从Iterable <map <string，object =“”>＆gt;中删除一个字符在java中

Question

在我使用的代码中，

 @*@if (!string.IsNullOrEmpty(Model))
    {*@
@(Html.Kendo().Grid<Guardian.Core.Model.ViewModels.MRAprofileGridNew>()
                        .TableHtmlAttributes(new { @class = "table table-condensed Patient-Grid" })
                      .Name(gridId)
                .ToolBar(tb =>
                {
                    tb.Excel().HtmlAttributes(new { @class = "btn btn-danger btn-xs pull-right " });

                })

.Columns(columns =>
                        {
                            //    foreach (var ColumnName in Model)
                            //    {

                            //        columns.Bound(gl => gl.DBColumnvalue).Title(ColumnName.DBColumnName).Width(200).Filterable(false).Sortable(false);
                            //    }


                            columns.Bound(team => team.DBColumnName).Title("Team Name");
                            columns.Bound(team => team.DBColumnvalue);

                            //foreach (var tem in Model)
                            //{
                            //    string blabal = tem.DBColumnName.ToString();
                            //    columns.Template(gl => gl.DBColumnvalue[0]).Title(blabal).Width(100);
                            //}

                            //columns.Bound(p => p.FirstName).Title("First Name").Width(90);
                            //columns.Bound(p => p.LastName).Title("Last Name").Width(90);
                            //columns.Bound(p => p.HICN).Title("HICN").Width(70).HtmlAttributes(new { @class = "text text-left" });
                            //columns.Bound(p => p.year).Title("Year").Width(50).HtmlAttributes(new { @class = "text text-right" });
                            //columns.Bound(p => p.ProviderName).Title("Provider Name").Width(200);
                            //columns.Bound(p => p.ACOID).Title("ACOID").Width(50).HtmlAttributes(new { @class = "text text-left" });
                            //columns.Bound(p => p.V22MedicalRiskScore).Width(10).HtmlAttributes(new { @class = "text text-right" }).HeaderTemplate("<span class='kh-Grid-tooltip' data-toggle='tooltip' data-placement='top' title='CMS-HCC V22 Risk Score'>CMS-HCC V22 RS</span>");
                            //columns.Bound(p => p.RxRiskScore).Width(20).HtmlAttributes(new { @class = "text text-right" }).HeaderTemplate("<span class='kh-Grid-tooltip' data-toggle='tooltip' data-placement='top' title='RxRiskScore'>RxRscore</span>");
                        })
          .Excel(excel => excel
                        .FileName("")
                        .Filterable(true)
                        .AllPages(true))

                        .Filterable()
                        .Pageable()
                        .Sortable()
                                .Events(events => events.DataBound("onDataBoundPreservePatientGrid"))
                        .Filterable()
                        .DataSource(dataSource => dataSource
                            .Ajax()
                            .PageSize(10)
                                                            .Read(read => read.Action("RiskScorePatientData", "Reports", new { ACOName = Convert.ToString(ViewBag.CurrAcoName) }))
                                    .ServerOperation(false)
                        )

                         .Resizable(resize => resize.Columns(true))
                         .Reorderable(reorder => reorder.Columns(true))
)
@*}*@

，输出值为

@RequestMapping(value = "/getBlueprintById", method = RequestMethod.GET)
public @ResponseBody BlueprintsMessage find(@FormDataParam("id") String id, final HttpServletResponse response) {
    ResponseStatus status = null;
    Long blueprintId = Long.parseLong(id);
    response.setHeader("Cache-Control", "no-cache");
    Iterable<Map<String, Object>> entity = null;
    try {
        entity = blueprintService.getBlueprintById(blueprintId);

        status = new ResponseStatus(ResponseStatusCode.STATUS_OK, "SUCCESS");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return new BlueprintsMessage(status, entity);
}

我想删除输出中的{ "blueprint": { "relation": [ { "id": 1271, "relationParam": [ { "value": "{\"canaries\":\"1\",\"canary_watch_time\":\"30000-180000\",\"update_watch_time\":\"30000-180000\",\"max_in_flight\":\"4\"}" } ] } ] } } ，输出与\类型相同。保存到数据库中的值，我只是从DB获取值。