Question

我在我的开发系统中发现了这个问题，并在Eve模拟中找到了here

这是我运行的代码。

    import requests
    import json
    import string
    import random
    def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
        return ''.join(random.choice(chars) for _ in range(size))

    name = "max and me"
    data = {"lastname":id_generator(), "firstname":name}

    print data
    res = requests.post("http://127.0.0.1:5000/people", data = data)
    print res.text

    data = 'where={"firstname":"%s"}' % (name)
    res = requests.get("http://127.0.0.1:5000/people", params = data)
    print res.text

首先我做一个包含变量的POST，然后我在同一个变量上执行GET。首先，我将变量设置为“max and me”，所有运行正常然后我将with set设置为“max＆amp; me”，并且eve在我身上抛出：

    127.0.0.1 - - [23/Apr/2014 20:22:07] "GET /people?where=%7B%22firstname%22:%22max%20&%20me%22%7D HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/endpoints.py", line 53, in collections_endpoint
    response = get(resource, lookup)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/methods/common.py", line 226, in rate_limited
    return f(*args, **kwargs)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/auth.py", line 45, in decorated
    return f(*args, **kwargs)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/methods/common.py", line 429, in decorated
    r = f(*args, **kwargs)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/methods/get.py", line 104, in get
    cursor = app.data.find(resource, req, lookup)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/io/mongo/mongo.py", line 145, in find
    spec = parse(req.where)
  File "/Users/hingem/Documents/python/venv/lib/python2.7/site-packages/eve/io/mongo/parser.py", line 26, in parse
    v.visit(ast.parse(expression))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 37, in parse
    return compile(source, filename, mode, PyCF_ONLY_AST)
File "<unknown>", line 1
    {"firstname":"max
                     ^
SyntaxError: EOL while scanning string literal

我可能不会处理＆lt;＆amp;＆gt;符号可能 - 但我觉得我已经尝试了各种各样的编码...而且每次都被卡住....

Answer 1

尝试将&替换为其转义版本：%26。我刚试过这个GET到Eve驱动的API

?where={"name": "You %26 me"}

它运作得很好。

Answer 2

我认为你不能在URL中以未编码的方式使用＆符号 - 这意味着URL的下一部分查询。通常您必须将＆符号编码为%26。

我认为这是前夕的部分错误，因为如果你把未编码的＆符号放入URL的查询部分，Flask（这是Eve的基础）将它分成请求args和Eve然后尝试制作pythonic ast的“其中“part（它处理Python语法中的查询格式的方式），它在max之后结束，结果它引发了这个错误，因为它显然不是正确的python表达式。在此代码中https://github.com/nicolaiarocci/eve/blob/develop/eve/io/mongo/mongo.py#L151也应该有SyntaxError。也许你可以尝试在前夕的github上填写bug，并建议前夕应该返回400个错误的请求。

我希望这篇文章解释问题的核心。

＆＃34;中的字符（＆amp;）无效，其中＆＃34;要求夏娃

2 个答案: