Spring Boot 构建电商基础秒杀项目 (二) 使用 Spring MVC 方式获取用户信息

2019-03-16

SpringBoot构建电商基础秒杀项目学习笔记

修改 DOMapper

在 UserPasswordDOMapper.xml 添加：

<select id="selectByUserId" parameterType="java.lang.Integer" resultMap="BaseResultMap">
  select
  <include refid="Base_Column_List" />
  from user_password
  where user_id = #{userId,jdbcType=INTEGER}
</select>

在 UserPasswordDOMapper 添加：

1	UserPasswordDO selectByUserId(Integer userId);

添加 model

public class UserModel {

    private Integer id;
    private String name;
    private Byte gender;
    private Integer age;
    private String telphone;
    private String registerMode;
    private String thirdPartyId;

    private String encrptPassword;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Byte getGender() {
        return gender;
    }

    public void setGender(Byte gender) {
        this.gender = gender;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getTelphone() {
        return telphone;
    }

    public void setTelphone(String telphone) {
        this.telphone = telphone;
    }

    public String getRegisterMode() {
        return registerMode;
    }

    public void setRegisterMode(String registerMode) {
        this.registerMode = registerMode;
    }

    public String getThirdPartyId() {
        return thirdPartyId;
    }

    public void setThirdPartyId(String thirdPartyId) {
        this.thirdPartyId = thirdPartyId;
    }

    public String getEncrptPassword() {
        return encrptPassword;
    }

    public void setEncrptPassword(String encrptPassword) {
        this.encrptPassword = encrptPassword;
    }

}

添加 service

添加接口：

public interface UserService {

    UserModel getUserById(Integer id);
}

添加接口的实现：

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDOMapper userDOMapper;

    @Autowired
    private UserPasswordDOMapper userPasswordDOMapper;

    @Override
    public UserModel getUserById(Integer id){
        UserDO userDO = userDOMapper.selectByPrimaryKey(id);

        if(userDO == null){
            return null;
        }

        UserPasswordDO userPasswordDO = userPasswordDOMapper.selectByUserId(userDO.getId());

        return convertFromDataObject(userDO, userPasswordDO);

    }

    private UserModel convertFromDataObject(UserDO userDO, UserPasswordDO userPasswordDO){
        if(userDO == null){
            return null;
        }

        UserModel userModel = new UserModel();
        BeanUtils.copyProperties(userDO, userModel);

        if(userPasswordDO != null){
            userModel.setEncrptPassword(userPasswordDO.getEncrptPassword());
        }

        return userModel;
    }
}

添加 viewobject

public class UserVO {

    private Integer id;
    private String name;
    private Byte gender;
    private Integer age;
    private String telphone;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Byte getGender() {
        return gender;
    }

    public void setGender(Byte gender) {
        this.gender = gender;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getTelphone() {
        return telphone;
    }

    public void setTelphone(String telphone) {
        this.telphone = telphone;
    }
}

添加 controller

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

    @Autowired
    private UserService userService;

    @RequestMapping("/get")
    @ResponseBody
    public UserVO getUser(@RequestParam(name="id") Integer id){
        UserModel userModel = userService.getUserById(id);

        return convertFromModel(userModel);
    }

    private UserVO convertFromModel(UserModel userModel){
        if(userModel == null){
            return null;
        }

        UserVO userVO = new UserVO();
        BeanUtils.copyProperties(userModel, userVO);

        return userVO;
    }
}

data object: 与数据库完全映射，不包含任何逻辑
model: 业务交互逻辑模型
view object: 前端展示数据

源码：spring-boot-seckill