参考自官方文档,需要引入jquery.js,jquery.dataTables.js,dataTables.bootstrap.js(可选),
由于时间紧,省略了很多,所以总结份简化版的仅供参考。
1、直接加载,这个比较简单,如下
<div id="tid" class="col-sm-12 col-md-12"> <div id="secondtid" hidden="hidden"></div> </div>
jsp用了bootstrap的栅格,js如下
<script type="text/javascript"> function getgaoxinqu() { $('#secondtid').remove(); $("#tid").append( "<div id='secondtid' style='width: 100%;'><table id='table_id' class='table table-striped table-bordered table-hover no-footer dataTable display' ><thead><tr><th nowrap>id</th><th nowrap>高新区名称</th><th nowrap>地区</th><th nowrap>工商注册企业数</th><th nowrap>网址</th><th nowrap>工业总产值(千元)</th><th nowrap>工业增加值(千元)</th><th nowrap>主导产业</th><th nowrap>财政收入(万元)</th><th nowrap>财政支出(万元)</th></tr></thead><tbody></tbody></table></div>"); $.ajax({ url : '${contextPath}/mst/theme/otherOperatePlatformTheme.do?flag=gaoxinqu',// 跳转到 action data : { barName : '1' }, serverSide: true,//服务器处理 traditional : true, type : 'post', success : function(data) { var dataObj = eval(data); $('#table_id').DataTable( { data : dataObj, sScrollY: 600, sScrollX: '100%', columns : [ { data : 'id' },{ data : 'name' }, { data : 'dy' }, { data : 'gxqyy' }, { data : 'www' }, { data : 'gysum' }, { data : 'gyadd' }, { data : 'zdcy' } , { data : 'cztr' } , { data : 'czzc' } ], order:[[ 0, "asc" ]], language : { search : "在表格中搜索:", show : "显示", "sProcessing" : "处理中...", "sLengthMenu" : "显示 _MENU_ 项结果", "sZeroRecords" : "没有匹配结果", "sInfo" : "显示第 _START_ 至 _END_ 项结果,共 _TOTAL_ 项", "sInfoEmpty" : "显示第 0 至 0 项结果,共 0 项", "sInfoFiltered" : "(由 _MAX_ 项结果过滤)", "sInfoPostFix" : "", "sSearch" : "搜索:", "sUrl" : "", "sEmptyTable" : "表中数据为空", "sLoadingRecords" : "载入中...", "sInfoThousands" : ",", "oPaginate" : { "sFirst" : "首页", "sPrevious" : "上页", "sNext" : "下页", "sLast" : "末页" }, "oAria" : { "sSortAscending" : ": 以升序排列此列", "sSortDescending" : ": 以降序排列此列" } } }); showPage(); }, error : function() { alert("异常!"); } }); showPage();//高度调节 } </script>
后台传个json就行了,由于这个破项目表名都很奇葩凑合看吧。
List<GaoXinDistrict> gxlist=new ArrayList<GaoXinDistrict>(); String sql="select * from ODS10000060"; try { List<Map> list = oracledictionaryService.executeSqlToRecordMap(sql); for (Map map : list) { GaoXinDistrict gx=new GaoXinDistrict(); Object id= map.get("ID"); Object name = map.get("NAME"); Object JB = map.get("JB"); Object DY = map.get("DY"); Object YEAR = map.get("YEAR"); Object FZR = map.get("FZR"); Object TBR = map.get("TBR"); Object phone = map.get("PHONE"); Object EMAIL = map.get("EMAIL"); Object WWW = map.get("WWW"); Object GXQMJSUM = map.get("GXQMJSUM"); Object JCMJ = map.get("JCMJ"); Object GXQYY = map.get("GXQYY"); Object GYSUM = map.get("GYSUM"); Object GYADD = map.get("GYADD"); Object CZTR = map.get("CZTR"); Object CZZC = map.get("CZZC"); Object DEC = map.get("DEC"); Object ZDCY = map.get("ZDCY"); gx.setId(Integer.parseInt(String.valueOf(id))); gx.setName(name.toString()); gx.setJB(JB.toString()); gx.setDY(DY.toString()); gx.setYEAR(YEAR.toString()); gx.setFZR(FZR.toString()); gx.setTBR(TBR.toString()); gx.setPhone(phone.toString()); gx.setEMAIL(EMAIL.toString()); gx.setWWW(WWW.toString()); gx.setGXQMJSUM(GXQMJSUM.toString()); gx.setJCMJ(JCMJ.toString()); gx.setGXQYY(GXQYY.toString()); gx.setGYSUM(GYSUM.toString()); gx.setGYADD(GYADD.toString()); gx.setCZTR(CZTR.toString()); gx.setCZZC(CZZC.toString()); gx.setDEC(DEC.toString()); gx.setZDCY(ZDCY.toString()); gxlist.add(gx); } parseJSONResult(gxlist, response); } catch (Exception e) { e.printStackTrace(); }
2、延迟加载
由于老项目用的struts1,造成前台form接收参数有问题,所以直接用servlet接收
前端jsp如1直接加载一样,js如下
function initDatatables(){ /*var columns = new Array(); $("#listTable thead th").each(function(index, element) { var fieldName=$(element).attr("fieldName"); if(fieldName.indexOf('.')>0)fieldName=fieldName.substring(2); columns.push({"data":fieldName}); }); if($('#listTable').length<=0) return; //-- 列定义 var columnDefs = new Array(); $("#listTable thead th").each(function(index, element) { if($(element).attr("fieldType")!='VARCHAR'){ columnDefs.push({ "orderable": true, "searchable" : false, "targets": index }); } });*/ $('#listTable').DataTable( { "processing": true,//处理中显示 "serverSide": true,//服务器处理 "sScrollY": 300, "sScrollX": "100%", "columns":[{"data":"ID"},{"data":"YEAR"},{"data":"REGION"},{"data":"GYZCZ"},{"data":"QYS"}], /*"columns":columns,*/ /*"columnDefs":columnDefs,*/ // "bInfo": false, // "bPaginate": false, // "bFilter":false,/servlet/ComplexInquireServlet // "bLengthChange": false, "ajax": { "url": urlContextPath+"/mst/DatatablesLazyLoadServlet?flag=details", "type": "POST", "data": function ( d ) { var queryForm = document.queryConditionForm; d['fieldCode'] = 'ID,YEAR,REGION,GYZCZ,QYS'; d['tableCode'] = 'ODS10000030'; //表名 } }, "oLanguage": { "search" : "在表格中搜索:", "show" : "显示", "sProcessing" : "处理中...", "sLengthMenu" : "显示 _MENU_ 项结果", "sZeroRecords" : "没有匹配结果", "sInfo" : "显示第 _START_ 至 _END_ 项结果,共 _TOTAL_ 项", "sInfoEmpty" : "显示第 0 至 0 项结果,共 0 项", "sInfoFiltered" : "(由 _MAX_ 项结果过滤)", "sInfoPostFix" : "", "sSearch" : "搜索:", "sUrl" : "", "sEmptyTable" : "表中数据为空", "sLoadingRecords" : "载入中...", "sInfoThousands" : ",", "oPaginate" : { "sFirst" : "首页", "sPrevious" : "上页", "sNext" : "下页", "sLast" : "末页" }, "oAria" : { "sSortAscending" : ": 以升序排列此列", "sSortDescending" : ": 以降序排列此列" } } } ); showPage(); } function showQueryTable(){ //建table $('#secondtid').remove(); $("#tid").append( "<div id='secondtid' style='width: 100%;'>" + "<table id='listTable' class='table table-striped table-bordered table-hover no-footer dataTable display' ><thead><tr>" + "<th nowrap>id</th>" + "<th nowrap>年份</th>" + "<th nowrap>地区</th>" + "<th nowrap>工业总产值(万元)</th>" + "<th nowrap>企业数(家)</th>" + "</tr></thead><tbody></tbody></table>" + "</div>"); //创建表头 /*$.ajax({ url : urlContextPath+'/mst/DatatablesLazyLoadServlet?flag=titles',// 跳转到 action data : { index : '' }, type : 'post', success : function(data) { var dataObj = eval(data); }, error : function() { alert("异常!"); } });*/ //填充数据 initDatatables(); }
注:这个已经是简化版的了,表头可以用另一个ajax传过来,这里省略直接写死了。
下面是后台部分
public class DatatablesLazyLoad extends HttpServlet{ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.process(request, response); } /** * datatables 延迟加载 数据加载,flag标注details表示注入数据,titles表示注入标题。 * @param request * @param response */ private void process(HttpServletRequest request, HttpServletResponse response) { ServletContext servletContext=request.getSession().getServletContext(); WebApplicationContext wac =WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext); DictionaryServiceImpl ds=(DictionaryServiceImpl)wac.getBean("oracledictionaryService"); String flag = request.getParameter("flag"); String tableCode = request.getParameter("tableCode"); String fieldCode = request.getParameter("fieldCode"); if(flag==null)return; if(flag.equals("titles")){ }else if(flag.equals("details")){ String draw = request.getParameter("draw"); String start = request.getParameter("start"); String length = request.getParameter("length"); StringBuilder sql = new StringBuilder("select "); List titles = this.getTitles(tableCode,fieldCode,ds); for(int i=0;i<titles.size();i++){ Map record = (Map)titles.get(i); sql.append(" ").append(record.get("FIELDNAME")).append(", "); } if(sql.lastIndexOf(",")>0) sql.deleteCharAt(sql.lastIndexOf(",")); sql.append(" from ").append(tableCode); sql.append(" where 1=1 "); String filterSql = getFilterSql(titles,request); Integer totalCount =ds.getSqlRecordCount("select count(*) from (" + sql.toString()+ ") tmp"); Integer filterCount = ds.getSqlRecordCount("select count(*) from (" + sql.toString()+filterSql+ ") tmp"); String[] strings = fieldCode.split(","); String orderSql = getOrderSql(strings,request); sql.append(filterSql); sql.append(orderSql); List<Map> lt = ds.executeSqlToRecordMap(sql.toString(),Integer.valueOf(start),Integer.valueOf(length)); Map result = new LinkedHashMap(); result.put("draw", draw); result.put("recordsTotal", totalCount);//记录总行数 result.put("recordsFiltered", filterCount);//过滤的行数 int count=Integer.valueOf(length)+1; for(Map r : lt){ r.put("DT_RowId", r.get("id"));//设置行主键 Map rowDate = new LinkedHashMap();//row data rowDate.putAll(r); r.put("DT_RowData", rowDate); r.put("countInx", count); count++; } result.put("data", lt); try { convertListToJson(result, response); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } /** * 得到所有的列标题名称 * @return */ private List getTitles(String tableCode,String fieldCode,DictionaryServiceImpl ds){ /*StringBuilder sql = new StringBuilder("select UPPER(ODS_DF_NAME) fieldName,ODS_DF_CN_NAME fieldLabel,ODS_DF_CODE fieldCode,UPPER(ODS_DF_DATA_TYPE) fieldType from ODS.ODS_DF_INFO_REG "); sql.append(" where ODS_TB_CODE= '"+tableCode+"' "); List<Map> list = ds.executeSqlToRecordMap(sql.toString()); return list;*/ StringBuilder sql = new StringBuilder("select UPPER(ODS_DF_NAME) fieldName,ODS_DF_CN_NAME fieldLabel,ODS_DF_CODE fieldCode,UPPER(ODS_DF_DATA_TYPE) fieldType from ODS.ODS_DF_INFO_REG "); sql.append(" where 1=1 "); sql.append(" and ODS_TB_CODE = '"+tableCode+"'"); sql.append(" and ODS_DF_NAME in ("); String[] tmp = fieldCode.split(","); StringBuilder ids = new StringBuilder(); for(String t : tmp){ if(StringUtils.isEmpty(t)) continue; ids.append("'").append(t).append("',"); } if(ids.lastIndexOf(",")>0) ids.deleteCharAt(ids.lastIndexOf(",")); sql.append(ids); sql.append(")"); List lt = ds.executeSqlToRecordMap(sql.toString()); return lt; } /** * 前台搜索 * @param fieldLt * @return */ private String getFilterSql(List<Map> fieldLt,HttpServletRequest request) { StringBuilder filterSql = new StringBuilder(" and ( "); String searchKey = "search[value]"; String searchValue = request.getParameter(searchKey); System.out.println(searchValue); if(StringUtils.isEmpty(searchValue)) return ""; List<String> filterDetail = new ArrayList(); for(int i=0;i<fieldLt.size();i++){ Map field = fieldLt.get(i); if(field.get("FIELDTYPE").equals("VARCHAR")){ String subKey = "columns["+i+"][searchable]"; if("true".equals(request.getParameter(subKey))){ String fieldName = field.get("FIELDNAME").toString(); String subSql = fieldName + " like '%"+searchValue+"%'"; filterDetail.add(subSql); } } } if(filterDetail.size()==0) return ""; boolean f = true; for(String subSql : filterDetail){ if(f){ f= false; filterSql.append(subSql); }else{ filterSql.append(" OR ").append(subSql); } } filterSql.append(")"); return filterSql.toString(); } /** * 排序 * @param fieldLt * @return */ private String getOrderSql(String[] titles,HttpServletRequest request){ StringBuilder orderSql = new StringBuilder(" order by "); String indexKey = "order[0][column]"; String dirKey = "order[0][dir]"; Integer columnIndex = Integer.valueOf(request.getParameter(indexKey)); String dir = request.getParameter(dirKey); if(columnIndex<=titles.length){ orderSql.append(titles[columnIndex]).append(" ").append(dir); return orderSql.toString(); } return ""; } public void convertListToJson(Map map,HttpServletResponse response)throws Exception{ JSONArray json = JSONArray.fromObject(map); response.setHeader("Cache-Control", "no-cache"); response.setContentType("text/html; charset=GBK"); PrintWriter writer; writer = response.getWriter(); writer.write(json.get(0).toString()); writer.close(); } }
总结,做的比较急,也没好好整理下直接贴出来,因为也不难,肯定有地方写的不好,仅供参考。
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时间: 2024-09-10 11:21:17