加入购物车（springboot项目）

目录

一、用户登录跳转界面

二、参数解析器以及购物车后台

 三、商品详情

四、购物车查询以及新增的前台

 五、购物车删除及修改功能

一、用户登录跳转界面

 js

$(function () {
    alert(233);
//    给登录按钮添加事件
    $("#login").click(function () {
        let mobile = $("#mobile").val();
        let password = $("#password").val();

        console.log("mobile=%s,password=%s",mobile,password);

        //1.密码加密
        //1) 定义固定盐
        let salt='f1g2h3j4';
        //2) 固定盐混淆
        let temp=salt.charAt(1)+""+salt.charAt(5)+password+salt.charAt(0)+""+salt.charAt(3);
        //3) 使用MD5完成前端第一次加密
        let pwd=md5(temp);

        //2.向后台发起登录ajax请求
        $.post('/user/toLogin',{
            mobile:mobile,
            password:pwd
        },function(rs){
            if(rs.code!=200){//登录失败
                alert(rs.msg);
            }else
                //alert(rs.msg);
              location.href="/";//登录成功跳转index.html
        },'json');
    });
});

 user.java

package com.zking.spbootpro.model;
 
import com.baomidou.mybatisplus.annotation.TableName;
import java.time.LocalDateTime;
import java.io.Serializable;
import java.util.Date;
 
import lombok.Data;
import lombok.EqualsAndHashCode;
 
/**
 * 
 * 用户信息表
 * 
 *
 * @author zking
 * @since 2022-11-05
 */
@Data
@EqualsAndHashCode(callSuper = false)
@TableName("t_user")
public class User implements Serializable {
 
        private  long id;
 
    /**
     * 昵称
     */
    private String nickname;
 
    /**
     * MD5(MD5(pass明文+固定salt)+salt)
     */
    private String password;
 
    /**
     * 随机salt
     */
    private String salt;
 
    /**
     * 注册时间
     */
    private Date registerDate;
 
    /**
     * 最后一次登录时间
     */
    private LocalDateTime lastLoginDate;
 
    /**
     * 登录次数
     */
    private Integer loginCount;
 
 
}

package com.zking.spbootpro.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zking.spbootpro.exception.BusinessException;
import com.zking.spbootpro.mapper.UserMapper;
import com.zking.spbootpro.model.User;
import com.zking.spbootpro.model.dto.UserDto;
import com.zking.spbootpro.service.IRedisService;
import com.zking.spbootpro.service.IUserService;
import com.zking.spbootpro.utils.CookieUtils;
import com.zking.spbootpro.utils.JsonResponseBody;
import com.zking.spbootpro.utils.JsonResponseStatus;
import com.zking.spbootpro.utils.MD5Utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.UUID;

/**
 *

 * 用户信息表 服务实现类
 *

 *
 * @author zking
 * @since 2022-11-04
 */
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private IRedisService redisService;

    @Override
    public JsonResponseBody toLogin(UserDto userDto, HttpServletRequest req, HttpServletResponse resp) {
//        1.5.1）判断mobile和password是否为空
//        1.5.2）判断mobile格式是否正确
//        1.5.3）根据用户手机号码查询用户是否存在
        User user = userMapper.selectOne(new QueryWrapper()
                .eq("id", userDto.getMobile()));

//        1.5.4）校验账号
        if (user == null)
            throw new BusinessException(JsonResponseStatus.USER_USERNAME_ERROR);

//        前台传递到后台的密码，要进过工具类md5加密一次，才有可能跟数据库密码匹配上
        String pwd = MD5Utils.formPassToDbPass(userDto.getPassword(), user.getSalt());
//        1.5.5）校验密码
        if(!pwd.equals(user.getPassword()))
            throw new BusinessException(JsonResponseStatus.USER_PASSWORD_ERROR);

        //6.将登陆用户对象与token令牌进行绑定保存到cookie和redis
        //创建登陆令牌token
        String token= UUID.randomUUID().toString().replace("-","");
        //将token令牌保存到cookie中
        CookieUtils.setCookie(req,resp,"token",token,7200);
        //将登陆token令牌与用户对象user绑定到redis中
        redisService.setUserToRedis(token,user);
        //将用户登陆的昵称设置到cookie中
        CookieUtils.setCookie(req,resp,"nickname",user.getNickname());
        return new JsonResponseBody<>();
    }
}
 

二、参数解析器以及购物车后台

代码

    
        

            

            
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UserArgumentResovler  参数解析器

package com.zking.spbootpro.config;
 
import com.zking.spbootpro.exception.BusinessException;
import com.zking.spbootpro.model.User;
import com.zking.spbootpro.service.IredisService;
import com.zking.spbootpro.utils.CookieUtils;
import com.zking.spbootpro.utils.JsonResponseStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;
import org.springframework.web.servlet.HandlerExceptionResolver;
 
import javax.servlet.http.HttpServletRequest;
 
/**
 * 参数解析器
 * @author 锦鲤
 * @site www.lucy.com
 * @company xxx公司
 * @create  2022-11-07 18:25
 */
@Component
public class UserArgumentResovler implements HandlerMethodArgumentResolver {
 
    @Autowired
     private IredisService  iredisService;
 
    /**
     * supportsParameter的方法返回值
     * true:会使用下面resolveArgument
     * false：则不调用
     * @param methodParameter
     * @return
     */
    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.getParameterType()== User.class;
    }
 
    /**
     * resolveArgument；
     * 具体的业务代码处理
     * @param methodParameter
     * @param modelAndViewContainer
     * @param nativeWebRequest
     * @param webDataBinderFactory
     * @return
     * @throws Exception
     */
    @Override
    public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
       HttpServletRequest request =(HttpServletRequest) nativeWebRequest.getNativeRequest();
       String token = CookieUtils.getCookieValue(request,"token");
        if(token==null){
            throw  new BusinessException(JsonResponseStatus.TOKEN_EEROR);
        }
        User user=  iredisService.getUserToRedis(token);
        if(user ==null){
            throw  new BusinessException(JsonResponseStatus.TOKEN_EEROR);
        }
 
        return user;
    }
}

 WebConfig  

package com.zking.spbootpro.config;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
import java.util.List;
 
/**
 * @author 锦鲤
 * @site www.lucy.com
 * @company xxx公司
 * @create  2022-11-07 18:42
 *
 */
@Configuration
public class WebConfig  implements WebMvcConfigurer {
 
    @Autowired
    private UserArgumentResovler userArgumentResovler;
 
    /**
     * 配置静态资源访问映射，使用了WebMvcConfigurer会覆盖原有的application.yml文件中的静态资源配置
     * @param registry
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/**")
                .addResourceLocations("classpath:/static/");
    }
 
    /**
     * 添加自定义的参数解析器
     * @param resolvers
     */
    @Override
    public void addArgumentResolvers(List resolvers) {
        resolvers.add(userArgumentResovler);
    }
}

购物车后台搭建

实体类ShopCar 、ShopCarItem 

package com.zking.spbootpro.model.vo;
 
import java.util.*