`
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foreach: varStatus,count 
	<c:forEach items="${fileList}" varStatus="index"
							var="fileList" >
							<tr class="td_tr2">
							<td class="tableRow" height="40">
								附件:
							</td>
							<td class="tableRow" colspan="3" align="left">
									<span id="${index.count}"></span>
							<script type="text/javascript">
									var file='${fileList[1]}';
									var a=file.split("//");
									document.getElementById('${index.count}').innerText=a[1];
							</script>
									<a href="#" onclick="download('${fileList[1]}');"  >下载</a>
							</td>
						</tr>
						</c:forEach>
面试题 
public class ConvertArray {


	
	public static void main(String[] args) {
		// 对换数组
		String[][] a = new String[][]{{"1","2"},{"3","4"},{"5","6"}};
		String[][] b = new String[][]{{"7","8"},{"9","0"},{"1","2"}};
		String[][] c=new String[3][2];
		 System.out.print(b.length+" ");
		  for(int i=0;i<3;i++){
		   for(int j=0;j<2;j++){
		 
		    c[i][j] = b[i][j];
		    b[i][j] = a[i][j];
		    a[i][j] = c[i][j];
		    
		    //System.out.print(b[i][j]+" ");
		   }
		  }
		
		
		int[][] d=new int[][]{{1,2,3},
				{4,5,6},
				{7,8,9}}; 
		ConvertArray e=new ConvertArray();
		e.convert90( d);

		  
		 }
	
	/**
	 * int[][]{{1,2,3},
				{4,5,6},
				{7,8,9}}; 
				转为
	 * int[][]{{7,4,1},
				{8,5,2},
				{9,6,3}}; 
				
	 * @param args
	 */
	public void  convert90(int[][] a){
		
		
		int[][] b=new int[3][3];
		
		for (int i=0;i<b.length;i++){
		  for (int j=0;j<b[i].length;j++)		  {
		 //关建点
		   b[j][2-i] = a[i][j]; 
		  }
		  }
		
		for (int i=0;i<3;i++){
		for (int j=0;j<3;j++)
		{
			System.out.print(b[i][j]+" ");
		}
		}


	}


	}
keydown 
在页面需要控制位置加入onkeydown事件调用onkeydown = “return bodyvalidate(event,'All')”方法，return 返回条件你的事件是否成功。 
配合还得用onload事件聚焦此位置onload=“this.focus();” 
Tab ：keyCode == 9。Enter：keyCode == 13。Backspace：keyCode == 8。
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