错误如下：
代码app.py如下
from flask import Flask,render_template,url_for
import json
import pymysql
from flask_sqlalchemy import SQLAlchemy
from wsgiref.simple_server import make_server
from gevent import pywsgi
app = Flask(__name__)
#--------------------------------------------------------------------------------------------------------------------
#关联数据库建表
app.config['SQLALCHEMY_DATABASE_URI']='mysql+pymysql://root:12345678@127.0.0.1:5000/qiche'
app.config['SQLALCHEMY_TRACK_MODIFCATIONS'] = False
db = SQLAlchemy(app)
@app.route('/template')
def hello_world():
return render_template('../template/index.html')
@app.route('/test',methods=['GET'])
#链接数据库
def my_test():
connection = pymysql.connect(host='localhost',user='root',passwd='12345678',db='qiche',port=3306,charset='utf8')
# 为qiche的数据开启一个游标cur
cur=connection.cursor()
#访问sqiche表中的所有数据
sql = 'SELECT * FROM test'
#执行sql中的语句，即获取student表中的所有数据
cur.execute(sql)
#将获取到的sql数据全部显示出来
see = cur.fetchall()
#定义需要用上的空数据数组，然后通过遍历数据库的数据将数据附上去
yxiaoliang = []
ypinpai = []
ychengjiaojia = []
xname = []
ynianfen = []
jsonData = {}
#遍历qiche表中的所有数据,see绑定了sql（也就是qiche表中的所有数据），所以需要在see中遍历
for data in see :
ypinpai.append(data[0])
xname.append(data[1])#data[1]是指qiche表中第二列()的数据
ynianfen.append(data[2])
yxiaoliang.append(data[3])#data[2]是指qiche表中第三列()的数据
ychengjiaojia.append(data[4])#data[3]是指qiche表中第四列()的数据
#将数据转化格式方便在HTML中调用
jsonData['yxiaoliang'] = yxiaoliang
jsonData['ypaipin'] = ypinpai
jsonData['ychengjiaojia'] = ychengjiaojia
jsonData['xname'] = xname
jsonData['ynianfen'] = ynianfen
j = json.dumps(jsonData)
cur.close()
connection.close()
return (j)
if name == '__main__':
#server = make_server('127.0.0.1', 5000, app)
#server = pywsgi.WSGIServer(('127.0.0.1', 5000), app)
#server.serve_forever()
app.run(debug=True)
index.html代码如下
```<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>汽车销售</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<!-- 引入 echarts.js -->
<script src="../static/jquery.min.js"></script>
<!-- 引入jquery.js -->
<script src="../static/echarts.min.js"></script>
</head>
<body>
<div id="main" style="width: 1800px;height: 900px;"></div>
<script type="text/javascript">
var myChart = echarts.init(document.getElementById('main'));
var app={
yxiaoliang : [],
ypinpai : [],
ychengjiaojia : [],
xname : [],
ynianfen : [],
};
$(document).ready(function () {
getData();
//console.log(app.legname1);
console.log(app.yxiaoliang);
console.log(app.ypinpai);
console.log(app.ychengjiaojia);
console.log(app.xname);
console.log(app.ynianfen);
});
function getData() {
$.ajax({
url:'/test',
data:{},
type:'POST',
async:false,
dataType:'json',
success:function (data) {
app.yxiaoliang = data.yxiaoliang;
app.ypinpai = data.ypinpai;
app.ychengjiaojia = data.ychengjiaojia;
app.xname = data.xname;
app.ynianfen = data.ynianfen;
myChart.setOption({
title:{
text:'各品牌销售情况'
},
tooltip:{},
legend:{
data:['销量','成交价',]
},
xAxis:{
data: app.xname
},
yAxis:{
type:'value'
},
series:[{
name:'销量',
type: 'bar',
data:app.yxiaoliang
},
{
name:'成交价',
type:'line',
data:app.ychengjiaojia
},
]
});
},
error:function (msg) {
console.log(msg);
alert('系统错误');
}
})
}
</script>
</body>
</html>
求大佬解决
