Question

代码如下：

1）实体类：

public partial class EnergeticalComplex : TrackableBaseObject, IWithDbAffiliateFieldBlockField
{
    private ICollection<Cell> _cells;
    private ICollection<Document> _documents;

    public int? AffiliateId { get; set; }
    public virtual Affiliate Affiliate { get; set; }

    public int? FieldBlockId { get; set; }
    [AutoQueryRoot]
    public virtual FieldBlock FieldBlock { get; set; }

    public int? FieldId { get; set; }
    [AutoQueryRoot]
    public virtual Field Field { get; set; }

    [NotNull]
    [AutoQueryRoot]
    public virtual ICollection<Cell> Cells
    {
        get { return _cells ?? (_cells = new List<Cell>().WithLock(SyncRoot)); }
    }

    [NotNull]
    [TrackableRelation]
    public virtual ICollection<Document> Documents
    {
        get { return _documents ?? (_documents = new List<Document>().WithLock(SyncRoot)); }
    }
}

2）在控制器中：

public JsonResult ComboBoxBalanse(int fieldId)
{
    List<EnergeticalComplex> eComplex;
    using (var c = _contextFactory.CreateContext())
    {
        var eComplexesSet = c.Set(c.GetType()
            .EntityTypes()
            .First(t => typeof(IEnergeticalComplex).IsAssignableFrom(t)));
        eComplex = eComplexesSet
            .Cast<EnergeticalComplex>()
            .Where(ec => ec.Field.Id == fieldId && !ec.Name.Contains("KTP"))
            .ToList();
    }

    ViewData["EnergeticalComplexList"] = eComplex;
    ViewData["fieldId"] = fieldId;

    return Json(eComplex, JsonRequestBehavior.AllowGet);
}

3）在JavaScript模块中：

function onClickShowButton() {
    var selectBoxField = $("#divFieldsComboBox").dxSelectBox("instance");
    var indField = selectBoxField.option("value");

    $.ajax({
        contentType: "application/json; charset=utf-8",
        type: 'POST',
        url: '/LostEnergyCalculation/ComboBoxBalanse',
        dataType: 'json',
        data: "{ fieldId: " + indField + " }"
    }).done(function (data) {
        alert(JSON.stringify(data));
    });
}

程序流程在.done（）之后不会进入块。

Answer 1

看起来你正在使用具有更多类成员变量的实体类！在这种情况下，由于'eComplex'对象中的循环引用，可能存在JSon序列化问题。为了防止这种情况，在没有所有子类成员变量的情况下声明新类，或者使用condition_a(1)仅使用必需元素。即在你的控制器

__call__

如何使用jQuery ajax调用将数据转换为MVC 5 app中的Json？

1 个答案: