关于dataTable 服务器端json字符串的传递

Question

使用struts2自带的json result机制前台取不到值
[code="java"]
public class DataTablesAction {
private String DTJson;
public String toList(){
return "success";
}
public String list(){
try {
HashMap queryConditionMap = new HashMap();
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
response.setCharacterEncoding("utf-8");
DataTablesParameter dtp =DtpUtils.getDTParameter(request);
ResultListBean rsBean = new ResultListBean();
rsBean.setStartRecord(dtp.getStartRecord());
rsBean.setDisplayRecord(dtp.getDisplayRecord());
DataDAO dao=new DataDAO();
rsBean=dao.findAll(rsBean, queryConditionMap, dtp);
DTJson = DtpUtils.toJsonForDTS(rsBean.getResultList(),rsBean.getTotalRecord(),Integer.parseInt(dtp.getSEcho()));

        return "success";
    } catch (Exception e) {
        e.printStackTrace();
        return "error";
    }
}
public String getDTJson() {
    return DTJson;
}
public void setDTJson(String dTJson) {
    DTJson = dTJson;
}

}

[/code]
[code="xml"]
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">




/WEB-INF/jsp/welcome.jsp


/WEB-INF/jsp/menu.jsp


/WEB-INF/jsp/showDataTables.jsp



DTJson




[/code]
改为response.out就可以获取到
[code="java"]
public String list(){
try {
HashMap queryConditionMap = new HashMap();
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
response.setCharacterEncoding("utf-8");
DataTablesParameter dtp =DtpUtils.getDTParameter(request);
ResultListBean rsBean = new ResultListBean();
rsBean.setStartRecord(dtp.getStartRecord());
rsBean.setDisplayRecord(dtp.getDisplayRecord());
DataDAO dao=new DataDAO();
rsBean=dao.findAll(rsBean, queryConditionMap, dtp);
response.getWriter().print(DtpUtils.toJsonForDTS(rsBean.getResultList(),rsBean.getTotalRecord(),Integer.parseInt(dtp.getSEcho())));
return null;
} catch (Exception e) {
e.printStackTrace();
return "error";
}
}
[/code]
[code="xml"]
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">




/WEB-INF/jsp/welcome.jsp


/WEB-INF/jsp/menu.jsp


/WEB-INF/jsp/showDataTables.jsp




[/code]
页面脚本：
[code="javascript"]
$(document).ready(function(){
TableTools.DEFAULTS.aButtons = [];
var dt=$("#dataList").dataTable({
//"sScrollY": "400px",
"bScrollCollapse": true,
"bPaginate": true,
"bJQueryUI": true,
"sPaginationType": "full_numbers",
"aLengthMenu": [[10, 25, 50, -1], [10, 25, 50, "全部"]],

"bLengthChange":true,

"oLanguage": {
"sUrl": "include/dataTables_cn.txt"
},
"bSort":true,
"aaSorting": [[ 1, "asc" ]],
"sDom": '<"H"Tfrl>t<"F"ip>',

"bProcessing": true,
"bServerSide": true,

"sAjaxSource": "getListForDataTables.action?rand="+Math.random(),
"fnServerData" : function(sSource, aoData, fnCallback) {
$.ajax({

"type" : "post",
"url" : sSource,

"dataType" : "json",
"data" : aoData,

"success" : function(resp) {
fnCallback(resp);
$("#selectAll").removeAttr("checked");

                }
            });
         },
         "aoColumns": [
              {"sName":"all","sClass":"center",
               "bSearchable": false,"bSortable":false,
                "fnRender":function(oObj){
                    return "<input type='checkbox' name='isCheck' value='"+oObj.aData[1]+"'/>";
                }
              },
              { "sName": "wpbh", "sClass": "center"},
              { "sName": "wpmc", "sClass": "center"},
              { "sName": "rkrq", "sClass": "center"},
              { "sName": "dj", "sClass": "center"},
              { "sName": "kcsl", "sClass": "center"},
              { "sName": "lyr", "sClass": "center"},
              { "sName": "operation", "sClass": "center",
                "bSearchable": false,
                "bSortable":false,
                "fnRender": function (oObj) {
                    return "<a href= 'javascript:;' onclick='modify(\""+oObj.aData[1]+"\")'><img src='images/edit.png'/>修改</a>&nbsp;<a href= 'javascript:;' onclick='deleteRow(\""+oObj.aData[1]+"\")'><img src='images/delete.png'/>删除</a>";
                }
              }
          ]
        });
        $("#selectAll").click(function(){
            if($(this).attr("checked")=="checked"){
                $("input[name='isCheck']").attr("checked","checked");
            }else{
                $("input[name='isCheck']").removeAttr("checked");
            }
        });
    });

[/code]
[code="html"]

	物品编号	物品名称	入库时间	单价(元)	库存数量	领用人	操作

[/code]
不明白原因是什么？
附件是源码，哪位有空劳烦给看一下

Answer 1

可以参考result type=“json”的配置使用方法

http://kingxss.iteye.com/blog/1622455