自学实前后端践项目2 phone Store 6

接着上期

1.WebMvcConfigurer配置类其实是Spring内部的一种配置方式，采用JavaBean的形式来代替传统的xml配置文件形式进行针对框架个性化定制，可以自定义一些Handler，Interceptor，ViewResolver，MessageConverter。基于java-based方式的spring mvc配置，需要创建一个配置类并实现WebMvcConfigurer 接口；

在项目创建文件夹config在文件夹下创建CorsConfig

package com.southwind2.phone_store_demo.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class CorsConfig implements WebMvcConfigurer {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOriginPatterns("*")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .allowCredentials(true)
                .maxAge(3600)
                .allowedHeaders("*");
    }
}

2.创建一个dto文件夹创建类OrderDTO便于创建订单时使用类

package com.southwind2.phone_store_demo.dto;

import lombok.Data;

@Data
public class OrderDTO {
    private String orderId;
    private String buyerName;
    private String buyerPhone;
    private String buyerAddress;
    private Integer specsId;
    private Integer phoneQuantity;
}

3.创建两个会使用到的枚举创建文件夹enums

1）PayStatusEnum支付状态枚举

package com.southwind2.phone_store_demo.enums;

import lombok.Getter;

@Getter
public enum PayStatusEnum {
    UNPIAD(0,"未支付"),
    PIAD(1,"已支付");
    private Integer code;
    private String msg;
    PayStatusEnum(Integer code,String msg){
        this.code=code;
        this.msg=msg;
    }
}

2）ResultEnum返回结果提示枚举

package com.southwind2.phone_store_demo.enums;

import lombok.Getter;

@Getter
public enum ResultEnum {
    PHONE_STOCK_ERROR(0,"手机库存不足"),
    ORDER_NOT_EXIST(1,"订单不存在"),
   PHONE_NOT_EXIST(3,"手机不存在"),
    SPECS_NOT_EXIST(2,"规格不存在");
    private  Integer code;
    private  String msg;
    ResultEnum(Integer code,String msg){
        this.code=code;
        this.msg=msg;
    }
}

4.创建文件夹exception抛出异常提示文件

package com.southwind2.phone_store_demo.exception;

import com.southwind2.phone_store_demo.enums.ResultEnum;

public class PhoneException extends RuntimeException {
    public PhoneException(ResultEnum resultEnum) {
        super(resultEnum.getMsg());
    }

    public PhoneException(String error) {
        super(error);
    }
}

5.创建错误提示类文件夹from

1）AddressForm

package com.southwind2.phone_store_demo.from;


import lombok.Data;

import javax.validation.constraints.NotEmpty;

@Data
public class AddressForm {
    private Integer id;
    @NotEmpty(message = "姓名不能为空")
    private String name;
    @NotEmpty(message = "电话不能为空")
    private String tel;
    @NotEmpty(message = "省份不能为空")
    private String province;
    @NotEmpty(message = "城市不能为空")
    private String city;
    @NotEmpty(message = "区不能为空")
    private String county;
    @NotEmpty(message = "编码不能为空")
    private String areaCode;
    @NotEmpty(message = "地址不能为空")
    private String addressDetail;

}

2）OrderForm

package com.southwind2.phone_store_demo.from;

import lombok.Data;

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;

@Data
public class OrderForm {
    @NotEmpty(message = "姓名不能为空")
    private String name;
    @NotEmpty(message = "电话不能为空")
    private String tel;
    @NotEmpty(message = "地址不能为空")
    private String address;
    @NotNull(message = "规格不能为空")
    private Integer specsId;
    @NotNull(message = "数量不能为空")
    private Integer quantity;
}