XML - 根级别的数据无效 [英] XML - Data At Root Level is Invalid

问题描述

我有一个以 UTF-8 编码的 XSD 文件，我运行它的任何文本编辑器都不会在文件的开头显示任何字符，但是当我在 Visual Studio 的调试器中将其拉出时，我清楚看到文件前面有一个空框.

我也收到错误:

根级别的数据无效.第 1 行，位置 1.

有人知道这是什么吗?

更新:编辑帖子以限定文件类型.它是由 Microsoft 的 XSD 创建者创建的 XSD 文件.

解决方案

事实证明，答案是我看到的是一个 中打开它:，并进行，那么我可能就没有这个问题了.

I have an XSD file that is encoded in UTF-8, and any text editor I run it through doesn't show any character at the beginning of the file, but when I pull it up in Visual Studio's debugger, I clearly see an empty box in front of the file.

I also get the error:

Data at the root level is invalid. Line 1, position 1.

Anyone know what this is?

Update: Edited post to qualify type of file. It's an XSD file created by Microsoft's XSD creator.

解决方案

It turns out, the answer is that what I'm seeing is a Byte Order Mark, which is a character that tells whatever is loading the document what it is encoded in. In my case, it's encoded in utf-8, so the corresponding BOM was EF BB BF, as shown below. To remove it, I opened it up in Notepad++ and clicked on "Encode in UTF-8 without BOM", as shown below:

.

To actually see the BOM, I had to open it up in TextPad in Binary mode:, and conducted a Google search for "EF BB BF".

It took me about 8 hours to find out this was what was causing it, so I thought I'd share this with everyone.

Update: If I had read Joel Spolsky's blog post: The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!), then I might not have had this problem.

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