Java代码 <s:bean name= "org.apache.struts2.util.Counter" id= "counter" >
<s:param name="first" value= "1" />
<s:param name="last" value= "10" />
<s:iterator>
counter:<s:property value="current-1" />
</s:iterator>
</s:bean>
其中first属性指定循环起始值,last指定循环终止值,其它相关属性可以查看org.apache.struts2.util.Counter类源码。在下面迭代器中输入循环的当前值,即:current-1
Counter类源码
package org.apache.struts2.util;
import java.io.Serializable;
public class Counter implements java.util.Iterator, Serializable {
private static final long serialVersionUID = 2796965884308060179L;
boolean wrap = false ;
// Attributes —————————————————-
long first = 1 ;
long current = first;
long interval = 1 ;
long last = - 1 ;
public void setAdd( long addition) {
current += addition;
}
public void setCurrent( long current) {
this .current = current;
}
public long getCurrent() {
return current;
}
public void setFirst( long first) {
this .first = first;
current = first;
}
public long getFirst() {
return first;
}
public void setInterval( long interval) {
this .interval = interval;
}
public long getInterval() {
return interval;
}
public void setLast( long last) {
this .last = last;
}
public long getLast() {
return last;
}
// Public ——————————————————–
public long getNext() {
long next = current;
current += interval;
if (wrap && (current > last)) {
current -= ((1 + last) - first);
}
return next;
}
public long getPrevious() {
current -= interval;
if (wrap && (current < first)) {
current += (last - first + 1 );
}
return current;
}
public void setWrap( boolean wrap) {
this .wrap = wrap;
}
public boolean isWrap() {
return wrap;
}
public boolean hasNext() {
return ((last == - 1 ) || wrap) ? true : (current <= last);
}
public Object next() {
return new Long(getNext());
}
public void remove() {
// Do nothing
}
}