Question

使用正则表达式的python代码，可以执行类似的操作

输入：

<script type="text/javascript">
(function(){var d=document.domain;while (true){try{var A=window.parent.document.domain;break;}catch(e)
 {};d=d.replace(/.*?(?:\.|$)/,'');if (d.length==0) break;try{document.domain=d;}catch (e){break;}}})();
window.parent.OnUploadCompleted(0,"/userfiles/abc.txt","abc.txt", "") ;</script>

带有abc.txt的变量就像self.filename

仅输出：/userfiles/abc.txt，不包含abc.txt

问题是userfiles也是一个变量。

谢谢。/.

Answer 1

假设：

1）您想要的总是一个txt文件

2）字符串始终是 path ，其中包含字符/

以下模式应该起作用：

import re

INPUT = """<script type="text/javascript">
(function(){var d=document.domain;while (true){try{var A=window.parent.document.domain;break;}catch(e)
 {};d=d.replace(/.*?(?:\.|$)/,'');if (d.length==0) break;try{document.domain=d;}catch (e){break;}}})();
window.parent.OnUploadCompleted(0,"/userfiles/abc.txt","abc.txt", "") ;</script>"""

get_path = re.search(r"\"([^\"]*\/[^\"]*txt)\"",INPUT).group(1)

print(get_path)

输出：

/userfiles/abc.txt

Link for reference

Answer 2

此表达式可能在这里起作用：

OnUploadCompleted\([0-9]+\s*,\s*\"\/(.+?)\"

，我们所需的输出在此捕获组(.+?)中。

Please see the demo for additional explanation.

测试

import re

regex = r"OnUploadCompleted\([0-9]+\s*,\s*\"\/(.+?)\""

test_str = ("<script type=\"text/javascript\">\n"
    "(function(){var d=document.domain;while (true){try{var A=window.parent.document.domain;break;}catch(e)\n"
    " {};d=d.replace(/.*?(?:\\.|$)/,'');if (d.length==0) break;try{document.domain=d;}catch (e){break;}}})();\n"
    "window.parent.OnUploadCompleted(0,\"/userfiles/abc.txt\",\"abc.txt\", \"\") ;</script>")

matches = re.finditer(regex, test_str, re.MULTILINE)

for matchNum, match in enumerate(matches, start=1):

    print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))

    for groupNum in range(0, len(match.groups())):
        groupNum = groupNum + 1

        print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))

Python Regex查找带双引号的变量的字符串

2 个答案:

测试