前言

pycharm+hbuilderx+navicat

一、前端 hbuilderx

<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
	#页面加载时呈现的数据
	window.onload = function(){
			$.ajax({
				url:"http://localhost:8899/allinfor",
				type:"post",
				dataType:"json",
	 
				//data为要传递给后端的数据，使用JSON.stringify()转换为json格式
				data:JSON.stringify({
						allinfor:$("#allinfor").val()
					}),
				success:function (data){
					#获取到后端返回的数据
					console.log(data)
					console.log(data.allinfor.length)
					
					#数据处理 
					var tr 
					for (var i=0;i<=data.allinfor.length;i++){
						for(var y=1;y<=13;y++){
							// console.log(data.allinfor[i][y])
							tr =tr + "<td>"+data.allinfor[i][y]+"</td>";
							
						}
						$(".tab3").append('<tr id="tab">'+tr+'</tr>');
						tr = ''
					}
	
				},
				error:function (){
					alert("失败")
					console.log("***********")
				}
			})
		}
</script>

二、后端 python

import json
from flask import *
from flask import Flask, request, jsonify, make_response
import pymysql

app = Flask('__name__')

@app.after_request
def cors(environ):
    environ.headers['Access-Control-Allow-Origin']='*'
    environ.headers['Access-Control-Allow-Method']='*'
    environ.headers['Access-Control-Allow-Headers']='x-requested-with,content-type'
    return environ

#获取数据库里的信息 传递到前端
@app.route('/allinfor',methods = ['POST'])
def allinfor():
	#获取前端发给的信息
	data =request.get_data()
    json_data = json.loads(data)
    print(json_data)
    a = list(dict.values(json_data))
		
    #数据库获取到信息
    conn = pymysql.Connection(host = 'localhost',user = 'root', password = '152800' ,port = 3306 ,database ='tw')
    cursor = conn.cursor()
    sql = "select * from tw_sql "
    cursor.execute(sql)
    conn.commit()
    a = cursor.fetchall()
	
	#处理后的信息返回给前端
	pp =[]
    info = dict()
    for i in a:
        i = list(i)
        pp.append(i)
    #字典的形式返回
    info['allinfor'] = pp

    return jsonify(info)



if __name__ == '__main__':
    app.run(port=8899)

三、数据库

要保证打开着 ！


数据库连接的代码 后端里面写过的

conn = pymysql.Connection(host = 'localhost',user = 'root', password = '152800' ,port = 3306 ,database ='tw')
cursor = conn.cursor()
sql = "select * from tw_sql "
cursor.execute(sql)
conn.commit()

总结

无