Python Web項(xiàng)目Cherrypy使用方法鏡像
1、介紹
搭建Java Web項(xiàng)目，需要Tomcat服務(wù)器才能進(jìn)行。而搭建Python Web項(xiàng)目，因?yàn)閏herrypy自帶服務(wù)器，所以只需要下載該模塊就能進(jìn)行Web項(xiàng)目開(kāi)發(fā)。
2、最基本用法
實(shí)現(xiàn)功能：訪問(wèn)html頁(yè)面，點(diǎn)擊按鈕后接收后臺(tái)py返回的值
html頁(yè)面（test_cherry.html）
<!DOCTYPE html><html><head> <meta charset='utf-8'> <title>Test Cherry</title> <script src='https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js'></script></head><body> <h1>Test Cherry</h1> <p id='p1'></p> <button type='button' onclick='callHelloWorld()'>hello_world</button> <script> function callHelloWorld() { $.get(’/hello_world’, function (data, status) {alert(’data:’ + data)alert(’status:’ + status) }) } </script></body></html>
編寫腳本py
# -*- encoding=utf-8 -*-import cherrypyclass TestCherry(): @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù) def hello_world(self): print(’Hello’) return ’Hello World’ @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù)http://127.0.0.1:8080/index def index(self): # 默認(rèn)頁(yè)為test_cherry.html return open(u’test_cherry.html’)cherrypy.quickstart(TestCherry(), ’/’)
運(yùn)行結(jié)果
[27/May/2020:09:04:42] ENGINE Listening for SIGTERM.[27/May/2020:09:04:42] ENGINE Bus STARTINGCherryPy Checker:The Application mounted at ’’ has an empty config.
[27/May/2020:09:04:42] ENGINE Set handler for console events.[27/May/2020:09:04:42] ENGINE Started monitor thread ’Autoreloader’.[27/May/2020:09:04:42] ENGINE Serving on http://127.0.0.1:8080[27/May/2020:09:04:42] ENGINE Bus STARTED
能看到啟動(dòng)的路徑為127.0.0.1::8080端口號(hào)是8080
The Application mounted at ’’ has an empty config.表示沒(méi)有自己配置，使用默認(rèn)配置，如果需要可自己配置
運(yùn)行py腳本后，打開(kāi)瀏覽器輸入http://127.0.0.1:8080/或者h(yuǎn)ttp://127.0.0.1:8080/index就可以看到test_cheery.html
點(diǎn)擊hello_world按鈕，就會(huì)訪問(wèn)py中的hello_world函數(shù)
解釋：test_cherry.html中
function callHelloWorld() {
$.get(’/hello_world’, function (data, status) {
alert(’data:’ + data)
alert(’status:’ + status)
})}
1）請(qǐng)求/hello_world需要與py中的函數(shù)名一致
2）默認(rèn)端口是8080，如果8080被占用，可以重新配置
cherrypy.quickstart(TestCherry(), ’/’)可以接收配置參數(shù)
若多次調(diào)試出現(xiàn)portend.Timeout: Port 8080 not free on 127.0.0.1.錯(cuò)誤
是因?yàn)?080端口被占用了，如果你第一次調(diào)試時(shí)成功了，則你可以打開(kāi)任務(wù)管理器把python進(jìn)程停掉，8080就被釋放了
3、導(dǎo)入webbrowser進(jìn)行調(diào)試開(kāi)發(fā)（可以自動(dòng)打開(kāi)瀏覽器，輸入網(wǎng)址）
py代碼
# -*- encoding=utf-8 -*-import cherrypyimport webbrowserclass TestCherry(): @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù) def hello_world(self): print(’Hello’) return ’Hello World’ @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù)http://127.0.0.1:8080/index def index(self): # 默認(rèn)頁(yè)為test_cherry.html return open(u’test_cherry.html’)def auto_open(): webbrowser.open(’http://127.0.0.1:8080/’)cherrypy.engine.subscribe(’start’, auto_open) #啟動(dòng)前每次都調(diào)用auto_open函數(shù)cherrypy.quickstart(TestCherry(), ’/’)
這樣運(yùn)行py就能自動(dòng)打開(kāi)網(wǎng)頁(yè)了，每次改變html代碼如果沒(méi)達(dá)到預(yù)期效果，可以試一試清理瀏覽器緩存！！！
4、帶參數(shù)的請(qǐng)求
實(shí)現(xiàn)傳入?yún)?shù)并接收返回顯示在html上
py中添加一個(gè)函數(shù)(get_parameters)
# -*- encoding=utf-8 -*-import cherrypyimport webbrowserclass TestCherry(): @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù) def hello_world(self): print(’Hello’) return ’Hello World’ @cherrypy.expose() # 保證html能請(qǐng)求到該函數(shù)http://127.0.0.1:8080/index def index(self): # 默認(rèn)頁(yè)為test_cherry.html return open(u’test_cherry.html’) @cherrypy.expose() def get_parameters(self, name, age, **kwargs): print(’name:{}’.format(name)) print(’age:{}’.format(age)) print(’kwargs:{}’.format(kwargs)) return ’Get parameters success’def auto_open(): webbrowser.open(’http://127.0.0.1:8080/’)cherrypy.engine.subscribe(’start’, auto_open) # 啟動(dòng)前每次都調(diào)用auto_open函數(shù)cherrypy.quickstart(TestCherry(), ’/’)
html中添加一個(gè)新按鈕和對(duì)應(yīng)按鈕事件
<!DOCTYPE html><html><head> <meta charset='utf-8'> <title>Test Cherry</title> <script src='https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js'></script></head><body> <h1>Test Cherry</h1> <p id='p1'></p> <button type='button' onclick='callHelloWorld()'>hello_world</button> <button type='button' id='postForParameters'>get_parameters</button> <p id='getReturn'></p> <script> function callHelloWorld() { $.get(’/hello_world’, function (data, status) {alert(’data:’ + data)alert(’status:’ + status) }) } $(document).ready(function () { $(’#postForParameters’).click(function () {alert(’pst’)$.post(’/get_parameters’, { name: ’TXT’, age: 99, other: ’123456’ }, function (data, status) { if (status === ’success’) { $(’#getReturn’).text(data) } }) }) }) </script></body></html>
運(yùn)行結(jié)果
點(diǎn)擊get_parameters按鈕后
D:Python37_32python.exe D:/B_CODE/Python/WebDemo/test_cherry.py[27/May/2020:09:58:40] ENGINE Listening for SIGTERM.[27/May/2020:09:58:40] ENGINE Bus STARTINGCherryPy Checker:The Application mounted at ’’ has an empty config.
[27/May/2020:09:58:40] ENGINE Set handler for console events.[27/May/2020:09:58:40] ENGINE Started monitor thread ’Autoreloader’.[27/May/2020:09:58:41] ENGINE Serving on http://127.0.0.1:8080[27/May/2020:09:58:41] ENGINE Bus STARTED127.0.0.1 - - [27/May/2020:09:58:41] 'GET / HTTP/1.1' 200 1107 '' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'127.0.0.1 - - [27/May/2020:09:59:37] 'GET / HTTP/1.1' 200 1136 '' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'127.0.0.1 - - [27/May/2020:09:59:37] 'GET /favicon.ico HTTP/1.1' 200 1406 'http://127.0.0.1:8080/' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'127.0.0.1 - - [27/May/2020:10:02:50] 'GET / HTTP/1.1' 200 1208 '' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'127.0.0.1 - - [27/May/2020:10:02:50] 'GET /favicon.ico HTTP/1.1' 200 1406 'http://127.0.0.1:8080/' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'name:TXTage:99kwargs:{’other’: ’123456’}127.0.0.1 - - [27/May/2020:10:02:54] 'POST /get_parameters HTTP/1.1' 200 22 'http://127.0.0.1:8080/' 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36'
能看出傳入的參數(shù)已經(jīng)打印出來(lái)了
5、config配置以及對(duì)應(yīng)url(追加，所以代碼不同了）
# -*- encoding=utf-8 -*-import jsonimport osimport webbrowserimport cherrypyclass Service(object): def __init__(self, port): self.media_folder = os.path.abspath(os.path.join(os.getcwd(), ’media’)) self.host = ’0.0.0.0’ self.port = int(port) self.index_html = ’index.html’ pass @cherrypy.expose() def index(self): return open(os.path.join(self.media_folder, self.index_html), ’rb’) def auto_open(self): webbrowser.open(’http://127.0.0.1:{}/’.format(self.port)) @cherrypy.expose() def return_info(self, sn): cherrypy.response.headers[’Content-Type’] = ’application/json’ cherrypy.response.headers[’Access-Control-Allow-Origin’] = ’*’ my_dict = {’aaa’:’123’}# 或者用list[]可保證有序 return json.dumps(my_dict).encode(’utf-8’)def main(): service = Service(8090) conf = { ’global’: { # 主機(jī)0.0.0.0表示可以使用本機(jī)IP訪問(wèn)，如http://10.190.20.72:8090，可部署給別人訪問(wèn) # 否則只可以用http://127.0.0.1:8090 ’server.socket_host’: service.host, # 端口號(hào) ’server.socket_port’: service.port, # 當(dāng)代碼變動(dòng)時(shí)，是否自動(dòng)重啟服務(wù)，True==是，F(xiàn)alse==否 # 設(shè)為True時(shí)，當(dāng)該P(yáng)Y代碼改變，服務(wù)會(huì)重啟 ’engine.autoreload.on’: False }, # 根目錄設(shè)置 ’/’: { ’tools.staticdir.on’: True, ’tools.staticdir.dir’: service.media_folder }, ’/static’: { ’tools.staticdir.on’: True, # 可以這么訪問(wèn)http://127.0.0.1:8090/static加上你的資源，例如 # http://127.0.0.1:8090/static/js/jquery-1.11.3.min.js ’tools.staticdir.dir’: service.media_folder }, } # 可以使用該種寫法代替config配置 # cherrypy.config.update( # {’server.socket_port’: service.port}) # cherrypy.config.update( # {’server.thread_pool’: int(service.thread_pool_count)}) # 當(dāng)代碼變動(dòng)時(shí)，是否重啟服務(wù)，True==是，F(xiàn)alse==否 # cherrypy.config.update({’engine.autoreload.on’: False}) # 支持http://10.190.20.72:8080/形式 # cherrypy.server.socket_host = ’0.0.0.0’ # 啟動(dòng)時(shí)調(diào)用函數(shù) cherrypy.engine.subscribe(’start’, service.auto_open) cherrypy.quickstart(service, ’/’, conf)if __name__ == ’__main__’: pass main()
工程文件夾
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持好吧啦網(wǎng)。
相關(guān)文章：
1. 存儲(chǔ)于xml中需要的HTML轉(zhuǎn)義代碼2. python 浮點(diǎn)數(shù)四舍五入需要注意的地方3. Java GZip 基于內(nèi)存實(shí)現(xiàn)壓縮和解壓的方法4. python開(kāi)發(fā)一款翻譯工具5. 利用CSS制作3D動(dòng)畫(huà)6. Springboot 全局日期格式化處理的實(shí)現(xiàn)7. JAMon(Java Application Monitor)備忘記8. 完美解決vue 中多個(gè)echarts圖表自適應(yīng)的問(wèn)題9. SpringBoot+TestNG單元測(cè)試的實(shí)現(xiàn)10. jsp+servlet簡(jiǎn)單實(shí)現(xiàn)上傳文件功能（保存目錄改進(jìn)）
網(wǎng)公網(wǎng)安備