如何使用1到31之间的值填充selectOneMenu列表

Question

I need to create a selectOneMenu list for the day of birth. I need something like this:

for(int i=1;i<32;i++)
system.out.println(i);

How can I achieve this?

Answer 1

What you need is to use f:selectItems . There is also a good wiki page at StackOverflow.

And by the way, to select a date, you could use a date picker of a rich component library like PrimeFaces or RichFaces.

Answer 2

One way of doing that is creating a list in the backing bean with the values and return them in view using selectIems. For example:

@ManagedBean
public class ManagedBean{
    private ArrayList list;


    @PostConstruct
    public void init(){
        for(int i=1; i<32;i++)
            list.add(i);
    }

    //getter and setter
}

in the view:

<h:selectOneMenu value="#{managedBean.someValue}">
     <f:selectItems value="#{managedBean.list}" var="day" itemValue="#{day}" itemLabel=#{day}/>
</h:selectOneMenu>

Answer 3

Without backing bean:

<h:selectOneMenu value="#{...}"  >              
    <c:forEach var="i" begin="1" end="31">
        <f:selectItem itemLabel="#{i}" itemValue="#{i}" />       
    </c:forEach>
</h:selectOneMenu>