flask通用项目结构
代码语言：javascript复制| - projectName
| - app //程序包
| - templates //jinjia2模板
|- static //css,js 图片等静态文件
| - main //py程序包 ，可以有多个这种包，每个对应不同的功能
| - __init__.py
|- errors.py
|- forms.py
|- views.py
|- __init__.py
|- email.py //邮件处理程序
|- models.py //数据库模型
|- migrations //数据迁移文件夹
| - tests //单元测试
|- __init__.py
|- test*.py //单元测试程序，可以包含多个对应不同的功能点测试
|- venv //虚拟环境
|- requirements.txt //列出了所有依赖包以及版本号，方便在其他位置生成相同的虚拟环境以及依赖
|- config.py //全局配置文件，配置全局变量
|- manage.py //启动程序flask 简介
http://docs.jinkan.org/docs/flask/quickstart.html#a-minimal-application
主体代码逻辑
一个最简单的查询服务样例
代码语言：javascript复制#!/usr/bin/env python
# -*- encoding: utf-8 -*-
#-------------------------------------------------------------------------------
'''
@Author : {SEASON}
@License : (C) Copyright 2013-2022, {OLD_IT_WANG}
@Contact : {shiter@live.cn}
@Software: PyCharm
@File :
@Time : 2019/4/25 14:57
@Desc :
'''
#-------------------------------------------------------------------------------
import json
import random
import logging
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask import request,Response
from flask_cors import CORS
log_file_str = 'shuanghe_demo.log'
log_level = logging.INFO
app = Flask(__name__)
CORS(app)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql pymysql://username:password@ip:3306/database'
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
db = SQLAlchemy(app)
english_chinese_dict = {'id':'身份证号',
'name':'姓名',
'sex':'性别',
'age':'年龄',
}
class neihuang_underwriting_search_result(db.Model):
__tablename__ = 'neihuang_underwriting_search_result'
id = db.Column(db.String(32),primary_key=True)
name = db.Column(db.String(32))
sex = db.Column(db.String(32))
age = db.Column(db.String(32))
def __repr__(self):
return '<neihuang_underwriting_search_result %r>' % self.id
def convert_to_dict(obj):
'''把Object对象转换成Dict对象'''
result_dict = {}
result_dict.update(obj.__dict__)
result_dict.pop('_sa_instance_state', None)
result_dict = random_value_of_labels(result_dict)
return result_dict
def get_id_result(id):
result = neihuang_underwriting_search_result.query.filter_by(id=id).one()
result_dict = convert_to_dict(result)
# result_list = database_name_conversion(result_dict)
result_json = json.dumps(result_dict,ensure_ascii=False)
return result_json
@app.route('/api/search',methods=['POST','GET'])
def search():
#result_json = get_id_result(id)
if request.method == 'GET':
user_id = json.loads(''.join(x for x in request.args))['id']
print(user_id)
app.logger.info(user_id ' is search ING .......')
result_json = get_id_result(user_id)
return Response(result_json)
if __name__ == '__main__':
handler = logging.FileHandler(log_file_str, encoding='UTF-8')
handler.setLevel(log_level)
logging_format = logging.Formatter(
'%(asctime)s - %(levelname)s - %(filename)s - %(funcName)s - %(lineno)s - %(message)s')
handler.setFormatter(logging_format)
app.logger.addHandler(handler)
app.run(debug=True, host='0.0.0.0', port=18081)
#放在这里是不对的
# CORS(app, supports_credentials=True)flask 跨域问题的处理
在处理跨域问题时候，应该把下列代码弄成全局的，也就是放 app = Flask(name) cors = CORS(app)
否则跨域问题依然存在，报错信息为：
Access to XMLHttpRequest at ‘-----’ from origin ‘http://localhost:63342’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
flask 日志
https://blog.csdn.net/iszhenyu/article/details/56846551
flask 微服务Flask-RESTful
写完了发现 https://flask-restful.readthedocs.io/en/latest/
启动服务命令
参考：https://www.cnblogs.com/zzyoucan/p/7764590.html nohup command > myout.file 2>&1 &
