return;        }        //确认密码验证        if(!pwd.equals(confirm)){            setAttr("confirmErrMsg", "请正确填写确认密码！");            render("regist.html");            return;        }        String uname = getPara("user.name");        User user = getModel(User.class);        String reg_time = DateUtils.dateToUnixTimestamp(DateUtils.getNowTime())+"";        //使用用户注册日期作为md5密码加密的盐值,可节省一个salt数据库字段        pwd = MD5.GetMD5Code(pwd+reg_time);        //给user实体类填充数据        user.setName(uname);        user.setPwd(pwd);        user.setRegTime(reg_time);        //使用jfinal的保存操作        user.save();        renderText("注册成功！");    }    public void login(){        render("login.html");    }    @Before(UserLoginValidator.class)    public void ulogin(){        // 验证码结果        boolean result = validateCaptcha("yzm");        if (!result) {            setAttr("yzmErrMsg", "验证码错误！");            render("login.html");            return;        }        String uname = getPara("user.name");        String sql = "select * from user where name = ? limit 1";        User user = User.dao.findFirst(sql, uname);        if (user != null) {            String pwd = MD5.GetMD5Code(getPara("user.pwd") + user.getRegTime());            if (user.getPwd().equals(pwd)) {                // 生成唯一标识                String sessionId = SessionIdKit.me().generate(getRequest());                // 设置服务器端session                setSessionAttr(sessionId, user);                // 设置用户端cookie                setCookie("cuser", sessionId, 60000);                //redirect("/user");                renderText("登录成功！");            } else {                // 密码不正确                setAttr("UnameErrMsg", "用户名或密码不正确！");                render("login.html");            }        } else {            // 用户名不存在            setAttr("UnameErrMsg", "用户名不存在！");            render("login.html");        }    }}

3.写登录验证器
validator包下的UserLoginValidator继承JFinal的Validator

package cn.pangpython.validate;import com.jfinal.core.Controller;import com.jfinal.validate.Validator;public class UserLoginValidator extends Validator {    @Override    protected void handleError(Controller controller) {        controller.keepPara();    }    @Override    protected void validate(Controller arg0) {        validateRequired("user.name", "UnameErrMsg", "请输入用户名！");        validateRequired("user.pwd", "PwdErrMsg", "请输入密码！");        validateRequired("yzm", "yzmErrMsg", "请输入验证码！");    }}

注：验证码的校验也可以在验证器中进行验证
到此就完成了登录功能.运行config文件，访问

http://localhost/login

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