需求：在工作中解决的一些问题感觉不够“优美”。所以把这些问题贴出来，希望有更好操作的大牛不吝赐教。

第一问：Freemarker模拟“三元表达式”功能

答： ${(orderpaydetail.loginViewList[0] = "390")?string('医疗保险','养老保险')}

第二问：Freemarker 得到前端字符串中英文分割的数字并遍历，格式如下：

A100B200C350D490E530F690G770H890

答：  <!-- 替换返回中的英文为“,”,方便后期将字符串转为集合 -->
            <#assign Source=(orderpaydetail.attributeItems['hth'])>
            <#assign FirstGrade=Source?replace('A', '', 'i')?replace('B', ',', 'i')?replace('C', ',', 'i')?replace('D', ',', 'i')?replace('E', ',', 'i')?replace('F', ',', 'i')>
            <#assign SecondGrade=FirstGrade?replace('G', ',', 'i')?replace('H', ',', 'i')?replace('I', ',', 'i')?replace('J', ',', 'i')?replace('K', ',', 'i')?replace('L', ',', 'i')>
            <#assign ThirdGrade=SecondGrade?replace('M', ',', 'i')?replace('N', ',', 'i')?replace('O', ',', 'i')?replace('P', ',', 'i')?replace('Q', ',', 'i')?replace('R', ',', 'i')>
            <#assign FourthGrade=ThirdGrade?replace('S', ',', 'i')?replace('T', ',', 'i')?replace('U', ',', 'i')?replace('V', ',', 'i')?replace('W', ',', 'i')?replace('X', ',', 'i')>
            <#assign FifthGrade=FourthGrade?replace('Y', ',', 'i')?replace('Z', ',', 'i')>

<select  id="payGrade">
                            <option value="0">请选择</option>
                                  <#list FifthGrade?split(",") as grade>
                                      <option   value="${grade}" >
                                       ${grade}元</option>
                                  </#list>

</select>

第三问：Freemarker遍历json数组

答： <#list [{"ysls":"2017122101","sfny":"201712"},{"ysls":"2017122234","sfny":"201734"}] as json> ${(json['ysls'])!''}  ${(json['sfny'])!''}</#list>