--------------------------------------------------------------------------------
<c:forEach items="${requestScope.categorys}" var="category" varStatus="num">
<tr>
<td>${num.count}</td>
<td>${category.ctype}</td>
<td>
我不明白var="category" 这里定义的category是ArryList吗？
如果是ArryList 为什么能够直接category.ctype!
如果不是 为什么???
- Java code
public List<Category> QueryCategory(String ctype) { List<Category> categorys = new ArrayList<Category>(); Connection conn = null; PreparedStatement pre = null; String sql = "SELECT * FROM category WHERE ctype = ? "; ResultSet rs = null; try { conn = JdbcUtils.getConnection(); pre = conn.prepareStatement(sql); pre.setString(1,ctype); rs = pre.executeQuery(); while(rs.next()) { Category category = new Category(); category.setCtype(rs.getString("ctype")); category.setChot(rs.getBoolean("chot")); category.setCid(rs.getInt("cid")); Account account = new Account(); account.setAid(rs.getInt("aid")); category.setAccount(account); categorys.add(category); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { JdbcUtils.free(rs,pre,conn); } return categorys.size() == 0 ? null : categorys; }- Java code
<body> <form action="/t31/CategorySer" method="post"> 查询:<input type="text" name="ctype" /><br /> <input type="submit" value="提交" /> <input type="hidden" value="queryCategory" name="status" /> </form> <c:if test="${requestScope.categorys!=null}"> <table> <tr> <td>编号</td> <td>类别名</td> <td>是否热点</td> <td>所属客服</td> </tr> <c:forEach items="${requestScope.categorys}" var="category" varStatus="num"> <tr> <td>${num.count}</td> <td>${category.ctype}</td> <td> <c:choose> <c:when test="${category.chot=='true'}"> <input type="checkbox" checked="checked" value="true" disabled="disabled" /> </c:when> <c:otherwise> <input type="checkbox" value="true" disabled="disabled" /> </c:otherwise> </c:choose> </td> <td>${category.account.alogin}</td> </tr> </c:forEach> </table> </c:if> </body></html>------解决方案--------------------------------------------------------
categorys是你list里面的对象名
调用categorys.属性就能得到值了