1 for(int i=0;i<10;i++){
2        //内容
3 }

1 <s:bean name="org.apache.struts2.util.Counter" id="counter">
2    <s:param name="first" value="1" />  //起始值
3    <s:param name="last" value="10" />  //循环控制变量
4    <s:iterator>
5      counter:<s:property/>   //内容
6    </s:iterator>
7 </s:bean>

  1 package org.apache.struts2.util;
  2
  3 import java.io.Serializable;
  4
  5
  6 /**
  7 * A bean that can be used to keep track of a counter.
  8 * <p/>
  9 * Since it is an Iterator it can be used by the iterator tag
 10 *
 11 */
 12 public class Counter implements java.util.Iterator, Serializable {
 13
 14      private static final long serialVersionUID = 2796965884308060179L;
 15
 16      boolean wrap = false;
 17
 18      // Attributes ----------------------------------------------------
 19      long first = 1;
 20      long current = first;
 21      long interval = 1;
 22      long last = -1;
 23
 24
 25      public void setAdd(long addition) {
 26          current += addition;
 27      }
 28
 29      public void setCurrent(long current) {
 30          this.current = current;
 31      }
 32
 33      public long getCurrent() {
 34          return current;
 35      }
 36
 37      public void setFirst(long first) {
 38          this.first = first;
 39          current = first;
 40      }
 41
 42      public long getFirst() {
 43          return first;
 44      }
 45
 46      public void setInterval(long interval) {
 47          this.interval = interval;
 48      }
 49
 50      public long getInterval() {
 51          return interval;
 52      }
 53
 54      public void setLast(long last) {
 55          this.last = last;
 56      }
 57
 58      public long getLast() {
 59          return last;
 60      }
 61
 62      // Public --------------------------------------------------------
 63      public long getNext() {
 64          long next = current;
 65          current += interval;
 66
 67          if (wrap && (current > last)) {
 68              current -= ((1 + last) - first);
 69          }
 70
 71          return next;
 72      }
 73
 74      public long getPrevious() {
 75          current -= interval;
 76
 77          if (wrap && (current < first)) {
 78              current += (last - first + 1);
 79          }
 80
 81          return current;
 82      }
 83
 84      public void setWrap(boolean wrap) {
 85          this.wrap = wrap;
 86      }
 87
 88      public boolean isWrap() {
 89          return wrap;
 90      }
 91
 92      public boolean hasNext() {
 93          return ((last == -1) || wrap) ? true : (current <= last);
 94      }
 95
 96      public Object next() {
 97          return new Long(getNext());
 98      }
 99
100      public void remove() {
101          // Do nothing
102
103 　　}
104
105 }

<s:bean name="org.apache.struts2.util.Counter" id="counter"><s:param name="first" value="1" /><s:param name="last" value="#request.num" /><s:iterator><tr bgcolor="ffffff" align="center"><td>${rs.f_courseId}&nbsp;</td><td>${rs.f_coursename}&nbsp;</td><td>${rs.f_term}&nbsp;</td><td>${rs.f_week}&nbsp;</td><td>${rs.f_credit}&nbsp;</td><td>${rs.f_courseStart}&nbsp;</td><td>${rs.f_courseEnd}&nbsp;</td><td><a href="">查看</a> <a href="">删除</a></td></tr></s:iterator>
</s:bean>