在struts2中使用<s:radio>标签总是报错

    <s:radio list="{'已婚','未婚'}" name="married" label="是否已婚"></s:radio>
    <s:radio label="Answer" name="yourAnswer" list="#{'1':'Yes','2':'No'}" value="2" />

下面这一行的1后面的冒号报错，运行也会出问题，但是上面那一行的就没问题

• 报错信息：

'!=', '%', '&&', '(', '*', '+', '+=', '-', '/', <, <=, '==', '>', '>=', and, div, eq, ge, gt, le, lt, mod, ne, or, '||' or '}' expected, got ':' Dynamic expression (${} syntax) is required here less... (Ctrl+F1) 
Inspection info: Reports using dynamic expressions where deferred ones are required.