XML使用sax解析器从特定的重复标记中获取值

import xml.sax

class MyHandler(xml.sax.ContentHandler):
    def __init__(self, target_tag):
        self.target_tag = target_tag
        self.is_target = False
        self.value = ""

    def startElement(self, name, attrs):
        if name == self.target_tag:
            self.is_target = True

    def characters(self, content):
        if self.is_target:
            self.value += content

    def endElement(self, name):
        if name == self.target_tag:
            self.is_target = False
            print("Value of {}: {}".format(self.target_tag, self.value))
            self.value = ""

# 创建SAX解析器对象
parser = xml.sax.make_parser()

# 设置自定义的ContentHandler
handler = MyHandler("target_tag")
parser.setContentHandler(handler)

# 解析XML文件
parser.parse("example.xml")