Python 在谷歌应用程序引擎上使用urlfetch时,我的代码错误在哪里

Python 在谷歌应用程序引擎上使用urlfetch时,我的代码错误在哪里,python,google-app-engine,urlfetch,Python,Google App Engine,Urlfetch,这是我的代码: class save(BaseRequestHandler): def get(self): counter = Counter.get_by_key_name('aa-s') counter.count += 1 url = "http://www.google.com" result = urlfetch.fetch(url) if result.status_code == 200:

这是我的代码:

class save(BaseRequestHandler):
    def get(self):
        counter = Counter.get_by_key_name('aa-s')
        counter.count += 1
        url = "http://www.google.com"
        result = urlfetch.fetch(url)

        if result.status_code == 200:
            counter.ajax = result.content
            counter.put()

        self.redirect('/')
错误是:

Traceback (most recent call last):
  File "D:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 511, in __call__
    handler.get(*groups)
  File "F:\ss\Task Queue\main.py", line 48, in get
    counter.ajax = result.content
  File "D:\Program Files\Google\google_appengine\google\appengine\ext\db\__init__.py", line 542, in __set__
    value = self.validate(value)
  File "D:\Program Files\Google\google_appengine\google\appengine\ext\db\__init__.py", line 2453, in validate
    raise BadValueError('Property %s is not multi-line' % self.name)
BadValueError: Property ajax is not multi-line
INFO     2010-11-04 08:24:29,905 dev_appserver.py:3283] "GET /save HTTP/1.1" 500 -
所以我找不到错误

是的


谢谢

错误在您的计数器型号中

ajax需要是一个多行字符串属性。看

您将要执行以下操作:

ajax = db.StringProperty(multiline=True)

还要注意,db.StringProperty只能用于500个字符或更少的字符串。

您正在尝试将结果存储到counter.ajax中,这是一个StringProperty,没有multiline=True。在“ajax”的定义中设置multiline=True,或者将其替换为TextProperty。后者几乎可以肯定是正确的答案——TextProperties可以更长,并且没有索引