将表单的数据提交到 java Set

Submitting form#39;s data to a java Set(将表单的数据提交到 java Set)

问题描述

是否可以在Struts2的action中将表单的数据提交给java Set?

Is it possible to submit a form's data to a java Set in an action of Struts2?

动作代码:

class TestAction extends ActionSupport{

 private Set<Integer> mySet = new LinkedHashSet<Integer>();

 public TestAction(){
 }

 public String test(){

  someMethod(mySet);

 }

  ... Getters/Setters ...

}

表格代码:

<form action="test.action" >
 <input name="mySet[0]" />
 <input name="mySet[1]" />
 <input name="mySet[2]" />
 <submit />
</form>

推荐答案

Set 只是一个集合，Struts2 内部支持任何类型的集合.但是对于这种类型的集合，您不能在 OGNL 表达式中使用索引.试试

The Set is just a collection, and Struts2 has support for any type of collections internally. But for this type of collection you can't use indexes in your OGNL expressions. Try

<form action="test.action" >
 <input name="mySet" />
 <input name="mySet" />
 <input name="mySet" />
 <s:submit />
</form>

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