tornado之日记本——
1、diary.py：
import time
from model.database import DataBase
from tornado import web, httpserver, ioloop
def getDiaryInfo(self):
t = self.get_argument('time',time.strftime('%Y-%m-%d %X', time.localtime()))
weather = self.get_argument('weather')
mood = self.get_argument('mood')
content = self.get_argument('content')
return dict(time=t, weather=weather, mood=mood, content=content)
class IndexHandler(web.RequestHandler):
def get(self, *args, **kwargs):
search=self.get_argument('search','') #初始搜索词为空，列出所有日记
diaries=DataBase().getDiaries(search)
self.render('index之日记本.html',diaries=diaries)
class CreateDiaryHandler(web.RequestHandler):
def get(self, *args, **kwargs):
self.render('createDiary.html')
def post(self, *args, **kwargs):
item=getDiaryInfo(self)
DataBase().createDiary(item)
self.redirect('/')
class UpdateDiaryHandler(web.RequestHandler):
def get(self, *args, **kwargs):
diary=DataBase().getDiaryByID(self.get_argument('id'))
self.render('updateDiary.html',diary=diary)
def post(self, *args, **kwargs):
item=getDiaryInfo(self) #id是get的参数，其他来自post请求
item.update({'id':self.get_argument('id')})
DataBase().updateDiary(item)
self.redirect('/')
class DeleteDiaryHandler(web.RequestHandler):
def get(self, *args, **kwargs):
id=self.get_argument('id')
self.write(f'''＜form method="post">
＜input type="submit" value="确认删除日记{id}" name="deleteDiary">
＜input type="submit" value="取消删除{id}" name="deleteDiary">＜/form>''')
def post(self, *args, **kwargs):
if '确认' in self.get_argument('deleteDiary'):
DataBase().deleteDiary(self.get_argument('id'))
self.redirect('/')
class InfoDiaryHandler(web.RequestHandler):
def get(self, *args, **kwargs):
diary=DataBase().getDiaryByID(self.get_argument('id'))
self.render('infoDiary.html',diary=diary)
app = web.Application([
(r'/', IndexHandler),
(r'/createDiary', CreateDiaryHandler),
(r'/updateDiary', UpdateDiaryHandler),
(r'/deleteDiary', DeleteDiaryHandler),
(r'/infoDiary', InfoDiaryHandler),
],**{'template_path':'templates','static_path':'static'})
if __name__ == '__main__':
httpServer = httpserver.HTTPServer(app)
httpServer.listen(8080)
print('http://127.0.0.1:8080')
ioloop.IOLoop.current().start()
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2、model文件夹中的database.py：
import pymysql
class DataBase:
def __init__(self):
self.conn=pymysql.connect(host='localhost',port=3306,user='chengy',password='',
db='tornado之日记本',charset='utf8mb4')
self.cur=self.conn.cursor(pymysql.cursors.DictCursor)
def operateDatabase(self,sql,insertValues=None):
self.cur.execute(sql,insertValues)
self.conn.commit()
self.cur.close()
self.conn.close()
def createDiary(self,item):
sql='insert into diaries(time,weather,mood,content) values(%s,%s,%s,%s)'
insertValues=(item['time'],item['weather'],item['mood'],item['content'])
self.operateDatabase(sql,insertValues)
def updateDiary(self,item):
sql=f'''update diaries set time="{item['time']}",weather="{item['weather']}",
mood="{item['mood']}",content="{item['content']}" where id={item['id']}'''
self.operateDatabase(sql)
def deleteDiary(self,id=''):
sql=f'delete from diaries where id={id}'
self.operateDatabase(sql)
def getDiaries(self,search=''):
sql=f'select * from diaries where content like "%{search}%" \
or weather like "%{search}%" or mood like "%{search}%" limit 25'
self.operateDatabase(sql)
return self.cur.fetchall()
def getDiaryByID(self,id=''):
sql=f'select * from diaries where id={id}'
self.operateDatabase(sql)
return self.cur.fetchone()
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3、templates文件夹
index之日记本.html：
＜h2>日行一事＜/h2>
＜div>＜a href="/createDiary">新建日记＜/a>＜br>＜/div>
＜form action="" method="get">
搜索日记：＜input type="text" name="search">
＜input type="submit" value="搜索">
＜/form>
＜br>＜br>
{% if diaries %}
＜table cellspacing="0" cellpadding="0" border="9">
＜tr>＜th>修改＜/th>＜th>删除＜/th>＜th>id＜/th>＜th>时间＜/th>
＜th>天气＜/th>＜th>心情＜/th>＜th>内容＜/th>＜/tr>
{% for diary in diaries %}
＜tr>＜td>＜a href="/updateDiary?id={{diary['id']}}">修改＜/a>＜/td>
＜td>＜a href="/deleteDiary?id={{diary['id']}}">删除＜/a>＜/td>
＜td>{{diary['id']}}＜/td>＜td>{{diary['time']}}＜/td>＜td>{{diary['weather']}}＜/td>
＜td>{{diary['mood']}}＜/td>
＜td>＜a href="/infoDiary?id={{diary['id']}}">{{diary['content'][:20]}}＜/a>＜/td>
＜/tr> ＜!--显示前9个字符，tornado用[:9]，django用|truncatechars:'9'-->
{% end %}
＜/table>
{% end %}
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createDiary.html：
＜h2>新建日记＜/h2>
＜form action="" method="post">
天气：＜input type="text" name="weather">＜br>
心情：＜input type="text" name="mood">＜br>
内容：＜textarea rows="10" cols="30" name="content">＜/textarea>＜br>
＜input type="submit" value="保存">
＜/form>
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updateDiary.html：
＜h2>更新日记＜/h2>
{% if diary %}
＜form action="" method="post">
时间：＜input type="text" name="time" value="{{diary['time']}}">＜br>
天气：＜input type="text" name="weather" value="{{diary['weather']}}">＜br>
心情：＜input type="text" name="mood" value="{{diary['mood']}}">＜br>
内容：＜textarea rows="10" cols="30" name="content">{{diary['content']}}＜/textarea>＜br>
＜input type="submit" value="更新"> ＜!--textarea无value属性，直接写在标签之间-->
＜/form>
{% end %}
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infoDiary.html：
＜h2 style="color: red;">日记详情＜/h2>
＜h3>＜a href="/">返回首页＜/a>＜br>＜br>＜/h3>
{% if diary %}
标识：{{diary['id']}}＜br>
时间：{{diary['time']}}＜br>
天气：{{diary['weather']}}＜br>
心情：{{diary['mood']}}＜br>＜br>
＜!--把字符当html解析：对它用raw语法，或在head中加句{% autoescape None %}-->
{%raw diary['content'].replace('\r\n','＜br>').replace(' ','＆nbsp;')%}
{% end %} ＜!--使用时，各篇html代码替换回半角的&及左尖角符-->
