var data = $(_self._datagridId).jqGrid('getRowData');
data = JSON.stringify(data);
ajax({
  url: ****,
  data: data:data,
  type:'post',
  dataType:'json',
success: function(r){
}

})

String jsonData = ServletRequestUtils.getStringParameter(request,"data"，"");
//获取对象数组
List<YourObject> yourObjects = JsonHelper.getInstance().readValue(jsonData),dataFormat,new TypeReference<List<YourObject>>(){});
//获取单独对象的话
YourObject yourObject = JsonHelper.getInstance().readValue(jsonData),dataFormat,new TypeReference<YourObject>(){});