tornado api 簡單模板

# 安裝

pip insatll tornado

 

# 主文件 web_server.py

#!/usr/bin/env python
# encoding: utf-8

import tornado.httpserver
import tornado.options
import tornado.web
from tornado.options import define,options
import sys,os,re

from apicode import Apicode  # 具體本身業務用到的模塊！！


reload(sys)
sys.setdefaultencoding('utf-8')


# 定義默認調用端口爲8088
define("port",default=8088,help="run on the given port",type=int)

# 驗證碼演示demo
class VcodeHandler(tornado.web.RequestHandler):
    # get 請求
    def get(self):
        result = self.get_argument("result",{})
        city = self.get_argument('city', u'重慶')
        self.render("input_code.html", city=city, result=result)

    # post 請求
    def post(self):
        
        result = {'code':0 , 'msg': 'success', 'result': ''}
        
        # 獲取參數
        city = self.get_argument('city', 'CQ')
        method = self.get_argument('method', 'LR')
        detail = eval(self.get_argument('detail', False))
        imgUrl = self.get_argument('imgUrl', '')
        imgFile = self.request.files.get('imgfile', [])
        fname = ''

        # url 方式
        if imgUrl and re.search('.+\.(jpg|png|bmp|gif)', imgUrl):
            fname = './static/uploads/%s' % imgUrl.split('/')[-1]
            result['result']= vcode.predict_url(city, imgUrl, detail, method)
       
        # 上傳文件方式
        elif imgFile:
            for img in imgFile:
                with open('./static/uploads/' + img['filename'], 'wb') as fw:
                    fw.write(img['body'])
                fname = './static/uploads/' + img['filename']
                result['result'] = vcode.predict(city, fname, detail, method)       
        else:
            errorMsg = "上傳驗證碼圖片文件錯誤或url圖片格式不正確"
            result['code'] = '-1'
            result['msg'] = errorMsg

        self.render("output_code.html", city=city, source=fname, detail=detail, method=method, result=result)

# 驗證碼調用api
class VcodeApiHandler(tornado.web.RequestHandler):

    def get(self):
        result = {'code': 1000 , 'msg': '調用參數錯誤， 請用post方式請求， city & imgfile 參數', 'result': '使用說明: http://gitlab.tangees.com/miaoweihong/verify-code'}
        json_result = tornado.escape.json_encode(result)
        self.write(json_result)

    def post(self):
        
        result = {'code': 0 , 'msg': 'success', 'result': ''}
        city = self.get_argument('city', 'CQ')
        method = self.get_argument('method', 'LR')
        detail = eval(self.get_argument('detail', False))

        imgFile = self.request.files.get('imgfile', [])
        if imgFile:
            for img in imgFile:
                with open('./static/uploads/' + img['filename'], 'wb') as fw:
                    fw.write(img['body'])
                fname = './static/uploads/' + img['filename']
                try:
                    result['result'] = vcode.predict(city, fname, detail, method)
                except Exception as e:
                    result['code'] = 1001
                    result['msg'] = '上傳文件內容有誤' + str(e)
        else:
            result['code'] = 1002
            result['msg'] = '沒有文件內容'
        # 返回json結果
        json_result = tornado.escape.json_encode(result)
        self.write(json_result)


class TestHandler(tornado.web.RequestHandler):
    def get(self):
        self.write('hello, jkmiao')


if __name__ == "__main__":
    
    # 引入自行定義的模塊
    vcode = Apicode() 
    tornado.options.parse_command_line()
    
    app = tornado.web.Application(
        handlers = [(r'/vcode',VcodeHandler), (r'/vcodeapi', VcodeApiHandler)], # url匹配
        template_path = os.path.join(os.path.dirname(__file__),"templates"),  # 定義視圖頁面地址，放 html文件
        static_path = os.path.join(os.path.dirname(__file__), "static"),   # 定義靜態模板，放 css,js等文件
        debug=True,   # 是否爲debug模式
        autoescape=None, # 不設置轉義字符
        )
    http_server = tornado.httpserver.HTTPServer(app)
    http_server.listen(options.port)
    print "starting tornado at port http://127.0.0.1:%d" % options.port
    tornado.ioloop.IOLoop.instance().start()

搞定！

 教程

===============最基本  hello world ==================

代碼清單：hello.py

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web

from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)

class IndexHandler(tornado.web.RequestHandler):
    def get(self):
        greeting = self.get_argument('greeting', 'Hello')
        self.write(greeting + ', friendly user!')

if __name__ == "__main__":
    tornado.options.parse_command_line()
    app = tornado.web.Application(handlers=[(r"/", IndexHandler)])
    http_server = tornado.httpserver.HTTPServer(app)
    http_server.listen(options.port)
    tornado.ioloop.IOLoop.instance().start()