如何使用 python SAX 解析器获取标签之间的文本? [英] How can I get the text between tags using python SAX parser?

问题描述

我需要的只是获取相应标签的文本并将其持久化到数据库中.由于 xml 文件很大(4.5GB)，我使用的是 sax.我使用 characters 方法来获取文本并将其放入字典中.但是，当我在 endElement 方法中打印文本时，我得到了一个新行而不是文本.

What I need is just get the text of the corresponding tag and persist it into database. Since the xml file is big (4.5GB) I'm using sax. I used the characters method to get the text and put it in a dictionary. However when I'm printing the text at the endElement method I'm getting a new line instead of the text.

这是我的代码:

def characters(self,content):
   text = unescape(content))
   self.map[self.tag]=text

def startElement(self, name, attrs):
   self.tag = name

def endElement (self, name)
   if (name=="sometag")
   print self.map[name]

提前致谢.

推荐答案

标签中的文本由 SAX 处理器分块.characters 可能会被多次调用.

The text in the tag is chunked by the SAX processor. characters might be called multiple times.

您需要执行以下操作:

def startElement(self, name, attrs):
    self.map[name] = ''
    self.tag = name

def characters(self, content):
    self.map[self.tag] += content

def endElement(self, name):
    print self.map[name]

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