秒杀项目登录

一、技术点介绍

前端：Freemarker、LayUI、jQuery
后端：SpringBoot、MyBatisPlus、Lombok
中间件：RabbitMQ、Redis(redisson)
分布式协调框架：zookeeper

二、准备工作

①新建一个空的项目

②导入依赖



    4.0.0
    com.hmf
    seckill
    0.0.1-SNAPSHOT
    seckill
    seckill

    
        1.8
        UTF-8
        UTF-8
        2.4.1
    

    
        
            org.springframework.boot
            spring-boot-starter
        
        
            org.springframework.boot
            spring-boot-starter-aop
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
            org.springframework.boot
            spring-boot-starter-freemarker
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.1
        
        
        
            com.baomidou
            mybatis-plus-generator
            3.5.2
        
        
        
            commons-codec
            commons-codec
        
        
            org.apache.commons
            commons-lang3
            3.12.0
        
        
        
            org.springframework.boot
            spring-boot-starter-validation
        
        
        
            org.springframework.boot
            spring-boot-starter-data-redis
        
        
        
            com.zaxxer
            HikariCP
        
    

    
        
            
                org.springframework.boot
                spring-boot-dependencies
                ${spring-boot.version}
                pom
                import
            
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.4.1
                
                    com.hmf.seckill.SeckillApplication
                
                
                    
                        repackage
                        
                            repackage

③导入我们需要的表

④application.yml

spring:
  application:
    name: seckill
  datasource:
    url: jdbc:mysql://localhost:3306/user?useSSL=false&useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Asia/Shanghai&characterEncoding=UTF8
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
    hikari:
      # 最小空闲连接数量
      minimum-idle: 5
      # 空闲连接存活最大时间，默认600000（10分钟）
      idle-timeout: 180000
      # 连接池最大连接数，默认是10
      maximum-pool-size: 10
      # 此属性控制从池返回的连接的默认自动提交行为,默认值：true
      auto-commit: true
      # 连接池名称
      pool-name: MyHikariCP
      # 此属性控制池中连接的最长生命周期，值0表示无限生命周期，默认1800000即30分钟
      max-lifetime: 1800000
      # 数据库连接超时时间,默认30秒，即30000
      connection-timeout: 30000
  freemarker:
    #设置编码格式
    charset: UTF-8
    #后缀
    suffix: .ftl
    #文档类型
    content-type: text/html
    #模板前端
    template-loader-path: classpath:/templates/
    #启用模板
    enabled: true
    #开启静态资源
  mvc:
    static-path-pattern: /static, builder) ->
                                builder.author(scanner.apply("请输入作者名称？"))
                                        .enableSwagger()
                                        .fileOverride()
                                        .outputDir(System.getProperty("user.dir") + "\src\main\java")
                                        .commentDate("yyyy-MM-dd")
                                        .dateType(DateType.TIME_PACK)
                )
                .packageConfig((builder) ->
                        builder.parent("com.hmf.seckill")
                                .entity("pojo")
                                .service("service")
                                .serviceImpl("service.impl")
                                .mapper("mapper")
                                .xml("mapper.xml")
                                .pathInfo(Collections.singletonMap(OutputFile.xml, System.getProperty("user.dir") + "\src\main\resources\mapper"))
                )
                .injectionConfig((builder) ->
                        builder.beforeOutputFile(
                                (a, b) -> log.warn("tableInfo: " + a.getEntityName())
                        )
                )
                .strategyConfig((scanner, builder) ->
                        builder.addInclude(getTables(scanner.apply("请输入表名，多个英文逗号分隔？所有输入 all")))
                                .addTablePrefix("tb_", "t_")
                                .entityBuilder()
                                .enableChainModel()
                                .enableLombok()
                                .enableTableFieldAnnotation()
                                .addTableFills(
                                        new Column("create_time", FieldFill.INSERT)
                                )
                                .controllerBuilder()
                                .enableRestStyle()
                                .enableHyphenStyle()
                                .build())
                .templateEngine(new FreemarkerTemplateEngine())
                .execute();
    }

    protected static List getTables(String tables) {
        return "all".equals(tables) ? Collections.emptyList() : Arrays.asList(tables.split(","));
    }

}

生成代码

我们生成完之后少了个东西

layui官网

现在我们一系列工作准备好就可以上代码啦

进来了

三、前端构建

1、templates增加相关界面




    <#include "common/head.ftl"/>
    
        .layui-panel {
            position: absolute;
            width: 400px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            padding: 15px 15px 0px 15px;
            border-radius: 20px;
        }

        .layui-form-label {
            padding: 9px 0px;
        }

        h3 {
            text-align: center;
            line-height: 45px;
            font-size: 40px;
            color: white;
            padding-bottom: 15px;
        }
    



    
        用户登录
        
            用户账号
            
                
            
        
        
            用户密码

common目录 head.ftl


秒杀项目






<#assign ctx>
    ${springMacroRequestContext.getContextPath()}

goods目录，goodsList.ftl




    <#include "../common/head.ftl">


这是商品展示界面

导入layui

resources->static->asset->js下新建project目录

①、新建Javascript文件命名为login

layui.use(["jquery","layer"],()=>{
    //得到layuo中封装的jQuery
    let $=layui.jquery
    let layer=layui.layer
    //给登录按钮设置事件
    $(login).click(()=>{
        console.log("login....")
        //取表单的值
        let mobile=$("#mobile").val()
        let password=$("#password").val()
        //前端加密的盐
        let salt = "f1g2h3j4";
        if(password){
            //将密码和盐混一起
            password=salt.charAt(1) + "" + salt.charAt(5) + password + salt.charAt(0) + "" + salt.charAt(3);
            //进行md5加密
            password=md5(password)
        }
        console.log(password)
        //将数据给后台（前端分离axios  普通开发ajax）
        $.ajax({
            url: "/user/login",//后台登录接口
            data:{ //需要携带的数据
                mobile,
                password
            },
            dataType:"json",//后台给你的数据类型
            success(e){//成功的回调函数
                layer.msg(e.message,{icon:6})
            },
            error(e){//报错的回调函数

            },
        })
    })
  }
)

新建PathController类（controller软件包下）

（1）专门用于跳转路径：PathController类

package com.hmf.seckill.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class PathController {

    //跳首页
    @RequestMapping("/")
    public String toPath(){
        return "login";
    }

    //跳二级页面
    @RequestMapping("/{dir}/{path}")
    public String toPath(@PathVariable("dir") String dir,@PathVariable("path") String path){
        //处理操作
        return dir+"/"+path;
    }
}

这不好提供全部的源码因为太多了

所以我只提供一些重要的

四、MD5加密

1、导入帮助包与exception包

2、前后端传值

新建vo软件包，在建uservo类

package com.hmf.seckill.vo;

import com.hmf.seckill.util.response.ResponseResultCode;
import com.hmf.seckill.util.validate.IsMobile;
import com.hmf.seckill.util.validate.IsRequired;
import lombok.Data;
import org.aspectj.apache.bcel.classfile.Code;

import javax.validation.constraints.NotEmpty;

@Data
public class UserVo {

    private String mobile;
    private String password;

}

3、登录方法：

（1）Service层：

①、IUserService接口

package com.hmf.seckill.service;

import com.hmf.seckill.pojo.User;
import com.baomidou.mybatisplus.extension.service.IService;
import com.hmf.seckill.util.response.ResponseResult;
import com.hmf.seckill.vo.UserVo;


public interface IUserService extends IService {

    ResponseResult findByAccount(UserVo userVo);
}

②、实现接口UserServiceImpl

package com.hmf.seckill.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.hmf.seckill.exception.BusinessException;
import com.hmf.seckill.pojo.User;
import com.hmf.seckill.mapper.UserMapper;
import com.hmf.seckill.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmf.seckill.util.MD5Utils;
import com.hmf.seckill.util.ValidatorUtils;
import com.hmf.seckill.util.response.ResponseResult;
import com.hmf.seckill.util.response.ResponseResultCode;
import com.hmf.seckill.vo.UserVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;

import javax.swing.text.BadLocationException;


@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {

    @Override
    public ResponseResult findByAccount(UserVo userVo) {
        //先判断信息是否符合
        if(!ValidatorUtils.isMobile(userVo.getMobile())){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_MOBLIE);
        }
        if(StringUtils.isBlank(userVo.getPassword())){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_MOBLIE);
        }
        //再看数据库查出对应的用户
        User user=this.getOne(new QueryWrapper().eq("id",userVo.getMobile()));
        if(user==null){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_FIND);
        }
        //在比较密码
        //二重加密
        String salt=user.getSalt();
        String newPassword=MD5Utils.formPassToDbPass(userVo.getPassword(),salt);
        //将前台的加密和后端的盐再次加密
        if(newPassword.equals(user.getPassword())){
            throw new BusinessException(ResponseResultCode.USER_PASSWORD_NOT_MATCH);
        }
        return ResponseResult.success();
    }

}

Controller层

①、UserController

package com.hmf.seckill.controller;

import com.hmf.seckill.service.IUserService;
import com.hmf.seckill.util.response.ResponseResult;
import com.hmf.seckill.vo.UserVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;


@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping("/login")
    public ResponseResult login(@Valid UserVo userVo){
        //调用service的登录验证
        System.out.println("aaaaaa");
        return userService.findByAccount(userVo);
    }
}

密码加密 login.ftl




    <#include "common/head.ftl"/>
    
        .layui-panel {
            position: absolute;
            width: 400px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            padding: 15px 15px 0px 15px;
            border-radius: 20px;
        }

        .layui-form-label {
            padding: 9px 0px;
        }

        h3 {
            text-align: center;
            line-height: 45px;
            font-size: 40px;
            color: white;
            padding-bottom: 15px;
        }
    



    
        用户登录
        
            用户账号
            
                
            
        
        
            用户密码

md5.js




(function ($) {
    'use strict'

    
    function safeAdd (x, y) {
        var lsw = (x & 0xffff) + (y & 0xffff)
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
        return (msw << 16) | (lsw & 0xffff)
    }

    
    function bitRotateLeft (num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt))
    }

    
    function md5cmn (q, a, b, x, s, t) {
        return safeAdd(bitRotateLeft(safeAdd(safeAdd(a, q), safeAdd(x, t)), s), b)
    }
    function md5ff (a, b, c, d, x, s, t) {
        return md5cmn((b & c) | (~b & d), a, b, x, s, t)
    }
    function md5gg (a, b, c, d, x, s, t) {
        return md5cmn((b & d) | (c & ~d), a, b, x, s, t)
    }
    function md5hh (a, b, c, d, x, s, t) {
        return md5cmn(b ^ c ^ d, a, b, x, s, t)
    }
    function md5ii (a, b, c, d, x, s, t) {
        return md5cmn(c ^ (b | ~d), a, b, x, s, t)
    }

    
    function binlMD5 (x, len) {
        
        x[len >> 5] |= 0x80 << (len % 32)
        x[((len + 64) >>> 9 << 4) + 14] = len

        var i
        var olda
        var oldb
        var oldc
        var oldd
        var a = 1732584193
        var b = -271733879
        var c = -1732584194
        var d = 271733878

        for (i = 0; i < x.length; i += 16) {
            olda = a
            oldb = b
            oldc = c
            oldd = d

            a = md5ff(a, b, c, d, x[i], 7, -680876936)
            d = md5ff(d, a, b, c, x[i + 1], 12, -389564586)
            c = md5ff(c, d, a, b, x[i + 2], 17, 606105819)
            b = md5ff(b, c, d, a, x[i + 3], 22, -1044525330)
            a = md5ff(a, b, c, d, x[i + 4], 7, -176418897)
            d = md5ff(d, a, b, c, x[i + 5], 12, 1200080426)
            c = md5ff(c, d, a, b, x[i + 6], 17, -1473231341)
            b = md5ff(b, c, d, a, x[i + 7], 22, -45705983)
            a = md5ff(a, b, c, d, x[i + 8], 7, 1770035416)
            d = md5ff(d, a, b, c, x[i + 9], 12, -1958414417)
            c = md5ff(c, d, a, b, x[i + 10], 17, -42063)
            b = md5ff(b, c, d, a, x[i + 11], 22, -1990404162)
            a = md5ff(a, b, c, d, x[i + 12], 7, 1804603682)
            d = md5ff(d, a, b, c, x[i + 13], 12, -40341101)
            c = md5ff(c, d, a, b, x[i + 14], 17, -1502002290)
            b = md5ff(b, c, d, a, x[i + 15], 22, 1236535329)

            a = md5gg(a, b, c, d, x[i + 1], 5, -165796510)
            d = md5gg(d, a, b, c, x[i + 6], 9, -1069501632)
            c = md5gg(c, d, a, b, x[i + 11], 14, 643717713)
            b = md5gg(b, c, d, a, x[i], 20, -373897302)
            a = md5gg(a, b, c, d, x[i + 5], 5, -701558691)
            d = md5gg(d, a, b, c, x[i + 10], 9, 38016083)
            c = md5gg(c, d, a, b, x[i + 15], 14, -660478335)
            b = md5gg(b, c, d, a, x[i + 4], 20, -405537848)
            a = md5gg(a, b, c, d, x[i + 9], 5, 568446438)
            d = md5gg(d, a, b, c, x[i + 14], 9, -1019803690)
            c = md5gg(c, d, a, b, x[i + 3], 14, -187363961)
            b = md5gg(b, c, d, a, x[i + 8], 20, 1163531501)
            a = md5gg(a, b, c, d, x[i + 13], 5, -1444681467)
            d = md5gg(d, a, b, c, x[i + 2], 9, -51403784)
            c = md5gg(c, d, a, b, x[i + 7], 14, 1735328473)
            b = md5gg(b, c, d, a, x[i + 12], 20, -1926607734)

            a = md5hh(a, b, c, d, x[i + 5], 4, -378558)
            d = md5hh(d, a, b, c, x[i + 8], 11, -2022574463)
            c = md5hh(c, d, a, b, x[i + 11], 16, 1839030562)
            b = md5hh(b, c, d, a, x[i + 14], 23, -35309556)
            a = md5hh(a, b, c, d, x[i + 1], 4, -1530992060)
            d = md5hh(d, a, b, c, x[i + 4], 11, 1272893353)
            c = md5hh(c, d, a, b, x[i + 7], 16, -155497632)
            b = md5hh(b, c, d, a, x[i + 10], 23, -1094730640)
            a = md5hh(a, b, c, d, x[i + 13], 4, 681279174)
            d = md5hh(d, a, b, c, x[i], 11, -358537222)
            c = md5hh(c, d, a, b, x[i + 3], 16, -722521979)
            b = md5hh(b, c, d, a, x[i + 6], 23, 76029189)
            a = md5hh(a, b, c, d, x[i + 9], 4, -640364487)
            d = md5hh(d, a, b, c, x[i + 12], 11, -421815835)
            c = md5hh(c, d, a, b, x[i + 15], 16, 530742520)
            b = md5hh(b, c, d, a, x[i + 2], 23, -995338651)

            a = md5ii(a, b, c, d, x[i], 6, -198630844)
            d = md5ii(d, a, b, c, x[i + 7], 10, 1126891415)
            c = md5ii(c, d, a, b, x[i + 14], 15, -1416354905)
            b = md5ii(b, c, d, a, x[i + 5], 21, -57434055)
            a = md5ii(a, b, c, d, x[i + 12], 6, 1700485571)
            d = md5ii(d, a, b, c, x[i + 3], 10, -1894986606)
            c = md5ii(c, d, a, b, x[i + 10], 15, -1051523)
            b = md5ii(b, c, d, a, x[i + 1], 21, -2054922799)
            a = md5ii(a, b, c, d, x[i + 8], 6, 1873313359)
            d = md5ii(d, a, b, c, x[i + 15], 10, -30611744)
            c = md5ii(c, d, a, b, x[i + 6], 15, -1560198380)
            b = md5ii(b, c, d, a, x[i + 13], 21, 1309151649)
            a = md5ii(a, b, c, d, x[i + 4], 6, -145523070)
            d = md5ii(d, a, b, c, x[i + 11], 10, -1120210379)
            c = md5ii(c, d, a, b, x[i + 2], 15, 718787259)
            b = md5ii(b, c, d, a, x[i + 9], 21, -343485551)

            a = safeAdd(a, olda)
            b = safeAdd(b, oldb)
            c = safeAdd(c, oldc)
            d = safeAdd(d, oldd)
        }
        return [a, b, c, d]
    }

    
    function binl2rstr (input) {
        var i
        var output = ''
        var length32 = input.length * 32
        for (i = 0; i < length32; i += 8) {
            output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xff)
        }
        return output
    }

    
    function rstr2binl (input) {
        var i
        var output = []
        output[(input.length >> 2) - 1] = undefined
        for (i = 0; i < output.length; i += 1) {
            output[i] = 0
        }
        var length8 = input.length * 8
        for (i = 0; i < length8; i += 8) {
            output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << (i % 32)
        }
        return output
    }

    
    function rstrMD5 (s) {
        return binl2rstr(binlMD5(rstr2binl(s), s.length * 8))
    }

    
    function rstrHMACMD5 (key, data) {
        var i
        var bkey = rstr2binl(key)
        var ipad = []
        var opad = []
        var hash
        ipad[15] = opad[15] = undefined
        if (bkey.length > 16) {
            bkey = binlMD5(bkey, key.length * 8)
        }
        for (i = 0; i < 16; i += 1) {
            ipad[i] = bkey[i] ^ 0x36363636
            opad[i] = bkey[i] ^ 0x5c5c5c5c
        }
        hash = binlMD5(ipad.concat(rstr2binl(data)), 512 + data.length * 8)
        return binl2rstr(binlMD5(opad.concat(hash), 512 + 128))
    }

    
    function rstr2hex (input) {
        var hexTab = '0123456789abcdef'
        var output = ''
        var x
        var i
        for (i = 0; i < input.length; i += 1) {
            x = input.charCodeAt(i)
            output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f)
        }
        return output
    }

    
    function str2rstrUTF8 (input) {
        return unescape(encodeURIComponent(input))
    }

    
    function rawMD5 (s) {
        return rstrMD5(str2rstrUTF8(s))
    }
    function hexMD5 (s) {
        return rstr2hex(rawMD5(s))
    }
    function rawHMACMD5 (k, d) {
        return rstrHMACMD5(str2rstrUTF8(k), str2rstrUTF8(d))
    }
    function hexHMACMD5 (k, d) {
        return rstr2hex(rawHMACMD5(k, d))
    }

    function md5 (string, key, raw) {
        if (!key) {
            if (!raw) {
                return hexMD5(string)
            }
            return rawMD5(string)
        }
        if (!raw) {
            return hexHMACMD5(key, string)
        }
        return rawHMACMD5(key, string)
    }

    if (typeof define === 'function' && define.amd) {
        define(function () {
            return md5
        })
    } else if (typeof module === 'object' && module.exports) {
        module.exports = md5
    } else {
        $.md5 = md5
    }
})(this)

前端密码进行加密

①、login.js文件

layui.use(["jquery","layer"],()=>{
    //得到layuo中封装的jQuery
    let $=layui.jquery
    let layer=layui.layer
    //给登录按钮设置事件
    $(login).click(()=>{
        console.log("login....")
        //取表单的值
        let mobile=$("#mobile").val()
        let password=$("#password").val()
        //前端加密的盐
        let salt = "f1g2h3j4";
        if(password){
            //将密码和盐混一起
            password=salt.charAt(1) + "" + salt.charAt(5) + password + salt.charAt(0) + "" + salt.charAt(3);
            //进行md5加密
            password=md5(password)
        }
        console.log(password)
        //将数据给后台（前端分离axios  普通开发ajax）
        $.ajax({
            url: "/user/login",//后台登录接口
            data:{ //需要携带的数据
                mobile,
                password
            },
            dataType:"json",//后台给你的数据类型
            success(e){//成功的回调函数
                layer.msg(e.message,{icon:6})
            },
            error(e){//报错的回调函数

            },
        })
    })
  }
)

UserServiceImpl：

//在比较密码
//二重加密
String salt=user.getSalt();
String newPassword=MD5Utils.formPassToDbPass(userVo.getPassword(),salt);
//将前台的加密和后端的盐再次加密
if(newPassword.equals(user.getPassword())){
    throw new BusinessException(ResponseResultCode.USER_PASSWORD_NOT_MATCH);
}
return ResponseResult.success();

加密密码实现

五，全局异常错误

UserVo增加相关注解

package com.hmf.seckill.vo;

import com.hmf.seckill.util.response.ResponseResultCode;
import com.hmf.seckill.util.validate.IsMobile;
import com.hmf.seckill.util.validate.IsRequired;
import lombok.Data;
import org.aspectj.apache.bcel.classfile.Code;

import javax.validation.constraints.NotEmpty;

@Data
public class UserVo {

    @IsMobile(code = ResponseResultCode.USER_ACCOUNT_NOT_MOBLIE)
    private String mobile;
    @IsRequired(code = ResponseResultCode.USER_CREDENTIAL_NOT_BE_EMPTY)
    private String password;
}

导入帮助包validate，异常抓获

（1）IsIsMobile

package com.hmf.seckill.util.validate;

import com.hmf.seckill.util.response.ResponseResultCode;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

//文档
@documented
@Constraint(
        validatedBy = {IsIsMobilevalidator.class}
)
@Target({ElementType.METHOD, ElementType.FIELD,ElementType.PARAMETER})
//运行的作用域
@Retention(RetentionPolicy.RUNTIME)
public @interface IsMobile {

    ResponseResultCode code() default ResponseResultCode.UNKNOWN;

    String message() default "{javax.validation.constraints.NotEmpty.message}";

    Class[] groups() default {};

    Class[] payload() default {};
}

IsMobilevalidator（IsMobile的解析类）

package com.hmf.seckill.util.validate;

import com.hmf.seckill.util.ValidatorUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;


public class IsIsMobilevalidator implements ConstraintValidator {

    //当前是否验证成功
    @Override
    public boolean isValid(String mobile, ConstraintValidatorContext constraintValidatorContext) {
        return ValidatorUtils.isMobile(mobile);
    }
}

IsRequired

package com.hmf.seckill.util.validate;

import com.hmf.seckill.util.response.ResponseResultCode;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

//文档
@documented
@Constraint(
        
        validatedBy = {IsRequiredValidator.class}
)
@Target({ElementType.METHOD, ElementType.FIELD,ElementType.PARAMETER})
//运行的作用域
@Retention(RetentionPolicy.RUNTIME)
public @interface IsRequired {

    String message() default "{javax.validation.constraints.NotEmpty.message}";

    Class[] groups() default {};

    Class[] payload() default {};

    ResponseResultCode code();
}

IsRequiredValidator

package com.hmf.seckill.util.validate;

import com.hmf.seckill.util.ValidatorUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;


public class IsRequiredValidator implements ConstraintValidator {

    //当前是否验证成功
    @Override
    public boolean isValid(String mobile, ConstraintValidatorContext constraintValidatorContext) {
        return ValidatorUtils.isMobile(mobile);
    }
}

ThrowableAdvice

package com.hmf.seckill.util.response;

import com.hmf.seckill.exception.BusinessException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.ui.Model;
import org.springframework.validation.BindException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@SuppressWarnings("all")
@RestControllerAdvice
@Slf4j
public class ThrowableAdvice {

    @JsonResponseResult
    @ExceptionHandler(value = {BusinessException.class})
    public ResponseResultCode globalBusinessException(Model m, Exception e) {
        log.error(e.toString());
        return ((BusinessException) e).getResponseResultCode();
    }

    @JsonResponseResult
    @ExceptionHandler(value = {BindException.class})
    public ResponseResultCode globalBindException(Model m, Exception e) {
        log.error(e.toString());
        BindException error = (BindException) e;
        return (ResponseResultCode) error.getFieldError().getArguments()[1];
    }

    @JsonResponseResult
    @ExceptionHandler(value = {Throwable.class})
    public ResponseResultCode globalException(Model m, Exception e) {
        log.error(e.toString());
        return ResponseResultCode.UNKNOWN;
    }

}

在UserController类方法中加入注解

实现类抛出异常

（1）UserServiceImpl：

package com.hmf.seckill.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.hmf.seckill.exception.BusinessException;
import com.hmf.seckill.pojo.User;
import com.hmf.seckill.mapper.UserMapper;
import com.hmf.seckill.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmf.seckill.util.MD5Utils;
import com.hmf.seckill.util.ValidatorUtils;
import com.hmf.seckill.util.response.ResponseResult;
import com.hmf.seckill.util.response.ResponseResultCode;
import com.hmf.seckill.vo.UserVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;

import javax.swing.text.BadLocationException;


@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {

    @Override
    public ResponseResult findByAccount(UserVo userVo) {
        //先判断信息是否符合
        if(!ValidatorUtils.isMobile(userVo.getMobile())){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_MOBLIE);
        }
        if(StringUtils.isBlank(userVo.getPassword())){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_MOBLIE);
        }
        //再看数据库查出对应的用户
        User user=this.getOne(new QueryWrapper().eq("id",userVo.getMobile()));
        if(user==null){
            throw new BusinessException(ResponseResultCode.USER_ACCOUNT_NOT_FIND);
        }
        //在比较密码
        //二重加密
        String salt=user.getSalt();
        String newPassword=MD5Utils.formPassToDbPass(userVo.getPassword(),salt);
        //将前台的加密和后端的盐再次加密
        if(newPassword.equals(user.getPassword())){
            throw new BusinessException(ResponseResultCode.USER_PASSWORD_NOT_MATCH);
        }
        return ResponseResult.success();
    }

}

测试

结束

秒杀项目登录

三、前端构建

四、MD5加密

1、导入帮助包与exception包

在UserController类方法中加入注解

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