当我尝试像这样在Scrapy中构造HtmlResponse对象时:

scrapy.http.HtmlResponse(url=self.base_url + dealer_url[0], body=dealer_html)


我收到此错误:

Traceback (most recent call last):

  File "d:\kerja\hit\python~1\<project_name>\<project_name>\lib\site-packages\twisted\internet\defer.py", line 588, in _runCallbacks

    current.result = callback(current.result, *args, **kw)

  File "D:\Kerja\HIT\Python Projects\<project_name>\<project_name>\<project_name>\<project_name>\spiders\fwi.py", line 69, in parse_items

    dealer_page = scrapy.http.HtmlResponse(url=self.base_url + dealer_url[0], body=dealer_html)

  File "d:\kerja\hit\python~1\<project_name>\<project_name>\lib\site-packages\scrapy\http\response\text.py", line 27, in __init__

    super(TextResponse, self).__init__(*args, **kwargs)

  File "d:\kerja\hit\python~1\<project_name>\<project_name>\lib\site-packages\scrapy\http\response\__init__.py", line 18, in __init__

    self._set_body(body)

  File "d:\kerja\hit\python~1\<project_name>\<project_name>\lib\site-packages\scrapy\http\response\text.py", line 43, in _set_body

    type(self).__name__)

TypeError: Cannot convert unicode body - HtmlResponse has no encoding


有谁知道如何解决这个错误?

最佳答案

HtmlResponse尝试检测编码:


  HtmlResponse类是TextResponse的子类,它添加了
  通过查看HTML元数据来编码自动发现支持
  http-equiv属性。请参见TextResponse.encoding。


因此,基本上,您提供给body参数(在您的情况下为dealer_html)的html字符串没有指定编码。
根据w3 docs of http-equiv,它应该具有:


HTML 4.01: <meta http-equiv="content-type" content="text/html; charset=UTF-8">
HTML5: <meta charset="UTF-8">



在这种情况下,您可以通过HtmlResponse参数在创建encoding对象时修复html或指定编码:

HtmlResponse(url='http://scrapy.org', body=u'some body', encoding='utf-8')

10-07 15:09