Javascript 如何在C#中反序列化多个JSON对象？

我正在将多个JSON对象从前端传递到C#后端-如何将它们反序列化到C#类中，以便稍后在应用程序中使用它们？在进一步讨论之前，我必须使用JS

FormData

对象、

contentType:false

和

processData:false

，因为我还需要通过这个AJAX调用传递文件；这与这个问题完全无关。以下是我目前的代码：

前端-按下提交按钮时调用该功能

submitData: function () {
    var formCollection = this.appModel.get('formCollection').models;
    var formData = new FormData();
    var formJson = [];
    $.each(formCollection, function (index, form) {
        var tempJson = {};
        if (form) {
            tempJson['id'] = form.get('id');
            tempJson['number'] = form.get('number');
            tempJson['name'] = form.get('name');
            tempJson['attachments'] = form.get('attachments');
            formJson.push(tempJson);
        }
    });
    console.log(JSON.stringify(formJson));
    formData.append('formJson', JSON.stringify(formJson));
    $.ajax({
        type: "POST",
        url: '/NMISProduct/Test',
        contentType: false,
        processData: false,
        data: formData,
        success: function (result) {
            console.log(result);
        }
    });
}

[{"id":1,"number":null,"name":"Investment Portfolio Statement","attachments":null},{"id":2,"number":"61-0227","name":"WMC Signature Portfolio Agreement","attachments":null},{"id":3,"number":"61-1126","name":"WMC Signature Choice Agreement","attachments":null},{"id":4,"number":"61-1162","name":"WMC Signature Annuities Agreement","attachments":null},{"id":5,"number":"61-1205","name":"WMC Signature Managed Accounts Client Agreement","attachments":null}]

[HttpPost]
public async Task<JsonResult> Test()
{
    Debug.WriteLine(Request.Params["formJson"]);
    var forms = JsonConvert.DeserializeObject<Form>(Request.Params["formJson"]);
    Debug.WriteLine(forms);
    try
    {
        var srNumber = GetSRNumber();
        foreach (string file in Request.Files)
        {
            var fileContent = Request.Files[file];
            Debug.WriteLine(ReadFileInputStream(fileContent));
            if (fileContent != null && fileContent.ContentLength > 0)
            {
                // get a stream
                var stream = fileContent.InputStream;
                // and optionally write the file to disk
                //var fileName = Path.GetFileName(file);
                var fileName = fileContent.FileName;
                var path = Path.Combine(Server.MapPath("~/App_Data/"), fileName);
                using (var fileStream = System.IO.File.Create(path))
                {
                    stream.CopyTo(fileStream);
                }
            }
        }
    }
    catch (Exception)
    {
        return Json("Upload failed");
    }
    return Json("File uploaded successfully");
}

public class Form
{
    public int id { get; set; }
    public string number { get; set; }
    public string name { get; set; }
    public Form attachments { get; set; }
    public byte[] fileAsBytes { get; set; }
}

JSON.stringized正在传递的数据

submitData: function () {
    var formCollection = this.appModel.get('formCollection').models;
    var formData = new FormData();
    var formJson = [];
    $.each(formCollection, function (index, form) {
        var tempJson = {};
        if (form) {
            tempJson['id'] = form.get('id');
            tempJson['number'] = form.get('number');
            tempJson['name'] = form.get('name');
            tempJson['attachments'] = form.get('attachments');
            formJson.push(tempJson);
        }
    });
    console.log(JSON.stringify(formJson));
    formData.append('formJson', JSON.stringify(formJson));
    $.ajax({
        type: "POST",
        url: '/NMISProduct/Test',
        contentType: false,
        processData: false,
        data: formData,
        success: function (result) {
            console.log(result);
        }
    });
}

[{"id":1,"number":null,"name":"Investment Portfolio Statement","attachments":null},{"id":2,"number":"61-0227","name":"WMC Signature Portfolio Agreement","attachments":null},{"id":3,"number":"61-1126","name":"WMC Signature Choice Agreement","attachments":null},{"id":4,"number":"61-1162","name":"WMC Signature Annuities Agreement","attachments":null},{"id":5,"number":"61-1205","name":"WMC Signature Managed Accounts Client Agreement","attachments":null}]

[HttpPost]
public async Task<JsonResult> Test()
{
    Debug.WriteLine(Request.Params["formJson"]);
    var forms = JsonConvert.DeserializeObject<Form>(Request.Params["formJson"]);
    Debug.WriteLine(forms);
    try
    {
        var srNumber = GetSRNumber();
        foreach (string file in Request.Files)
        {
            var fileContent = Request.Files[file];
            Debug.WriteLine(ReadFileInputStream(fileContent));
            if (fileContent != null && fileContent.ContentLength > 0)
            {
                // get a stream
                var stream = fileContent.InputStream;
                // and optionally write the file to disk
                //var fileName = Path.GetFileName(file);
                var fileName = fileContent.FileName;
                var path = Path.Combine(Server.MapPath("~/App_Data/"), fileName);
                using (var fileStream = System.IO.File.Create(path))
                {
                    stream.CopyTo(fileStream);
                }
            }
        }
    }
    catch (Exception)
    {
        return Json("Upload failed");
    }
    return Json("File uploaded successfully");
}

public class Form
{
    public int id { get; set; }
    public string number { get; set; }
    public string name { get; set; }
    public Form attachments { get; set; }
    public byte[] fileAsBytes { get; set; }
}

C#MVC 5后端

submitData: function () {
    var formCollection = this.appModel.get('formCollection').models;
    var formData = new FormData();
    var formJson = [];
    $.each(formCollection, function (index, form) {
        var tempJson = {};
        if (form) {
            tempJson['id'] = form.get('id');
            tempJson['number'] = form.get('number');
            tempJson['name'] = form.get('name');
            tempJson['attachments'] = form.get('attachments');
            formJson.push(tempJson);
        }
    });
    console.log(JSON.stringify(formJson));
    formData.append('formJson', JSON.stringify(formJson));
    $.ajax({
        type: "POST",
        url: '/NMISProduct/Test',
        contentType: false,
        processData: false,
        data: formData,
        success: function (result) {
            console.log(result);
        }
    });
}

[{"id":1,"number":null,"name":"Investment Portfolio Statement","attachments":null},{"id":2,"number":"61-0227","name":"WMC Signature Portfolio Agreement","attachments":null},{"id":3,"number":"61-1126","name":"WMC Signature Choice Agreement","attachments":null},{"id":4,"number":"61-1162","name":"WMC Signature Annuities Agreement","attachments":null},{"id":5,"number":"61-1205","name":"WMC Signature Managed Accounts Client Agreement","attachments":null}]

[HttpPost]
public async Task<JsonResult> Test()
{
    Debug.WriteLine(Request.Params["formJson"]);
    var forms = JsonConvert.DeserializeObject<Form>(Request.Params["formJson"]);
    Debug.WriteLine(forms);
    try
    {
        var srNumber = GetSRNumber();
        foreach (string file in Request.Files)
        {
            var fileContent = Request.Files[file];
            Debug.WriteLine(ReadFileInputStream(fileContent));
            if (fileContent != null && fileContent.ContentLength > 0)
            {
                // get a stream
                var stream = fileContent.InputStream;
                // and optionally write the file to disk
                //var fileName = Path.GetFileName(file);
                var fileName = fileContent.FileName;
                var path = Path.Combine(Server.MapPath("~/App_Data/"), fileName);
                using (var fileStream = System.IO.File.Create(path))
                {
                    stream.CopyTo(fileStream);
                }
            }
        }
    }
    catch (Exception)
    {
        return Json("Upload failed");
    }
    return Json("File uploaded successfully");
}

public class Form
{
    public int id { get; set; }
    public string number { get; set; }
    public string name { get; set; }
    public Form attachments { get; set; }
    public byte[] fileAsBytes { get; set; }
}

[HttpPost]
公共异步任务测试（）
{
Debug.WriteLine（Request.Params[“formJson”]）；
var forms=JsonConvert.DeserializeObject（Request.Params[“formJson”]）；
Debug.WriteLine（表单）；
尝试
{
var srNumber=GetSRNumber（）；
foreach（Request.Files中的字符串文件）
{
var fileContent=Request.Files[file]；
WriteLine（ReadFileInputStream（fileContent））；
if（fileContent！=null&&fileContent.ContentLength>0）
{
//得到一条小溪
var stream=fileContent.InputStream；
//并且可以选择将文件写入磁盘
//var fileName=Path.GetFileName（文件）；
var fileName=fileContent.fileName；
var path=path.Combine（Server.MapPath（“~/App\u Data/”），文件名）；
使用（var fileStream=System.IO.File.Create（path））
{
CopyTo（fileStream）；
}
}
}
}
捕获（例外）
{
返回Json（“上传失败”）；
}
返回Json（“文件上传成功”）；
}
公开课表格
{
公共int id{get；set；}
公共字符串编号{get；set；}
公共字符串名称{get；set；}
公共表单附件{get；set；}
公共字节[]fileAsBytes{get；set；}
}

---

我做了研究，发现了几个Stackoverflow问题，这些问题说明了如何将一个JSON对象序列化到一个C#类中——但是，我需要将多个JSON对象序列化到一个

列表中。我该怎么做？我在发布的代码中做错了什么？
您试图在此处反序列化为单个表单：

var forms = JsonConvert.DeserializeObject<Form>(Request.Params["formJson"]);

var forms=JsonConvert.DeserializeObject（Request.Params[“formJson]”）；

只需将其更改为：

var forms = JsonConvert.DeserializeObject<List<Form>>(Request.Params["formJson"]);

var forms=JsonConvert.DeserializeObject（Request.Params[“formJson]”）；

然后，您应该能够以正常的方式使用
表单
——对表单进行迭代、计数等

[HttpPost]
public async Task<JsonResult> Test(List<Form> forms)
{
    // your code here
}

内部

if (form)