jsp中用java代码拼接下拉选备选项及默认值【我】

<th id="TD_N_CERTIFICATION_TYPE" >证件类型：</th>
    <td >
        <select id="CERTIFICATION_TYPE" name="CERTIFICATION_TYPE" size="1" class="select156">
            <option value="">请选择</option>
            <%
                Map voMap = (Map) request.getAttribute("voMap");<!-- EL中的voMap，就是一个变量map -->
                List optionsList = (List)request.getAttribute("optionsList");<!-- 获取备选项集合，相当于EL的${optionsList}" -->
                if(optionsList != null && optionsList.size()>0) {
                    <!-- 遍历拼接备选项 -->
                    for(int i =0;i<optionsList.size();i++) {
                        Map mapType = (Map) optionsList.get(i);
                        String code = mapType.get("ATTR_VALUE_CODE").toString();
                        String name = (String)mapType.get("ATTR_VALUE_NAME");
                        String defaultValue = (String) voMap.get("CERTIFICATION_TYPE");
                        if (code.equals(defaultValue)) {<!-- 设置默认备选项为选中状态 -->
                        %>
                            <option value='<%=code%>' selected="selected">
                                <%=name%>
                            </option>
                        <%
                            } else {
                        %>
                            <option value='<%=code%>'>
                                <%=name%>
                            </option>
                        <%
                            }
                    }
                }
            %>
        </select>
    </td>