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Java十天上手做一个自己的web商城笔记-新增收获地址（8）_收货地址如何使用java实现

作者：羊村懒王 | 2024-03-05 14:18:41

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收货地址如何使用java实现

该系列博客主要记录笔者的开发过程，参考B站系列视频：【SpringBoot项目实战完整版】SpringBoot+MyBatis+MySQL电脑商城项目实战_哔哩哔哩_bilibili

所用的一些版本信息：

IDEA开发、JDK1.8版本以上、maven3.61版本以上，springboot，DataGrip管理数据库

新增收获地址：

0 前置准备

0.1 功能规划

当前收货地址功能模块：列表的展示、修改、删除、设置默认、新增地址。

开发顺序：新增收获地址，列表展示，设置默认收获地址、删除收获地址、修改收获地址。

0.2 创建实体类

在 store\src\main\java\com\cy\store\entity 目录下创建实体类:


package com.cy.store.entity;
 
import java.io.Serializable;
 
/** 收货地址数据的实体类 */
public class Address extends BaseEntity implements Serializable {
    private Integer aid;
    private Integer uid;
    private String name;
    private String provinceName;
    private String provinceCode;
    private String cityName;
    private String cityCode;
    private String areaName;
    private String areaCode;
    private String zip;
    private String address;
    private String phone;
    private String tel;
    private String tag;
    private Integer isDefault;
 
    public Integer getAid() {
        return aid;
    }
 
    public void setAid(Integer aid) {
        this.aid = aid;
    }
 
    public Integer getUid() {
        return uid;
    }
 
    public void setUid(Integer uid) {
        this.uid = uid;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public String getProvinceName() {
        return provinceName;
    }
 
    public void setProvinceName(String provinceName) {
        this.provinceName = provinceName;
    }
 
    public String getProvinceCode() {
        return provinceCode;
    }
 
    public void setProvinceCode(String provinceCode) {
        this.provinceCode = provinceCode;
    }
 
    public String getCityName() {
        return cityName;
    }
 
    public void setCityName(String cityName) {
        this.cityName = cityName;
    }
 
    public String getCityCode() {
        return cityCode;
    }
 
    public void setCityCode(String cityCode) {
        this.cityCode = cityCode;
    }
 
    public String getAreaName() {
        return areaName;
    }
 
    public void setAreaName(String areaName) {
        this.areaName = areaName;
    }
 
    public String getAreaCode() {
        return areaCode;
    }
 
    public void setAreaCode(String areaCode) {
        this.areaCode = areaCode;
    }
 
    public String getZip() {
        return zip;
    }
 
    public void setZip(String zip) {
        this.zip = zip;
    }
 
    public String getAddress() {
        return address;
    }
 
    public void setAddress(String address) {
        this.address = address;
    }
 
    public String getPhone() {
        return phone;
    }
 
    public void setPhone(String phone) {
        this.phone = phone;
    }
 
    public String getTel() {
        return tel;
    }
 
    public void setTel(String tel) {
        this.tel = tel;
    }
 
    public String getTag() {
        return tag;
    }
 
    public void setTag(String tag) {
        this.tag = tag;
    }
 
    public Integer getIsDefault() {
        return isDefault;
    }
 
    public void setIsDefault(Integer isDefault) {
        this.isDefault = isDefault;
    }
 
    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Address)) return false;
 
        Address address1 = (Address) o;
 
        if (getAid() != null ? !getAid().equals(address1.getAid()) : address1.getAid() != null) return false;
        if (getUid() != null ? !getUid().equals(address1.getUid()) : address1.getUid() != null) return false;
        if (getName() != null ? !getName().equals(address1.getName()) : address1.getName() != null) return false;
        if (getProvinceName() != null ? !getProvinceName().equals(address1.getProvinceName()) : address1.getProvinceName() != null)
            return false;
        if (getProvinceCode() != null ? !getProvinceCode().equals(address1.getProvinceCode()) : address1.getProvinceCode() != null)
            return false;
        if (getCityName() != null ? !getCityName().equals(address1.getCityName()) : address1.getCityName() != null)
            return false;
        if (getCityCode() != null ? !getCityCode().equals(address1.getCityCode()) : address1.getCityCode() != null)
            return false;
        if (getAreaName() != null ? !getAreaName().equals(address1.getAreaName()) : address1.getAreaName() != null)
            return false;
        if (getAreaCode() != null ? !getAreaCode().equals(address1.getAreaCode()) : address1.getAreaCode() != null)
            return false;
        if (getZip() != null ? !getZip().equals(address1.getZip()) : address1.getZip() != null) return false;
        if (getAddress() != null ? !getAddress().equals(address1.getAddress()) : address1.getAddress() != null)
            return false;
        if (getPhone() != null ? !getPhone().equals(address1.getPhone()) : address1.getPhone() != null) return false;
        if (getTel() != null ? !getTel().equals(address1.getTel()) : address1.getTel() != null) return false;
        if (getTag() != null ? !getTag().equals(address1.getTag()) : address1.getTag() != null) return false;
        return getIsDefault() != null ? getIsDefault().equals(address1.getIsDefault()) : address1.getIsDefault() == null;
    }
 
    @Override
    public int hashCode() {
        int result = getAid() != null ? getAid().hashCode() : 0;
        result = 31 * result + (getUid() != null ? getUid().hashCode() : 0);
        result = 31 * result + (getName() != null ? getName().hashCode() : 0);
        result = 31 * result + (getProvinceName() != null ? getProvinceName().hashCode() : 0);
        result = 31 * result + (getProvinceCode() != null ? getProvinceCode().hashCode() : 0);
        result = 31 * result + (getCityName() != null ? getCityName().hashCode() : 0);
        result = 31 * result + (getCityCode() != null ? getCityCode().hashCode() : 0);
        result = 31 * result + (getAreaName() != null ? getAreaName().hashCode() : 0);
        result = 31 * result + (getAreaCode() != null ? getAreaCode().hashCode() : 0);
        result = 31 * result + (getZip() != null ? getZip().hashCode() : 0);
        result = 31 * result + (getAddress() != null ? getAddress().hashCode() : 0);
        result = 31 * result + (getPhone() != null ? getPhone().hashCode() : 0);
        result = 31 * result + (getTel() != null ? getTel().hashCode() : 0);
        result = 31 * result + (getTag() != null ? getTag().hashCode() : 0);
        result = 31 * result + (getIsDefault() != null ? getIsDefault().hashCode() : 0);
        return result;
    }
 
    @Override
    public String toString() {
        return "Address{" +
                "aid=" + aid +
                ", uid=" + uid +
                ", name='" + name + '\'' +
                ", provinceName='" + provinceName + '\'' +
                ", provinceCode='" + provinceCode + '\'' +
                ", cityName='" + cityName + '\'' +
                ", cityCode='" + cityCode + '\'' +
                ", areaName='" + areaName + '\'' +
                ", areaCode='" + areaCode + '\'' +
                ", zip='" + zip + '\'' +
                ", address='" + address + '\'' +
                ", phone='" + phone + '\'' +
                ", tel='" + tel + '\'' +
                ", tag='" + tag + '\'' +
                ", isDefault=" + isDefault +
                "} " + super.toString();
    }
}

1 持久层

1.0 构建数据表

在利用dataGrip新建一个底层的数据表：


CREATE TABLE t_address (
	aid INT AUTO_INCREMENT COMMENT '收货地址id',
	uid INT COMMENT '归属的用户id',
	name VARCHAR(20) COMMENT '收货人姓名',
	province_name VARCHAR(15) COMMENT '省-名称',
	province_code CHAR(6) COMMENT '省-行政代号',
	city_name VARCHAR(15) COMMENT '市-名称',
	city_code CHAR(6) COMMENT '市-行政代号',
	area_name VARCHAR(15) COMMENT '区-名称',
	area_code CHAR(6) COMMENT '区-行政代号',
	zip CHAR(6) COMMENT '邮政编码',
	address VARCHAR(50) COMMENT '详细地址',
	phone VARCHAR(20) COMMENT '手机',
	tel VARCHAR(20) COMMENT '固话',
	tag VARCHAR(6) COMMENT '标签',
	is_default INT COMMENT '是否默认：0-不默认，1-默认',
	created_user VARCHAR(20) COMMENT '创建人',
	created_time DATETIME COMMENT '创建时间',
	modified_user VARCHAR(20) COMMENT '修改人',
	modified_time DATETIME COMMENT '修改时间',
	PRIMARY KEY (aid)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

1.1 规划SQL语句

1.插入数据语句。

2.用户收获地址最多20条数据相应，在插入用户数据前做查询操作。存在一个逻辑控制的异常

1.2 接口与抽象方法

在store\src\main\java\com\cy\store\mapper下创建AddressMapper


package com.cy.store.mapper;
 
import com.cy.store.entity.Address;
 
public interface AddressMapper {
    /**
     * 插入地址数据
     * @param address 地址
     * @return 影响行数
     */
    Integer insert(Address address);
 
    /**
     * 根据用户ID统计收获地址数量
     * @param uid 用户id
     * @return 数量
     */
    Integer countByUid(Integer uid);
}

1.3 配置SQL映射

在 store\src\main\resources\mapper 下新建地址的映射文件AddressMapper：


<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--namespace需要映射到java中的接口,指定路径-->
<mapper namespace="com.cy.store.mapper.AddressMapper">
 
    <resultMap id="AddressEntityMap" type="com.cy.store.entity.Address">
        <id column="aid" property="aid"/>
        <result column="province_code" property="provinceCode"/>
        <result column="province_name" property="provinceName"/>
        <result column="city_code" property="cityCode"/>
        <result column="city_name" property="cityName"/>
        <result column="area_code" property="areaCode"/>
        <result column="area_name" property="areaName"/>
        <result column="is_default" property="isDefault"/>
        <result column="created_user" property="createdUser"/>
        <result column="created_time" property="createdTime"/>
        <result column="modified_user" property="modifiedUser"/>
        <result column="modified_time" property="modifiedTime"/>
    </resultMap>
 
   <insert id="insert" useGeneratedKeys="true" keyProperty="aid">
        INSERT INTO t_address(
            uid, name, province_name, province_code, city_name, city_code, area_name, area_code, zip,
            address, phone, tel, tag, is_default, created_user, created_time, modified_user, modified_time
        )VALUE (
            #{uid}, #{name}, #{provinceName}, #{provinceCode}, #{cityName}, #{cityCode}, #{areaName},
            #{areaCode}, #{zip}, #{address}, #{phone}, #{tel}, #{tag}, #{isDefault}, #{createdUser},
            #{createdTime}, #{modifiedUser}, #{modifiedTime}
        )
   </insert>
 
    <select id="countByUid" resultMap="java.lang.Integer">
        SELECT count(*) FROM t_address WHERE uid = #{uid}
    </select>
</mapper>

1.4 单元测试

新建：store\src\test\java\com\cy\store\mapper\AddressMapperTests.java

编写测试函数:


package com.cy.store.mapper;
 
import com.cy.store.entity.Address;
import com.cy.store.entity.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
 
import javax.annotation.Resource;
import java.util.Date;
 
//@SpringBootTest：该注解表示标注当前类是个测试类，测试类不会随着项目一块打包发送
@SpringBootTest
//@RunWith：表示启动这个单元测试类（单元测试类时不能够运行的），需传递一个参数，必须是SpringRunner的实例类型
@RunWith(SpringRunner.class)
public class AddressMapperTests {
    //接口不能创建bean对象，但是mybatis创建了动态代理实现类帮我们进行解决
    @Resource
    private AddressMapper addressMapper;
    /**
     * 单元测试方法（可以独立运行，不启动整个项目）:
     * 1.必须被@Test修饰
     * 2.返回值类型必须是void
     * 3.方法的参数列表不能指定任何类型
     * 4.方法的访问修饰符必须是public
     */
    @Test
    public void insert(){
        Address address = new Address();
        address.setUid(12);
        address.setPhone("123123412");
        address.setName("女朋友");
        Integer rows = addressMapper.insert(address);
        System.out.println(rows);
    }
 
    @Test
    public void contByUid(){
        System.out.println(addressMapper.countByUid(12));
    }
}

2 业务层

2.0 规划业务：

1.首次插入，需要将该地址作为默认收获地址。

2.1 规划异常

1.查询结果大于等于20了，抛出AddressCountLimitException

新建:store\src\main\java\com\cy\store\service\ex\AddressCountLimitException.java


package com.cy.store.service.ex;
 
/** 收获地址超出限制 */
public class AddressCountLimitException extends ServiceException{
    public AddressCountLimitException() {
        super();
    }
 
    public AddressCountLimitException(String message) {
        super(message);
    }
 
    public AddressCountLimitException(String message, Throwable cause) {
        super(message, cause);
    }
 
    public AddressCountLimitException(Throwable cause) {
        super(cause);
    }
 
    protected AddressCountLimitException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
        super(message, cause, enableSuppression, writableStackTrace);
    }
}

2.插入异常，已经存在

2.2 接口与抽象方法

创建接口:

F:\projects\store\src\main\java\com\cy\store\service\IAddressService.java


package com.cy.store.service;
 
import com.cy.store.entity.Address;
 
/** 收获地址业务层接口 */
public interface IAddressService {
    /**
     * 新增收获地址
     * @param uid
     * @param username
     * @param address
     */
    void addNewAddress(Integer uid, String username, Address address);
}

2.3 实现抽象方法

在配置文件store\src\main\resources\application.yml中配置最大收获地址:


# 自己的配置
user:
  address:
    max-count = 20

实现方法store\src\main\java\com\cy\store\service\impl\AddressService.java:


package com.cy.store.service.impl;
 
import com.cy.store.entity.Address;
import com.cy.store.mapper.AddressMapper;
import com.cy.store.service.IAddressService;
import com.cy.store.service.ex.AddressCountLimitException;
import com.cy.store.service.ex.InsertException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
 
import java.util.Date;
 
/** 收获地址的实现类 */
public class AddressService implements IAddressService {
    @Autowired
    private AddressMapper addressMapper;
 
    // 收获地址最大数量
    @Value("${user.address.max-count}")
    public Integer maxCount;
 
    @Override
    public void addNewAddress(Integer uid, String username, Address address) {
        //查看收获地址是否达到上限
        Integer count = addressMapper.countByUid(uid);
        if(count >= maxCount){
            throw new AddressCountLimitException("收获地址超出上限");
        }
        //补全字段
        address.setUid(uid);
        address.setIsDefault(count==0?1:0);
        //补全四项日志
        address.setCreatedTime(new Date());
        address.setCreatedUser(username);
        address.setModifiedTime(new Date());
        address.setModifiedUser(username);
 
        //插入
        Integer rows = addressMapper.insert(address);
        if(rows!=1){
            throw new InsertException("插入时异常");
        }
    }
}

2.4 单元测试

新建:store\src\test\java\com\cy\store\service\AddressServiceTests.java


package com.cy.store.service;
 
import com.cy.store.entity.Address;
import com.cy.store.entity.User;
import com.cy.store.service.ex.ServiceException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
 
import javax.annotation.Resource;
 
//@SpringBootTest：该注解表示标注当前类是个测试类，测试类不会随着项目一块打包发送
@SpringBootTest
//@RunWith：表示启动这个单元测试类（单元测试类时不能够运行的），需传递一个参数，必须是SpringRunner的实例类型
@RunWith(SpringRunner.class)
public class AddressServiceImplTests {
    //接口不能创建bean对象，但是mybatis创建了动态代理实现类帮我们进行解决
    @Resource
    private IAddressService addressService;
 
    @Test
    public void addNewAddress(){
        Address address = new Address();
        address.setPhone("123123412");
        address.setName("男");
        addressService.addNewAddress(24, "管理员",address);
    }
 
}

3 控制层

3.1 处理异常

在store\src\main\java\com\cy\store\controller\BaseController.java中添加：

3.2 设计请求


url:/addresses/add_new_address
请求方式:post
请求参数:Address address, HttpSession session
返回数据:JsonResult<Void>

3.3 处理请求

创建文件:store\src\main\java\com\cy\store\controller\AddressController.java


package com.cy.store.controller;
 
import com.cy.store.entity.Address;
import com.cy.store.service.IAddressService;
import com.cy.store.util.JsonResult;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
 
//@Controller
@RestController //该注解等于@Controller + 方法上的@ResponseBody
@RequestMapping("addresses")
public class AddressController extends BaseController{
    @Resource
    private IAddressService addressService;
 
    @RequestMapping("add_new_address")
    //@ResponseBody //此方法响应结果以json格式进行数据的响应给前端
    public JsonResult<Void> addNewAddress(Address address, HttpSession session){
        Integer uid = getuidFromSession(session);
        String username = getusernameFromSession(session);
        addressService.addNewAddress(uid, username, address);
        return new JsonResult<Void>(OK);
    }
 
}

3.4 测试

登录后测试:

http://localhost:8081/addresses/add_new_address?name=tom

4 前端页面

在store\src\main\resources\static\web\address.html中添加ajax请求


		<script type="text/javascript">
			$("#btn-add-new-address").click(function(){
				$.ajax({
					url:"/addresses/add_new_address",
					type: "POST",
					data: $('#form-add-new-address').serialize(),
					dataType:"JSON",
					success:function (json){
						console.log(json)
						if(json.state == 200){
							alert("新增地址成功");
						}else{
							alert("新增地址失败" + json.message);
						}
					},
					error: function(xhr){
						alert("新增地址时产生未知异常" + xhr.message)
					}
				});
			});
		</script>

测试：

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