SpringBoot+Mybatis完成商品秒杀项目之用户模块开发（六）

最新推荐文章于 2022-09-12 11:07:41 发布

dong_learnning

最新推荐文章于 2022-09-12 11:07:41 发布

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本文详细介绍了用户登录功能的实现过程，包括UserController中的登录接口、UserService中的校验登录方法及其实现，以及前端界面的设计。同时，文章还讨论了如何优化校验规则，引入Hibernate Validator进行参数校验，确保用户输入的有效性和安全性。

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用户模型管理——用户登录功能实现

1.UserController中的用户登录接口

//用户登录接口
    @RequestMapping(value = "/login", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
    @ResponseBody
    public CommonReturnType login(@RequestParam(name = "telphone") String telphone,
                                  @RequestParam(name = "password") String password) throws BusinessException, UnsupportedEncodingException, NoSuchAlgorithmException {
        //入参校验
        if (StringUtils.isEmpty(telphone) || StringUtils.isEmpty(password)) {
            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);
        }

        //用户登录服务，用来校验用户登录是否合法
        //用户加密后的密码
        UserModel userModel = userService.validateLogin(telphone, this.EncodeByMd5(password));

        //将登陆凭证加入到用户登录成功的session内
        this.httpServletRequest.getSession().setAttribute("IS_LOGIN", true);
        this.httpServletRequest.getSession().setAttribute("LOGIN_USER", userModel);

        return CommonReturnType.create(null);

    }

2.UserService中的校验登录方法

/*
    telphone:用户注册手机
    encrptPassowrd:用户加密后的密码
     */
    UserModel validateLogin(String telphone, String encrptPassword) throws BusinessException;

3.UserServiceImpl的登录方法实现

@Override
    public UserModel validateLogin(String telphone, String encrptPassword) throws BusinessException {
        //通过用户手机获取用户信息
        UserDO userDO = userDOMapper.selectByTelphone(telphone);
        if (userDO == null) {
            throw new BusinessException(EmBusinessError.USER_LOOGIN_FAIL);
        }
        userPasswordDO userPasswordDO = userPasswordDOMapper.selectByUserId(userDO.getId());
        UserModel userModel = convertFromDataObject(userDO, userPasswordDO);

        //比对用户信息内加密的密码是否和传输进来的密码相匹配
        if (StringUtils.equals(encrptPassword, userModel.getEncrptPassword())) {
            throw new BusinessException(EmBusinessError.USER_LOOGIN_FAIL);
        }

        return userModel;
    }

4.UserDOMapper.xml中的新建方法

<select id="selectByTelphone" resultMap="BaseResultMap">
    select
    <include refid="Base_Column_List"/>
    from user_info
    where telphone = #{telphone,jdbcType=VARCHAR}
</select>

5.UserDOMapper中建立映射

//根据电话号码取得用户对象
UserDO selectByTelphone(String telphone);

6.新建前端界面：login.html

<body class="login">
    <div class="content">
        <h3 class="form-title">用户登录</h3>
        <div class="form-group">
            <label class="control-label">手机号</label>
            <div>
                <input class="form-control" type="text" placeholder="手机号" name="telphone" id="telphone"/>
            </div>
        </div>
        <div class="form-group">
            <label class="control-label">密码</label>
            <div>
                <input class="form-control" type="password" placeholder="密码" name="password" id="password"/>
            </div>
        </div>
        <div class="form-actions">
            <button class="btn blue" id="login" type="submit">
                登录
            </button>
            <button class="btn green" id="register" type="submit">
                注册
            </button>
        </div>
    </div>

</body>

<script>
    jQuery(document).ready(function () {

        //绑定注册按钮的click事件用于跳转到注册页面
        $("#register").on("click",function () {
            window.location.href = "getotp.html";
        });

        //绑定登录按钮的click事件用于登录
        $("#login").on("click",function () {

            var telphone=$("#telphone").val();
            var password=$("#password").val();
            if (telphone==null || telphone=="") {
                alert("手机号不能为空");
                return false;
            }
            if (password==null || password=="") {
                alert("密码不能为空");
                return false;
            }

            //映射到后端@RequestMapping(value = "/login", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
            $.ajax({
                type:"POST",
                contentType:"application/x-www-form-urlencoded",
                url:"http://localhost:8080/user/login",
                data:{
                    "telphone":telphone,
                    "password":password
                },
                //允许跨域请求
                xhrFields:{withCredentials:true},
                success:function (data) {
                    if (data.status=="success") {
                        alert("登录成功");
                    }else {
                        alert("登录失败，原因为" + data.data.errMsg);
                    }
                },
                error:function (data) {
                    alert("登录失败，原因为"+data.responseText);
                }
            });
            return false;
        });
    });

10 优化校验规则
1.查询maven仓库中是否由可用类库

<!--校验-->
<dependency>
  <groupId>org.hibernate</groupId>
  <artifactId>hibernate-validator</artifactId>
  <version>5.2.4.Final</version>
</dependency>

2.对validator进行一个简单的封装

新建validator的目录

新建一个ValidationResult的类

public class ValidationResult {
    //校验结果是否有错
    private boolean hasErrors = false;

    //存放错误信息的map
    private Map<String, String> errorMsgMap = new HashMap<>();

    public boolean isHasErrors() {
        return hasErrors;
    }

    public void setHasErrors(boolean hasErrors) {
        this.hasErrors = hasErrors;
    }

    public Map<String, String> getErrorMsgMap() {
        return errorMsgMap;
    }

    public void setErrorMsgMap(Map<String, String> errorMsgMap) {
        this.errorMsgMap = errorMsgMap;
    }

    //实现通用的通过格式化字符串信息获取错误结果的msg方法
    public String getErrMsg() {
        return StringUtils.join(errorMsgMap.values().toArray(), ",");
    }
}

新建一个ValidatiorImpl的类

@Component
public class ValidatorImpl implements InitializingBean {

    private Validator validator;

    //实现校验方法并返回校验结果
    public ValidationResult validate(Object bean) {
        final ValidationResult result = new ValidationResult();
        Set<ConstraintViolation<Object>> constraintViolationSet = validator.validate(bean);
        if (constraintViolationSet.size() > 0) {
            //有错误
            result.setHasErrors(true);
            constraintViolationSet.forEach(constraintViolation ->{
                String errMsg = constraintViolation.getMessage();
                String propertyName = constraintViolation.getPropertyPath().toString();
                result.getErrorMsgMap().put(propertyName, errMsg);
            });
        }
        return result;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        //将hibernate validator通过工厂的初始化方式使其实例化
        this.validator = Validation.buildDefaultValidatorFactory().getValidator();
    }
}

3.修改UserModel，基于注解的校验方式

@NotBlank(message = "用户名不能为空")
private String name;

@NotNull(message = "性别不能填写")
private Byte gender;

@NotNull(message = "年龄不能不填写")
@Min(value = 0, message = "年龄必须大于0岁")
@Max(value = 150, message = "年龄必须小于150岁")
private Integer age;

@NotBlank(message = "手机号不能为空")
private String telphone;
private String regisitMode;
private Integer thirdPartyId;

@NotBlank(message = "密码不能为空")
private String encrptPassword;

4.在UserServiceImpl中使用validator

引入bean

Autowired
private ValidatorImpl validator;

        //校验
//        if (userModel == null) {
//            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);
//        }
//        if (StringUtils.isEmpty(userModel.getName())
//                || userModel.getGender() == null
//                || userModel.getAge() == null
//                || StringUtils.isEmpty(userModel.getTelphone())) {
//            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);
//        }

        ValidationResult result = validator.validate(userModel);
        if (result.isHasErrors()) {
            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, result.getErrMsg());
        }

以后做校验时只需要在model的属性上做注解即可