在visualstudio中,我用python和flask实现了一个webapi,它使用pickle加载一个SVM,整个系统已经部署在apache上。
我的问题是,当我尝试从visualstudio进行系统调试时,一切正常,但当我将其加载到apache服务器上时,页面只会加载,不会给出结果或错误。
web应用程序的代码报告如下:
import PythonApplication2 as ml
import requests
import json
from flask_cors import CORS, cross_origin
from flask import Flask, jsonify, request, render_template
import pickle as pk
MLwebapp = Flask(__name__)
left_model=pk.load(open('C:\\myapp\\app\\left_classifier.pickle','rb'))
right_model=pk.load(open('C:\\myapp\\app\\right_classifier.pickle','rb'))
wsgi_app = MLwebapp.wsgi_app
# Make the WSGI interface available at the top level so wfastcgi can get it.
@MLwebapp.route('/')
def start():
return render_template('WebPage1.html')
@MLwebapp.route('/test')
def hello():
number='203'
list_left=[]
list_right=[]
for i in range(0,19):
data=requests.get('url here'+number+str(i))
json_data=json.loads(data.json())
number=json.loads(json_data['Dati'])
left_temp=[x[1] for x in number]
right_temp=[z[2] for z in number]
list_left.append(left_temp)
list_right.append(right_temp)
patient_vector_right,patient_vector_left=ml.funzionetotale(list_left,list_right)
patient_vector_left=patient_vector_left.reshape(1, -1)
patient_vector_right=patient_vector_right.reshape(1, -1)
prediction=ml.machine_learning(patient_vector_left,patient_vector_right,left_model,right_model)
risultato="Risultato: " + prediction
return jsonify(risultato)
if __name__ == '__main__':
import os
HOST = os.environ.get('SERVER_HOST', 'localhost')
try:
PORT = int(os.environ.get('SERVER_PORT', '8080'))
except ValueError:
PORT = 8080
MLwebapp.run(HOST, PORT)
模板WebPage1.html非常简单,只有一个用于测试系统的按钮:
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Ciao</title>
</head>
<body>
<h1>Test button2</h1>
<form method="get" action="/test">
<input type="submit" value="Press for test"/>
</form>
</body>
</html>
关于apache和WSGI的设置:
在httpd.conf文件地址:
added
LoadFile "c:/program files (x86)/microsoft visual studio/shared/python36_64/python36.dll"
LoadModule wsgi_module "c:/myapp/flask/lib/site-packages/mod_wsgi/server/mod_wsgi.cp36-win_amd64.pyd"
WSGIPythonHome "c:/myapp/flask"
Removed the # from LoadModule cgi_module modules/mod_cgi.so
added
Listen 8080
Removed the # from conf/extra/httpd-vhosts.conf
在httpd中-vhosts.conf文件地址:
added
<VirtualHost *:8080>
ServerAdmin localhost
ServerName localhost:8080
WSGIScriptAlias / "C:/myapp/app/web.wsgi"
DocumentRoot "C:/myapp/app"
<Directory "C:/myapp/app">
Require all granted
</Directory>
ErrorLog "C:/myapp/app/logs/error.log"
CustomLog "C:/myapp/app/logs/access.log" common
</VirtualHost>
创建网站.wsgi应用程序根目录中的文件:
import sys
sys.path.insert(0, 'C:/myapp/app')
from app import MLwebapp as application
通过一些测试,我了解到问题在于wsgi和pickle之间的关系,但是我找不到一个指南或帖子来帮助我解决问题。你知道吗
一个前进的方向是排除泡菜是一个问题。一种简单的方法是捕获在尝试加载pickle时发生的任何异常,并将它们传递给启动模板。像这样的
(与
right_model
相同)将
left_model_ex
传递到模板中可以看到的地方。你知道吗
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