java低级版的分页功能：只是备忘

自己实现了一个分页的小功能，特此记录以备忘：

action中添加上：

        int currentPage = 1;
        int startRow=0;
        int pageSize = 50;
        if(request.getParameter("currentPage")!=null){
            currentPage=Integer.parseInt(request.getParameter("currentPage"));
        }
        if(request.getParameter("pageSize")!=null){
            pageSize=Integer.parseInt(request.getParameter("pageSize"));
        }
        startRow=(currentPage-1)*pageSize;

//查询代码实现……

Integer totalRows=value.length;
        request.setAttribute("currentPage", currentPage);
        request.setAttribute("totalRows", totalRows);
        request.setAttribute("totalPages", (totalRows-1)/pageSize+1);
        request.setAttribute("pageSize", pageSize);

2.jsp部分实现

//处理js
function goPage(page,me,total){
            var curr = $("#currentPage").val();;
            if("first"==me){
                $("#currentPage").val(1);
            }else if("next"==me){
                $("#currentPage").val(page);
            }else if("previous"==me){
                $("#currentPage").val(page);
            }else if("last"==me){
                $("#currentPage").val(page);
            }
            document.forms[0].submit()
        }

//显示
<table class='pager-table' border='0' cellpadding='0' cellspacing='0' width='100%'  align='center' >
                <tr class='pager-tr'>
                    <td class='pager-td'align='right'>
                    <input type=hidden name=pageMethod value=pager>
                    <input type=hidden id=totalPages name="totalPages" value='${totalPages }'>
                    第${currentPage }页&nbsp;共${totalPages }页&nbsp;每页${pageSize }条&nbsp;共${totalRows }条&nbsp; 
                        <a href="#" onclick="goPage(1,'first',${totalPages})">首页</a>&nbsp;
                        <a href="#" <c:if test="${currentPage>=2}">onclick="goPage(${currentPage-1},'next',${totalPages})"</c:if>>上一页</a>&nbsp;
                        <a href="#" <c:if test="${currentPage<totalPages}">onclick="goPage(${currentPage+1},'previous',${totalPages})"</c:if>>下一页</a>&nbsp;
                        <a href="#" onclick="goPage(${totalPages},'last',${totalPages})">尾页</a>
                            &nbsp;转到<select class='pager-select' id="currentPage" name=currentPage  size='1'  onchange=javascript:document.forms[0].submit()>
                            <c:forEach begin="1" end="${totalPages}" var="i" step="1">
                                <option <c:if test="${currentPage==i }">selected=selected</c:if> value="${i }">${i }</option>
                            </c:forEach>
                             </select>
                            &nbsp;每页
                            <select  id="pageSize" name='pageSize' size='1'  onchange="javascript:document.forms[0].submit()">
                            <option value="50" <c:if test="${pageSize==50 }">selected="selected"</c:if>>50</option>
                            <option value="100" <c:if test="${pageSize==100 }">selected="selected"</c:if>>100</option>
                            <option value="150" <c:if test="${pageSize==150 }">selected="selected"</c:if>>150</option>
                            <option value="200" <c:if test="${pageSize==200 }">selected="selected"</c:if>>200</option>
                            </select>条
                    </td>
                </tr>
            </table>