用el表达式怎么取 hashmap的值？（通过键取值）

Question

[code="html"]



/c:if
${li.value }
/c:forEach
[/code]

我是想在checkbox的value里放入指定的值。这个值是从hashmap里面取的 。 根据键
可是这样写会报错 。 我知道 在el表达式里hash可以直接 .value .key 但是我要根据 key 来取值怎么弄呢 ？
谢谢 指点一下啊。。。
[b]问题补充：[/b]
JasperException: /select/result.jsp(78,104) "${li.["aii"] }" contains invalid expression(s): javax.servlet.jsp.el.ELException: Encountered "[", expected one of []

JasperException: /select/result.jsp(78,104) "${hash.["aii"] }" contains invalid expression(s): javax.servlet.jsp.el.ELException: Encountered "[", expected one of []

JasperException: /select/result.jsp(78,104) "${hash.[aii] }" contains invalid expression(s): javax.servlet.jsp.el.ELException: Encountered "[", expected one of []

JasperException: /select/result.jsp(78,104) "${hash.['aii'] }" contains invalid expression(s): javax.servlet.jsp.el.ELException: Encountered "[", expected one of []

JasperException: /select/result.jsp(78,104) "${li.['aii'] }" contains invalid expression(s): javax.servlet.jsp.el.ELException: Encountered "[", expected one of []

[b]问题补充：[/b]
不好意思 方括号 [] 好像不行。。。我都试过了。。

Answer 1

错误中显示你的用法是[code="java"]${li.["aii"] }[/code],没有中间的点的,这么写[code="java"]${li['aii']}[/code]