求一个for循环

Question

我有一张表
create table book(
        id integer(5) primary key,
name varchar(15),
author varchar(10),
price integer(3),
publisher varchar(15)
);
在struts Action中得到全部的书：
         List<Book> book = dao.getAllBook();
        request.setAttribute("books", book);
在jsp页面中得到：
<table>
<c:forEach items="${requestScope.books}" var="book">
<tr>
<td>${book.name }</td>
</tr>
</c:forEach>
</table>
得到的应该是：
       书1
       书2
       书3
       书4
       书5
       书6
       书7
       书8
       .....
现在我想得到：
        书1   书2    书3
       书4   书5    书6
       书7   书8该怎么做啊？？？

Answer 1

用<%for(...){..}%>吧
简单

Answer 2

               <table width='100%'  height="226" border='0' cellspacing='0' cellpadding='5'>
                    <%if(imgList==null||imgList.size()<1){%>
                <tr><td align='center'>没有任何文件</td></tr>
                    <%}else{%>
                <tr align='center'>
                    <%
                    intRowCount=imgList.size();
            
                    //记算总页数 
                    intPageCount = (intRowCount+intPageSize-1) / intPageSize; 
    
                     //调整待显示的页码 
                    if(intPage >intPageCount) intPage = intPageCount;
                    
                          //显示记录数 
      int i=0;
      if(intPage<2){
       i=0;
      }else{
       i=intPageSize*(intPage-1);
      }
     while(i<intPageSize*intPage&&i<intRowCount){
  
         imgModel =(ImgBookModel) imgList.get(i);
 
                    %>
                    <td width='33%'><table align=center border=1  style='BORDER-COLLAPSE: collapse'  cellpadding=0 cellspacing=0  bordercolor='#CCCCCC'><tbody><td><a href="/pages/viewImg.jsp?id=<%=imgModel.getId()%>"><img alt=""  onmousewheel="return   bbimg(this)"  src='/smallpic/<%=imgModel.getPicUrl()%>' border='0' width='120' height='120'></a></td></tbody></table><br>
                    <%if(imgModel.getTitle().length()<=5){%>
                    <%=imgModel.getTitle()%>
                    <%}else{%>
                    <%=imgModel.getTitle().substring(0,5)%><%}%>"</a> | 浏览："<%=imgModel.getClick()%>"</td>
                          <%i++;
                          if(i%3==0){
                          %>
                          <tr>
                          <%}}}%>  
                </tr> 
                </table>  

Answer 3

  //翻页信息
  int intPageSize=0; //一页显示的记录数 
  int intRowCount=0; //记录总数 
  int intPageCount=0; //总页数 
  int intPage; //待显示页码 
  String strPage;
   
  //设置一页显示的记录数 
  intPageSize = 9; 
     
  //取得待显示页码 
  strPage = request.getParameter("page");   if(strPage==null||"".equalsIgnoreCase(strPage)){//表明没有page这一个参数，此时显示第一页数据 
  intPage = 1; 
  }else{//将字符串转换成整型 
  intPage = java.lang.Integer.parseInt(strPage); 
  if(intPage< 1){ 
  intPage = 1; 
  } 
  } 

Answer 4

可以这样：
<table> 
<c:forEach items="${requestScope.books}" var="book" varStatus="status"> 
<c:if test="{status%3==0}">
<tr> 
</c:if>
<td>${book.name } </td> 
<c:if test="{status%3==0}">
</tr> 
</c:if>
</c:forEach> 
</table> 

Answer 5

<table> 
<c:forEach items="${requestScope.books}" var="book" varStatus="status"> 
<c:if test="{status%3==0||status==1}">
<tr> 
</c:if>
<td>${book.name } </td> 
<c:if test="{status%3==0||status==1}">
</tr> 
</c:if>
</c:forEach> 
</table> 

Answer 6

贴两边都没贴对这回对了
<table> 
<c:forEach items="${requestScope.books}" var="book" varStatus="status"> 
<c:if test="${status%3==0||status==1}">
<tr> 
</c:if>
<td>${book.name } </td> 
<c:if test="${status%3==0||status==1}">
</tr> 
</c:if>
</c:forEach> 
</table> 

Answer 7

<table> 
   <%
      for(int i=0; i<booksList.size(); i++){
         Book book = (Book) booksList.get(i);
         if(i%3==1){  // 每行三个
             out.print("<tr>");
         }
         out.print("<td>");
         out.print(book.getName());
         out.print("</td>"); 
      }
   %>
</table> 

Answer 8

<table> 
<c:forEach items="${requestScope.books}" var="book"> 
<tr> 
<td>${book.name } </td> 
<c:set var="i" value="${i+1}"/>
<c:if test="${i%3==0}">
</tr><tr>
</c:if>
</tr> 
</c:forEach> 
</table>

Answer 9

<table>  
<c:if test="${not empty requestScope.books}">
<tr>  <c:forEach items="${requestScope.books}" var="book" varStatus="index">  
<td>${book.name }  </td>  
<c:set var="i" value="${index.count}"/>
<c:if test="${index.count %3==0}"> 
</tr> <tr>
</c:if> 
</c:forEach>  
<%for(int j=0;j<(3-i%3);j++){%>
<td>&nbsp;</td>
<%}%>
</tr>  
</c:if>
</table>

Answer 10

貌似应该这样. 是 循环 <td></td>. 而且不能忘记 总记录数 非 3 的整倍数的时候, 最后一行还要 补 &nbsp; 的. 
<table>   
<c:if test="${not empty requestScope.books}"> 
<tr>   <c:forEach items="${requestScope.books}" var="book" varStatus="index">   
<td>${book.name }   </td>   
<c:set var="i" value="${index.count}"/> 
<c:if test="${index.count %3==0}">  
</tr><tr> 
</c:if>  
</c:forEach>   
<%
  if(i%3 != 0){
  for(int j=0;j <(3-i%3);j++){%> 
  <td>&nbsp; </td> 
<%}}%> 
</tr>   
</c:if> 
</table>

Answer 11

这个调用status好像错了,我记得是status.count调用状态值,貌似这个值就跟FOR循环里的自己定义的I一样,而且好像从0开始的

Answer 12

<logic:present 
<logic:iterate 再来个<logic:empty  到3个一换行就行拉

Answer 13

<div>
<c:set value="0" var="i"></c:set>
<c:forEach items="${requestScope.books}" var="book">
<c:if test="${i%3==0}"><br></c:if>
<div>
${book.name }
</div>
<c:set value="${i+1}" var="i"></c:set>
</div>