jquery dataTable loads data in the background and paging

<script src="static/ace/js/jquery-2.0.3.min.js"></script>

<script src="static/ace/js/jquery.dataTables.min.js"></script> 
<script src="static/ace/js/jquery.dataTables.bootstrap.js"></script>

<table id="sample-table-2" class="table table-striped table-bordered table-hover"> 
    <thead> 
      <tr> 
        <th class="center"><label> 
            <input type="checkbox" class="ace" /> 
            <span class="lbl"></span> 
          </label> 
        </th> 
        <th>名称</th> 
        <th>apiKey</th> 
        <th>secretKey</th> 
        <th><i class="icon-time bigger-110 hidden-480"></i> 创建时间</th> 
        <th class="hidden-480">Status</th> 
        <th>操作</th> 
      </tr> 
    </thead> 
 
  </table>

<script type="text/javascript"> 
  jQuery(function($) { 
 
    //初始化table 
    var oTable1 = $(&#39;#sample-table-2&#39;) 
        .dataTable( 
            { 
              "bPaginate" : true,//分页工具条显示 
              //"sPaginationType" : "full_numbers",//分页工具条样式 
              "bStateSave" : true, //是否打开客户端状态记录功能,此功能在ajax刷新纪录的时候不会将个性化设定回复为初始化状态  
              "bScrollCollapse" : true, //当显示的数据不足以支撑表格的默认的高度 
              "bLengthChange" : true, //每页显示的记录数 
              "bFilter" : false, //搜索栏 
              "bSort" : true, //是否支持排序功能 
              "bInfo" : true, //显示表格信息 
              "bAutoWidth" : true, //自适应宽度 
              "bJQueryUI" : false,//是否开启主题 
              "bDestroy" : true, 
              "bProcessing" : true, //开启读取服务器数据时显示正在加载中……特别是大数据量的时候，开启此功能比较好 
              "bServerSide" : true,//服务器处理分页，默认是false，需要服务器处理，必须true 
              "sAjaxDataProp" : "aData",//是服务器分页的标志，必须有  
              "sAjaxSource" : "${basePath}pushEntity/getTableData",//通过ajax实现分页的url路径。  
              "aoColumns" : [//初始化要显示的列 
                  { 
                    "mDataProp" : "id",//获取列数据，跟服务器返回字段一致 
                    "sClass" : "center",//显示样式 
                    "mRender" : function(data, type, full) {//返回自定义的样式 
                      return "<label><input type=&#39;checkbox&#39; class=&#39;ace&#39; /><span class=&#39;lbl&#39;></span></label>" 
                    } 
                  }, 
                  { 
                    "mDataProp" : "appName" 
                  }, 
                  { 
                    "mDataProp" : "apiKey" 
                  }, 
                  { 
                    "mDataProp" : "secretKey" 
                  }, 
                  { 
                    "mDataProp" : "createTime", 
                    "mRender" : function(data, type, full) { 
                      return new Date(data)//处理时间显示 
                      .toLocaleString(); 
                    } 
                  }, 
                  { 
                    "mDataProp" : "createTime", 
                    "mRender" : function(data, type, full) { 
                      return "<span class=&#39;label label-sm label-info arrowed arrowed-righ&#39;>Sold</span>" 
                    } 
                  }, 
                  { 
                    "mDataProp" : "createTime", 
                    "mRender" : function(data, type, full) { 
                      return "<p class=&#39;visible-md visible-lg hidden-sm hidden-xs action-buttons&#39;><a class=&#39;blue&#39; href=&#39;#&#39;><i class=&#39;icon-zoom-in bigger-130&#39;></i></a><a class=&#39;green&#39; href=&#39;#&#39;><i class=&#39;icon-pencil bigger-130&#39;></i></a><a class=&#39;red&#39; href=&#39;#&#39;><i class=&#39;icon-trash bigger-130&#39;></i></a></p>" 
                    } 
                  } ], 
              "aoColumnDefs" : [ {//用来设置列一些特殊列的属性 
                "bSortable" : false, 
                "aTargets" : [ 0 ] 
              //第一列不排序 
              }, { 
                "bSortable" : false, 
                "aTargets" : [ 5 ] 
              }, { 
                "bSortable" : false, 
                "aTargets" : [ 6 ] 
              } ], 
              "oLanguage" : {//语言设置 
                "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" 
                } 
              } 
            }); 
 
    //全选 
    $(&#39;table th input:checkbox&#39;).on( 
        &#39;click&#39;, 
        function() { 
          var that = this; 
          $(this).closest(&#39;table&#39;).find( 
              &#39;tr > td:first-child input:checkbox&#39;).each( 
              function() { 
                this.checked = that.checked; 
                $(this).closest(&#39;tr&#39;).toggleClass(&#39;selected&#39;); 
              }); 
 
        }); 
 
  }); 
</script>

   // 获取前端过来的参数,下面三个参数是 dataTable默认的，不要随便更改 
    Integer sEcho = Integer.valueOf(params.get("sEcho"));// 记录操作的次数 每次加1 
    Integer iDisplayStart = Integer.valueOf(params.get("iDisplayStart"));// 起始 
    Integer iDisplayLength = Integer.valueOf(params.get("iDisplayLength"));// 每页显示的size 
 
    Map<String, Object> map = new HashMap<String, Object>(); 
    try { 
      // 查询数据,分页的话我这边使用的是 PageHelper，这边不介绍了 
      PagedResult<PushEntity> list = pushEntityService.findByUserId( 
          pushUser.getId(), iDisplayStart, iDisplayLength); 
 
      // 为操作次数加1，必须这样做 
      int initEcho = sEcho + 1;

  //返回参数也是固定的 
      map.put("sEcho", initEcho); 
      map.put("iTotalRecords", list.getTotal());//数据总条数 
      map.put("iTotalDisplayRecords", list.getTotal());//显示的条数 
      map.put("aData", list.getDataList());//数据集合 
    } catch (Exception e) { 
      e.printStackTrace(); 
    } 
 
    return map;