FormTag renders empty <div> tag [SPR-16498]

[spring-projects-issues]

Delete this account opened SPR-16498 and commented

The doEndTag method in org/springframework/web/servlet/tags/form/FormTag.java uses writeHiddenFields to write the ExtraHiddenFields to a <div> tag. The if statement inside writeHiddenFields checks for hiddenFields being null, but in the case of it being an empty Map will write an empty <div></div> at the end of the <form>.

Possible solutions:

• remove encapsulating <div>, possible hidden inputs would be direct children of the <form> tag
• check hiddenFields not only for null but also for empty keyset in the if condition

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Affects: 4.3.14

Referenced from: commits 350f318, 6d75732

Backported to: 4.3.15

[spring-projects-issues]

Juergen Hoeller commented

Good point, we're simply checking CollectionUtils.isEmpty there now. To be backported to 4.3.15.