jquery - "A circular reference was detected while serializing an object of type ' 系统.Reflection.RuntimeModule '"

Question

这个问题已经有答案了:

A circular reference was detected while serializing an object of type 'SubSonic.Schema .DatabaseColumn'. (14 个回答)

已关闭 5 年前。

我正在尝试使用 jQuery 以 JSON 结果返回 MVC 模型的对象。我收到一条失败消息:

A circular reference was detected while serializing an object of type 'System.Reflection.RuntimeModule'

这是我的 Controller ，我将在其中返回 Json 结果

public ActionResult populateData(string application, string columns, string machine, string pages, string startDate, string endDate)
    {

        ErrorPage _objError = new ErrorPage();
        _objError.ErrorData = dbl.GetDataTable(DbConnectionString, Table, whereCondition, columns);


        //Column description: Name and Type    
        var columnlist = new Dictionary<string, System.Type>();
        foreach (System.Data.DataColumn column in _objError.ErrorData.Columns)
        {       
            var t = System.Type.GetType( column.DataType.FullName );
            columnlist.Add(column.ColumnName, t);  
        }

        _objError.ErrorColumns = columnlist;


        //DataSourceRequest result = _objError.ToDataSourceResult(request);

        if (_objError.ErrorData.Rows.Count > 0)
            Message = "Showing Error log for " + AppName + " . To Change the application or filtering options please select the appropriate application from Application Dropdown";
        else
            Message = "No errors found for " + AppName + " in last 24 hours.";


        return Json(_objError);
    }

这里我对 Controller 方法进行 Ajax 调用:

$.ajax({
        type: "POST",
        url: '@Url.Content("~/Common/PopulateData")',
        contentType: "application/json; charset=utf-8",
        dataType: 'json',
        data: JSON.stringify({ application: app, columns: columns, machine: machine, pages: pages, startDate: startDate, endDate: endDate }),
        success: function (data) {
            alert("Success");
        },
        error: function (error) {
            alert('error; ' + eval(error));
            alert('error; ' + error.responseText);
        }
    });

请帮助如何将 Model 类对象返回到 Ajax 调用后？

Answer 1

我们来寻求解决方案

我用下面的代码集修改了我的代码，它对我有用

public JsonResult populateData(string application, string columns, string machine, string pages, string startDate, string endDate)
    {
        ErrorPage _objError = new ErrorPage();
        var ErrorResult = _objError.GetErrorData(application, columns, machine, pages, startDate, endDate);


        var result = JsonConvert.SerializeObject(ErrorResult.ErrorData, Formatting.Indented,
                       new JsonSerializerSettings
                       {
                           ReferenceLoopHandling = ReferenceLoopHandling.Ignore
                       });

        return Json(result, JsonRequestBehavior.AllowGet);
    }

我们需要序列化对象，而不是直接发送 Model 对象。

谢谢。