Question

我在将我的JSON数据发布回我的MVC 4项目中的api控制器时遇到问题。这是我的javascript：

 self.saveInvestment = function () {
        var investmentdata = ko.mapping.toJSON( { "InvestmentSummary": self.InvestmentSummary } );

        $.ajax({
            url: "../api/investment/",
            type: 'POST',
            contentType: 'application/json; charset=utf-8',
            data: investmentdata,
            success: function () {
                alert('hi');
            }
        });

    };

这是我的控制器代码：

[HttpPost]
        public void Post([FromBody]InvestmentSummary val)
        {
            string blah;
            if (val.InvestmentDetails[0] != null)
                blah = val.InvestmentDetails[0].Cost.ToString();

        }

这是来自fiddler的标题信息：

application/json; charset=UTF-8
http://localhost:1961
http://localhost:1961/Investment
X-Requested-With: XMLHttpRequest

POST http://localhost:1961/api/investment/ HTTP/1.1
Host: localhost:1961
Connection: keep-alive
Content-Length: 2470
Origin: http://localhost:1961
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11
Content-Type: application/json; charset=UTF-8
Accept: */*
Referer: http://localhost:1961/Investment
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

{"InvestmentSummary":{"InvestmentDetails":[{"Cost":"11","FairValue":0,"Tranches":[{"IDTranche":null.......

JSON格式正确，我用JSON Lint进行了双重检查。当我调试我的应用程序时，在我的控制器中，“val”中没有数据。我究竟做错了什么？？谢谢！

编辑：这是我对InvestmentSummary的类定义：

    public class InvestmentSummary : TransactionSummary
    {
        public InvestmentSummary()
        {
            this.InvestmentDetails = new List<InvestmentDetail>();
        }

        public List<InvestmentDetail> InvestmentDetails { get; set; }
    }

我认为我的问题是我的JSON正在使用InvestmentDetails，但我的类名是InvestmentDetail？有人，请帮忙吗？感谢

第二次修改 * 我的完整JSON具有以下结构：

var init = {
        InvestmentSummary: {
            InvestmentDetails: [],
            IDTransactionSummary:null,
            TxnParameter: {},
            TxnDate: "",
            Fund: {},
            PortfolioCompany: {}
        }
    };

在tpeczek的帮助下，我能够阅读InvestmentDetails。但是现在我如何获得剩余的JSON？在我的javascript中，JSON是正确构建的，当它到达我的控制器时，只有InvestmentDetails存在。 InvestmentSummary的所有其他孩子都不见了！感谢

Answer 1

首先，您不应该将对象包装到JavaScript中的另一个对象中：

 self.saveInvestment = function () {
        var investmentdata = ko.mapping.toJSON(self.InvestmentSummary);

        $.ajax({
            url: "../api/investment/",
            type: 'POST',
            contentType: 'application/json; charset=utf-8',
            data: investmentdata,
            success: function () {
                alert('hi');
            }
        });

    };

在这种情况下，您也不需要FromBody：

[HttpPost]
public void Post(InvestmentSummary val)
{
    string blah;
    if (val.InvestmentDetails[0] != null)
    blah = val.InvestmentDetails[0].Cost.ToString();    
}

无法获取ASP MVC4 APIController Post方法来读取JSON

1 个答案: