c:forEach实现动态select标签
c:forEach实现动态select标签
<c:forEach>
标签是更加通用的标签,因为它迭代一个集合中的对象。
<c:forTokens>
标签通过指定分隔符将字符串分隔为一个数组然后迭代它们。
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JavaBean
public class SelectData { private String key; // 键 private String value; // 值 public SelectData(String key, String value) { super(); this.key = key; this.value = value; } public String getKey() { return key; } public void setKey(String key) { this.key = key; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } }
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Servlet
public class ServletDemo3 extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<SelectData> list = new ArrayList<SelectData>(); proList.add(new SelectData("1", "北京")); proList.add(new SelectData("2", "上海")); proList.add(new SelectData("3", "广州")); proList.add(new SelectData("4", "深圳")); proList.add(new SelectData("5", "河北")); proList.add(new SelectData("6", "河南")); proList.add(new SelectData("7", "山西")); proList.add(new SelectData("8", "山东")); proList.add(new SelectData("9", "江苏")); proList.add(new SelectData("10", "浙江")); req.setAttribute("proList",proList); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req,resp); } }
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前端核心代码
<select name="sel_Province">
<c:forEach items="${proList}" var="user" varStatus="status">
<option value="${user.key}">${list.value}</option>
</c:forEach>
</select>