感悟：但是不建议使用这种方法，按照MVC框架的思想 ，应该把业务更多放在后台。前台尽量只进行数据展示。

 

转自：http://blog.csdn.net/guandajian/article/details/7334756

 

在struts2及webwork中要实现如：

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

 

还是需要一些技巧的，我在做分页条的时候，要输出页码，怪了，用迭代器不行的，看了一下struts2的文档及例子也没发现用计数器的地方，偶然看了一下bea标签，哦，原来如此....

1 
     
      2    
        //起始值3    
        //循环控制变量4    
      
       5      counter:
          //内容6    
      7 
     

 

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

干脆把源码贴出来吧！

-----------------------------------------------------------------------------------------------------------------------------

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 * 
  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 nothing102 103 　　}104 105 }

 

    

 

//项目中的应用

           
            
            
                                                  ${rs.f_courseId}                         ${rs.f_coursename}                         ${rs.f_term}                         ${rs.f_week}                         ${rs.f_credit}                         ${rs.f_courseStart}                         ${rs.f_courseEnd}                         
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