教你分分钟搞定Python之Flask框架

用最短的时间开发一个数据操作接口，Python是王道！

一、安装pip

1、首先检查linux有没有安装python-pip包，终端执行 pip -V
[root@ network-scripts]# pip -V
-bash: pip: command not found
2、没有python-pip包就执行命令 yum -y install epel-release
[root@ network-scripts]# yum -y install epel-release
3、执行成功之后，再次执行yum -y install python-pip
[root@ network-scripts]# yum install python-pip
4、对安装好的pip进行升级 pip install --upgrade pip
[root@ network-scripts]# pip install --upgrade pip
至此，pip安装好了，执行pip -V 再次检查pip环境。
[root@ network-scripts]# pip -V
pip 9.0.1 from /usr/lib/python2.7/site-packages (python 2.7)

二、下载Flask模块

pip install flask

三、新建app.py文件

#!flask/bin/python
# -*- coding: utf-8 -*-
from flask import Flask,request
import sys
import os
reload(sys)
sys.setdefaultencoding('utf8')
sys.path.append('./service')
from a import AClass 
app = Flask(__name__)
@app.route('/', methods=['GET'])
def index():
    return "Hello, World!"
@app.route('/list', methods=['GET'])
def id():
    m = request.args.get('m')
    return "你好!" + m
@app.route('/cmd', methods=['GET'])
def test():
    cmd = request.args.get('cmd')
    var=os.popen(cmd).read( )
    return  var
@app.route('/pwd', methods=['GET'])
def pwd():
    f = open('/etc/passwd','r')
    pwd = f.read()
    f.close()
    return pwd
@app.route('/shell', methods=['GET'])
def shell():
    var=os.popen('{ echo 1; }| ./service/git.sh').read( )
    return  var
@app.route('/tt', methods=['GET'])
def tt():
    a = AClass()
    return a.add()
if __name__ == '__main__':
    app.run(debug=True,host='192.168.213.15',port=28222)

四、新建service目录与a.py

class AClass:  
    def add(self):  
        return "ok"

五、启动服务

python ./app.py

六、访问服务

curl http://192.168.213.15:28222/