从.JSP文件中的动作类调用方法，该方法在Struts 2中获取Enum参数

Question

I'm using the Struts 2 framework. I have an action class and a JSP page. The class has the following two methods:

public String foo(String s)
{
    return s + s;
}

public String bar(SomeEnumClass EnumType)
{
    switch(EnumType)
    {
         //Return a string depending on the type. 
    }
}

I can call the first method using this in my .JSP file:

<s:property value="%{foo('some string here')}"/>

and it will correctly return to my .JSP:

some string heresome string here

I'm now trying to figure out how to call the second method. How can I let Struts 2 know the "string" EnumTypeA should be typecasted to the corresponding EnumType ?

<s:property value="%{bar('EnumTypeA')}"/>

Struts offers a lot of built-in type conversion, but string to enum doesn't appear to be one of them?

Answer 1

您可以使用以下表示法从JSP访问枚举：

<s:property value="bar(@package.SomeEnumClass@EnumTypeA)"/>