JSP分页，实体增、删、改、查（将查询结果全部返回，然后分页，适合小数据量）
1. 问题
做一个通用的增加、修改、查询、删除实体模块，主要是包含分页功能。用JSP实现。
2. 样式
3. 解决
下面是JSP列表分页页面代码，此代码不能通用，需要做出自己的修改后才能使用。
<%@ page contentType="text/html; charset=UTF-8"%> <%@page import="java.util.*, java.util.regex.Matcher, java.util.regex.Pattern, cn.jingdu.solr.Config"%> <% // 查询参数 request.setCharacterEncoding("UTF-8"); String word = request.getParameter("word"); if("请输入要查询的关键词……".equals(word)) { word = null; } // 如果有查询参数，需要对List做一下处理 List<String> negativeList = Config.getNegativeWords(); if(word != null && !"".equals(word)) { Pattern pattern = Pattern.compile(word); List<String> tempList = new ArrayList<String>(); for(String str: negativeList) { Matcher matcher = pattern.matcher(str); if(matcher.find()) { // 符合的输出 tempList.add(str); } } negativeList = tempList; } // 每页显示记录数 int pageSize = 12; // 总页数 int totalPages = negativeList.size()/pageSize; // 总页数取整 if(negativeList.size() > totalPages*pageSize) totalPages++; %> <HTML> <HEAD> <LINK rel="stylesheet" type="text/css" href="../css/list.css"> <SCRIPT type="text/javascript" src="../js/common.js"></SCRIPT> <SCRIPT type="text/javascript" src="../js/page.js"></SCRIPT> <SCRIPT language="JavaScript"> // 单击高亮代码 function setCurrent(obj) { var parent = obj.parentNode; for (var i = 0; i < parent.childNodes.length; i++) { parent.childNodes[i].className = "ltby"; } obj.className = "ltbysd"; } // 修改 function updateEntity(word) { js_callpage("negative.jsp?actionType=update&word=" + word,"_blank",300,50,300,300); } // 删除 function deleteEntity(word) { if(!confirm("您确认删除[" + word + "]吗？")) { return false; } js_callpage("negativeAction.jsp?actionType=delete&old_word=" + word,"_blank",300,50,300,300); } // 刷新查询，在修改、删除操作完成后调用 function refreshQuery(){ parent.refreshQuery(); } </SCRIPT> </HEAD> <BODY onload="firstPage();"> <DIV style="position:absolute;left:0px; top:0px;"> <TABLE width='100%' align='center' cellspacing='0' cellpadding='0'> <TR> <TD> <% if(negativeList.size() > 0){ for(int j=0; j<totalPages; j++){ %> <DIV id='page<%=(j+1)%>' style='display:none;'> <TABLE border="0" class='ltb' cellpadding="0" cellspacing="1" width="100%"> <TR class='lthd'> <TD width="20%" align="center" class='lthdtd'>序号</TD> <TD width="50%" align="center" class='lthdtd'>负面关键词</TD> <TD width="10%" align="center" class='lthdtd'>编辑</TD> <TD width="10%" align="center" class='lthdtd'>删除</TD> </TR> <% for(int i = j*pageSize; i < (j+1)*pageSize && i < negativeList.size(); i++){ String bgcolor=(i%2 == 0 )?"#FFFFFF":"#f0f0f0"; %> <TR class='ltby' onClick="setCurrent(this)"> <TD align="center" class='ltbytd'><%=(i+1)%></TD> <TD align="left" class='ltbytd'><%=negativeList.get(i)%></TD> <TD align="center" class='ltbytd'><A href="javascript: void updateEntity('<%=negativeList.get(i)%>');" title="编辑[<%=negativeList.get(i)%>]关键词"><IMG border="0" src="../images/edit.gif" width="10" height="10"></A> </TD> <TD align="center" class='ltbytd'><A href="javascript: void deleteEntity('<%=negativeList.get(i)%>');" title="删除[<%=negativeList.get(i)%>]关键词"><IMG border="0" src="../images/delete.gif" width="10" height="10"></A></TD> </TR> <% } %> </TABLE> </DIV> <% } }else{ %> <TABLE width="100%" align='left' cellspacing='1' class='ltb'> <TR class='lthd'> <TD width="20%" align="center" class='lthdtd'>序号</TD> <TD width="50%" align="center" class='lthdtd'>负面关键词</TD> <TD width="10%" align="center" class='lthdtd'>编辑</TD> <TD width="10%" align="center" class='lthdtd'>删除</TD> </TR> <TR class='ltby'> <TD colspan='4' align='center' class='warning'><FONT style="COLOR:red; FONT-SIZE:9pt">没有数据</FONT> </TD> </TR> </TABLE> <% } %> </TD> </TR> <TR> <TD align="right"> <DIV class="manu"> <SPAN id="prev"></SPAN> <% if(totalPages >= 1) { for(int i=1; i<=totalPages; i++) { out.println("<SPAN id=\"toPage" + i + "\"><A href=\"javascript: toAnyPage(" + i + ");\">" + i + "</A></SPAN>"); } } %> <SPAN id="next"></SPAN> </DIV> </TD> </TR> </TABLE> <INPUT type="hidden" name="totalPages" value="<%=totalPages%>"> <INPUT type="hidden" name="curPage" value="1"> <INPUT type="hidden" name="lastPage" value="0"> </DIV> </BODY> </HTML>
