我正在尝试使用缩小网站服务的网站缩略图。他们有一个返回XML的API,告诉您是否可以创建站点缩略图。我正在尝试使用ElementTree来解析xml,但不知道如何获取我需要的信息。以下是XML响应的示例:
<?xml version="1.0" encoding="UTF-8"?>
<stw:ThumbnailResponse xmlns:stw="http://www.shrinktheweb.com/doc/stwresponse.xsd">
<stw:Response>
<stw:ThumbnailResult>
<stw:Thumbnail Exists="false"></stw:Thumbnail>
<stw:Thumbnail Verified="false">fix_and_retry</stw:Thumbnail>
</stw:ThumbnailResult>
<stw:ResponseStatus>
<stw:StatusCode>Blank Detected</stw:StatusCode>
</stw:ResponseStatus>
<stw:ResponseTimestamp>
<stw:StatusCode></stw:StatusCode>
</stw:ResponseTimestamp>
<stw:ResponseCode>
<stw:StatusCode></stw:StatusCode>
</stw:ResponseCode>
<stw:CategoryCode>
<stw:StatusCode>none</stw:StatusCode>
</stw:CategoryCode>
<stw:Quota_Remaining>
<stw:StatusCode>1</stw:StatusCode>
</stw:Quota_Remaining>
</stw:Response>
</stw:ThumbnailResponse>
我需要获取“stw:StatusCode”。如果我尝试在“stw:StatusCode”上进行查找,则会出现“预期路径分隔符”语法错误。有没有办法获得状态代码?
答案 0 :(得分:1)
Grrr名称空间....试试这个:
STW_PREFIX = "{http://www.shrinktheweb.com/doc/stwresponse.xsd}"
(参见示例XML的第2行)
然后,当您需要stw:StatusCode
这样的标记时,请使用STW_PREFIX + "StatusCode"
更新:XML响应不是最精彩的设计。从单个示例中猜测是否可以存在多于1个第二级节点是不可能的。请注意,每个第3级节点都有一个“StatusCode”子节点。下面是一些粗略的代码,向您展示(1)为什么需要STW_PREFIX caper(2)可用信息的摘录。
import xml.etree.cElementTree as et
def showtag(elem):
return repr(elem.tag.rsplit("}")[1])
def showtext(elem):
return None if elem.text is None else repr(elem.text.strip())
root = et.fromstring(xml_response) # xml_response is your input string
print repr(root.tag) # see exactly what tag is in the element
for child in root[0]:
print showtag(child), showtext(child)
for gc in child:
print "...", showtag(gc), showtext(gc), gc.attrib
结果:
'{http://www.shrinktheweb.com/doc/stwresponse.xsd}ThumbnailResponse'
'ThumbnailResult' ''
... 'Thumbnail' None {'Exists': 'false'}
... 'Thumbnail' 'fix_and_retry' {'Verified': 'false'}
'ResponseStatus' ''
... 'StatusCode' 'Blank Detected' {}
'ResponseTimestamp' ''
... 'StatusCode' None {}
'ResponseCode' ''
... 'StatusCode' None {}
'CategoryCode' ''
... 'StatusCode' 'none' {}
'Quota_Remaining' ''
... 'StatusCode' '1' {}