Question

让我从这开始，我不知道python，我可能有一天通过python教程。情况就是这样。我有一个角度应用程序，在iframe的vm上有一个用Apache托管的python应用程序。我没有编写python应用程序，但是另一个开发人员给我写了一个端点，我应该可以从我的角度应用程序发布。

制作python端点的开发人员说我的请求有问题，但我相当确定没有任何错误。我几乎100％确定问题是响应中没有CORS头和/或响应未设置为响应OPTIONS方法。下面是整个python端点：

import os, site, inspect
site.addsitedir(os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))+"/../")
import json
from datetime import datetime

import pymongo

from Config import Config


def application(environ, start_response):
  response = environ['wsgi.input'].read(int(environ['CONTENT_LENGTH']))

  if response:
    json_response = json.loads(response)

    document = {
      'payment_id': json_response['payment_id'],
      'log': json_response['log'],
      'login_id': json_response['login_id'],
      'browser': environ.get('HTTP_USER_AGENT', None),
      'ip_address': environ.get('REMOTE_ADDR', None),
      'created_at': datetime.utcnow(),
    }

    client = pymongo.MongoClient(Config.getValue('MongoServer'))
    db = client.updatepromise
    db.PaymentLogs.insert(document)

    start_response('200 OK', [('Content-Type', 'application/json')
    return '{"success": true}'

  start_response('400 Bad Request', [('Content-Type', 'application/json')])
  return '{"success": false}'

我尝试了以下方法来完成这项工作：我在start_response函数中添加了更多标题，所以代码现在看起来像这样：

start_response('201 OK', [('Content-Type', 'application/json',
  ('Access-Control-Allow-Headers','authorization'),
  ('Access-Control-Allow-Methods','HEAD, GET, POST, PUT, PATCH, DELETE'),
  ('Access-Control-Allow-Origin','*'),
  ('Access-Control-Max-Age','600'))])

不是：我一开始就用200和400的响应做了这个，并且在响应中看不到任何变化，然后只是为了它，我决定将200更改为201，这也是没有通过回复，所以我怀疑这段代码甚至没有因为某些原因而被运行。

请帮忙，python newb在这里。

附录，我认为这会有所帮助，这是Headers在回复中的样子：

General:

Request URL: http://rpc.local/api/payment_log_api.py
Request Method: OPTIONS
Status Code: 200 OK
Remote Address: 10.1.20.233:80
Referrer Policy: no-referrer-when-downgrade

Response Headers:

Allow: GET,HEAD,POST,OPTIONS
Connection: Keep-Alive
Content-Length: 0
Content-Type: text/x-python
Date: Fri, 27 Apr 2018 15:18:55 GMT
Keep-Alive: timeout=5, max=100
Server: Apache/2.4.18 (Ubuntu)

Request Headers:

Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Access-Control-Request-Headers: authorization,content-type
Access-Control-Request-Method: POST
Connection: keep-alive
Host: rpc.local
Origin: http://10.1.20.61:4200
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36

Answer 1

在这里。只需在开头将其添加到应用程序：

def application(environ, start_response):
  if environ['REQUEST_METHOD'] == 'OPTIONS':
    start_response(
      '200 OK',
      [
        ('Content-Type', 'application/json'),
        ('Access-Control-Allow-Origin', '*'),
        ('Access-Control-Allow-Headers', 'Authorization, Content-Type'),
        ('Access-Control-Allow-Methods', 'POST'),
      ]
    )
    return ''

Answer 2

对于具有CGI的Python，我发现它可以工作：

densityblocks = []
# make an empty list for each block
for i in range(num_blocks):
    densityblocks.append([])
# Divide densities into blocks
for k in range(len(depth)):
    if depth[k] < 500:
        densityblocks[0].append(density[k])
    elif depth[k]<1000:
        densityblocks[1].append(density[k])
    # Continue with elif for number of blocks
# calculate average for each block
avg_density = []
for i in range(len(densityblocks)):
    for j in range(len(densityblocks[i])):
        sum = sum + densityblocks[i][j]
    avg_density.append(sum/len(densityblocks[i]))

别忘了在另一侧也启用CORS，例如JavaScript jQuery：

print '''Access-Control-Allow-Origin: *\r\n''',
print '''Content-Type: text/html\r\n'''

如何在python

2 个答案: