python学习笔记（十七）flask模块写接口

 import flask,json
 from tools import op_mysql  #op_mysql()
 # 接口，后台服务
 server = flask.Flask(__name__) #把咱们这个app这个python文件当做一个server
 @server.route('/get_user',methods=['get','post'])
 def get_all_user():
     sql = 'select * from bt_stu;'
     res = op_mysql(
         host='211.149.218.16',
         user='jxz', password='',  # port这里一定要写int类型
         port=3306, db='jxz', charset='utf8', sql=sql)
     response = json.dumps(res,ensure_ascii=False) #把list转成json
     return response #return 的时候只能return字符串

 @server.route('/add_user',methods=['post'])
 def add_user():
     user_id = flask.request.values.get('id')  #这里的参数就是调用接口的时候传入的参数
     username = flask.request.values.get('u') #
     if user_id and username:
         sql = "insert into stu values ('%s','%s');"%(user_id,username)
         res = op_mysql(
             host='211.149.218.16',
             user='jxz', password='',  # port这里一定要写int类型
             port=3306, db='jxz', charset='utf8', sql=sql)
         response = {'code':308,'msg':'添加成功'}
     else:
         response = {'code':503,'msg':'必填参数未填！'}
     return json.dumps(response,ensure_ascii=False)

 server.run(port=8080,debug=True)