有关使用 xml.dom.minidom 这个包修改/添加 xml 文件内容的问题 - V2EX
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IVeverKB

有关使用 xml.dom.minidom 这个包修改/添加 xml 文件内容的问题

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  •   IVeverKB Jan 14, 2021 1451 views
    This topic created in 1929 days ago, the information mentioned may be changed or developed.

    当我已经存在一个 xml 文件,使用这个包去添加新节点后,需要再添加一句这个才能使文件真正修改

    with open('myxml.xml', 'w') as f: dom.writexml(f, addindent=' ') 

    问题就出在这里,函数writexmladdindent参数表示每个子结点的缩近字符,我想让它缩进两个空格。但当这么设置后,原文件本来旧的子节点会在缩进两个空格的基础上再缩进两个空格,而新节点只缩进两个空格。其他参数同理。。。

    除了这个,还有一些节点也会发生奇怪的变动。

     [原文件] <?xml version="1.0" encoding="utf-8" ?> <root node> <old> <old>text</old> </old> </root node> [添加一个 new 节点后] <?xml version="1.0" encoding="utf-8" ?><root node> <old> <old>text</old> <new>text</new></old> </root node> 

    大概就是这样,好苦恼啊。各位之前有碰到过这类问题吗求助求助

    2 replies    2021-01-14 15:47:37 +08:00
    ysc3839
        1
    ysc3839  
       Jan 14, 2021   1
    大概是因为原来的空格会解析成 text node,可以写个脚本 strip 一下。
    参考这一段 https://github.com/ysc3839/AudioPlaybackConnector/blob/da39a942f38accae891df930a7b0a4074cdeb7d4/translate/xamlmin.py#L4-L9
    IVeverKB
        2
    IVeverKB  
    OP
       Jan 14, 2021
    @ysc3839 #1
    非常感谢!
    就用了这两行代码就解决了
    xamlmin(xml)
    xml.normalize()

    诶说到底还是对 xml 文件本质不了解,大佬找问题的方式太准了
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