实习知识整理10：渲染默认地址以及实现渲染并选择其他地址

news2024/11/16 19:26:00

1. 渲染默认地址思路分析

（1）如果我们需要获取到默认地址可以通过userId从地址表中查找，因为从商品详情页点击购买按钮时，只传递商品的相关信息，所以我们就需要从session中获取用户的信息userId

（2）所以可以写个通过userId从地址表中查找默认地址的方法，然后放入mav中，一起携带到订单信息页面

（3）在订单信息页面进行渲染操作

AddressMapper.java

public interface AddressMapper {
    // 1. 根据用户编号查询该用户的默认地址
    Address findDefaultAddressByUserId(Integer userId);

}

AddressMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.shopping.mapper.AddressMapper">

    <resultMap id="baseAddressResultMap" type="Address">
        <id column="ADDRESS_ID" property="addressId"></id>
        <result column="USER_ID" property="userId"></result>
        <result column="ADDRESS" property="address"></result>
        <result column="PHONE" property="phone"></result>
        <result column="LINKMAN" property="linkman"></result>
        <result column="DEFAULT_ADDRESS" property="defaultAddress"></result>
        <result column="ADDRESS_NOTE" property="addressNote"></result>
    </resultMap>
    <!-- 根据用户ID查询默认地址 -->
    <select id="findDefaultAddressByUserId" resultMap="baseAddressResultMap">
        SELECT ADDRESS_ID, USER_ID, ADDRESS, PHONE, LINKMAN, DEFAULT_ADDRESS, ADDRESS_NOTE FROM address
        WHERE USER_ID = #{userId} AND DEFAULT_ADDRESS = 1
    </select>

</mapper>

AddressService.java 接口

public interface AddressService {
    // 1. 根据用户编号查询该用户的默认地址
    Address findDefaultAddressByUserId(Integer userId);
}

AddressServiceImpl.java 实现类

public class AddressServiceImpl implements AddressService {
    @Resource
    AddressMapper addressMapper;

    @Override
    public Address findDefaultAddressByUserId(Integer userId) {
        return addressMapper.findDefaultAddressByUserId(userId);
    }

}

OrderController.java

mav中需要添加默认地址，然后携带到新的页面

confirmOrder.html页面

2. 实现渲染并选择其他地址

与上面一样，这边是通过userId来查询该用户对应的所有地址信息

AddressMapper.java

AddressMapper.xml

AddressService.java

AddressServiceImpl.java

AddressController.java

@Controller
@RequestMapping("/address")
public class AddressController {

    @Autowired
    AddressService addressService;

    // 根据用户编号查询地址列表
    // http://localhost:8082/project/address/findUserAddresses/{userId}
    @RequestMapping("/findUserAddresses/{userId}")
    @ResponseBody
    public List<Address> findUserAddresses(@PathVariable Integer userId) throws Exception {
        return addressService.findAllAddressByUserId(userId);
    }
}

confirmOrder.html