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Support empty attributes in TagWriter #910

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Support empty attributes in TagWriter #910

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13 changes: 13 additions & 0 deletions spring-webmvc/src/main/java/org/springframework/web/servlet/tags/form/TagWriter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,19 @@ public void writeAttribute(String attributeName, String attributeValue) throws J
this.writer.append(" ").append(attributeName).append("=\"")
.append(attributeValue).append("\"");
}

/**
* Write an empty HTML attribute with the specified name.
* <p>Be sure to write all attributes <strong>before</strong> writing
* any inner text or nested tags.
* @throws IllegalStateException if the opening tag is closed
*/
public void writeAttribute(String attributeName) throws JspException {
if (currentState().isBlockTag()) {
throw new IllegalStateException("Cannot write attributes after opening tag is closed.");
}
this.writer.append(" ").append(attributeName);
}

/**
* Write an HTML attribute if the supplied value is not {@code null}
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