Validate XML with VS Code

Question

I was a Mac user with BBEdit & Co. Now I'm on Windows with VS Code. I'm looking for an easy solution to validate XML with VS Code. Is there an extension for this?

Thanks!

I know. But it would be great to have it directly in the tool. By the way, which online validator would you recommend? — Haeme Ulrich, Sep 13 '17 at 16:43

score 12 · Answer 1 · edited Jul 21 '21 at 08:03

12

I just wanted to know if my xml syntax was valid, and I didn't want to have to install and setup Java.

XML Tools from Qub worked great for me, I highly recommend it:
https://marketplace.visualstudio.com/items?itemName=qub.qub-xml-vscode

If you need to validate xml against a schema, some of the other more popular extensions might be better

edited Jul 21 '21 at 08:03

Bill Tür stands with Ukraine

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answered Dec 19 '18 at 22:14

Devin Rhode

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How do you get it to actually tell you if your xml is valid? I don't see that option in the command palette? – SuperCow Feb 07 '20 at 22:43
try making it obviously invalid by deleting a `<` – Devin Rhode Feb 08 '20 at 13:11
@SuperCow There is an `XML DOCUMNET ` in the left functional area which below the `OUTLINE` . If the xml file is invalid, it will show invalidDocument – roamer Dec 28 '20 at 02:12
@roamer I see the outline in the bottom left of vscode below the workspace, but no `xml document`. Do I need to put a definition of xmltools in `settings`? – Timo Jun 22 '21 at 19:07
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If I make the xml invalid by removing a bracket: no remark by vscode. I can format it with the tool and I have `evaluate xpath` when pressing `f1` – Timo Jun 22 '21 at 19:08
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@Timo Firstly, you need to install XML Tools plugin, xml tree view is default enable. Secondly, open a XXX.xml file with VS Code. Finally, you will see the `XML DOCUMNET ` – roamer Dec 08 '21 at 07:00
No entry in any menu to validate XML against a XSD schema. – Aubin Apr 14 '23 at 11:22

score 9 · Answer 2 · answered Jun 17 '21 at 15:12

For validation against a schema there is XML extension by Red Hat https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml this no longer requires Java since v0.15.0.

It supports a few ways of associating an *.xml with an *.xsd or *.dtd see the docs at https://github.com/redhat-developer/vscode-xml/blob/master/docs/Validation.md#validation-with-xsd-grammar

Most methods involve modifying the files or creating a catalog file but you can also associate files using settings.json.

XSD

"xml.fileAssociations": [
   {
       "pattern": "foo.xml",
       "systemId": "foo.xsd"
   }
]

DTD

"xml.fileAssociations": [
  {
      "pattern": "foo.xml",
      "systemId": "foo.dtd"
  }
]

File paths support wildcards and VS Code variables ${workspaceFolder}, ${fileDirname}, ${fileBasenameNoExtension}

Doesn't work in corporate environnement. – Aubin Apr 14 '23 at 11:11 — Aubin, Apr 14 '23 at 11:11

score 7 · Accepted Answer · edited Jun 28 '23 at 13:01

7

There is "XML" extension (known as "XML Language Support by Red Hat") that does not require Java.

Old answer:

For validating XML Schemas in VS Code there is a package called XML Language Support.

edited Jun 28 '23 at 13:01

izogfif

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answered Jan 14 '18 at 09:24

lukejkw

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downvote because this extension requires java, unlike XML Tools from Qub https://marketplace.visualstudio.com/items?itemName=qub.qub-xml-vscode – Devin Rhode Dec 19 '18 at 22:15
3

Unfortunately, now it is deprecated. Also agree with Devin that disadvantage is that it requires JDK or OpenJDK. – essential Oct 26 '20 at 17:43

Validate XML with VS Code

3 Answers3

XSD

DTD

Linked