1 查询所有课程接口
2 查询单个课程接口
-继续再查询所有接口上写
-再写一个视图类，单独写查询课程详情接口
4 写课程章节接口，每个章节下有很多课程
Linux从入门到精通
第一章节：入门
1 安装环境
2 配置环境
3 放弃
第二章节：入土
1 哇肯恶搞
2 挖坑
Python从入门到精通
第一章节：入门
1 安装环境
2 配置环境
3 放弃
第二章节：入土
1 哇肯恶搞
2 挖坑
课程详情接口
class CourseView(GenericViewSet, ListModelMixin,RetrieveModelMixin):
queryset = Course.objects.filter(is_delete=False, is_show=True).order_by('-orders')
serializer_class =CourseSerializer
filter_backends = [OrderingFilter,DjangoFilterBackend]
ordering_fields = ['id', 'price', 'students']
filter_fields = ['course_category']
pagination_class =BasicPagination
课程章节接口(views.py)
class ChapterViewSet(GenericViewSet,ListModelMixin):
queryset = CourseChapter.objects.filter(is_show=True,is_delete=False).order_by('orders')
serializer_class = CourseChapterSerializer
# 加上过滤功能，按课程的id号来过滤
filter_backends = [DjangoFilterBackend]
filter_fields = ['course']
序列化类
## 课时序列化类
class CourseSectionSerializer(serializers.ModelSerializer):
class Meta:
model = CourseSection
fields='__all__'
# 课程章节序列化类
class CourseChapterSerializer(serializers.ModelSerializer):
# 子序列化,课时是多条，一定要写many=True
coursesections=CourseSectionSerializer(many=True)
class Meta:
model = CourseChapter
fields=['course','chapter','name','summary','pub_date','coursesections']
路由
router.register('chapters',ChapterViewSet,'ChapterViewSet')
2 课程详情前台
# 取路径中的值
mounted() {
//http://localhost:8080/course/detail/79?name=lqz&age=18
console.log(this.$route.params) //打印出{pk：79}
console.log(this.$route.query)//打印出{name：lqz,age:18}
},
3 七牛云对象存储托管视频
1 视频文件，图片文件之前保存在自己服务器
2 搭建自己的存储服务器（fastdfs，go-fastdfs）
-https://sjqzhang.github.io/go-fastdfs/usage.html#python
-docekr 拉起一个来 http://10.1.5.9:8080/group1/upload
import requests
url = 'http://10.1.5.9:8080/group1/upload'
files = {'file': open('report.xls', 'rb')}
options={'output':'json','path':'','scene':''} #参阅浏览器上传的选项
r = requests.post(url,data=options, files=files)
print(r.text)
3 第三方云存储（阿里云oss，七牛云存储。。。。）
七牛云托管视频（go语言的践行者）
# from qiniu import Auth, put_file, etag
# import qiniu.config
# #需要填写你的 Access Key 和 Secret Key
# access_key = '-BoMxfk8dxgDq87mA-qLkgmI_AHYfF27tOFan_NJ'
# secret_key = 'Wijh6Fg6gedtBqoqKElkxrrlySoiVWbFSfQ6I-qM'
# #构建鉴权对象
# q = Auth(access_key, secret_key)
# #要上传的空间
# bucket_name = 'lqz'
# #上传后保存的文件名
# key = 'lqz.mp4'
# #生成上传 Token，可以指定过期时间等
# token = q.upload_token(bucket_name, key, 3600)
# #要上传文件的本地路径
# localfile = './6-测试功能.mp4'
# ret, info = put_file(token, key, localfile)
# print(info)
# assert ret['key'] == key
# assert ret['hash'] == etag(localfile)
# 删除视频
# from qiniu import Auth
# from qiniu import BucketManager
# access_key = '-BoMxfk8dxgDq87mA-qLkgmI_AHYfF27tOFan_NJ'
# secret_key = 'Wijh6Fg6gedtBqoqKElkxrrlySoiVWbFSfQ6I-qM'
# #初始化Auth状态
# q = Auth(access_key, secret_key)
# #初始化BucketManager
# bucket = BucketManager(q)
# #你要测试的空间， 并且这个key在你空间中存在
# bucket_name = 'lqz'
# key = 'lqz.mp4'
# #删除bucket_name 中的文件 key
# ret, info = bucket.delete(bucket_name, key)
# print(info)
# import requests
#
#
# res=requests.get('https://vd3.bdstatic.com/mda-kkena9xzt4hmb7b7/sc/cae_h264_clips/1605430730/mda-kkena9xzt4hmb7b7.mp4?auth_key=1610529585-0-0-14a58ce4cca097b0a5c823cc506d95da&bcevod_channel=searchbox_feed&pd=1&pt=3&abtest=8656_1')
# with open('致命诱惑.mp4','wb') as f:
# for line in res.iter_content():
# f.write(line)
'''
通过该程序下载的视频和音频是分成连个文件的，没有合成，
视频为：视频名_video.mp4
音频为：视频名_audio.mp4
修改url的值，换成自己想下载的页面节课
'''
# 导入requests模块，模拟发送请求
import requests
# 导入json
import json
# 导入re
import re
# 定义请求头
headers = {
'Accept': '*/*',
'Accept-Language': 'en-US,en;q=0.5',
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36'
}
# 正则表达式，根据条件匹配出值
def my_match(text, pattern):
match = re.search(pattern, text)
print(match.group(1))
print()
return json.loads(match.group(1))
def download_video(old_video_url, video_url, audio_url, video_name):
headers.update({"Referer": old_video_url})
print("开始下载视频：%s" % video_name)
video_content = requests.get(video_url, headers=headers)
print('%s视频大小：' % video_name, video_content.headers['content-length'])
audio_content = requests.get(audio_url, headers=headers)
print('%s音频大小：' % video_name, audio_content.headers['content-length'])
# 下载视频开始
received_video = 0
with open('%s_video.mp4' % video_name, 'ab') as