Servlet中存入Request的Files集合，如何在Handlebar模板内迭代？

Since your fileMap is a key-value collection, Handlebars provides the built-in {{#each}} helper to iterate over objects (maps) just like JSP's <c:forEach>. Here's how you can replicate your JSP logic in Handlebars:

Example Code #

<select>
  {{#each Files}}
    <option value="{{@key}}">{{this}}</option>
  {{else}}
    <!-- Optional: Handle empty map case -->
    <option value="">No files available</option>
  {{/each}}
</select>

Key Details: #

• {{#each Files}}: Starts the iteration over your Files map (make sure this map is properly passed into your Handlebars template context from the Servlet).
• {{@key}}: References the current entry's key (equivalent to ${file.key} in JSP).
• {{this}}: References the current entry's value (equivalent to ${file.value} in JSP).
• The {{else}} block is optional but useful for displaying a fallback when the map is empty.

Just remember to ensure that your Servlet passes the fileMap into the Handlebars template context using the key "Files" (same as your request attribute name) so the template can access it.

内容的提问来源于stack exchange，提问作者Nabarun Dey