昨日内容回顾

# 昨日回顾

```python
# 1 多方式登录接口，路由配置
# 2 前端登录，判断了用户名密码是否填写，弹窗
# 3 vue操作cookie
	-this.$cookie.set(key,value,过期时间)
    -this.$cookie.get(key)
    -this.$cookie.remove(key)
# 4 子传父
//给父组件，Head传递一个事件，让它从cookie中取出token和username
 this.$emit('loginsuccess')
 //在父组件中写<Login @loginsuccess="login_success"/>
# 5 腾讯短信接入
	-API：接口，不同语言都可以操作
    -SDK：需要有不同语言的sdk
    
    -封装成了工具包
# 6 发送短信验证码接口
	
# 7 校验手机号
```



# 今日内容

## 1 短信接口频率限制

```python
# throttlings.py
from rest_framework.throttling import SimpleRateThrottle
class SMSThrotting(SimpleRateThrottle):
    scope = 'sms'
    def get_cache_key(self, request, view):
        telephone = request.query_params.get('telephone')
        #'throttle_%(scope)s_%(ident)s'%{}
        return self.cache_format%{'scope':self.scope,'ident':telephone}
    
# 配置在视图类上
from .throttlings import SMSThrotting
class SendSmSView(ViewSet):
    throttle_classes = [SMSThrotting,]
    
# 早setting中配置
REST_FRAMEWORK = {
    'DEFAULT_THROTTLE_RATES':{
        'sms':'1/m'  # key要跟类中的scop对应
    }
}
```



## 2 验证码登陆接口

```python
# views.py
@action(methods=['POST'],detail=False)
def code_login(self,request,*args,**kwargs):
    ser = serializer.CodeUserSerilaizer(data=request.data)
    if ser.is_valid():
        token = ser.context['token']
        username = ser.context['user'].username
        return APIResponse(token=token, username=username)
    else:
        return APIResponse(code=0,msg=ser.errors)
    
# serializer
class CodeUserSerilaizer(serializers.ModelSerializer):
    code=serializers.CharField()
    class Meta:
        model = models.User
        fields = ['telephone', 'code']

    def validate(self, attrs):
        user=self._get_user(attrs)
        # 用户存在，签发token
        token = self._get_token(user)
        self.context['token'] = token
        self.context['user'] = user
        return attrs


    def _get_user(self, attrs):
        from django.core.cache import cache
        from django.conf import settings
        import re
        telephone = attrs.get('telephone')
        code = attrs.get('code')

        # 取出原来的code
        cache_code=cache.get(settings.PHONE_CACHE_KEY%telephone)
        if code ==cache_code:
            # 验证码通过
            if re.match('^1[3-9][0-9]{9}$', telephone):
                user = models.User.objects.filter(telephone=telephone).first()
                if user:
                    # 把使用过的验证码删除
                    cache.set(settings.PHONE_CACHE_KEY % telephone,'')
                    return user
                else:
                    raise ValidationError('用户不存在')
            else:
                raise ValidationError('手机号不合法')
        else:
            raise ValidationError('验证码错误')


    def _get_token(self, user):
        from rest_framework_jwt.serializers import jwt_payload_handler, jwt_encode_handler
        payload = jwt_payload_handler(user)  # 通过user对象获得payload
        token = jwt_encode_handler(payload)  # 通过payload获得token
        return token

```



## 3 前台发送验证码

```python
<template>
    <div class="login">
        <div class="box">
            <i class="el-icon-close" @click="close_login"></i>
            <div class="content">
                <div class="nav">
                    <span :class="{active: login_method === 'is_pwd'}"
                          @click="change_login_method('is_pwd')">密码登录</span>
                    <span :class="{active: login_method === 'is_sms'}"
                          @click="change_login_method('is_sms')">短信登录</span>
                </div>
                <el-form v-if="login_method === 'is_pwd'">
                    <el-input
                            placeholder="用户名/手机号/邮箱"
                            prefix-icon="el-icon-user"
                            v-model="username"
                            clearable>
                    </el-input>
                    <el-input
                            placeholder="密码"
                            prefix-icon="el-icon-key"
                            v-model="password"
                            clearable
                            show-password>
                    </el-input>
                    <el-button type="primary" @click="login_password">登录</el-button>
                </el-form>
                <el-form v-if="login_method === 'is_sms'">
                    <el-input
                            placeholder="手机号"
                            prefix-icon="el-icon-phone-outline"
                            v-model="mobile"
                            clearable
                            @blur="check_mobile">
                    </el-input>
                    <el-input
                            placeholder="验证码"
                            prefix-icon="el-icon-chat-line-round"
                            v-model="sms"
                            clearable>
                        <template slot="append">
                            <span class="sms" @click="send_sms">{{ sms_interval }}</span>
                        </template>
                    </el-input>
                    <el-button type="primary" @click="code_login">登录</el-button>
                </el-form>
                <div class="foot">
                    <span @click="go_register">立即注册</span>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
    export default {
        name: "Login",
        data() {
            return {
                username: '',
                password: '',
                mobile: '',
                sms: '',
                login_method: 'is_pwd',
                sms_interval: '获取验证码',
                is_send: false,
            }
        },
        methods: {
            close_login() {
                this.$emit('close')
            },
            go_register() {
                this.$emit('go')
            },
            change_login_method(method) {
                this.login_method = method;
            },
            check_mobile() {
                if (!this.mobile) return;
                //字符串.match(/正则表达式/)
                if (!this.mobile.match(/^1[3-9][0-9]{9}$/)) {
                    this.$message({
                        message: '手机号有误',
                        type: 'warning',
                        duration: 1000,
                        onClose: () => {
                            this.mobile = '';
                        }
                    });
                    return false;
                }
                //发送axios请求
                // this.$axios.get(this.$settings.base_url+'/user/check_telephone/telephone='+this.mobile})
                this.$axios.get(this.$settings.base_url + '/user/check_telephone/', {params: {telephone: this.mobile}}).then(response => {
                    if (response.data.code) {
                        //手机号存在，允许发送验证码
                        this.is_send = true;
                    } else {
                        this.$message({
                            message: '手机号不存在',
                            type: 'warning',
                            duration: 1000,
                            onClose: () => {
                                this.mobile = '';
                            }
                        });
                    }
                }).catch(error => {
                    console.log(error)
                })

            },
            send_sms() {

                if (!this.is_send) return;
                this.is_send = false;
                let sms_interval_time = 60;
                this.sms_interval = "发送中...";

                this.$axios.get(this.$settings.base_url + '/user/send/', {params: {'telephone': this.mobile}})
                    .then(response => {
                        if (response.data.code) {
                            this.$message({
                                message: '发送验证码成功',
                                type: 'success',
                                duration: 1000,

                            });
                        }
                    })


                // setInterval(()=>{},100)
                //定时器：每隔一秒种，把数字减一，当减到小于1，按钮又能点了，显示获取验证码
                let timer = setInterval(() => {
                    if (sms_interval_time <= 1) {
                        clearInterval(timer);  //如果小于等于1，把定时器清除
                        this.sms_interval = "获取验证码";
                        this.is_send = true; // 重新回复点击发送功能的条件
                    } else {
                        sms_interval_time -= 1;
                        this.sms_interval = `${sms_interval_time}秒后再发`;
                    }
                }, 1000);
            },

            login_password() {
                if (this.username && this.password) {
                    //发送请求
                    this.$axios.post(this.$settings.base_url + '/user/login/', {
                        username: this.username,
                        password: this.password


                    }).then(response => {
                        console.log(response.data)
                        //把用户信息保存到cookie中
                        // this.$cookies.set('key','value','过期时间,按s计')
                        this.$cookies.set('token', response.data.token, '7d')
                        this.$cookies.set('username', response.data.username, '7d')
                        //关闭登录窗口(子传父)
                        this.$emit('close')
                        //给父组件，Head传递一个事件，让它从cookie中取出token和username
                        this.$emit('loginsuccess')
                    }).catch(errors => {
                    })
                } else {
                    this.$message({
                        message: '用户名或密码必须填哦',
                        type: 'warning',

                    });
                }
            },
            code_login() {

                if (this.mobile && this.sms) {
                    //发送请求
                    this.$axios.post(this.$settings.base_url + '/user/code_login/', {
                        telephone: this.mobile,
                        code: this.sms

                    }).then(response => {
                        console.log(response.data)
                        //把用户信息保存到cookie中
                        // this.$cookies.set('key','value','过期时间,按s计')
                        this.$cookies.set('token', response.data.token, '7d')
                        this.$cookies.set('username', response.data.username, '7d')
                        //关闭登录窗口(子传父)
                        this.$emit('close')
                        //给父组件，Head传递一个事件，让它从cookie中取出token和username
                        this.$emit('loginsuccess')
                    }).catch(errors => {
                    })
                } else {
                    this.$message({
                        message: '手机号或验证码必填',
                        type: 'warning',

                    });
                }

            },
        }
    }
</script>

<style scoped>
    .login {
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 10;
        background-color: rgba(0, 0, 0, 0.3);
    }

    .box {
        width: 400px;
        height: 420px;
        background-color: white;
        border-radius: 10px;
        position: relative;
        top: calc(50vh - 210px);
        left: calc(50vw - 200px);
    }

    .el-icon-close {
        position: absolute;
        font-weight: bold;
        font-size: 20px;
        top: 10px;
        right: 10px;
        cursor: pointer;
    }

    .el-icon-close:hover {
        color: darkred;
    }

    .content {
        position: absolute;
        top: 40px;
        width: 280px;
        left: 60px;
    }

    .nav {
        font-size: 20px;
        height: 38px;
        border-bottom: 2px solid darkgrey;
    }

    .nav > span {
        margin: 0 20px 0 35px;
        color: darkgrey;
        user-select: none;
        cursor: pointer;
        padding-bottom: 10px;
        border-bottom: 2px solid darkgrey;
    }

    .nav > span.active {
        color: black;
        border-bottom: 3px solid black;
        padding-bottom: 9px;
    }

    .el-input, .el-button {
        margin-top: 40px;
    }

    .el-button {
        width: 100%;
        font-size: 18px;
    }

    .foot > span {
        float: right;
        margin-top: 20px;
        color: orange;
        cursor: pointer;
    }

    .sms {
        color: orange;
        cursor: pointer;
        display: inline-block;
        width: 70px;
        text-align: center;
        user-select: none;
    }
</style>
```



## 4 前台验证码登陆

```python
#详细代码看第三条，前台发送验证码
```



## 5 后台注册接口

```python
# urls.py
router.register('register', views.RegisterView, 'register')  # /user/register   post请求就是新增

# views.py
class RegisterView(GenericViewSet,CreateModelMixin):
    queryset = models.User.objects.all()
    serializer_class = serializer.UserRegisterSerilaizer
    def create(self, request, *args, **kwargs):
        response=super().create(request, *args, **kwargs)
        username=response.data.get('username')
        return APIResponse(code=1,msg='注册成功',username=username)
    
# serializer.py
class UserRegisterSerilaizer(serializers.ModelSerializer):
    code=serializers.CharField(max_length=4,min_length=4,write_only=True)
    class Meta:
        model = models.User
        fields = ['telephone', 'code','password','username']
        extra_kwargs = {
            'password': {'max_length': 18,'min_length':8},
            'username': {'read_only':True}
        }



    def validate(self, attrs):
        telephone = attrs.get('telephone')
        code = attrs.get('code')
        # 取出原来的code
        cache_code = cache.get(settings.PHONE_CACHE_KEY % telephone)
        if code == cache_code:
            # 验证码通过
            if re.match('^1[3-9][0-9]{9}$', telephone):
                attrs['username']=telephone  # 把用户的名字设成手机号
                attrs.pop('code')
                return attrs
            else:
                raise ValidationError('手机号不合法')
        else:
            raise ValidationError('验证码错误')


    # 重写create方法
    def create(self, validated_data):
        user=models.User.objects.create_user(**validated_data)
        return user
```



## 6 前台注册功能

```python
# Register.vue
<template>
    <div class="register">
        <div class="box">
            <i class="el-icon-close" @click="close_register"></i>
            <div class="content">
                <div class="nav">
                    <span class="active">新用户注册</span>
                </div>
                <el-form>
                    <el-input
                            placeholder="手机号"
                            prefix-icon="el-icon-phone-outline"
                            v-model="mobile"
                            clearable
                            @blur="check_mobile">
                    </el-input>
                    <el-input
                            placeholder="密码"
                            prefix-icon="el-icon-key"
                            v-model="password"
                            clearable
                            show-password>
                    </el-input>
                    <el-input
                            placeholder="验证码"
                            prefix-icon="el-icon-chat-line-round"
                            v-model="sms"
                            clearable>
                        <template slot="append">
                            <span class="sms" @click="send_sms">{{ sms_interval }}</span>
                        </template>
                    </el-input>
                    <el-button type="primary" @click="register">注册</el-button>
                </el-form>
                <div class="foot">
                    <span @click="go_login">立即登录</span>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
    export default {
        name: "Register",
        data() {
            return {
                mobile: '',
                password: '',
                sms: '',
                sms_interval: '获取验证码',
                is_send: false,
            }
        },
        methods: {
            close_register() {
                this.$emit('close', false)
            },
            go_login() {
                this.$emit('go')
            },
            check_mobile() {
                if (!this.mobile) return;
                //字符串.match(/正则表达式/)
                if (!this.mobile.match(/^1[3-9][0-9]{9}$/)) {
                    this.$message({
                        message: '手机号有误',
                        type: 'warning',
                        duration: 1000,
                        onClose: () => {
                            this.mobile = '';
                        }
                    });
                    return false;
                }
                this.$axios.get(this.$settings.base_url + '/user/check_telephone/', {params: {telephone: this.mobile}}).then(response => {
                    if (response.data.code) {
                        this.$message({
                            message: '您已经注册过了，快去登录把',
                            type: 'warning',
                            duration: 1000,
                            onClose: () => {
                                this.go_login()
                            }
                        });

                    } else {
                        this.is_send = true;
                        this.$message({
                            message: '该用户没有注册过，欢迎注册我们的平台',
                            type: 'success',
                            duration: 1000,
                        });
                    }
                }).catch(error => {
                    console.log(error)
                })

            },
            send_sms() {

                if (!this.is_send) return;
                this.is_send = false;
                let sms_interval_time = 60;
                this.sms_interval = "发送中...";

                this.$axios.get(this.$settings.base_url + '/user/send/', {params: {'telephone': this.mobile}})
                    .then(response => {
                        if (response.data.code) {
                            this.$message({
                                message: '发送验证码成功',
                                type: 'success',
                                duration: 1000,

                            });
                        }
                    })


                // setInterval(()=>{},100)
                //定时器：每隔一秒种，把数字减一，当减到小于1，按钮又能点了，显示获取验证码
                let timer = setInterval(() => {
                    if (sms_interval_time <= 1) {
                        clearInterval(timer);  //如果小于等于1，把定时器清除
                        this.sms_interval = "获取验证码";
                        this.is_send = true; // 重新回复点击发送功能的条件
                    } else {
                        sms_interval_time -= 1;
                        this.sms_interval = `${sms_interval_time}秒后再发`;
                    }
                }, 1000);
            },
            register() {
                if (this.mobile && this.sms && this.password) {
                    this.$axios.post(this.$settings.base_url + '/user/register/', {
                        telephone: this.mobile,
                        code: this.sms,
                        password: this.password
                    }).then(response => {
                        if (response.data.code) {
                            //注册成功，来个提示，跳转到登录
                            this.$message({
                                message: '注册成功',
                                type: 'success',
                                duration: 1000,
                                onClose: () => {
                                    this.go_login()
                                }
                            });
                        } else {
                            this.$message({
                                message: '未知错误',
                                type: 'error',
                                duration: 1000,
                                onClose: () => {
                                    this.mobile = ''
                                    this.sms = ''
                                    this.password = ''
                                }
                            });
                        }
                    })
                } else {
                    this.$message({
                        message: '你有没填的信息',
                        type: 'error',
                        duration: 1000,
                    });
                }
            },
        }
    }
</script>

<style scoped>
    .register {
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 10;
        background-color: rgba(0, 0, 0, 0.3);
    }

    .box {
        width: 400px;
        height: 480px;
        background-color: white;
        border-radius: 10px;
        position: relative;
        top: calc(50vh - 240px);
        left: calc(50vw - 200px);
    }

    .el-icon-close {
        position: absolute;
        font-weight: bold;
        font-size: 20px;
        top: 10px;
        right: 10px;
        cursor: pointer;
    }

    .el-icon-close:hover {
        color: darkred;
    }

    .content {
        position: absolute;
        top: 40px;
        width: 280px;
        left: 60px;
    }

    .nav {
        font-size: 20px;
        height: 38px;
        border-bottom: 2px solid darkgrey;
    }

    .nav > span {
        margin-left: 90px;
        color: darkgrey;
        user-select: none;
        cursor: pointer;
        padding-bottom: 10px;
        border-bottom: 2px solid darkgrey;
    }

    .nav > span.active {
        color: black;
        border-bottom: 3px solid black;
        padding-bottom: 9px;
    }

    .el-input, .el-button {
        margin-top: 40px;
    }

    .el-button {
        width: 100%;
        font-size: 18px;
    }

    .foot > span {
        float: right;
        margin-top: 20px;
        color: orange;
        cursor: pointer;
    }

    .sms {
        color: orange;
        cursor: pointer;
        display: inline-block;
        width: 70px;
        text-align: center;
        user-select: none;
    }
</style>
```



## 7 redis

```python
#1 key-value的存储方式，value有很多数据类型：5大：string(字符串)、list(链表)、set(集合)、zset(sorted set --有序集合)和hash（哈希类型
#2 内存数据库
#3 与Memcached比较：
	-1 Memcached只支持一种数据类型字符串
    -2 Memcached不支持持久化（不支持存到硬盘上，只要一断电，数据就没了）
    
# 4 使用Redis有哪些好处？
(1) 速度快，因为数据存在内存中，类似于HashMap，HashMap的优势就是查找和操作的时间复杂度都是O(1)
(2) 支持丰富数据类型，支持string，list，set，sorted set，hash
(3) 支持事务，操作都是原子性，所谓的原子性就是对数据的更改要么全部执行，要么全部不执行
(4) 丰富的特性：可用于缓存，消息，按key设置过期时间，过期后将会自动删除
# 5 单线程，单进程，不存在并发访问的问题（新版本已经不是了）
	-单线程为什么这么快
    	-数据在内存（最重要的）
        -io多路复用技术
        -因为没有进程，线程间的切换
# 6 redis适合的场景
	1 排行榜
    2 网站访问量，文章访问量
    3 缓存数据库（用的最多，就是做缓存）
    4 发布订阅
    5 去重
    6 分布式（blpop）
    
# 7 安装
	-Redis-x64-3.2.100.msi  安装包
    -redis-desktop-manager-0.9.3.817.exe 等同于navicate
    
    
# 8 使用
	-服务端和客户端
	-安装完，服务端自动启动：redis-server 配置文件.conf
	-redis-cli  ：客户端连接服务端(redis-cli -h 127.0.0.1 -p 6379)
```









# 补充

## 1 接口幂等性

# 作业

## 1 写完接口频率限制

## 2 写完验证码登录接口，注册接口

## 3 写完前台登录注册

## 4 安装redis

## 5 预习redis的使用（选做）

1 短信接口频率限制

# throttlings.py
from rest_framework.throttling import SimpleRateThrottle
class SMSThrotting(SimpleRateThrottle):
    scope = 'sms'
    def get_cache_key(self, request, view):
        telephone = request.query_params.get('telephone')
        #'throttle_%(scope)s_%(ident)s'%{}
        return self.cache_format%{'scope':self.scope,'ident':telephone}
    
# 配置在视图类上
from .throttlings import SMSThrotting
class SendSmSView(ViewSet):
    throttle_classes = [SMSThrotting,]
    
# 早setting中配置
REST_FRAMEWORK = {
    'DEFAULT_THROTTLE_RATES':{
        'sms':'1/m'  # key要跟类中的scop对应
    }
}

2 验证码登陆接口