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当当网图书项目
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一、準(zhǔn)備工作
file->new objects;新建文件夾static,js;新建app.py,mysql.py;新建模版文件base.html,展示文件index.html,數(shù)量文件show.html在Bootstrap這里下載js和css在echarts在柱狀圖
二、app.py
from flask
import Flask
,render_template
,request
from mysql
import mysql
import pandas
as pdapp
=Flask
(__name__
)
global rows
@app.route("/")
def index():global rowsdb
=mysql
()sql
="select * from books"rows
=db
.query
(sql
)return render_template
("index.html",rows
=rows
)
@app.route("/theshy")
def theshy():global rowsdf
=pd
.DataFrame
(rows
)print(df
)df2
=df
.groupby
("Press").count
()["BookId"].sort_values
(ascending
=False).head
()return render_template
("power.html",x
=list(df2
.index
),y
=list(df2
))
@app.template_filter("filter")
def filter(tt
):if len(tt
)>15:return tt
[:15]+"..."else:return tt
if __name__
== '__main__':app
.run
(debug
=True,port
=1234)三、mysql
.py
```python
import pymysql
class mysql():def __init__(self
,db
="test"):self
.conn
=pymysql
.connect
(host
="127.0.0.1",db
=db
,user
="root",password
="123456")self
.cursor
=self
.conn
.cursor
(pymysql
.cursors
.DictCursor
)def query(self
,sql
,args
=None):self
.cursor
.execute
(sql
,args
=args
)return self
.cursor
.fetchall
()def update(self
,sql
,args
=None):num
=self
.cursor
.execute
(sql
,args
=args
)self
.conn
.commit
()if num
:return Trueelse:return Falsedef close(self
):self
.conn
.close
()四、base
.html
```html
<!DOCTYPE html
>
<html lang
="en">
<head
><meta charset
="UTF-8"><title
>Title
</title
><link rel
="stylesheet" href
="static/css/bootstrap.css">{% block style
%}{% endblock
%}
</head
>
<body
>
<h2 align
="center">當(dāng)當(dāng)網(wǎng)書籍信息
</h2
>
<p
><a href
="/theshy"><span
class="glyphicon glyphicon-indent-left">前五條數(shù)據(jù)
</span
></a
>|<a href
="/"><span
class="glyphicon glyphicon-th-list">書籍詳細(xì)信息
</span
></a
><hr
/>
</p
>
{% block content
%}{% endblock
%}
{% block scripts
%}{% endblock
%}
</body
>
</html
>
五、index.html
{% extends "base.html" %}
{% block content %}
<table class="table table-striped"><tr><th>編號(hào)
</th><th>書名
</th><th>價(jià)格
</th><th>作者
</th><th>出版社
</th><th>出版日期
</th><th>評(píng)論數(shù)
</th></tr>
{% for row in rows %}
<tr><td>{{ row["BookId"] }}
</td><td>{{ row["Title"]|filter }}
</td><td>{{ row["Price"] }}
</td><td>{{ row["Author"] |filter}}
</td><td>{{ row["Press"] }}
</td><td>{{ row["PubTime"] }}
</td><td>{{ row["Comments"] }}
</td></tr>
{% endfor %}
</table>
{% endblock %}
六、show.html
{% extends "base.html" %}
{% block content %}
<div id="box" style="width: 800px;height: 900px;margin: 0 auto"></div>
<script src="static/js/echarts.min.js"></script><script>myecharts=echarts.init(document.getElementById("box"))option = {title : {text: '當(dāng)當(dāng)網(wǎng)圖書出版社統(tǒng)計(jì)',},tooltip : {trigger: 'axis'},legend: {data:['圖書出版社']},toolbox: {show : true,feature : {mark : {show: true},dataView : {show: true, readOnly: false},magicType : {show: true, type: ['line', 'bar']},restore : {show: true},saveAsImage : {show: true}}},calculable : true,xAxis : [{type : 'category',data : {{ x|safe }}}],yAxis : [{type : 'value'}],series : [{name:'圖書出版社',type:'bar',data:{{ y|safe }}},]
};myecharts.setOption(option)</script>
{% endblock %}```
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