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List Iteration

Use the <c:forEach> tag to iterate over arrays and collections.

  • Specify the loop variable using the var attribute.

  • Use the loop variable as you would any other single EL variable.

  • The items attribute is used to indicate what to iterate over, and the name used inside the ${ } is what we added in the servlet.

  • Iterator, List, Set, and arrays are all allowed datatypes.

  • In the example below, the collection students has been added to the model.
<c:forEach var="s" items="${students}">
<tr>
  <td>${s.id}</td>
  <td>${s.name}</td>
</tr>
</c:forEach>

We can give var any valid variable name.

<ul>
<c:forEach var="x" items="${students}">
  <li>${x.name}</li>
</c:forEach>
</ul>

Drill

TagLibraries/com.example.taglibraries.drills.servlets.StockServletList

  • Get all stocks from the StockProvider and add them to the request using req.setAttribute(key, value).

TagLibraries/src/main/webapp/WEB-INF/listStocks.jsp * Iterate through the Stocks and print all data in a table row.

(Solution: TagLibraries/src/main/webapp/WEB-INF/solutions/listStocks.jsp, com.example.taglibraries.solutions.servlets.StockServletList)

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