java - Spring mvc分页如何获取结果

Question

我昨天已经发了这个帖子..但是没有人回复..我正在使用 spring mvc 框架。

我想做如下图所示的分页:--

所以我已经做到了:--

    @RequestMapping(value = "/detailssection/id",method=RequestMethod.GET)
     public @ResponseBody  String showthedetails(Map<String, Object> map, HttpServletRequest request) throws IOException{

//I want to display 5 details per page

                    int recordsPerPage = 5; 

 //It will count total no of records(like 300 records are there)

  int totalnoOfrecords = viewService.TotalnoOfRecoredsbanglains1();

//If the totalnoOfrecords=300 then page noumber will be 300/5=60 that means 1,2....60           
int pagenumbers = (int) Math.ceil(totalnoofrecords * 1.0 / recordsPerPage);   

                         map.put("detail", new Detail());
                        map.put("noOfPages", pagenumbers);
                        map.put("detailList", viewService.viewDetails());



            return "detailssection";
        }

我的jsp页面是这样的:--

 <div id= "part1">

 <div id= "details">
        <p>${detail.description}</p>
   </div>


    </c:forEach>

  <%--For displaying Previous link except for the 1st page --%>

   <c:if test="${currentPage != 1}">
      <a href="/detailssection/id?pagenumber=${currentPage - 1}">Previous</a>
    </c:if>



    <%--For displaying Page numbers. 
    The when condition does not display a link for the current page--%>

            <c:forEach begin="1" end="${noOfPages}" var="i">
                <c:choose>
                    <c:when test="${currentPage eq i}">
                        ${i}
                    </c:when>
                    <c:otherwise>
                        <a href="/detailssection/id?pagenumber=${i}">${i}</a>
                    </c:otherwise>
                </c:choose>
            </c:forEach>


    <%--For displaying Next link --%>

   <c:if test="${currentPage lt noOfPages}">
        <a href="/detailssection/id?pagenumber=${currentPage + 1}">Next</a>
    </c:if>

</div>

但是我没有得到任何页码。它只显示“上一页”部分。它就像:-- 我做错了什么？jsp页面有什么问题吗？

Answer 1

让我们从头开始。

如果您的 requestScope 上有 map ，假设它是带有以下键的 MyMap:details、noOfPages code> 和 detailList，要通过键访问其值，语法如下:

<c:forEach begin="1" end="$MyMap['noOfPages']" var="i" varStatus="loop">
    <c:choose>
        <c:when test="${currentPage eq i}">
            ${i}
        </c:when>
        <c:otherwise>
            <a href="/detailssection/id?pagenumber=${loop.index}">${loop.index}</a>
        </c:otherwise>
    </c:choose>
</c:forEach>