前端：
var recs = $(nameGrid).wafGrid("getAllRowData");
param : {
                                    
                                     recs :  shr.toJSON(recs),
                                     multiTableIndex : nameGrid,
                                     solutionId : $("#solutionId").val(),
                                     objId :  $("#objId").val()
 
                            },

后端：

String recs = request.getParameter("recs");              
JSONArray ja = JSONArray.fromObject(recs);