错误:XML 文档必须具有顶级元素

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时间:2020-09-06 11:59:06  来源:igfitidea点击:

error: XML document must have a top level element

xml

提问by user3165438

I use an XML file in a program I have developed.

我在我开发的程序中使用了一个 XML 文件。

When I install the program on another machine I get the following error:

当我在另一台机器上安装程序时,出现以下错误:

"XML document must have a top level element".   

Is there a problem in my XML content?

我的 XML 内容有问题吗?

    <?xml version="1.0" encoding="windows-1252"?>
<RefData version="1.0" exporter="EA.25">
    <DataSet name="RTF Document Templates" table="t_document where DocType='SSDOCSTYLE'" filter="DocID='#DocID#'">
        <DataRow>
            <Column name="DocID" value="{F9CAEC01-4CB8-433e-8881-9F9BF57720E2}"/>
            <Column name="DocName" value="MyXMLFileName"/>
            <Column name="Style" value="Zip=1;"/>
            <Column name="ElementID" value="SSDOCSTYLE"/>
            <Column name="ElementType" value="SSDOCSTYLE"/>
            <Column name="BinContent" xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="bin.base64">UEsDBBQAAAAIAGp9LkR/OD678CQAADBeAQAHABEAc3RyLmRhdFVUDQAHKVvVUilb1VIpW9VS
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            <Column name="DocType" value="SSDOCSTYLE"/>
            <Column name="IsActive" value="1"/>
        </DataRow>
    </DataSet>
</RefData>

Thanks in advance!

提前致谢!

回答by Mathias Müller

The XML file you have shown starts with:

您显示的 XML 文件开头为:

    <?xml version="1.0" encoding="windows-1252"?>

As you can see, there are whitespace characters in front of the XML declaration. Is it not allowed to have anycharacters before this line. Remove the whitespace and try again.

如您所见,XML 声明前面有空格字符。在此行之前是否不允许有任何字符。删除空格并重试。

I quote from here:

我从这里引用:

If the XML declaration is included, it must be situated at the first position of the first line in the XML document

如果包含 XML 声明,则它必须位于 XML 文档中第一行的第一个位置

If this is a typo in your post only, the problem lies elsewhere. When I remove the trailing whitespace, your XML displays without warning in a browser.

如果这只是您帖子中的一个错字,则问题出在其他地方。当我删除尾随空格时,您的 XML 会在浏览器中显示而不发出警告。



EDIT: The error:

编辑:错误:

"XML document must have a top level element".

Means that your XML file does not have one single root element (also called document node) which encloses all other elements. But this is definitely not the case with the XML you have shown.

意味着您的 XML 文件没有包含所有其他元素的单个根元素(也称为文档节点)。但这绝对不是您展示的 XML 的情况。

A bad example(that causes this error):

一个不好的例子(导致这个错误):

<foo>
  <bar/>
  <bar/>
</foo>
<bar/>

A well-formed example

一个结构良好的例子

<foo>
  <bar>
  <bar>
</foo>