jquery datatable服务器端操作的问题

Question

程序从后台读取数据后分页、查找等功能都不能用了
代码如下 
html
 <table cellpadding="0" cellspacing="0" border="0" class="stdtable" id="dyntable">
  <colgroup>
                        <col class="con0" style="width: 4%" />
                        <col class="con1" />
                        <col class="con0" />
                        <col class="con1" />
                        <col class="con0" />
                        </colgroup>
                    <thead>
                        <tr>    
                            <th class="head0">编号</th>
                            <th class="head1">用户名</th>
                            <th class="head0">性别</th>
                            <th class="head1">备注</th>
                            <th class="head0">分组</th>
                            <th class="head1">关注时间</th>
                            <th class="head0">最近访问</th>
                        </tr>
                    </thead>
                    <tfoot>
                        <tr>
                            <th class="head0">编号</th>
                            <th class="head1">用户名</th>
                            <th class="head0">性别</th>
                            <th class="head1">备注</th>
                            <th class="head0">分组</th>
                            <th class="head1">关注时间</th>
                            <th class="head0">最近访问</th>
                        </tr>
                    </tfoot>
      <tbody>
      </tbody>
</table>js===============================================================
 jQuery(document).ready(function() {
   jQuery('#dyntable').dataTable({
     "processing": true,
         "serverSide": true,
            "lengthMenu": [[10, 25, 50, -1], [10, 25, 50, "所有"]],
        "bLengthChange": true, 
     "ajax": "../../../data.php",
            "bStateSave" :false,
       "iDisplayLength" : 10,// 每页显示行数
             "sPaginationType" : "full_numbers",
                "oLanguage": {
      "sUrl": "cn.txt"
     },
     "aoColumns": [
      { "data": "index" },

                         { "data": "nickname" },

                         { "data": "sex" },                         { "data": "re" },                         { "data": "groupid" },                         { "data": "subscribe_time" },                         { "data": "recent" }
     ]
           
});
    });
后台===============================================================
include("includes/json_encode_ex.php");
include("includes/database.php");
$db = new database();
$db->database_connection();
$sql  = "SELECT * FROM T_WechatUserInfo";
$dd = $db->database_operation($sql);
$db->database_close();
$sum =count($dd);
$data=array(          "draw"=>2,       "iTotalRecords"=>$sum,          "iTotalDisplayRecords"=> 10,          "data"=>$dd,      );$temp = new json_encode_ex();
echo $temp->JSON($data);
现在能把服务器端的数据全部显示到浏览器上，但是无法分页，我指定一页只能显示10条数据但还是会把所有数据全部显示出来

Answer 1

分页的处理是通过SQL语句实现的，你后台代码没有分页的功能。分页方法网上很多，比如
http://tech.163.com/05/1226/08/25SSNRL20009159K.html
http://blog.sina.com.cn/s/blog_8231283801018h8n.html

Answer 2

把bServerSide配置去掉，否则你需要在服务器端分页返回指定页数的数据，datatable不会使用客户端分页

Answer 3

举个栗子
function initList() {
    $("#datatable").dataTable({
        "pagingType": "simple_numbers",//设置分页控件的模式  
        "searching": false,//屏蔽datatales的查询框  
        "aLengthMenu":[10],//设置一页展示10条记录  
        "bLengthChange": true,//屏蔽tables的一页展示多少条记录的下拉列表  
        "sAjaxSource": "project_projectManage", // post请求方法
        "sServerMethod": "POST",             
        "destroy":true,
        "ordering" :false, //禁用排序
        "serverSide": true,//打开后台分页  
        "fnServerParams": function (aoData) {
            aoData.push(
            { "name": "scode_pro", "value": $('#scode_pro').val() },
            { "name": "sname_pro", "value": $('#sname_pro').val() },
            { "name": "sname_usr", "value": $('#sadviser_pro').val()},
               { "name": "nstatus_pro", "value": $('#nstatus_pro option:selected').val() });
        },
        "aLengthMenu": [[20,50, 100], [20,50,100]],
        "aoColumns": [
                      {"data": "scode_pro","sClass":"table_left"},
                      {"data": "sname_pro","sClass":"table_left"},
                      {"data": "sname_usr","sClass":"table_left"},
                      {"data": "proState"}
                      
                      ],
                      
        "columnDefs": [        
                      {"targets": [4],
                       "data": "sname_pro",
                       "render": function(data, type, full) {
                     if(full.proState == '进行中'){
                     return "<td class='content-line-td' width='15%'><a href=\"#\"  style='width: 50px;' onclick=\"modify('"+full.nid_pro+"');\">修改</a>&nbsp;"+
                            "<a href=\"#\"  style='height: 16px; line-height: initial;'  onclick=\"del('"+full.nid_pro+"','"+full.sname_pro+"');\">  删除</a>&nbsp;"+    
                            "<a href=\"#\"  style='height: 16px; line-height: initial;'  onclick=\"endProject('"+full.nid_pro+"','"+full.sname_pro+"');\">  结束</a>&nbsp;"+
                             "</td>";
                     }else{
                     return "<td class='content-line-td' width='15%'><a href=\"#\"  style='width: 50px;' onclick=\"startProject('"+full.nid_pro+"','"+full.sname_pro+"');\">再开始</a>&nbsp;"+                        
                             "</td>";
                     }
                           },"sClass":"table_left"
                       },
                 ],  
           "oLanguage":{  
                "sLengthMenu": "每页显示 _MENU_ 条记录",     
                           "sZeroRecords": "没有检索到数据",     
                           "sInfo": "显示 _START_-_END_ 条数据,共有 _TOTAL_ 条记录。",     
                           "sInfoEmtpy": "没有数据",     
                           "sProcessing": "正在加载数据...",     
                           "oPaginate":   
                           {     
                               "sFirst": "首页",     
                               "sPrevious": "上一页",     
                               "sNext": "下一页",     
                               "sLast": "尾页"    
                           }     
           },  
        "fnServerData": function (sUrl, aoData, fnCallback) {
            $.ajax({
                "url": sUrl,
                "data" :aoData,
                "success": fnCallback,
                "dataType": "json",
                "cache": false,
                "success" : function(resp) {  
                    fnCallback(resp);  
                    $("#datatable td").each(function(i){
                      //给td设置title属性,并且设置td的完整值.给title属性.
                      $(this).attr("title",$(this).text());
             });
                }  
            });
        }
    });
};
-------------------------------------------
  aoData.push 里面是检索的参数
aoColumns页面显示的数据
后台接收的分页参数如下

Answer 4

sEcho = Integer.valueOf(request.getParameter("sEcho"));
iDisplayLength = Integer.valueOf(request.getParameter("iDisplayLength"));
iDisplayStart = Integer.valueOf(request.getParameter("iDisplayStart"));
sql += " ORDER BY `nid_sup`  limit "+iDisplayStart+","+iDisplayLength+"  "; 翻页
------------------------------------------------
返回的json格式如下
arraySize -->检索出来的数据。arraySize   数据大小
public static StringBuffer JsonUtils(List<?> objcet, int arraySize,String jsonArray,int sEcho){
StringBuffer json = new StringBuffer();
json.append("{");
json.append("\"sEcho\"" + ":" + sEcho + "");
json.append(",");
json.append("\"iTotalRecords\"" + ":" + arraySize + "");
json.append(",");
json.append("\"iTotalDisplayRecords\"" + ":" + arraySize + "");
json.append(",");
json.append("\"aaData\":");
json.append("[");
if (objcet != null && objcet.size() > 0) {
for (Object obj : objcet) {
JSONArray object = JSONArray.fromObject(obj);
String replactobj = object.toString().replaceAll("^.*\\[", "")
.replaceAll("].*", "");
json.append(replactobj);
json.append(",");
}
} else {
json.append("}");
}
json.setCharAt(json.length() - 1, ']');
json.append("}");
return json;

}
----------------------
觉得有用给分哦